clipboard problem - Windows Mobile Development and Hacking General

I have been writing a small tool for someone that has no windows and finishes after it dose its thing. I try to place the results on the clipboard as text in both formats (CF_TEXT & CF_UNICODETEXT). I use localalloc to get the memory I need, and I do not free it, the next program to call EmptyClipboard() will do that.
When my program runs under normal operation it flushes whatever is on the clipboard (tested it works) but then the text is gone. I can't paste to pword. If I make the process wait for a while using sleep() before ending, then go to pword, I can paste. When the program finaly finishes I can no longer get the text from the clipboard.
What is happening to the text? If the memory was being freed I would still expect to get some random garbage when I paste, but I get nothing. No other program is flushing the clipboard in that time, I have already closed my use of it and tested. Other programs have plenty of oportunity to flush the clipboard while I happily paste in that sleep period (I tested changing to different programs in that period with no ill effect).
I have tried obtaining the memory using globalalloc localalloc new malloc.
All work identically.

lookie here....
BOOL sendToClipboard(CString data)
{
BOOL result=TRUE;
if (OpenClipboard(NULL))//pass NULL for no window
{
HGLOBAL hGmem1,hGmem2;
HANDLE res;
char* pGmem1;
ushort* pGmem2;
CString ushorText=data;
char *charText=(char*)malloc(data.GetLength()+1);
memset(charText,'\0',data.GetLength()+1);
//convert from input
for(int i=0;i<data.GetLength();i++)
{
char con='\0';
VarI1FromUI2(data.GetAt(i),&con);
*(charText+i)=con;
}
if(EmptyClipboard()==0)//get ownership
{
result=FALSE;
}
//when moveable returns a object, fixe a pointer
hGmem1=GlobalAlloc(GMEM_DDESHARE|GMEM_MOVEABLE,(ushorText.GetLength()+1));
hGmem2=GlobalAlloc(GMEM_DDESHARE|GMEM_MOVEABLE,(ushorText.GetLength()+1)*sizeof(ushort));
//get pointer to memory
pGmem1=(char*)GlobalLock(hGmem1);
pGmem2=(ushort*)GlobalLock(hGmem2);
if (pGmem1&&pGmem2)
{
// UNICODE to clipboard
memcpy(pGmem2,ushorText.GetBuffer(0),(ushorText.GetLength()+1)*2);
res=SetClipboardData(CF_UNICODETEXT,hGmem2);
if(res==NULL)
{
result=FALSE;
}
// ASCII to clipboard
strcpy((char*)pGmem1,charText);
res=SetClipboardData(CF_TEXT,hGmem1);
if(res==NULL)
{
result=FALSE;
}
}
//clean up but don't free, next clipboard user dose that
pGmem1=NULL;
pGmem2=NULL;
if(charText)
{
free(charText);
charText=NULL;
}
GlobalUnlock(hGmem1);
GlobalUnlock(hGmem2);
CloseClipboard();
}
else
{
result=FALSE;
}
//Sleep(10000);
return result;
}
That code will put the desired text on the clipboard and it will stay there on wm2003 devices and above. On 2002 it puts it there only as long as the process is going, regardless of what windows I create etc. To see for your self uncomment the sleep it works, comment it out it fails.
I know there is a solution because I use a little program called PocketNotepad that has persistant clipboard data after its process has stopped.

Related

CameraCaptureDialog in VS2005/CF2

Has anyone used the CameraCaptureDialog successfully on a PDA with camera to capture an image to a file?
I tried the following code on my O2 Atom (a camera-equipped PDA phone running Windows Mobile 5.0 & CF2) but all I get is a static image in the dialog. After clicking OK in the dialog, nothing happens. The image is not saved, which should not be the case. Doing a trace in debug mode shows that the FileName property is an empty string immediately after the ShowDialog() call.
CameraCaptureDialog c = new CameraCaptureDialog();
c.DefaultFileName = "test.jpg";
c.InitialDirectory = @"\My Documents";
c.ShowDialog();
(I've posted a similar to another thread. Hope it's ok to start a new thread.)
I have used successfullly with my Qtek 9100 (htc wizard).
But it annoys me that I have to click the releasebutton in the cameradialog to retrieve the picture. I would really like to capture a picture directly from .net CF
Andreas
andemann said:
But it annoys me that I have to click the releasebutton in the cameradialog to retrieve the picture. I would really like to capture a picture directly from .net CF
Click to expand...
Click to collapse
Hi Andreas, for my case, I don't see any button in the dialog, but the left softkey is Cancel and the right softkey is Menu (for adjusting properties like brightness and quality). And at the top-right is the OK. I assume that clicking OK captures the picture and saves it as a file (for my case, it doesn't).
Could you tell me more about the releasebutton? And doesn't the CameraCaptureDialog save a file to the ROM after snapping the picture?
Thanks for the reply!
On my device I have a dedicated camerabutton, when I press this button, the picture is captured and the cameradialog asks me if I want to save the picture and return to the application or delete it (take another)
Andreas
Well I guess I'll move on to see if it can be done with unmanaged code. I had wanted to use a camera api that works on all WM5 devices. Since there's the CameraCaptureDialog class for managed code, I assume it's definitely doable with low level code.
Does anyone know where's a good place to start searching for info?
methods
I try to do the same on an Universal
I find an interesting thread on http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=253920&SiteID=1 but I can't achieve realize it.
I try that method and I find that loading the CameraDialog open two windows who's classnames are "WCE_IA_Camera_Main" (and a subwindow "WCE_IA_Camera_Skin") and "IACW_AGENT". I try the method exlained on the thread for each window but this didn't make the trick.
I create a thread who is launched before calling the cameraDialog and in this thread, I send message press enter to the camera handle window (I hope) : SendMessage(hCamWnd, WM_KEYDOWN, VK_ENTER, NULL)
I didn't work. Any tips ?
PS: there is a method with directShow who is much more difficult
I have the same issue about the FileName. The string is empty just after the CameraCaptureDialog is openned.
but here is the method i used to take automatic captures:
I started a timer just after the dialog is openned and simulated the message sent by the capture button on my PDA... first u need the message number and the parameters it is used... here is how to get it..
1. open Remote spy from visual studio remote tools in all programs.
2. Connect to your Smartphone or PDA.
3. open the camera and from Remote spy.. click on Target>> Refresh.
4. check the windows list and you will find a camera window. choose it and from spy menu click messages.
5. now remote spy will show you all messages that is sent to the camera dialog, so it's time to press the capture button or equivalent from your smartphone or PDA. and after you press it close the camera dialog.
6. in the messages window check for the message sent when you pressed the capture button. take the message value, wparam, and LParam. *you might get two messages for the same button press. like key_Up and key_Down. mine worked with the key_Up. you might need to do some tries to find the right message neway*
now you have everything you need to simulate the capture key.
in ur code u will need to import both GetForeGroundWindow and SendMessage functions from CoreDll. and after openning the camera dialog enable a time to make sure the cameraDialog is openned and worked fine and then when the time ticks get the CameraDialog window handle using GetForeGroundWindow and the send the capture button message to it using SendMessage.
here is my full code.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.WindowsMobile.Forms;
using System.Runtime.InteropServices;
using Microsoft.WindowsMobile.PocketOutlook;
using Microsoft.WindowsMobile.Status;
namespace CamCapture
{
unsafe public partial class Form1 : Form
{
[DllImport("CoreDll")]
public static extern IntPtr FindWindow(
string lpClassName, // class name
string lpWindowName // window name
);
[DllImport("CoreDll")]
public static extern IntPtr SendMessage(
IntPtr hWnd, // handle to destination window
uint Msg, // message
uint wParam, // first message parameter
uint lParam // second message parameter
);
[DllImport("CoreDll")]
public static extern IntPtr GetForegroundWindow();
public Form1()
{
InitializeComponent();
}
private void menuItem2_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void menuItem1_Click(object sender, EventArgs e)
{
CameraCaptureDialog ccd = new CameraCaptureDialog();
ccd.Owner = this;
ccd.Mode = CameraCaptureMode.Still;
ccd.InitialDirectory = @"\My Documents\My Pictures";
ccd.DefaultFileName = @"test.jpeg";
ccd.Resolution = new Size(1600, 1280);
ccd.StillQuality = CameraCaptureStillQuality.High;
if (ccd.ShowDialog() == DialogResult.OK)
{
timer1.Enabled = true;
}
Show();
ccd.Dispose();
}
private void timer1_Tick(object sender, EventArgs e)
{
IntPtr hwnd = GetForegroundWindow();
SendMessage((IntPtr)hwnd, 0x201, 0x1, 0x10000D);
timer1.Enabled = false;
}
}
}
i took 10 pictures and i cant recognize who is the press button event
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
furthermore text format is last example is very different from: SendMessage((IntPtr)hwnd, 0x201, 0x1, 0x10000D);
thanks
you will need to watch the remote spy for a while without clicking the button so you recognise the normal messages that is always sent by the camera. And after that you can click the capture button and you will notice a different message on the messages window. The only way you know it is by watching the remote spy window for a while, then try and error.
I let him 1 minute without move it and close it and the messages are the same. next other minute and took 5 pictures consecutives without move camera and same result
Exist a solution in mortscript, bit i need take picture while send bluetooth messages and script language dont let do both things at the same time (sorry for my bad english)
if question "Please set the Camera app to photo mode before executing this script. Additionally, please remember to disable <<Reviev After Capture>> option in Camera before running this script! Run the script?","Important note"
setbacklight 1,1
Input limit, 1, "Total images to capture","MultiCapture"
if equals "",%limit%
set limit,10
endif
set total,0
Input delayer, 1, "Capture interval (seconds)","MultiCapture"
set delayer,%delayer%*1000
if equals %delayer%,0
set delayer,1000
endif
%czas%=%delayer%*%limit%/1000
%czas_m%=%czas%/60
%czas%="Total capture time: "&%czas%&" seconds, this is "&%czas_m%&" minutes."
message %czas%,"MultiCapture"
if question "Lock the touchscreen?","Touchscreen lock"
run tpdisable.exe
endif
run camera.exe
WaitForActive "Camera",10
setbacklight 0,0
while wndActive "Camera"
SendCR "Camera"
sleep %delayer%
%total%=%total%+1
if equals %total%,%limit%
Close "Camera"
endif
endwhile
run tpenable.exe
%total%="Images captured: " & %total%
message %total%,"Done"
endif
Click to expand...
Click to collapse
thanks for answer

Strange error while returning an Object value

I posted my problem at stackoverflow, please help me if you can.
my problem is very.. different. I got a code similar to:
Code:
public class PlayerCharacter
{
public void move(int direction)
{
if(direction != 0) //Skips this
{
...
}
else //Enter here
{
destinationMap = GamePlayScreen.canTransferMap(direction);
...
}
...
}
}
public Class GamePlayScreen
{
private PlayerCharacter p;
private static GamePlayScreen instance;
...
public void codeStartsHere()
{
//heppens in motionEvent only
p.move(0);
}
public static Map canTransferMap(int direction)
{
return instance.canTransferToMap(direction); //returns here the currect value
}
private Map canTransferToMap(int direction)
{
...
return getMap(nextMapName); //returns here the currect value
}
public Map getMap(String mapName)
{
for(Map t : maps)
{
if(t.getMapName().equals(mapName) == true)
{
return t; //returns here the currect value
}
}
return null; //never gets here
}
}
Everything works fine until "GamePlayScreen.canTransferMap(direction)" ends. Though it gets the correct value from "instance.canTransferToMap(direction)", when I watch PlayerCharacter->move->destinationMap I see that it returns a null!
I went step by step and watched the return values in every "return", before & after it: it returns null instead of the value! What is even stranger, it ALWAYS works at the first time and fails at the 2nd.
I updated the android SDK but didn't help, and so reinstalling the application & doing "project->clean".
Notes:
1. I'm using Galaxy S I9000, eclipse and it is a canvas drawn application.
2. I wrote as close a copy as I could (please note that this is my REAL code).
Thanks in advance
It's hard to tell for sure, but I think you've got a scope problem. You're assigning a value to destinationMap by calling a static function of the class GamePlayScreen, but the static function is calling non-static functions within the same class so unless maps is declared static, your for loop: for (Map t: maps) , is probably returning a local variable Map that is going out of scope as soon as your call return t.
It isn't a local array, it's "private ArrayList<Map> maps;" that is defined along side "private PlayerCharacter p;" and "private static GamePlayScreen instance;" in GamePlayScreen's instance;
I tired to replace the "for-each" loop with a regular "for" but it doesn't change anything.
Though a return of a non-existing object address may sound logical, it is not possible in Java because all of the objects are allocated in the heap and not in stack. (Though I had such problems in C++)
Well, I'd have to see all the code involved I guess. I know that all objects in Java are heap based, but that also means that they must be new'd somewhere too and I saw no new for the Map object, but I suppose you did that when you placed them in the ArrayList. The static qualifier on canTransferMap() throws me off though. Why is it there if you're returning a properly new'd object?
In my code I wish to access GamePlayScreen's data from within PlayerCharacter, even though I do not have the needed reference.
My solution for that is to have a static reference to GamePlayScreen in GamePlayScreen and thus it is available from everywhere. (And I know I will not have more then one GamePlayScreen at once in my game)
About the "new" keyword, as for now I have zero "new"-s while playing the game.
I pre-allocate ALL of my data and release the temporary in a loading screen, right before the actual game starts.

Sending and Receiving MMS in Android

How to Send and Receive MMS in Android:
This is a guide I am creating to help all of you out there making messaging apps like sliding messaging, hopefully it will help someone at least get started in the right direction! This guide will not be a guide on how to read MMS messages, which is actually very simple. Here is a tutorial on that which will get you started: How to read MMS data in Android (The first answer is a lifesaver, it will get you where you need to go). Now onto sending and receiving!
First off, I want to say that all of this may seem very daunting, especially to a first time, independent Android app developer like I was when this started out, trying to manange time between this and college studies! A messaging app can be extremely difficult to write since there is no supported API to it at all and you have to go through lines and lines trying to decipher stock source code. Stick to it and you can definitely get there eventually I do feel that Google should add this type of thing into their API and document it though, so as to make it easier for us 3rd party developers without a giant team behind us! Come on Google!
Here's the steps in the order that I went through:
1) You need to import a lot of internal android classes, which can all be found here: GrepCode
Here are all of the files you will need to grab (there may be more, but I was able to in the end modify all of these files so that they don't depend on others such as taking out unnecessary lines of code, etc)
Code:
android.annotation.SdkConstant.java
android.database.sqlite.SqliteWrapper.java
android.net.ConnectivityManager.java
android.net.DhcpInfoInternal.java
android.net.IConnectivityManager.java
android.net.INetworkPolicyListener.java
android.net.InetworkPolicyManager.java
android.net.LinkAddress.java
android.net.LinkCapabilities.java
android.net.LinkProperties.java
android.net.NetworkIdentity.java
android.net.NetworkPolicy.java
android.net.NetworkPolicyManager.java
android.net.NetowkrQuotaInfo.java
android.net.NetowrkState.java
android.net.NetworkTemplate.java
android.net.NetworkUtils.java
android.net.ProxyProperties.java
android.net.RouteInfo.java
android.provider.Downloads.java
android.provider.Telephony.java
com.android.internal.annotations.VisibleForTesting.java
com.android.internal.net.LegacyVpnInfo.java
com.android.internal.net.VpnConfig.java
com.android.internal.net.VpnProfile.java
com.android.internal.telephony.EncodeException.java
com.android.internal.telephony.GsmAlphabet.java
com.android.internal.telephony.IccUtils.java
com.android.internal.telephony.SmsConstants.java
com.android.internal.telephony.TelephonyProperties.java
com.android.internal.util.ArrayUtils.java
com.android.internal.util.Objects.java
com.android.internal.util.Preconditions.java
com.android.mms.MmsConfig.java
com.android.mms.transaction.AbstractRetryScheme.java
com.android.mms.transaction.DefaultRetryScheme.java
com.android.mms.transaction.HttpUtils.java
com.android.mms.transaction.MmsSystemEventReceiver.java
com.android.mms.transaction.NotificationTransaction.java
com.android.mms.transaction.Observable.java
com.android.mms.transaction.Observer.java
com.android.mms.transaction.ProgressCalbackEntity.java
com.android.mms.transaction.PushReceiver.java
com.android.mms.transaction.ReadRecTransaction.java
com.android.mms.transaction.RetrieveTransaction.java
com.android.mms.transaction.RetryScheduler.java
com.android.mms.transaction.SendTransaction.java
com.android.mms.transaction.Transaction.java
com.android.mms.transaction.TransactionBundle.java
com.android.mms.transaction.TransactionService.java
com.android.mms.transaction.TransactionSettings.java
com.android.mms.transaction.TransactionState.java
com.android.mms.util.DownloadManager.java
com.android.mms.util.RateController.java
com.android.mms.util.SendingprogressTokenManager.java
com.google.android.collect.Sets.java
com.google.android.mms.ContentType.java
com.google.android.mms.InvalidHeaderValueException.java
com.google.android.mms.MmsException.java
com.google.android.mms.pdu.AcknowledgeInd.java
com.google.android.mms.pdu.Base64.java
com.google.android.mms.pdu.CharacterSets.java
com.google.android.mms.pdu.DeliveryInd.java
com.google.android.mms.pdu.EncodedStringValue.java
com.google.android.mms.pdu.GenericPdu.java
com.google.android.mms.pdu.MultimediaMessagePdu.java
com.google.android.mms.pdu.NotifictionInd.java
com.google.android.mms.pdu.NotifyRespInd.java
com.google.android.mms.pdu.PduBody.java
com.google.android.mms.pdu.PduComposer.java
com.google.android.mms.pdu.PduContentTypes.java
com.google.android.mms.pdu.PduHeaders.java
com.google.android.mms.pdu.PduParser.java
com.google.android.mms.pdu.PduPart.java
com.google.android.mms.pdu.PduPersister.java
com.google.android.mms.pdu.QuotedPrintable.java
com.google.android.mms.pdu.ReadOrigInd.java
com.google.android.mms.pdu.RetrieveConfjava
com.google.android.mms.pdu.SendConf.java
com.google.android.mms.pdu.SendRequ.java
com.google.android.mms.util.AbstractCache.java
com.google.android.mms.util.DownloadDrmHelper.java
com.google.android.mms.util.DrmConvertSession.jav
com.google.android.mms.util.PduCache.java
com.google.android.mms.util.PduCacheEntry.java
com.google.android.mms.util.SqliteWrapper.java
Whew, that was a ton of typing, hopefully its worth it! Haha. May be some typos in there too, but I'm sure you will be able to find the right one.
I know that's a lot, but I found it to be the easiest way of doing things. I'm not actually sure that all of these are required, and I may have missed a couple or added a couple extras, but you get the picture at least and thats most of them. You'll probably only end up using about 10% of those files, but since they all have others imported, I chose to import them all instead of the possibility of messing something up that was necessary. Like I said, its a lot, but almost all of them are really small so they won't increase the size of your app by more then half a megabyte at max (not sure on an exact number) so that's not really something to worry about. If you can make it by this daunting task, you should be good to go for the rest of the tutorial.
2) You need an MMS Part class that will be used to store MMS data you are going to be sending. Here is what mine looks like:
Code:
public class MMSPart {
public String Name = "";
public String MimeType = "";
public byte[] Data;
}
Just copy and paste this class.
Very straightforward as to what this will do for you, it is the actual file that we will be sending through out http connection. MimeType is the type of object that the part is, for example image/png or text/plain are the 2 that I use.
3) Next up, we need a class that will assist us in finding the system APNs. Here is mine:
Code:
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.provider.Telephony;
import android.text.TextUtils;
import android.widget.Toast;
public class APNHelper {
public APNHelper(final Context context) {
this.context = context;
}
@SuppressWarnings("unchecked")
public List<APN> getMMSApns() {
final Cursor apnCursor = this.context.getContentResolver().query(Uri.withAppendedPath(Telephony.Carriers.CONTENT_URI, "current"), null, null, null, null);
if ( apnCursor == null ) {
return Collections.EMPTY_LIST;
} else {
final List<APN> results = new ArrayList<APN>();
if ( apnCursor.moveToFirst() ) {
do {
final String type = apnCursor.getString(apnCursor.getColumnIndex(Telephony.Carriers.TYPE));
if ( !TextUtils.isEmpty(type) && ( type.equalsIgnoreCase("*") || type.equalsIgnoreCase("mms") ) ) {
final String mmsc = apnCursor.getString(apnCursor.getColumnIndex(Telephony.Carriers.MMSC));
final String mmsProxy = apnCursor.getString(apnCursor.getColumnIndex(Telephony.Carriers.MMSPROXY));
final String port = apnCursor.getString(apnCursor.getColumnIndex(Telephony.Carriers.MMSPORT));
final APN apn = new APN();
apn.MMSCenterUrl = mmsc;
apn.MMSProxy = mmsProxy;
apn.MMSPort = port;
results.add(apn);
Toast.makeText(context, mmsc + " " + mmsProxy + " " + port, Toast.LENGTH_LONG).show();
}
} while ( apnCursor.moveToNext() );
}
apnCursor.close();
return results;
}
}
private Context context;
}
Also, you will need an APN class, here is what that one looks like:
Code:
public class APN {
public String MMSCenterUrl = "";
public String MMSPort = "";
public String MMSProxy = "";
public APN(String MMSCenterUrl, String MMSPort, String MMSProxy)
{
this.MMSCenterUrl = MMSCenterUrl;
this.MMSPort = MMSPort;
this.MMSProxy = MMSProxy;
}
public APN()
{
}
}
Just copy and paste these classes.
The problem with this is that in Android 4.0 and up, Google blocks 3rd party access to APNs (though from trial and error I believe that you can access them on some touchwiz roms/phones, but not all). To get around this, in Sliding Messaging I had to have users input this information manually, so if you have users who will be on an API higher than 14 (ICS), you will need to have this option or it WILL ABSOLUTELY NOT work. At all. A little further down I'll show you how to implement so that you can try and find APNs, and if it fails then you can set them manually.
4) You need to include these permissions in the app for things to work and not get FCs because of lack of permissions:
Code:
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECEIVE_MMS" />
<uses-permission android:name="android.permission.READ_SMS"/>
<uses-permission android:name="android.permission.WRITE_SMS"/>
<uses-permission android:name="android.permission.WRITE_APN_SETTINGS" />
Just put them in the AndroidManifest with the rest. If you can't figure this step out maybe its time to start with something a little easier
As for the last one, write apn settings, I know for a fact you will not be able to compile your app through eclipse if you include it and you are working with Android 4.0+. It can only be applied to system apps only for API 14 and up and I don't know if you can include it without error if you are only targeting Gingerbread or not. More then likely you will have to take it out if you are not compiling your app as a system app by building it with the rest of the android source.
Please Note: I'm not actually sure that the internet permission is necessary, but the stock google app has it so I decided to include it.
5) Ok, now we have all of our classes we will use and it is time to send an MMS message. I will just copy the 2 functions that I use to do this directly below, and then explain them after that. Here they are:
Code:
public void sendMMS(final String recipient, final MMSPart[] parts)
{
ConnectivityManager mConnMgr = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
final int result = mConnMgr.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, "enableMMS");
if (result != 0)
{
IntentFilter filter = new IntentFilter();
filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
BroadcastReceiver receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (!action.equals(ConnectivityManager.CONNECTIVITY_ACTION))
{
return;
}
@SuppressWarnings("deprecation")
NetworkInfo mNetworkInfo = (NetworkInfo) intent.getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_INFO);
if ((mNetworkInfo == null) || (mNetworkInfo.getType() != ConnectivityManager.TYPE_MOBILE_MMS))
{
return;
}
if (!mNetworkInfo.isConnected())
{
return;
} else
{
sendData(recipient, parts);
unregisterReceiver(this);
}
}
};
registerReceiver(receiver, filter);
} else
{
sendData(recipient, parts);
}
}
This function is fairly simple. All it does is tell the sytem that we are going to start using a mobile connection and it should connect using the term "enableMMS" so that we start the right type of connection. The variable result is set to the type of connection already active when we call this, and we are looking for it to be set to 0, meaning that our apns are already active. If this is the case, you can just skip right ahead to sending the MMS message. More than likely though, apns will not be active when you start the call, so you need to listen for a change in the connectivity through a broadcast receiver. That is what is going on inside the block of code where (result != 0). Once the receiver gets the correct type of connection, it calls the below function of sendData and unregisters itself so we don't leak receivers.
When the message is ready to be sent:
Code:
public void sendData(final String recipient, final MMSPart[] parts)
{
final Context context = this;
new Thread(new Runnable() {
@Override
public void run() {
final SendReq sendRequest = new SendReq();
final EncodedStringValue[] phoneNumber = EncodedStringValue.extract(recipient);
if (phoneNumber != null && phoneNumber.length > 0)
{
sendRequest.addTo(phoneNumber);
}
final PduBody pduBody = new PduBody();
if (parts != null)
{
for (MMSPart part : parts)
{
if (part != null)
{
try
{
final PduPart partPdu = new PduPart();
partPdu.setName(part.Name.getBytes());
partPdu.setContentType(part.MimeType.getBytes());
partPdu.setData(part.Data);
pduBody.addPart(partPdu);
} catch (Exception e)
{
}
}
}
}
sendRequest.setBody(pduBody);
final PduComposer composer = new PduComposer(context, sendRequest);
final byte[] bytesToSend = composer.make();
List<APN> apns = new ArrayList<APN>();
try
{
APNHelper helper = new APNHelper(context);
apns = helper.getMMSApns();
} catch (Exception e)
{
APN apn = new APN(sharedPrefs.getString("mmsc_url", ""), sharedPrefs.getString("mms_port", ""), sharedPrefs.getString("mms_proxy", ""));
apns.add(apn);
}
try {
HttpUtils.httpConnection(context, 4444L, apns.get(0).MMSCenterUrl, bytesToSend, HttpUtils.HTTP_POST_METHOD, !TextUtils.isEmpty(apns.get(0).MMSProxy), apns.get(0).MMSProxy, Integer.parseInt(apns.get(0).MMSPort));
ConnectivityManager mConnMgr = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
mConnMgr.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE_MMS, "enableMMS");
IntentFilter filter = new IntentFilter();
filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
BroadcastReceiver receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
Cursor query = context.getContentResolver().query(Uri.parse("content://mms"), new String[] {"_id"}, null, null, "date desc");
query.moveToFirst();
String id = query.getString(query.getColumnIndex("_id"));
query.close();
ContentValues values = new ContentValues();
values.put("msg_box", 2);
String where = "_id" + " = '" + id + "'";
context.getContentResolver().update(Uri.parse("content://mms"), values, where, null);
context.unregisterReceiver(this);
}
};
registerReceiver(receiver, filter);
} catch (Exception e) {
Cursor query = context.getContentResolver().query(Uri.parse("content://mms"), new String[] {"_id"}, null, null, "date desc");
query.moveToFirst();
String id = query.getString(query.getColumnIndex("_id"));
query.close();
ContentValues values = new ContentValues();
values.put("msg_box", 5);
String where = "_id" + " = '" + id + "'";
context.getContentResolver().update(Uri.parse("content://mms"), values, where, null);
((Activity) context).getWindow().getDecorView().findViewById(android.R.id.content).post(new Runnable() {
@Override
public void run() {
Toast.makeText(context, "MMS Error", Toast.LENGTH_SHORT).show();
}
});
}
}
}).start();
}
This function is where all the magic happens. First, we need to create a new thread to run on because you can't access an HTTP connection on the UI thread (I ran into this error the first time around since I had never worked with data connections before). Once that thread is running, we create a new SendReq object which is what we will be sending through the http request. You will need to encode your recipient (this part of the code can also be used to support group messaging, but I have not included that code, you will need to write it yourself if you so choose. You can attach multiple addresses by calling sendRequest.addTo() multiple times) and attach it to the sendRequest. Next up, attach your MMSPart file using a for loop. Here is how to initialize that MMSPart to whatever you want to include in it:
Code:
Bitmap b = ________; // Whatever your bitmap is that you want to send
ByteArrayOutputStream stream = new ByteArrayOutputStream();
b.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
MMSPart[] parts = new MMSPart[1];
parts[0] = new MMSPart();
parts[0].Name = "Image";
parts[0].MimeType = "image/png";
parts[0].Data = byteArray;
Using this, you can also add text to the request with the mimetype "text/plain" and encode text as a byte array so that it can be attached in the same mannor. I won't post that code, you should be able to figure it out.
Back to the original sendData function, we can now attach the pduBody which includes all of the byte arrays that we want to send, in this specific case, just an image and no text. After that, all that is left is to actually create the byte array to send, bytesToSend, which can be done very easily through internal classes.
Now we are ready to make the actual send request, which must be done through the users APNs using an http_post method. But first, we need to retrieve APNs. As I said earlier, if a user is running an Android version less then 4.0, then the app should be able to get the system defined APNs through the APN helper class that I provided (still no promises on this though as it has been untested, I don't have an old phone anymore to test on). Surround the request to APNHelper with a try/catch block so that we can catch the error of insigificant permissions, and then apply your user defined custom APNs that will actually work. I have users enter these in settings, thats why you see them being set through sharedPreference strings. you can manually type in whatever strings you want to for your network during testing phases though and that should work fine, just remember different networks use different APNs.
Ahh finally we are ready to make our Http request. This is fairly simple, as it is just one line of code which you should be able to directly take from my example if you initialize apns the same way I have:
Code:
HttpUtils.httpConnection(context, 4444L, apns.get(0).MMSCenterUrl, bytesToSend, HttpUtils.HTTP_POST_METHOD, !TextUtils.isEmpty(apns.get(0).MMSProxy), apns.get(0).MMSProxy, Integer.parseInt(apns.get(0).MMSPort));
You can look at javadocs for this function if you want to know what all of this is, but just know that it will make a post request through your MMSC you have defined and then send the message through the proxy and port (if those are needed, some carriers do not require them). Also, remember to add a catch block around this in case the sending fails for whatever reason, and tell your users that the request has failed. In this example, when the message fails to send, it moves the message to msg_box = 5, which is where MMS with errors are stored. This is simply updating the database with a new location for our recently failed message.
Last thing we have to do is listen for when the message has sent. This is where I've completely made up a function, and it functions correctly for ALMOST everyone (the only people not so far are Sprint users, and I haven't found a way around it yet). To do this, after our request, we register a new connectivity receiver just as we did when we were preparing to send a message, and this time around, when the state of the phones internet connection changes - usually dropping out of the APN request space I believe - we can move the message from the outbox to the sent message box and boom, message sent.
Yay, you should have just been able to send your first MMS message! (Unless I forgot a step in there lol) That's exciting stuff! Notice now though, that although you sent the message (and you have coded in how to change which message box the message is in), the message didn't get saved to the database so you can't actually see it in the app. That doesn't do most of us any good, so next step is how to save it to the SMS database on your phone.
6) Here we save the message, I'll just list out the functions again and then explain them after that:
Code:
public static Uri insert(Context context, String[] to, String subject, byte[] imageBytes)
{
try
{
Uri destUri = Uri.parse("content://mms");
// Get thread id
Set<String> recipients = new HashSet<String>();
recipients.addAll(Arrays.asList(to));
long thread_id = Telephony.Threads.getOrCreateThreadId(context, recipients);
// Create a dummy sms
ContentValues dummyValues = new ContentValues();
dummyValues.put("thread_id", thread_id);
dummyValues.put("body", "Dummy SMS body.");
Uri dummySms = context.getContentResolver().insert(Uri.parse("content://sms/sent"), dummyValues);
// Create a new message entry
long now = System.currentTimeMillis();
ContentValues mmsValues = new ContentValues();
mmsValues.put("thread_id", thread_id);
mmsValues.put("date", now/1000L);
mmsValues.put("msg_box", 4);
//mmsValues.put("m_id", System.currentTimeMillis());
mmsValues.put("read", 1);
mmsValues.put("sub", subject);
mmsValues.put("sub_cs", 106);
mmsValues.put("ct_t", "application/vnd.wap.multipart.related");
if (imageBytes != null)
{
mmsValues.put("exp", imageBytes.length);
} else
{
mmsValues.put("exp", 0);
}
mmsValues.put("m_cls", "personal");
mmsValues.put("m_type", 128); // 132 (RETRIEVE CONF) 130 (NOTIF IND) 128 (SEND REQ)
mmsValues.put("v", 19);
mmsValues.put("pri", 129);
mmsValues.put("tr_id", "T"+ Long.toHexString(now));
mmsValues.put("resp_st", 128);
// Insert message
Uri res = context.getContentResolver().insert(destUri, mmsValues);
String messageId = res.getLastPathSegment().trim();
// Create part
if (imageBytes != null)
{
createPartImage(context, messageId, imageBytes);
}
// Create addresses
for (String addr : to)
{
createAddr(context, messageId, addr);
}
//res = Uri.parse(destUri + "/" + messageId);
// Delete dummy sms
context.getContentResolver().delete(dummySms, null, null);
return res;
}
catch (Exception e)
{
e.printStackTrace();
}
return null;
}
Code:
private static Uri createPartImage(Context context, String id, byte[] imageBytes) throws Exception
{
ContentValues mmsPartValue = new ContentValues();
mmsPartValue.put("mid", id);
mmsPartValue.put("ct", "image/png");
mmsPartValue.put("cid", "<" + System.currentTimeMillis() + ">");
Uri partUri = Uri.parse("content://mms/" + id + "/part");
Uri res = context.getContentResolver().insert(partUri, mmsPartValue);
// Add data to part
OutputStream os = context.getContentResolver().openOutputStream(res);
ByteArrayInputStream is = new ByteArrayInputStream(imageBytes);
byte[] buffer = new byte[256];
for (int len=0; (len=is.read(buffer)) != -1;)
{
os.write(buffer, 0, len);
}
os.close();
is.close();
return res;
}
Code:
private static Uri createAddr(Context context, String id, String addr) throws Exception
{
ContentValues addrValues = new ContentValues();
addrValues.put("address", addr);
addrValues.put("charset", "106");
addrValues.put("type", 151); // TO
Uri addrUri = Uri.parse("content://mms/"+ id +"/addr");
Uri res = context.getContentResolver().insert(addrUri, addrValues);
return res;
}
I didn't write these functions, credit to Vodemki on Stack Overflow. All you have to do is call the insert function and it will do all of the work for you. Send that fuction the activity context, a string array of the numbers who you sent the message to, a subject for the message, and the same byte array of the image you passed earlier to your MMS part file. You can look at the code for inserting the image and reproduce this to do the same for a string of text you are sending with the image.
You will want to actually call these funtions right after you push the send button for example, to first save the message and then you can send it and update it later after it has sent or failed to send.
Ok, now that will successfully allow you to put the MMS message in the database. For some reason, these messages just show up as blank messages in the stock app, not sure why, but Sliding Messaging is able to read them at least, so depending on your implementation, yours should be able to do so as well.
Now all this function does is insert the image. I don't want to give away all of my secrets for Sliding Messaging so you will have to go through and find out how to insert text and group message addresses yourself, I think that's fair enough and if you've made it this far in your app, you shouldn't have to much of a problem with it
Wow, we just sent and saved that message to our phone, that means we are halfway home! (Nice rhyme huh )
Onto receiving in the next post.
7) First up, you'll have to know a little something about querying the mms-sms database, read up on that first if you haven't already (first link I have posted at the top). This is all out of my brain and what I was able to do from experience, and seems to work very well... you won't find a tutorial anywhere else on the internet of how to do this (at least I couldn't anywhere). I'm not going to just give you a simple function for this one though, you will have to adapt the code according to how you want it to be used. Once again, here is the code you will need to use:
Code:
id = ________; // this is the id of your MMS message that you are going to search for
Cursor locationQuery = context.getContentResolver().query(Uri.parse("content://mms/"), new String[] {"m_size", "exp", "ct_l", "_id"}, "_id=?", new String[]{id}, null);
locationQuery.moveToFirst();
String exp = "1";
String size = "1";
try
{
size = locationQuery.getString(locationQuery.getColumnIndex("m_size"));
exp = locationQuery.getString(locationQuery.getColumnIndex("exp"));
} catch (Exception f)
{
}
String location = locationQuery.getString(locationQuery.getColumnIndex("ct_l"));
The above function is where you query the message you are interested in downloading, and get data from it such as expiration date, size, and location on a server. The date will be a date in milliseconds that you can format accordingly and display to the screen if you so choose, and the size will be in bytes, but you will probably want to convert to kb by dividing by 1000. As for the location, that is what we are going to use to download the message:
Code:
List<APN> apns = new ArrayList<APN>();
try
{
APNHelper helper = new APNHelper(context);
apns = helper.getMMSApns();
} catch (Exception e)
{
APN apn = new APN(sharedPrefs.getString("mmsc_url", ""), sharedPrefs.getString("mms_port", ""), sharedPrefs.getString("mms_proxy", ""));
apns.add(apn);
}
Get your APNs the same way as we did before when sending, I won't explain this again.
Code:
try {
byte[] resp = HttpUtils.httpConnection(
context, SendingProgressTokenManager.NO_TOKEN,
downloadLocation, null, HttpUtils.HTTP_GET_METHOD,
!TextUtils.isEmpty(apns.get(0).MMSProxy),
apns.get(0).MMSProxy,
Integer.parseInt(apns.get(0).MMSPort));
RetrieveConf retrieveConf = (RetrieveConf) new PduParser(resp).parse();
PduPersister persister = PduPersister.getPduPersister(context);
Uri msgUri = persister.persist(retrieveConf, Inbox.CONTENT_URI, true,
true, null);
ContentValues values = new ContentValues(1);
values.put(Mms.DATE, System.currentTimeMillis() / 1000L);
SqliteWrapper.update(context, context.getContentResolver(),
msgUri, values, null, null);
SqliteWrapper.delete(context, context.getContentResolver(),
Uri.parse("content://mms/"), "thread_id=? and _id=?", new String[] {threadIds, msgId});
((Activity) context).getWindow().getDecorView().findViewById(android.R.id.content).post(new Runnable() {
@Override
public void run() {
Toast.makeText(context, "Message Received", Toast.LENGTH_SHORT).show();
}
});
} catch (Exception e) {
e.printStackTrace();
((Activity) context).getWindow().getDecorView().findViewById(android.R.id.content).post(new Runnable() {
@Override
public void run() {
Toast.makeText(context, "Download Failed", Toast.LENGTH_SHORT).show();
}
});
}
This request is much the same as the previous we used when sending the message, except this time we use a get request instead of post, send the funtion a null where before it was out bytesToSend array, and receive a byte array from it. Once you have received this byte array, you can easily use internal classes to save the message to the database (these messages are saved 100% correctly and will show up in the stock app once downloaded, unlike before) and then delete the old message stored there that only had location data for the message to be downloaded. I won't go into much more detail then that, it should be easy enough to understand just from the code.
I have this function tied to a button press, but in theory you should also be able to register a WAP_PUSH_RECEIVED broadcast receiver that saves the message automatically when your phone gets one (WAP is the type of broadcast you get when receiving MMS data). I'm not going to post anything here about that because I haven't done it, but if you want, all of the code is the same and you can easily base it happening off of a setting in your app and the network connectivity state when the message is received.
Another Note: There is probably a way to use the above code with persisters etc to be able to save an MMS to the database in a much easier way, but I haven't looked into that at all, mostly because the code I posted in step 6 works just fine and I don't see a need for much else if you can handle just copying and pasting those functions.
Now I think that may be it... we covered sending MMS, saving sent MMS and finally receiving MMS! Fun stuff!
In conclusion, I just want to give something back to the community that has given my app, Sliding Messaging, so much love over the past couple of months. I hope this helps someone out there, because as far as I know and could find, this is the only full MMS tutorial there is for Android (and the only one at all for actually downloading MMS from the internet) and should get everything done that you need! Ask any questions you want and feel free to PM me if you need more assistance.
Now no one out there should have any excuse for not including at least some MMS support in your messaging apps! Hopefully this will save you from days upon days of research to no avail on the subject and unjust criticism from people who know absolutely nothing about the topic like I did (Had one person tell me to f-off and if I couldn't get it working, then his $0.99 entitled him to say that I needed to hire someone else who was actually competent at programming and spend all of my college savings so that person would do it for me ... to that person I say, HAHA, I did it. lol) Your users will be happy people if you get this implemented!
Also guys, I wouldn't mind getting a little credit if anyone out there uses this tutorial to get things up and running, but its not necessary if you don't want! Instead you could just buy me a beer and donate to me To the people who actually read through these last 3 paragraphs, I say thank you! Hopefully this tutorial can at least get you started, wish I had it reference when I was adding the support in!
Sources:
1) How to Read MMS Data in Android
2) Android Add MMS to Database
3) MMS in Android: Part 1
4) GrepCode
5) My own experience
Cheers, and good luck to anyone trying this out this is my first tutorial so if you find anything missing or any typos, let me know!
grepcode files missing
I tried to download classes from your given link 'Grepcode'.
It is missing the contents of com.google folder even it do not contain folder named google in com folder. (i tried different versions like 4.2.1,4.2.2 etc .. still same problem )
can you give me any other link to download classes ?
Cool, thanks.
(You might want to add [Guide] to your thread title. For now it looks like a question. )
Thanks very much for doing this. Had to do a bit of searching on the internet for some of the files, and some of the functions needed slight modification but this was enough of a push in the right direction that I've got mms sending working. Great job and good luck with the continued success of your app!
Also- your responses on the android marketplace to people leaving stupid feedback make me laugh!
Getting Connection Refused error
Hi,
I tried your code. I am getting the APN settings perfectly. But a soon as the httpClient tries to connect to my MMSC it throws ConnectionRefused Error.
Please help me. Its been head-scratcher 3 days in a row now.
Thanks. in advance.
Please help
I am not able to import the classes with name
com.android.mms.*
and
com.google.*
I downloaded the android-4.2.2_r1.jar and also android-4.4_r1.jar
But these jars do not contain all required classes.
Please help how to add these classes.
Regarding the missing classes
Hi,
I am looking for a solution to programmatically sending MMS through my Android Application.
Some classess are missing(com.google.*) in the jar downloaded from grepcode.
Can anybody help in this regard?
Thanks.
Missing Function
hi
When I want to insert MMS message in DB, eclipse says "Telephony.Threads.getOrCreateThreadId" is undefined!
What should I do?
Thanks
CursorIndexOutOfBoundsException
hi ,
I get exception like this
android.database.CursorIndexOutOfBoundsException: Index 0 requested, with a size of 0
AS per yourCode
Cursor query = context.getContentResolver().query(Uri.parse("content://mms"), new String[]
{
"_id"
}, null, null, "date desc");
query.moveToFirst();
String id = query.getString(query.getColumnIndex("_id"));
get force close when i try to get id
Does this still work? I noticed a lot of the comments say there are missing stuff. I need a good tutorial for implementing MMS sending/ receiving.

[Q]Content Provider - Huge Data

Hi,
Im using a content provider to query data, the following code was working good until I test it in another device(low end) with a larger data(~3000). With a larger data app became unusable, what can I do for improve this?
Code:
public void ContentSearch(String uriS,String id)
{
Uri uri = Uri.parse(uriS);
Cursor cur = getContentResolver().query(uri, NULL,
"_id = " + id, null, null);
cur.moveToFirst();
do {
//Do Things
} while (cur.moveToNext());
cur.close();
}
try to put it in a thread:
Code:
new Thread(new Runnable() {
[user=439709]@override[/user]
public void run() {
//CODE GOES HERE
}
}).start();
You do this for anything that might take the system a long time to execute and isn't directly needed for the UI.
If it is needed by the UI try an AsyncTask:
Code:
AsyncTask<Params,Progress,Result>() {
[user=439709]@override[/user]
protected Result doInBackground(Params params) {
}
protected void onProgressUpdate(Progress progress) {
}
protected void onPostExecute(Result result) {
}
}.execute();
I never used Content Providers so I'm not sure what you would put in for each thing on the Async but here is the Android Docs perhaps you can figure it out
Im filling an array to inflate in listview, my approach is load 25 items then break, and when the list reaches the end load more 25 and so on, but it seems that the cursor is in the same overloaded.
I need it for the UI so I dont have sure if the thread solve the problem, but I will try it anyway.
avlisF said:
Im filling an array to inflate in listview, my approach is load 25 items then break, and when the list reaches the end load more 25 and so on, but it seems that the cursor is in the same overloaded.
I need it for the UI so I dont have sure if the thread solve the problem, but I will try it anyway.
Click to expand...
Click to collapse
You fill the array then you fill the list? This might be what's causing our crash as the list is trying to setup before the array is done.
You could just use the async to do the lookup and set the list item info in the list adapter and as the async finishes each lookup it will enter each item in the list
Sent from my Nexus 7 using XDA Premium HD app

[Q] How to prevent constant executing of asynctask

Basicly I have very same code as described here http://www.learn2crack.com/2013/12/android-swipe-view-tab-layout-example.html:
In each of the fragments I have different asynctask, that just fetches data from website. Fragment class looks like this :
Code:
TextView text;
String content;
View today;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
today = inflater.inflate(R.layout.today, container, false);
text = (TextView) today.findViewById(R.id.textView);
// ((TextView) today.findViewById(R.id.textView)).setText("Today");
new RetriveSiteData().execute("http://menza.lupajz.eu/?den=dnes");
content = (String) text.getText();
return today;
<here is the asynctask, too long >
}
I am wondering if the data is always fetched, while swiping through fragments if the TabPagerAdapter class (on the website) has this method implemented the same way
Code:
@Override
public Fragment getItem(int i) {
switch (i) {
case 0:
//Fragement for Android Tab
return new Android();
case 1:
//Fragment for Ios Tab
return new Ios();
case 2:
//Fragment for Windows Tab
return new Windows();
}
return null;
}
In case if the data is always fetched and the asynctask is always executed how can I prevent that ? Maybe adding some onResume() methods to each fragment ?
What is the best solution just to make connection to website, fetch data once and then just keep displaying them while I am swiping between fragments ?
lupajz said:
Basicly I have very same code as described here http://www.learn2crack.com/2013/12/android-swipe-view-tab-layout-example.html:
In each of the fragments I have different asynctask, that just fetches data from website. Fragment class looks like this :
Code:
TextView text;
String content;
View today;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
today = inflater.inflate(R.layout.today, container, false);
text = (TextView) today.findViewById(R.id.textView);
// ((TextView) today.findViewById(R.id.textView)).setText("Today");
new RetriveSiteData().execute("http://menza.lupajz.eu/?den=dnes");
content = (String) text.getText();
return today;
}
I am wondering if the data is always fetched, while swiping through fragments if the TabPagerAdapter class (on the website) has this method implemented the same way
Code:
@Override
public Fragment getItem(int i) {
switch (i) {
case 0:
//Fragement for Android Tab
return new Android();
case 1:
//Fragment for Ios Tab
return new Ios();
case 2:
//Fragment for Windows Tab
return new Windows();
}
return null;
}
In case if the data is always fetched and the asynctask is always executed how can I prevent that ? Maybe adding some onResume() methods to each fragment ?
What is the best solution just to make connection to website, fetch data once and then just keep displaying them while I am swiping between fragments ?
Click to expand...
Click to collapse
Yes, that data is always fetched since onCreateView is always called when a Fragment which hasn't been in layout appears, whether it was already instantiated or not. Have a look at the diagram on the right here for better understanding on how the specific methods are called. The dumb solution would be to put that code into the constructor, but Google suggests not doing anything there and instead using onCreate, which is also only called once.
Instead it might be better to just fire up the tasks for each Fragment (maybe sequentially as well) in the Activity, but that depends on how much data you are loading here, since the user might be switched to the page you are loading at the very end.
Thanks for answear yea I was looking at the fragment google site and I guessed that was the problem, but I am not getting the second part.
Instead it might be better to just fire up the tasks for each Fragment (maybe sequentially as well) in the Activity, but that depends on how much data you are loading here, since the user might be switched to the page you are loading at the very end.
Click to expand...
Click to collapse
I am just getting about 30+ lines of pure text, so it is not that big.
lupajz said:
Thanks for answear yea I was looking at the fragment google site and I guessed that was the problem, but I am not getting the second part.
I am just getting about 30+ lines of pure text, so it is not that big.
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What I meant was that if you need to load much data over a possibly slow connection and do it in a specific order (meaning start with one category, then when that's finished the next one and so on) it might be that the user is swiping to the last category that will load and has to wait untill all other have been loaded. This is what speaks against loading everything in the activity and then reloading the Fragments with their specific content, but of course this is not the case with just a few lines of text . That would be the the way I would do it (load everything in the onCreate() of the activity and pass it to the Fragments) if there is little to medium data to load since you don't have to open an internet connection everytime the user swipes thus swiping will be much smoother (or it won't show a ProgressBar like that stupid xda-app ).
If it is data that you don't need to reload more than once every day, you can think about cashing it as well!

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