Database Users

Direct X and PNG Transparency on WM6.1 with .Net CF3.5

Hi all,
I'm trying to have transparent PNGs on my screen.
What is the best way to doing this ? I'm in C#, I tried DirectX, but it doesn't work.
What am I doing wrong ?
My code :
Code:
using System;
using System.Drawing;
using System.Windows.Forms;
using Microsoft.WindowsMobile.DirectX;
using Microsoft.WindowsMobile.DirectX.Direct3D;
using System.Runtime.InteropServices;
namespace Microsoft.Samples.MD3DM
{
// The main class for this sample
public class SimpleSMS : Form
{
// Our global variables for this project
Device device = null;
Texture texture = null;
Sprite sprite = null;
Rectangle rect;
public SimpleSMS()
{
// Set the caption
this.Text = "SimpleSMS";
this.MinimizeBox = false;
}
// Prepare the rendering device
public bool InitializeGraphics()
{
try
{
// Now let's setup our D3D parameters
PresentParameters presentParams = new PresentParameters();
presentParams.Windowed = true;
presentParams.SwapEffect = SwapEffect.Discard;
device = new Device(0, DeviceType.Default, this, CreateFlags.None, presentParams);
this.OnCreateDevice(device, null);
}
catch (DirectXException)
{
return false;
}
return true;
}
void OnCreateDevice(object sender, EventArgs e)
{
texture = TextureLoader.FromFile(device, @"badge.png");
sprite = new Sprite(device);
rect = new Rectangle(0, 0, 48, 48);
}
// All rendering for each frame occurs here
private void Render()
{
if (device != null)
{
device.Clear(ClearFlags.Target, System.Drawing.Color.Black, 1.0f, 0);
//Begin the scene
device.BeginScene();
device.RenderState.SourceBlend = Blend.SourceAlpha;
device.RenderState.DestinationBlend = Blend.InvSourceAlpha;
device.RenderState.AlphaBlendEnable = true;
sprite.Begin(SpriteFlags.AlphaBlend);
sprite.Draw(texture, rect, new Vector3(0.0f, 0.0f, 0.0f), new Vector3(100.0f, 100.0f, 0.0f), Color.White.ToArgb());
sprite.End();
//End the scene
device.EndScene();
device.Present();
}
}
// Called to repaint the window
protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
{
// Render on painting
this.Render();
// Render again
this.Invalidate();
}
// Called to repaint the window background
protected override void OnPaintBackground(
System.Windows.Forms.PaintEventArgs e)
{
// Do nothing to ensure that the rendering area is not overdrawn
}
// Close the window when Esc is pressed
protected override void OnKeyPress(
System.Windows.Forms.KeyPressEventArgs e)
{
// Esc was pressed
if ((int)(byte)e.KeyChar == (int)System.Windows.Forms.Keys.Escape)
this.Close();
}
/// <summary>
/// The main entry point for the application.
/// </summary>
static void Main()
{
SimpleSMS frm = new SimpleSMS();
// Initialize Direct3D
if (!frm.InitializeGraphics())
{
MessageBox.Show("Could not initialize Direct3D. " +
"This tutorial will exit.");
return;
}
Application.Run(frm);
}
}
}
Thanks for answers,
Scuse my bad english :-/

Not sure this helps, but RLTODAY works very well with transparent pngs in any WM version, and recently he released the source code:
http://rotlaus-software.de/forum/index.php?topic=1847.0

You can use ImagingFactory in OpenNETCF or other wrapper over the internet. PNGs with alpha work work for me.

AlphaControls
There is a project on Codeplex that can help you with transparency called AlphaControls. Also have a look on codeproject at the iPhone app clone

moneytoo said:
You can use ImagingFactory in OpenNETCF or other wrapper over the internet. PNGs with alpha work work for me.
Click to expand...
Click to collapse
Thank you all for answers ...
I tried OpenNetCF, without any result.
Do you have a piece of code in example ?

Try this:
http://www.codeplex.com/alphamobilecontrols
Or this:
http://johan.andersson.net/blog/2007/10/solution-for-transparent-images-on.html

Cursor help!

I'm new to using cursors to obtain data from the device. I'm working on a music player (see market link in signature) and I need to be able to list (and eventually play) the music found on the sdcard. I have some code, but I can't seem to get it to work
Here's the code I found on a website, but it leads to a force-close:
public class TestingData extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView view = (TextView) findViewById(R.id.hello);
String[] projection = new String[] {
MediaStore.MediaColumns.DISPLAY_NAME
, MediaStore.MediaColumns.DATE_ADDED
, MediaStore.MediaColumns.MIME_TYPE
};
Cursor mCur = managedQuery(Media.EXTERNAL_CONTENT_URI,
projection, null, null, null
);
mCur.moveToFirst();
while (mCur.isAfterLast() == false) {
for (int i=0; i<mCur.getColumnCount(); i++) {
view.append("n" + mCur.getString(i));
}
mCur.moveToNext();
}
}
}
Here's my attempt at fixing it, which still leads to a force-close:
public class test3 extends Activity {
TextView view = (TextView) findViewById(R.id.text1);
ListView list;
private ArrayAdapter<String> adapter;
String[] projection = new String[] {
MediaStore.MediaColumns.DISPLAY_NAME
, MediaStore.MediaColumns.DATE_ADDED
, MediaStore.MediaColumns.MIME_TYPE
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
list = (ListView)findViewById(R.id.list);
ArrayList<String> _list = new ArrayList<String>(Arrays.asList(projection));
adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,_list);
list.setAdapter(adapter);
Cursor mCur = managedQuery(Media.EXTERNAL_CONTENT_URI,
projection, null, null,
MediaStore.MediaColumns.DISPLAY_NAME + "ASC"
);
mCur.moveToFirst();
while (mCur.isAfterLast() == false) {
for (int i=0; i<mCur.getColumnCount(); i++) {
view.append("n" + mCur.getString(i));
}
mCur.moveToNext();
}
}
}
What am I doing wrong? Both codes lead to a force-close and I can't think of anything else to do. Thanks in advance.

did you set the correct permissions in the android manifest?

*slaps hand to forehead* I always forget about the manifest. Lol. Ummmm....what all am I supposed to put in there for these codes? Do both codes look like they would accomplish the same thing?

Well, I've written hundreds of Cursors in Android and I don't run my loop like you do, so, as a suggestion:
Code:
Cursror c = yada, yada;
if(c.moveToFirst()) {
do {
// TO DO HERE...
} while(c.moveToNext());
}
c.close();
Never had a problem.

Awesome! Thanks. Ill try it when I get a chance

Android getting SMS body from inbox

Hi,
I want to get body of SMS when I click on one. I have tried an approach simmilar to contact picker. Here is my code :
public class Decrypt extends Fragment {
Button loadButton;
EditText smsDisplay;
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
View v = inflater.inflate(R.layout.decrypt, null);
// Button loadButton=(Button)v.findViewById(R.id.)
loadButton=(Button)v.findViewById(R.id.buttonLoad);
smsDisplay=(EditText)v.findViewById(R.id.editTextLoad);
loadButton.setOnClickListener(new OnClickListener() {
@override
public void onClick(View v) {
Intent sendIntent = new Intent(Intent.ACTION_VIEW);
sendIntent.setData(Uri.parse("sms:"));
//sendIntent.setType(Sm)
//sendIntent.putExtra("sms_body","");
startActivityForResult(sendIntent,2);
}
});
return v;
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
try{
// if (resultCode == Activity.RESULT_OK) {
Uri ur = data.getData();
Cursor c = getActivity().getContentResolver().query(ur, null, null, null, null);
if (c.moveToFirst()) {
String s = c.getString(c.getColumnIndex("body"));
System.out.println(s);
Toast.makeText(getActivity(), s, Toast.LENGTH_LONG).show();
smsDisplay.setText(s);
}
}catch(Exception e){
e.printStackTrace();
}
// }
}
}
It opens a Inbox like when I open original sms app in anroid, but when I click on one message it doesnt copy body of that sms in my edittext. Please couul you look at my code and find mistake?
Thanks a lot for your time

[Guide] Listeners in Java development

You are new to java development and want to get buttons working?
Maybe you are a Pro but want a reminder?
whatever you are this Guide is to help you to make buttons/check boxes...etc working and functional
Some people are distracted between guides over internet and want the easiest way to get their project working, me too
Steps :
1-Define the button :
Code:
Button btn1;
Checkbox chkbox1;
RadioButton radio1;
2- Intialize it :
Code:
btn1 = (Button) findViewById(R.id.btn1);
chkbox1= (Checkbox ) findViewById(R.id.chkbox1);
radio1= (RadioButton) findViewById(R.id.radio1);
3-Add the listener :
Button:
Code:
btn1.setOnClickListener(new OnClickListener() {
@SuppressWarnings("deprecation")
@Override
public void onClick(View arg0) {
//Write awesome code here
}
});
CheckBox :
Code:
chkbox1.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
if (start.isChecked()) {
//if the checkbox checked
} else {
//if not checked
}
}
});
}
radio button:
Code:
public void onRadioButtonClicked(View view) {
boolean checked = ((RadioButton) view).isChecked();
switch(view.getId()) {
case R.id.radio1:
if (checked){
}
else{
}
break;
}
}
or use it in a radio Group :
Code:
public void onRadioButtonClicked(View view) {
// Is the button now checked?
boolean checked = ((RadioButton) view).isChecked();
// Check which radio button was clicked
switch(view.getId()) {
case R.id.radio1:
if (checked)
//Write code
break;
case R.id.radio2:
if (checked)
//Write code
break;
}
}
Also insted of this you can use a onCheckedChanged for a radio button (Thanks for GalaxyInABox)
Code:
@Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
switch (radioGroup.getCheckedRadioButtonId()) {
//Code
}
}
____________________________________________________________________
____________________________________________________________________
Also you can implement a Onclicklistener for the whole class to save resources : (thanks for @Jonny )
after defining and initializing your objects add this :
Code:
OnClickListener click_listener = new OnClickListener() {
public void onClick(View view) {
int id = view.getId();
if (id == your_id) {
//do stuff for this object
} else if (id == your_id2) {
//do other stuff for diffrent object
} else if (id == your_id3) {
//and so on
}
}
};
To do list :
-add on touch listeners
-add on drag listeners
Note : you can add a click listener to almost any thing (Textview or imageView or even EditText) just using the same method of adding listener to button
also there is some other ways to add a listener but this is the fastest and less disturbing :good:
If this guide is useful, press thanks

@ OP
CheckBox and RadioButtons don't they provide a CheckedChangeListener ?
Sent from my GT-S5302 using Tapatalk 2

sak-venom1997 said:
@ OP
CheckBox and RadioButtons don't they provide a CheckedChangeListener ?
Click to expand...
Click to collapse
Yes, and now you can use
Code:
@Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
switch (radioGroup.getCheckedRadioButtonId()) {
//Code
}
}
to get the checked button. They are pretty much the same, but you can use view.getTag() easier in the first one.
And @mohamedrashad please show how to put the listener into a inner class. Many people don't know/use it, but it's that useful!

GalaxyInABox said:
Yes, and now you can use
Code:
@Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
switch (radioGroup.getCheckedRadioButtonId()) {
//Code
}
}
to get the checked button. They are pretty much the same, but you can use view.getTag() easier in the first one.
Click to expand...
Click to collapse
I meant that the op shuld edit this guide and use those instead of OnCickListeners
GalaxyInABox said:
And @mohamedrashad please show how to put the listener into a inner class. Many people don't know/use it, but it's that useful!
Click to expand...
Click to collapse
ya new with java8 it will be a nice usage scenario of lambadas
Sent from my GT-S5302 using Tapatalk 2

GalaxyInABox said:
Yes, and now you can use
Code:
@Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
switch (radioGroup.getCheckedRadioButtonId()) {
//Code
}
}
to get the checked button. They are pretty much the same, but you can use view.getTag() easier in the first one.
And @mohamedrashad please show how to put the listener into a inner class. Many people don't know/use it, but it's that useful!
Click to expand...
Click to collapse
sak-venom1997 said:
@ OP
CheckBox and RadioButtons don't they provide a CheckedChangeListener ?
Sent from my GT-S5302 using Tapatalk 2
Click to expand...
Click to collapse
ok, i will add this

You can also add onClick property in XML and then handle it in a code.

Awesome tutorial! Thank you very much!
Please, you could share more related knowledge. It's really useful!

Also, an activity can be a listener. In this case:
MyActivity implements onClickListener {
btn1.setOnClickListener(this);
public void onClick (View v) {
//your code
}
}

For this kind of stuff, using some well known libraries from well known Android dev is a must.
https://github.com/JakeWharton/butterknife
Very powerfull, super easy to use, error prone and without any performance impact.

rafalniski said:
You can also add onClick property in XML and then handle it in a code.
Click to expand...
Click to collapse
SKAm69 said:
Also, an activity can be a listener. In this case:
MyActivity implements onClickListener {
btn1.setOnClickListener(this);
public void onClick (View v) {
//your code
}
}
Click to expand...
Click to collapse
will add them both, although I don't like this way

Mohamedrashad. Thanks a lot.
Sent from my P880 using Tapatalk

If you have multiple clickable objects then it's best to use just 1 onClickListener for all of them and use a switch on their ID's. This reduces resource usage as you only have 1 listener, not 5, 10 or however many you would have otherwise. It's not essential for this but it is a best practice if you want to streamline your code.
Mobile right now so I can't chuck up an example until tomorrow evening or so.

You dude had a great thread. Its helping me. Bravoo !!
Sent from my GT-I8190 using XDA Premium 4 mobile app

As @Jonny already pointed out: Use your class as a listener instead of creating a new (anonymous) inner class! Say you have a ListView, instead of doing this:
Code:
class MyFragment extends Fragment {
private void someMethod() {
((ListView) getView().findViewById(R.id.someListView)).setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//Code...
}
});
}
}
you can do this:
Code:
class MyFragment extends ListFragment implements AdapterView.OnItemClickListener, View.OnClickListener {
private void someMethod() {
((ListView) getView().findViewById(R.id.someListView)).setOnItemClickListener(this);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//Code...
}
}
This may look stupid, but when you have many listeners, you can un-clutter it. In my opinion this is the best way. You can also add "this" class as listener for as many ui elements as you want(because all of them extend view, you can use one OnClickListener), then you only need to have a switch statement to distinguish between the views. And voila, you prevented cluttering the code with boilerplate stuff.

Example using code in an app I'm making - app for my school.
Code:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Some code here for view/layouts etc
websitebutton = (Button) view.findViewById(R.id.website_btn);
facebookbutton = (Button) view.findViewById(R.id.facebook_btn);
twitterbutton = (Button) view.findViewById(R.id.twitter_btn);
websitebutton.setOnClickListener(handler);
facebookbutton.setOnClickListener(handler);
twitterbutton.setOnClickListener(handler);
return view;
}
OnClickListener handler = new OnClickListener() {
public void onClick(View view) {
switch (view.getId()) {
case R.id.website_btn :
Uri website = Uri.parse("http://wirralgrammarboys.com/");
Intent websiteintent = new Intent(Intent.ACTION_VIEW, website);
startActivity(websiteintent);
break;
case R.id.facebook_btn :
Uri facebook = Uri.parse("https://www.facebook.com/WirralGSB");
Intent facebookintent = new Intent(Intent.ACTION_VIEW, facebook);
startActivity(facebookintent);
break;
case R.id.twitter_btn :
Uri twitter = Uri.parse("https://twitter.com/WGSB");
Intent twitterintent = new Intent(Intent.ACTION_VIEW, twitter);
startActivity(twitterintent);
break;
}
}
};

Jonny said:
Example using code in an app I'm making.
Code:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Some code here for view/layouts etc
websitebutton = (Button) view.findViewById(R.id.website_btn);
facebookbutton = (Button) view.findViewById(R.id.facebook_btn);
twitterbutton = (Button) view.findViewById(R.id.twitter_btn);
websitebutton.setOnClickListener(handler);
facebookbutton.setOnClickListener(handler);
twitterbutton.setOnClickListener(handler);
return view;
}
OnClickListener handler = new OnClickListener() {
public void onClick(View view) {
int id = view.getId();
if (id == R.id.website_btn) {
Uri website = Uri.parse("http://wirralgrammarboys.com/");
Intent websiteintent = new Intent(Intent.ACTION_VIEW, website);
startActivity(websiteintent);
} else if (id == R.id.facebook_btn) {
Uri facebook = Uri.parse("https://www.facebook.com/WirralGSB");
Intent facebookintent = new Intent(Intent.ACTION_VIEW, facebook);
startActivity(facebookintent);
} else if (id == R.id.twitter_btn) {
Uri twitter = Uri.parse("https://twitter.com/WGSB");
Intent twitterintent = new Intent(Intent.ACTION_VIEW, twitter);
startActivity(twitterintent);
}
}
};
Click to expand...
Click to collapse
i'm adding this to OP if you don't mind jonny

mohamedrashad said:
i'm adding this to OP if you don't mind jonny
Click to expand...
Click to collapse
That's fine - if I didn't want people to use/adapt/learn from the code then I wouldn't put it up, use it as you want :good:
Sent from my HTC One using Tapatalk

Keep it up
Great tutorials, keep em coming!

Hey what about starting a new activity with onClickListiner
Sent from my M3S_D7 using XDA Free mobile app
---------- Post added at 03:57 PM ---------- Previous post was at 03:49 PM ----------
Hey and do u mind sending a source codes.zip file
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Rebound.co said:
Hey what about starting a new activity with onClickListiner
Sent from my M3S_D7 using XDA Free mobile app
---------- Post added at 03:57 PM ---------- Previous post was at 03:49 PM ----------
Hey and do u mind sending a source codes.zip file
Sent from my M3S_D7 using XDA Free mobile app
Click to expand...
Click to collapse
in the onClick method just have this code:
Code:
startActivity(new Intent(this, YourActivity.class));

How do I implement a onscroll Listener to my listview?

I have a large data to load from JSON.
I have implemented a custom list view by following a tutorial, now since the data is huge I want it load as the user scrolls.
This is my LoadRestaurant class code which is inside the main activity.
Code:
class LoadRestaurants extends AsyncTask<String, String, String> {
//Show Progress Dialog
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(SearchAll.this);
pDialog.setMessage("Loading All Restaurants...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
protected String doInBackground(String... arg) {
//building parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
//Getting JSON from URL
String json = jsonParser.makeHttpRequest(URL_RESTAURANT_LIST, "GET", params);
//Log Cat Response Check
Log.d("Areas JSON: ", "> " + json);
try {
restaurants = new JSONArray(json);
if (restaurants != null) {
//loop through all restaurants
for (int i = 0; i < restaurants.length(); i++) {
JSONObject c = restaurants.getJSONObject(i);
//Storing each json object in the variable.
String id = c.getString(TAG_ID);
String name = c.getString(TAG_NAME);
String location = c.getString(TAG_LOCATION);
String rating = c.getString(TAG_RATING);
//Creating New Hashmap
HashMap<String, String> map = new HashMap<String, String>();
//adding each child node to Hashmap key
map.put(TAG_ID, id);
map.put(TAG_NAME, name);
map.put(TAG_LOCATION, location);
map.put(TAG_RATING, rating);
//adding HashList to ArrayList
restaurant_list.add(map);
}
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(String file_url) {
//dismiss the dialog
pDialog.dismiss();
//Updating UI from the Background Thread
runOnUiThread(new Runnable() {
@Override
public void run() {
ListAdapter adapter = new SimpleAdapter(
SearchAll.this, restaurant_list,
R.layout.listview_restaurants, new String[]{
TAG_ID, TAG_NAME, TAG_LOCATION, TAG_RATING}, new int[]{
R.id.login_id, R.id.restaurant_name, R.id.address, R.id.rating});
setListAdapter(adapter);
ListView lv = getListView();
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// Bundle bundle = new Bundle();
Intent intent = new Intent(SearchAll.this, RestaurantProfile.class);
String loginId = ((TextView) view.findViewById(R.id.login_id)).getText().toString();
intent.putExtra("login_id", loginId);
startActivity(intent);
}
});
}
});
}
}
}
I want to load around 20 restaurants and then it auto loads another 20 as soon as user reaches the end of first 20.
There are lots of tutorials online but its confusing to implement.
Please help me out!

The custom ListView, support for automatic loading you can try https://github.com/chrisbanes/Android-PullToRefresh