Good day.
Wrote an application that uses the class SharedPreferentses to store and retrieve settings. On the emulator works fine, but the device is not present.
After installing the application does not create a folder shared_prefs where it should be stored configuration file.
Please tell me why not create a configuration file?
Can you show us the piece of code where you instantiate sharedPrefs and the piece where you push values?
I think this will help to find the solution
xcesco89 said:
Can you show us the piece of code where you instantiate sharedPrefs and the piece where you push values?
I think this will help to find the solution
Click to expand...
Click to collapse
Code:
public String loadProperty(String nameProp) {
SharedPreferences sPref = view.getSharedPreferences("Properties", Context.MODE_PRIVATE);
return sPref.getString(nameProp, "");
}
public void saveProperty(String nameProp,String valueProp){
SharedPreferences sPref = view.getSharedPreferences("Properties", Context.MODE_PRIVATE);
Editor editor = sPref.edit();
editor.putString(nameProp, valueProp);
editor.commit();
}
Hmmm...
Have you already tried to instantiate sPrefs inside onCreate instead of instantiate it every time you have to read a value?
Basically there are no errors here.
You can eventually call:
SharedPreferences.Editor editor = sPrefs.edit();
I think the problem is in the editor because shared preferences file will be created/modified when you commit changes and "Editor" could be a bad import (I don't think, but let's exclude obvious things first)
You can also try to use default shared preferences and see what happens :
SharedPreferences mPrefs = PreferenceManager.getDefaultSharedPreferences(context);
xcesco89 said:
Hmmm...
You can also try to use default shared preferences and see what happens :
SharedPreferences mPrefs = PreferenceManager.getDefaultSharedPreferences(context);
Click to expand...
Click to collapse
I will try that , thanks
xcesco89 said:
Hmmm...
Have you already tried to instantiate sPrefs inside onCreate instead of instantiate it every time you have to read a value?
Basically there are no errors here.
You can eventually call:
SharedPreferences.Editor editor = sPrefs.edit();
I think the problem is in the editor because shared preferences file will be created/modified when you commit changes and "Editor" could be a bad import (I don't think, but let's exclude obvious things first)
You can also try to use default shared preferences and see what happens :
SharedPreferences mPrefs = PreferenceManager.getDefaultSharedPreferences(context);
Click to expand...
Click to collapse
No that is not a problem, you can instantiate shared prefs as often and where you like. Only thing is that this may be bad for your performance but that is a diffferent question.
Another little thing: you should use editor.apply() instead of editor.commit(), as apply looks for the next best possibility to write the changes to the file instead of immediately doing this. But this also just helps performance, it isnt crucial
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OS :
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I received a CAB file from my friend, and when I tried to install it, I found that it has a popup message from my friend telling me a joke...
how he do that?
and how can I change that message?
Still No Comment...!
Please Help!
I asume you know how to make a cab to start with????
As you know there are exported functions in the dll that the cab uses (you make the dll). For example this is the normal look of whats exportd. Bellow is whats in the def file.
--------------------------------------------------------------------------
; TestSetup.def : Declares the module parameters for the DLL.
LIBRARY "TESTSETUP"
;DESCRIPTION 'TESTSETUP Windows CE Dynamic Link Library'
EXPORTS
Install_Init
Install_Exit
Uninstall_Init
Uninstall_Exit
now in the code for one of those you just make a dialog like normal.
The code below is cut out of one of my working cabs. Because its in Install_Init it is the first thing to happen. Changing the method to Install_Exit would give the message after the instalation.
#include "stdafx.h"
#include "TestSetup.h"
#include "ce_setup.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#include "MyAboutDialog.h"
BOOL CALLBACK gAboutDialogProc(HWND h_dlg, UINT my_message, WPARAM wpAram, LPARAM lpAram);
static CMyAboutDialog* myAbout= new CMyAboutDialog();
BOOL CALLBACK gAboutDialogProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
return myAbout->AboutProc(hWnd,uMsg,wParam,lParam);
}
/////////////////////////////////////////////////////////////////////////////
// CTestSetupApp
BEGIN_MESSAGE_MAP(CTestSetupApp, CWinApp)
//{{AFX_MSG_MAP(CTestSetupApp)
// NOTE - the ClassWizard will add and remove mapping macros here.
// DO NOT EDIT what you see in these blocks of generated code!
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CTestSetupApp construction
CTestSetupApp::CTestSetupApp()
{
}
/////////////////////////////////////////////////////////////////////////////
// The one and only CTestSetupApp object
CTestSetupApp theApp;
/////////////////////////////////////////////////////////////////////
codeINSTALL_INIT
Install_Init( HWND hwndParent,
BOOL fFirstCall,
BOOL fPreviouslyInstalled,
LPCTSTR pszInstallDir )
{
AFX_MANAGE_STATE(AfxGetStaticModuleState());
DialogBox:AfxGetInstanceHandle(),
MAKEINTRESOURCE(IDD_AboutDIALOG),
hwndParent,
(DLGPROC)gAboutDialogProc);
return codeINSTALL_INIT_CONTINUE;
}
//------------------------------------------------------------------
Of course the detail of the dialog is in the MyAboutDialog. You just make your own to do what you want.
You can do just about anything from the code you put in the cab's dll, but a lot of the instalation should be left up to cabwiz to generate. What ever you do put in the dll will permanently reside in the windows folder until the user removes the program, so don't make it too big.
Thanks Dear OdeeanRDeathshead...
your reply is more than an informative article.
however, I hope if you can answer my second part of the question...
how can I remove the message from a CAB file that i have?
I you want to remove the message on an existing cab then that is more complicated. If you know everything that the cab dose when it gets tapped (eg registry changes etc) then you could gather all the file that the cab installs and use them to re-write them into a new cab that has no messages. This is more trouble than its worth. Unless your friend is willing to give you detailed info on what his cab dose you would be bound to miss something.
Also many messages are as a result of the os, and these vary depending on the version of os. You can't stop some of those (on every platform).
Most people would not want their instalation packages tampered with.
Try to extract the .cab file with Win CE Cab manager. Remove the Setup.dll, hopefully it does not do anything else then showing the joke Then build your own version of it.
for any complex instalation I doubt that doing that would leave you with a working instalation. Still its worth a go if it saves time. What I would like to know (not having vis studio 2005 yet) is why dose the wm2005 device always ask where you want to put the software even when you have turned this feature off? When one's coding gets a bit lazy it can all fall appart when put in a location other than that you expect.
OdeeanRDeathshead, I assume you are referring to whether to install to main memory or to SD question (this dialog pups up on WM5 device with SD inserted or built in storage).
To avoid it remove the InstDir string from your inf file (or change the string name to something else). This will force the software installation to the directory you specify in the cab.
I did not want to hard code the directory, so I used
InstallDir="%CE2%"
That should get the location of the windows folder for the install. Are you saying that if I just put
InstallDir="\windows\"
it will force it there. Dose this mean that there is a new table of Windows CE Directory Identifiers or that installs just always ask if you use them?
No, what I meant was you don’t want a string call 'InstallDir' in your inf file.
The 'InstallDir' is just a string definition you may or may not use later in the inf (like #define in C).
What determines where the files are installed is what's in the [DestinationDirs] section.
For example:
Files.Windows = 0,%CE2%
You should delete the line InstallDir = completely from your inf file, or if this string appears else where (except [CEStrings] section) just change it to something like MyDir= (be sure to change it every ware it appears in the file)
I'm trying to launch TCPMP from a small CF.NET 2.0 application, but I can't get System.Diagnostics.Process.Start to do anything for me. Here's a sample:
Code:
const string TCPMPLocation = @"\Progam Files\TCPMP\player.exe";
System.Diagnostics.ProcessStartInfo TCPMPInfo = new System.Diagnostics.ProcessStartInfo();
TCPMPInfo.FileName = TCPMPLocation;
TCPMPInfo.UseShellExecute = false;
TCPMPInfo.Arguments = null;
TCPMPInfo.WorkingDirectory = System.IO.Path.GetDirectoryName(TCPMPLocation);
System.Diagnostics.Process.Start(TCPMPInfo);
But everytime I try to run the code in the emulator, I get a Win32Exception: "The system cannot find the file specified."
I installed TCPMP on the emulator to the default location, so player.exe does appear to be in \Program Files\TCPMP. Am I specifying the path incorrectly or something?
I am not sure why is it not working since i don't have TCPMP installed. but try to run it from the explorer on the emulator and check if it runs or exists or not.
I tried ur code on another application (\windows\clock.exe) and it worked fine..
Well, it resolved itself somehow. I decided to go ahead and move the location of TCPMP to my config file instead of a constant while I waited on a reply. And of course it's working fine now that I put it there.
Thanks for looking at it.
Can you please tell me how did you resolve the issue.
did you place the path in config file?
please let me know because even i am facing the same issue
Thanks in advace!!
Dromio said:
I'm trying to launch TCPMP from a small CF.NET 2.0 application, but I can't get System.Diagnostics.Process.Start to do anything for me. Here's a sample:
Code:
const string TCPMPLocation = @"\Progam Files\TCPMP\player.exe";
System.Diagnostics.ProcessStartInfo TCPMPInfo = new System.Diagnostics.ProcessStartInfo();
TCPMPInfo.FileName = TCPMPLocation;
TCPMPInfo.UseShellExecute = false;
TCPMPInfo.Arguments = null;
TCPMPInfo.WorkingDirectory = System.IO.Path.GetDirectoryName(TCPMPLocation);
System.Diagnostics.Process.Start(TCPMPInfo);
But everytime I try to run the code in the emulator, I get a Win32Exception: "The system cannot find the file specified."
I installed TCPMP on the emulator to the default location, so player.exe does appear to be in \Program Files\TCPMP. Am I specifying the path incorrectly or something?
Click to expand...
Click to collapse
mmmmm... Isn't it ProgRam files instead of Progam? ...
That could have been it. I posted the original message months ago. And as I mentioned, it was resolved when I started using a setting to specify the path rather than hard-coding it. It's very likely that it was that typo.
I was task to allocate only 1GB of space to store my videos in a particular file directory where it is going to auto-delete the oldest video file in that directory once its about to reach/hit 1GB?
And i eventually found these code but i was left with a problem on how to incorporate these example 1/2 codes into my current existing mainActivity.java file because of the differences in names like "dirlist,tempFile" compared with other examples 1/2 given to perform the task of size checking and deleting.
Sorry i'm kinna new in android/java therefore i don't really know what "fields" to change to suit my current coding needs? Can someone help on how am i going to complie these set of codes into a single set of code which perform the above mention functions??
My Current existing mainActivity.java
Code:
File dirlist = new File(Environment.getExternalStorageDirectory() + "/VideoList");
if(!(dirlist.exists()))
dirlist.mkdir();
File TempFile = new File(Environment.getExternalStorageDirectory()
+ "/VideoList", dateFormat.format(date) + fileFormat);
mediaRecorder.setOutputFile(TempFile.getPath());
(Example 1) code for summing up directory file size in a given folder..
Code:
private static long dirSize(File dir) {
long result = 0;
Stack<File> dirlist= new Stack<File>();
dirlist.clear();
dirlist.push(dir);
while(!dirlist.isEmpty())
{
File dirCurrent = dirlist.pop();
File[] fileList = dirCurrent.listFiles();
for (int i = 0; i < fileList.length; i++) {
if(fileList[i].isDirectory())
dirlist.push(fileList[i]);
else
result += fileList[i].length();
}
}
return result;
}
(Example 2) set of code for getting all the files in an array, and sorts them depending on their modified/created date. Then the first file in your array is your oldest file and delete it.
Code:
// no idea what are the parameters i should enter
// here for my case in mainActivity??
File directory = new File((**String for absolute path to directory**);
File[] files = directory.listFiles();
Arrays.sort(files, new Comparator<File>() {
@Override
public int compare(File f1, File f2)
{
return Long.valueOf(f1.lastModified()).compareTo(f2.lastModified());
}});
file[0].delete();
imso said:
And i eventually found these code but i was left with a problem on how to incorporate these example 1/2 codes into my current existing mainActivity.java file because of the differences in names like "dirlist,tempFile" compared with other examples 1/2 given to perform the task of size checking and deleting.
Click to expand...
Click to collapse
if its a matter of variable names and discrepancies from the sample code to your code then i would recommend an ide with really good refactoring built in. it will let you in a couple clicks rename all the new vars to vars that are already in your code. i use IntelliJ (i know alot of people use Eclipse, but i cant stand it. IntelliJ is really way better to code on)
beyond that id have to sit down and look at what this code is doing to try and help. ill give it a look over but its hard to know whats going on when you havent written the code.
Hello, i just need to change a String i get from an Intent to a File so i can use listFiles().
The linecode that messes up is:
root = (File)extras.getString("newFilePath");
root is the File variable,
newFilePath is the extra i put in the Intent.
I know it could be a very easy solution but i'm out of ideas right now and i could use your help if you can help me. :cyclops:
Thanx in advance!!!
Hi!
You cannot cast file to string
Try this:
File root = new File(extras.get string("newFilePath"));
xcesco89 said:
Hi!
You cannot cast file to string
Try this:
File root = new File(extras.get string("newFilePath"));
Click to expand...
Click to collapse
This.
Just to add: when declaring a file, the syntax is:
File foo = new File(<string>);
The string can be a regular (typed) string, or can be constructed as long as the result is a string.
e.g.
File foo = new File("C:\\MyDocs\\FileName.TXT");
Edwin Bos said:
This.
Just to add: when declaring a file, the syntax is:
File foo = new File(<string>);
The string can be a regular (typed) string, or can be constructed as long as the result is a string.
e.g.
File foo = new File("C:\\MyDocs\\FileName.TXT");
Click to expand...
Click to collapse
Thanx very much both of u guys. Finally figured out and as i said it was so simple, but i'm not so experienced with Android or Java for that matter...
Now app works correctly
ive created a clean implementation rpc client that calls remote procedures to the FCRouter service. its more of a proof of concept. it doesnt use any part of RPCComponent, just straight up low level rpc. right now it only has 2 methods exposed, copyfile and createprocess. i will add more later. copyfile AFAIK isnt in RPCComponent. i could be wrong though, but it allows file copying anywhere on the system, even from hidden folders. for example, C:\dpp\microsoft\microsoft.pvk (oops). watch out though, you could hard brick your device messing with the wrong files.
i have a similar library for lumia that allows full file and reg access,but my screen on my lumia is broken, and the code is messy and has alot of hard coded memory addresses,so it wont run on any other device. when i get my replacement screen, ill fix it up and make it available (hello caps unlock).
heres the lib and the src code for anyone curious and wants to play around with it. have fun.
How to use the library
-----------------------
add <Capability Name="ID_CAP_INTEROPSERVICES"/> to WMAppManifest.xml
add a reference to RPClib.winmd
add "using RPClib" or "using namespace RPClib" declaration
c# silverlight code example
-------------------------
//instantiate the library
RPClib.ativ arpc = new RPClib.ativ();
//initialize and bind the RPC connection
arpc.RPC_Init();
//CopyFile
String src = "C:\\Data\\Users\\Public\\Pictures\\mypic.jpg";
String dst = "C:\\mypic.jpg";
UInt32 flag = 0;
arpc.RPC_CopyFileEx(src, dst, flag);
flag is a flag that determines if the copyfile operation will overwrite a file if it already exists.
1 = FAIL and do not overwrite if file exists.
0 = overwrite if file exists.
please test the flag option just in case.
//CreateProcess
String cmdline = "C:\\windows\\system32\\someinterestingfile.exe /somecommandlineoption";
arpc.RPC_CreateProcessA(cmdline);
first application using this lib + source code :
It works for file copy correctly but I weren't able to use for running process maybe I don't know how to use it
You did a amazing job.
No one to know, How to write such RPC stuff. SO Why all are uses OEM stuff ? But, You did It !!!
Thanks again @vcfan