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Editorial Team
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Asked: 2026-06-06T01:05:29+00:00

I want to read the pdf file from raw folder if devices have any

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I want to read the pdf file from raw folder if devices have any pdfreader..
Here is my code:

 Intent intent = new Intent(Intent.ACTION_VIEW,
              Uri.parse("android.resource://com.powergroupbd.pdfreader/raw" + R.raw.androidtasksmwp));

    intent.setType("application/pdf");
    PackageManager pm = getPackageManager();
    List<ResolveInfo> activities = pm.queryIntentActivities(intent, 0);
    if (activities.size() > 0) {
        startActivity(intent);
    } else {
       Toast.makeText(getApplicationContext(), "No pdfreader  found", Toast.LENGTH_LONG).show();
    }

But when i run this project it shows error.here is the logcat result:

06-21 02:05:04.408: W/dalvikvm(7763): threadid=1: thread exiting with uncaught exception (group=0x40015560)
06-21 02:05:04.418: E/AndroidRuntime(7763): FATAL EXCEPTION: main
06-21 02:05:04.418: E/AndroidRuntime(7763): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.qo.android.htcgep/com.qo.android.am.pdflib.app.RenderScreen}: java.lang.NullPointerException
06-21 02:05:04.418: E/AndroidRuntime(7763):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
06-21 02:05:04.418: E/AndroidRuntime(7763):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
06-21 02:05:04.418: E/AndroidRuntime(7763):  at android.app.ActivityThread.access$1500(ActivityThread.java:117)
06-21 02:05:04.418: E/AndroidRuntime(7763):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
06-21 02:05:04.418: E/AndroidRuntime(7763):  at android.os.Handler.dispatchMessage(Handler.java:99)
06-21 02:05:04.418: E/AndroidRuntime(7763):  at android.os.Looper.loop(Looper.java:130)
06-21 02:05:04.418: E/AndroidRuntime(7763):  at android.app.ActivityThread.main(ActivityThread.java:3683)
06-21 02:05:04.418: E/AndroidRuntime(7763):  at java.lang.reflect.Method.invokeNative(Native Method)
06-21 02:05:04.418: E/AndroidRuntime(7763):  at java.lang.reflect.Method.invoke(Method.java:507)
06-21 02:05:04.418: E/AndroidRuntime(7763):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
06-21 02:05:04.418: E/AndroidRuntime(7763):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
06-21 02:05:04.418: E/AndroidRuntime(7763):  at dalvik.system.NativeStart.main(Native Method)
06-21 02:05:04.418: E/AndroidRuntime(7763): Caused by: java.lang.NullPointerException
06-21 02:05:04.418: E/AndroidRuntime(7763):  at com.qo.android.am.pdflib.app.RenderScreen.onNewIntent(Unknown Source)
06-21 02:05:04.418: E/AndroidRuntime(7763):  at com.qo.android.am.pdflib.app.RenderScreen.onCreate(Unknown Source)
06-21 02:05:04.418: E/AndroidRuntime(7763):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
06-21 02:05:04.418: E/AndroidRuntime(7763):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
06-21 02:05:04.418: E/AndroidRuntime(7763):  ... 11 more
06-21 02:05:04.418: W/ActivityManager(96):   Force finishing activity com.qo.android.htcgep/com.qo.android.am.pdflib.app.RenderScreen

What i am doing wrong? please help..:(

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1 Answer

  1. Editorial Team

    I have never tried to do it the way you do, but I use raw resources quite successfully via following procedure:

    1. Get and InputStream for resource via

      fileResourceStream =
      Activity.getResources().openRawResource(R.raw.androidclient));//R file
      references the resource id for you. In your case it will be
      R.raw.androidtasksmwp.

    2. Using this InputStream I copy (usually once the application is installed) the resource file to either device memory or SD card (decision is yours).
      Something like this can be devised:

      BufferedInputStream bIS = new BufferedInputStream(
fileResourceStream);
try {
        BufferedOutputStream bOS = new BufferedOutputStream(
        new FileOutputStream(Globals.applicationDirPath
                + Globals.exeFileName, false));

        int BUFFER_SIZE = 4096;
        byte[] buff = new byte[BUFFER_SIZE];
        int bytesRead = bIS.read(buff, 0, BUFFER_SIZE);
        while (bytesRead >= 0) {
            bOS.write(buff, 0, bytesRead);
            bytesRead = bIS.read(buff, 0, BUFFER_SIZE);
        }
        bIS.close();
        bOS.flush();
        bOS.close();
}// try {
catch (Exception e) {
        Globals.log("Exception in checkAndCopyClientToMemory."
        + e.toString());
}

    3. Open copied file in any application/for any purpose as file.

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