How to get the .apk file of an application programmatically

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It is easy to do that..

  1. First you get all installed applications,
  2. For each one, get public source directory.
  3. copy the file to the SDCard.

Note: No need to be rooted.

Here is the snippt code: 

final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
List<ResolveInfo> apps = getPackageManager().queryIntentActivities(mainIntent, 0);
for (ResolveInfo info : apps) {
    File file = new File(info.activityInfo.applicationInfo.publicSourceDir);
    // Copy the .apk file to wherever
}

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