Download and install an application (apk) from internal memory - no SD card

Question

Greetings and a happy new year to all my fellow programmers.

My code downloads an apk file from a remote server. I need to initiate the installation procedure throug

Answer 1

It it caused by android application can not read from another application file if it is written using PRIVATE mode.

You can do this:

String fileName = "tmp.apk";
FileOutputStream fos = openFileOutput(fileName,
        MODE_WORLD_READABLE | MODE_WORLD_WRITEABLE);

// write the .apk content here ... flush() and close()

// Now start the standard instalation window
File fileLocation = new File(context.getFilesDir(), fileName);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(fileLocation),
                       "application/vnd.android.package-archive");
context.startActivity(intent);

Be careful though, because that file is now world-visible, and can be seen by any application in the same device, if they know the file location.