Copy Apk File From Installed App

ApkBackup.java

        Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
        mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
        final List pkgAppsList = getPackageManager().queryIntentActivities(mainIntent, 0);
        int z = 0;
        for (Object object : pkgAppsList) {

            ResolveInfo info = (ResolveInfo) object;

            File f1 = new File(info.activityInfo.applicationInfo.publicSourceDir);
            Log.v("file--", " " + f1.getName().toString() + "----" + info.loadLabel(getPackageManager()));
            try {

                String file_name = info.loadLabel(getPackageManager()).toString();
                Log.d("file_name--", " " + file_name);

                // File f2 = new File(Environment.getExternalStorageDirectory().toString()+"/Folder/"+file_name+".apk");
                // f2.createNewFile();

                File f2 = new File(Environment.getExternalStorageDirectory().toString() + "/MANHDT");
                f2.mkdirs();
                f2 = new File(f2.getPath() + "/" + file_name + ".apk");
                f2.createNewFile();

                InputStream in = new FileInputStream(f1);

                OutputStream out = new FileOutputStream(f2);

                byte[] buf = new byte[1024];
                int len;
                while ((len = in.read(buf)) > 0) {
                    out.write(buf, 0, len);
                }
                in.close();
                out.close();
                System.out.println("File copied.");
            } catch (FileNotFoundException ex) {
                System.out.println(ex.getMessage() + " in the specified directory.");
            } catch (IOException e) {
                System.out.println(e.getMessage());
            }
        }