Take backup of all install apk file into sdcard programmatically in Android [duplicate]

Answer 1

Try this..

final 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()+"/Folder");   
                    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());      
                }
        }