How to programmatically take a screenshot?

Question

How can I take a screenshot of a selected area of phone-screen not by any program but from code?

Answer 1

You can try to do something like this,

Getting a bitmap cache from a layout or a view by doing something like First you gotta setDrawingCacheEnabled to a layout(a linearlayout or relativelayout, or a view)

then

Bitmap bm = layout.getDrawingCache()

Then you do whatever you want with the bitmap. Either turning it into an image file, or send the bitmap's uri to somewhere else.

Answer 2

The parameter view is the root layout object.

public static Bitmap screenShot(View view) {
                    Bitmap bitmap = null;
                    if (view.getWidth() > 0 && view.getHeight() > 0) {
                        bitmap = Bitmap.createBitmap(view.getWidth(),
                                view.getHeight(), Bitmap.Config.ARGB_8888);
                        Canvas canvas = new Canvas(bitmap);
                        view.draw(canvas);
                    }
                    return bitmap;
                }

Answer 3

Call this method, passing in the outer most ViewGroup that you want a screen shot of:

public Bitmap screenShot(View view) {
    Bitmap bitmap = Bitmap.createBitmap(view.getWidth(),
            view.getHeight(), Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    view.draw(canvas);
    return bitmap;
}

Answer 4

If you want to take screenshot from fragment than follow this:

1. Override onCreateView():

            @Override
           public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                    Bundle savedInstanceState) {
               // Inflate the layout for this fragment
               View view = inflater.inflate(R.layout.fragment_one, container, false);
               mView = view;
           }
   

2. Logic for taking screenshot:

    button.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        View view =  mView.findViewById(R.id.scrollView1);
         shareScreenShotM(view, (NestedScrollView) view); 
    }
   

3. method shareScreenShotM)():

   public void shareScreenShotM(View view, NestedScrollView scrollView){
   
        bm = takeScreenShot(view,scrollView);  //method to take screenshot
       File file = savePic(bm);  // method to save screenshot in phone.
       }
   

4. method takeScreenShot():

            public Bitmap takeScreenShot(View u, NestedScrollView z){
   
               u.setDrawingCacheEnabled(true);
               int totalHeight = z.getChildAt(0).getHeight();
               int totalWidth = z.getChildAt(0).getWidth();
   
               Log.d("yoheight",""+ totalHeight);
               Log.d("yowidth",""+ totalWidth);
               u.layout(0, 0, totalWidth, totalHeight);
               u.buildDrawingCache();
               Bitmap b = Bitmap.createBitmap(u.getDrawingCache());
               u.setDrawingCacheEnabled(false);
               u.destroyDrawingCache();
                return b;
           }
   

5. method savePic():

    public static File savePic(Bitmap bm){
   
           ByteArrayOutputStream bytes = new ByteArrayOutputStream();
           bm.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
            File sdCardDirectory =  new File(Environment.getExternalStorageDirectory() + "/Foldername");
   
          if (!sdCardDirectory.exists()) {
               sdCardDirectory.mkdirs();
         }
          //  File file = new File(dir, fileName);
         try {
            file = new File(sdCardDirectory, Calendar.getInstance()
               .getTimeInMillis() + ".jpg");
           file.createNewFile();
           new FileOutputStream(file).write(bytes.toByteArray());
           Log.d("Fabsolute", "File Saved::--->" + file.getAbsolutePath());
            Log.d("Sabsolute", "File Saved::--->" + sdCardDirectory.getAbsolutePath());
        } catch (IOException e) {
             e.printStackTrace();
         }
        return file;
      }
   

For activity you can simply use View v1 = getWindow().getDecorView().getRootView(); instead of mView

Answer 5

Based on the answer of @JustinMorris above and @NiravDangi here https://stackoverflow.com/a/8504958/2232148 we must take the background and foreground of a view and assemble them like this:

public static Bitmap takeScreenshot(View view, Bitmap.Config quality) {
    Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), quality);
    Canvas canvas = new Canvas(bitmap);

    Drawable backgroundDrawable = view.getBackground();
    if (backgroundDrawable != null) {
        backgroundDrawable.draw(canvas);
    } else {
        canvas.drawColor(Color.WHITE);
    }
    view.draw(canvas);

    return bitmap;
}

The quality parameter takes a constant of Bitmap.Config, typically either Bitmap.Config.RGB_565 or Bitmap.Config.ARGB_8888.

Answer 6

For system applications only!

Process process;
process = Runtime.getRuntime().exec("screencap -p " + outputPath);
process.waitFor();

Note: System applications don't need to run "su" to execute this command.