How to draw text On image?

As suggested by Vladislav Skoumal, try this method:

public Bitmap drawTextToBitmap(Context mContext,  int resourceId,  String mText) {
    try {
         Resources resources = mContext.getResources();
         float scale = resources.getDisplayMetrics().density;
         Bitmap bitmap = BitmapFactory.decodeResource(resources, resourceId);
         android.graphics.Bitmap.Config bitmapConfig =   bitmap.getConfig();
         // set default bitmap config if none
         if(bitmapConfig == null) {
           bitmapConfig = android.graphics.Bitmap.Config.ARGB_8888;
         }
         // resource bitmaps are imutable,
         // so we need to convert it to mutable one
         bitmap = bitmap.copy(bitmapConfig, true);

         Canvas canvas = new Canvas(bitmap);
         // new antialised Paint
         Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
         // text color - #3D3D3D
         paint.setColor(Color.rgb(110,110, 110));
         // text size in pixels
         paint.setTextSize((int) (12 * scale));
         // text shadow
         paint.setShadowLayer(1f, 0f, 1f, Color.DKGRAY);

         // draw text to the Canvas center
         Rect bounds = new Rect();
         paint.getTextBounds(mText, 0, mText.length(), bounds);
         int x = (bitmap.getWidth() - bounds.width())/6;
         int y = (bitmap.getHeight() + bounds.height())/5;

         canvas.drawText(mText, x * scale, y * scale, paint);

         return bitmap;
    } catch (Exception e) {
        // TODO: handle exception

        return null;
    }

}

call this method

Bitmap bmp =drawTextToBitmap(this,R.drawable.aa,"Hello Android");
img.setImageBitmap(bmp);

the output