How to draw text On image?

You can extend a view to create a custom view. Something like

public class PieView extends View { 
    public PieView(Context context) {
        super(context);
        overlayBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.piechart_shade, 
        null);
        overlayWidth  = overlayBitmap.getWidth();
        setLayoutParams(new LayoutParams(overlayWidth, overlayWidth));      
    }

    @Override     
    protected void onDraw(Canvas canvas) {      
        super.onDraw(canvas);
    }
}

In the ondraw method you can use canvas.drawBitmap and canvas.drawText to draw bitmaps and text.

This way you do not requirre a framelayout as everything is in a single custom view.

You can include this in your xml file as

<com.raj.PieView android:id="@+id/framelayout" android:layout_marginTop="30dip"      
    android:layout_height="fill_parent" android:layout_width="fill_parent"/>

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

Updated SaveImage() method, to support text drawing.

void saveImage() {
    File myDir=new File("/sdcard/saved_images");
    myDir.mkdirs();
    Random generator = new Random();
    int n = 10000;
    n = generator.nextInt(n);
    String fname = "Image-"+ n +".jpg";
    File file = new File (myDir, fname);
    if (file.exists ()) file.delete (); 
    try {
        FileOutputStream out = new FileOutputStream(file);

        // NEWLY ADDED CODE STARTS HERE [
            Canvas canvas = new Canvas(originalBitmap);

            Paint paint = new Paint();
            paint.setColor(Color.WHITE); // Text Color
            paint.setTextSize(12); // Text Size
            paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_OVER)); // Text Overlapping Pattern
            // some more settings...

            canvas.drawBitmap(originalBitmap, 0, 0, paint);
            canvas.drawText("Testing...", 10, 10, paint);
        // NEWLY ADDED CODE ENDS HERE ]

        originalBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
        out.flush();
        out.close();
    } catch (Exception e) {
       e.printStackTrace();
    }
}

Let me know if this works for you.

Shash