Create Bitmap shapes or clear a section of bitmap -Android

Create Bitmap shapes or clear a section of bitmap


First of all i would say i was pretty confused in doing this task

but later on it became like a cake walk



this is pretty  simple just basic mathematics , kind of set language may be

For doing this i need two images one is the mask image and other is the frame image

just like the above images one image is inner and outer heart is transparent  and one with outside alone transparent what we gonna do is combine this two images

using a image view and bitmap thats it find the code below

public void makeMaskImage(ImageView mImageView, Bitmap mContent)

{

//Bitmap original = BitmapFactory.decodeResource(getResources(), mContent);

    Bitmap original = mContent;

Bitmap mask = BitmapFactory.decodeResource(getResources(),R.drawable.heart_1_mask);

Bitmap result = Bitmap.createBitmap(mask.getWidth(), mask.getHeight(), Config.ARGB_8888);

Canvas mCanvas = new Canvas(result);

Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);

paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));

mCanvas.drawBitmap(original, 0, 0, null);

mCanvas.drawBitmap(mask, 0, 0, paint);

paint.setXfermode(null);

mImageView.setImageBitmap(result);

mImageView.setScaleType(ScaleType.FIT_START);

mImageView.setBackgroundResource(R.drawable.heart_1_frame);

} 

this does the job for me,Happy coding