Android - Crop an image from multipoints
android, android-emulator, android-intent, android-layout, android-widget
Solution
I was very close to the solution. Here it is:
compositeImageView = (ImageView) findViewById(R.id.imageView);
Bitmap bitmap1=BitmapFactory.decodeResource(getResources(), R.drawable.batman_ad);
Bitmap bitmap2=BitmapFactory.decodeResource(getResources(), R.drawable.logo);
Bitmap resultingImage=Bitmap.createBitmap(320, 480, bitmap1.getConfig());
Canvas canvas = new Canvas(resultingImage);
Paint paint = new Paint();
paint.setAntiAlias(true);
Path path=new Path();
path.lineTo(150, 0);
path.lineTo(230, 120);
path.lineTo(70, 120);
path.lineTo(150, 0);
canvas.drawPath(path, paint);
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
canvas.drawBitmap(bitmap2, 0, 0, paint);
compositeImageView.setImageBitmap(resultingImage);
Problem
I need to crop a Bitmap, but instead of having a rectangular cropped image (which I managed successfully to do), I need it to be any form defined by coordinates. I'm following the answer from this thread: Cutting a multipoint ploygon out of Bitmap and placing it on transparency , and trying to implement it, but unfortunatly it does not clip the image. I did as in the description, but it seems there's a bug somewhere. The image is drawn in rectangular way. Am I missing something? ``` Bitmap originalBitmap=BitmapFactory.decodeResource(getResources(), R.drawable.test_image); // Image cropped Bitmap croppedBitmap=Bitmap.createBitmap(originalBitmap, 10, 10, 200, 200); Canvas canvas=new Canvas(croppedBitmap); // Create a path Path path=new Path(); path.setFillType(FillType.INVERSE_EVEN_ODD); path.moveTo(0, 0); path.moveTo(0, 100); path.moveTo(100, 0); path.moveTo(0, 0); // Paint with Xfermode Paint paint=new Paint(); paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR)); // Draw the path canvas.drawPath(path, paint); imageView.setImageBitmap(croppedBitmap); ```