Android custom rounded View

public class CustomView extends View {
    private float cornerRadius;

    public CustomView(Context context) {
        super(context);
        init();
    }

    public CustomView(Context context, AttributeSet attrs) {
        super(context, attrs);
        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.CustomView);
        cornerRadius = typedArray.getDimension(R.styleable.CustomView_cornerRadius, 0);
        typedArray.recycle();
        init();
    }

    private void init() {
        // 设置outline provider
        setOutlineProvider(new ViewOutlineProvider() {
            @Override
            public void getOutline(View view, Outline outline) {                 // create a rounded rectangle outline                 outline.setRoundRect(0, 0, view.getWidth(), view.getHeight(), cornerRadius);             }         });         // open The view clips to the outline         setClipToOutline(true);     } }

2. The second method, using ShapeableImageView to customize rounded corners