android 5.0新特性学习--视图轮廓

ViewOutlineProvider viewOutlineProvider = new ViewOutlineProvider() {  
    //
    @Override  
    public void getOutline(View view, Outline outline) {  
        int size = getResources().getDimensionPixelSize(R.dimen.fab_size);  
        //将视图截成圆角矩形
        outline.setOval(0, 0, size, size);  
    }  
};  
//将轮廓提供者与待裁剪的view绑定
fab.setOutlineProvider(viewOutlineProvider);

int margin = Math.min(clippedView.getWidth(), clippedView.getHeight()) / 10;  
Outline mClip = new Outline();  
mClip.setRoundRect(margin, margin, clippedView.getWidth() - margin,  
        clippedView.getHeight() - margin, margin / 2);  
/* Sets the Outline of the View. */  
clippedView.setOutline(mClip);  
/* Enables clipping on the View. */  
clippedView.setClipToOutline(true);