使用示例:
//ImageView iv = ...
ViewOutlineProvider viewOutlineProvider = new ViewOutlineProvider() {
@Override
public void getOutline(View view, Outline outline) {
float radius = ConvertUtils.dp2px(10);//10dp
outline.setRoundRect(0, 0, view.getWidth(), view.getHeight(), radius);
}
};
iv.setOutlineProvider(viewOutlineProvider);
iv.setClipToOutline(true);//裁剪
实现抽象类
android.view.ViewOutlineProvider 的方法
android.view.ViewOutlineProvider#getOutline(android.view.View, android.graphics.Outline)
android.graphics.Outline的主要api如下:
android.graphics.Outline#set
android.graphics.Outline#setAlpha
android.graphics.Outline#setRect(int, int, int, int)
android.graphics.Outline#setRect(android.graphics.Rect)
android.graphics.Outline#setRoundRect(int, int, int, int, float)
android.graphics.Outline#setRoundRect(android.graphics.Rect, float)
android.graphics.Outline#setOval(int, int, int, int)
android.graphics.Outline#setOval(android.graphics.Rect)
android.graphics.Outline#setConvexPath