图片自定义圆角

最新推荐文章于 2025-05-19 21:16:49 发布

原创最新推荐文章于 2025-05-19 21:16:49 发布 · 377 阅读

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获得网络图片需要圆角展示时，需要根据图片的宽高来分别绘制四个角圆角弧度。

public class RoundImageView extends ImageView {



    float width,height;



    public RoundImageView(Context context) {

        this(context, null);

    }



    public RoundImageView(Context context, AttributeSet attrs) {

        this(context, attrs, 0);

    }



    public RoundImageView(Context context, AttributeSet attrs, int defStyleAttr) {

        super(context, attrs, defStyleAttr);

        if (Build.VERSION.SDK_INT < 18) {

            setLayerType(View.LAYER_TYPE_SOFTWARE, null);

        }

    }



    @Override

    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {

        super.onLayout(changed, left, top, right, bottom);

        width = getWidth();

        height = getHeight();

    }



    @Override

    protected void onDraw(Canvas canvas) {



        if (width > 12 && height > 12) {

            Path path = new Path();

            path.moveTo(12, 0);

            path.lineTo(width - 12, 0);

            path.quadTo(width, 0, width, 12);

            path.lineTo(width, height - 12);

            path.quadTo(width, height, width - 12, height);

            path.lineTo(12, height);

            path.quadTo(0, height, 0, height - 12);

            path.lineTo(0, 12);

            path.quadTo(0, 0, 12, 0);

            canvas.clipPath(path);

        }



        super.onDraw(canvas);

    }

}

最后在xml文件中直接引用就可以了