Android 实现切圆图作为头像使用实例
16lz
2021-01-23
Android 切圆图
效果图如下：
MyView 类
public class MyView extends View { Bitmap bmp; Paint paint = new Paint(); public MyView(Context context) { super(context); } public MyView(Context context, AttributeSet attrs) { super(context, attrs); bmp = BitmapFactory.decodeResource(getResources(), R.mipmap.c); src = new RectF(bmp.getWidth() / 2 - 50, bmp.getHeight() / 2 - 50, bmp.getWidth() / 2 + 50, bmp.getHeight() / 2 + 50); dst = new Rect(200, 200, 400, 400); paint.setAntiAlias(true); paint.setDither(true); Shader shaer = new BitmapShader(bmp, Shader.TileMode.MIRROR, Shader.TileMode.REPEAT); paint.setShader(shaer); } private RectF src = null; private Rect dst = null; @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); //绘制Bitmap Matrix m = new Matrix(); //每次set都会重置矩形 m.setRotate(90, bmp.getWidth() / 2, bmp.getHeight() / 2); m.postTranslate(100, 100); m.preScale(0.5f, 0.5f, bmp.getWidth() / 2, bmp.getHeight() / 2); //错切 m.postSkew(0.3f, 0.3f); // canvas.drawBitmap(bmp, m, null); // canvas.drawBitmap(bmp, src, dst, null); //拿view的高宽 canvas.drawArc(src, 100, 270, true, paint); }} MainActivity 类
public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); }} xml
<?xml version="1.0" encoding="utf-8"?>
感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！
更多相关文章
- Android利用canvas画各种图形(点、直线、弧、圆、椭圆、文字、矩
- appium 【已解决】Android，每次启动手机中都会安装Appium setting
- Android绘制一条边为弧形的矩形
- Android shape实现订单卡片制作（shape画半圆及矩形圆角、渐变、虚
- Android最实用的各种技能点的网址链接（每天都会更新，希望大家用的
- drawRoundRect方法：绘制圆角矩形
- Android上实现柱状图表 可实现边框矩形 没填充色