1 问题

Canvas的drawRoundRect()函数怎么用

public void drawRoundRect(RectF rect, float rx, float ry, Paint paint)

功能：该方法用于在画布上绘制圆角矩形，通过指定RectF对象以及圆角半径来实现。float rx：生成圆角的椭圆的X轴半径
float ry：生成圆角的椭圆的Y轴半径

 

 

 

 

 

 

 

 

 

2 代码实现

 TestView.java文件如下

package com.onemt.sdk.circle;import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.view.View;import androidx.annotation.NonNull;
import androidx.annotation.Nullable;public class TestView extends View {private Paint mPaint;private RectF rectf;public TestView(@NonNull Context context) {super(context);init();}public TestView(@NonNull Context context, @