第一种 自定义view
//自定义view的宽高尺寸
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
// super.onMeasure(widthMeasureSpec, heightMeasureSpec);
width=MeasureSpec.getSize(widthMeasureSpec);
height=MeasureSpec.getSize(heightMeasureSpec);
int minWidth=150;
int minHeight=100;
if (width<minWidth){
width=minWidth;
}
if(height<minHeight){
height=minHeight;
}
setMeasuredDimension(width,height);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
Paint paint = new Paint();
paint.setAntiAlias(true); //设置画笔为无锯齿
paint.setColor(Color.WHITE); //设置画笔颜色
//canvas.drawColor(Color.WHITE); //白色背景
paint.setStrokeWidth((float) 3.0); //线宽
paint.setStyle(Paint.Style.FILL); //实心效果
RectF rectF= new RectF(0,0,width,height);
canvas.drawRoundRect(rectF,30,30,paint);
}
第二种 shape 在drawable下新建一个shape.xml
<?xml version="1.0" encoding="utf-8"?>
<shape android:shape="rectangle"
xmlns:android="http://schemas.android.com/apk/res/android">
<!-- solid指定形状的填充色，只有android:color一个属性 -->
<solid android:color="#FFFFFF" />
<!-- padding设置内容区域离边界的间距 -->
<!-- corners设置圆角，只适用于rectangle -->
<corners android:radius="200dp" />
</shape>
