package com.activity.liangweihang_yizhou
;
import android.content.Context
;
import android.graphics.Canvas
;
import android.graphics.Color
;
import android.graphics.Paint
;
import android.graphics.Path
;
import android.util.AttributeSet
;
import android.widget.RelativeLayout
;
public class MyView
extends RelativeLayout {
public MyView(Context context) {
this(context
,null)
;
}
public MyView(Context context
, AttributeSet attrs
, int defStyleAttr) {
super(context
, attrs
, defStyleAttr)
;
}
public MyView(Context context
, AttributeSet attrs) {
this(context
, attrs
,0)
;
}
protected void onMeasure(
int widthMeasureSpec
, int heightMeasureSpec) {
/* int widthMode = MeasureSpec.getMode(widthMeasureSpec);
int widthSize = MeasureSpec.getSize(widthMeasureSpec);
int hightMode = MeasureSpec.getMode(heightMeasureSpec);
int hightSize = MeasureSpec.getSize(heightMeasureSpec);
int width,hight;
if (widthMode==MeasureSpec.EXACTLY){
if (widthSize<DensityUtil.dip2px(getContext(),50 ))
widthSize=DensityUtil.dip2px(getContext(),50 );
}
if (hightMode==MeasureSpec.EXACTLY){
if (hightSize<DensityUtil.dip2px(getContext(),50 ))
hightSize=DensityUtil.dip2px(getContext(),50 );
}
width=MeasureSpec.makeMeasureSpec(widthSize,widthMode);
hight=MeasureSpec.makeMeasureSpec(hightSize,hightMode);*/
super.onMeasure(widthMeasureSpec
, heightMeasureSpec)
;
}
protected void onDraw(Canvas canvas) {
super.onDraw(canvas)
;
Paint mpaint=
new Paint()
;
mpaint.setColor(Color.
YELLOW)
;
mpaint.setStyle(Paint.Style.
FILL)
;
canvas.drawCircle(getWidth()/
2,getHeight()/
2,155,mpaint)
;
Paint zpaint=
new Paint()
;
// 绘制这个三角形,你可以绘制任意多边形
Path path =
new Path()
;
path.moveTo(getWidth()/
2, (getHeight()/
2)-
155)
;// 此点为多边形的起点
path.lineTo((getWidth()/
2)-
137, ((getHeight()/
2)+(
155/
2)))
;
path.lineTo((getWidth()/
2)+
137, ((getHeight()/
2)+(
155/
2)))
;
path.close()
; // 使这些点构成封闭的多边形
canvas.drawPath(path
, zpaint)
;
}
}
//布局文件
<com.activity.liangweihang_yizhou.MyView
android:background="#ff55"
android:layout_width="300dp"
android:layout_height="300dp"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
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