android view 中各函数的执行顺数

这个就好像是 activity 的生命周期一样，如果我们要使用自定义的 view，那么就很有必要了解一下 view 的那些能够被重写的函数的执行顺序。废话不多讲，以常用的5个函数为例子，见下文：

 package com.example.pulltorefreshtest;

 import android.content.Context;
 import android.graphics.Canvas;
 import android.util.AttributeSet;
 import android.util.Log;
 import android.view.View;

 /**
  * Created by Administrator on 2015/7/12.
  */
 public class testView extends View {
     public testView(Context context, AttributeSet attrs) {
         super(context, attrs);
     }

     @Override
     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
         Log.d("------","---onMeasure");
         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
     }

     @Override
     protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
         Log.d("------","---onLayout");
         super.onLayout(changed, left, top, right, bottom);
     }

     @Override
     protected void onFinishInflate() {
         Log.d("------","---onFinanshInflate");
         super.onFinishInflate();
     }

     @Override
     protected void onDraw(Canvas canvas) {
         Log.d("------","---onDraw");
         super.onDraw(canvas);
     }

     @Override
     protected void onSizeChanged(int w, int h, int oldw, int oldh) {
         Log.d("------","---onSizeChanged");
         super.onSizeChanged(w, h, oldw, oldh);
     }
 }

运行结果：

07-12 13:44:45.413  23734-23734/? D/------﹕ ---onFinanshInflate
07-12 13:44:45.443  23734-23734/? D/------﹕ ---onMeasure
07-12 13:44:45.493  23734-23734/? D/------﹕ ---onSizeChanged
07-12 13:44:45.493  23734-23734/? D/------﹕ ---onLayout
07-12 13:44:45.503  23734-23734/? D/------﹕ ---onMeasure
07-12 13:44:45.503  23734-23734/? D/------﹕ ---onLayout
07-12 13:44:45.503  23734-23734/? D/------﹕ ---onDraw