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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：

 1 package com.example.pulltorefreshtest;  2   3 import android.content.Context;  4 import android.graphics.Canvas;  5 import android.util.AttributeSet;  6 import android.util.Log;  7 import android.view.View;  8   9 /** 10  * Created by Administrator on 2015/7/12. 11  */ 12 public class testView extends View { 13     public testView(Context context, AttributeSet attrs) { 14         super(context, attrs); 15     } 16  17     @Override 18     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 19         Log.d("------","---onMeasure"); 20         super.onMeasure(widthMeasureSpec, heightMeasureSpec); 21     } 22  23     @Override 24     protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 25         Log.d("------","---onLayout"); 26         super.onLayout(changed, left, top, right, bottom); 27     } 28  29     @Override 30     protected void onFinishInflate() { 31         Log.d("------","---onFinanshInflate"); 32         super.onFinishInflate(); 33     } 34  35     @Override 36     protected void onDraw(Canvas canvas) { 37         Log.d("------","---onDraw"); 38         super.onDraw(canvas); 39     } 40  41     @Override 42     protected void onSizeChanged(int w, int h, int oldw, int oldh) { 43         Log.d("------","---onSizeChanged"); 44         super.onSizeChanged(w, h, oldw, oldh); 45     } 46 }

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

正文到此结束