Fragment
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<!DOCTYPE html><html><head><title>Fragment</title><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><style type="text/css">/* GitHub stylesheet for MarkdownPad (http://markdownpad.com) *//* Author: Nicolas Hery - http://nicolashery.com *//* Version: b13fe65ca28d2e568c6ed5d7f06581183df8f2ff *//* Source: https://github.com/nicolahery/markdownpad-github *//* RESET=============================================================================*/html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, hgroup, menu, nav, output, ruby, section, summary, time, mark, audio, video { margin: 0; padding: 0; border: 0;}/* BODY=============================================================================*/body { font-family: Helvetica, arial, freesans, clean, sans-serif; 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font-family: Consolas, "Liberation Mono", Courier, monospace;}code, tt { margin: 0 0px; padding: 0px 0px; white-space: nowrap; border: 1px solid #eaeaea; background-color: #f8f8f8; border-radius: 3px;}pre>code { margin: 0; padding: 0; white-space: pre; border: none; background: transparent;}pre { background-color: #f8f8f8; border: 1px solid #ccc; font-size: 13px; line-height: 19px; overflow: auto; padding: 6px 10px; border-radius: 3px;}pre code, pre tt { background-color: transparent; border: none;}kbd { -moz-border-bottom-colors: none; -moz-border-left-colors: none; -moz-border-right-colors: none; -moz-border-top-colors: none; background-color: #DDDDDD; background-image: linear-gradient(#F1F1F1, #DDDDDD); background-repeat: repeat-x; border-color: #DDDDDD #CCCCCC #CCCCCC #DDDDDD; border-image: none; border-radius: 2px 2px 2px 2px; border-style: solid; border-width: 1px; font-family: "Helvetica Neue",Helvetica,Arial,sans-serif; line-height: 10px; padding: 1px 4px;}/* QUOTES=============================================================================*/blockquote { border-left: 4px solid #DDD; padding: 0 15px; color: #777;}blockquote>:first-child { margin-top: 0px;}blockquote>:last-child { margin-bottom: 0px;}/* HORIZONTAL RULES=============================================================================*/hr { clear: both; margin: 15px 0; height: 0px; overflow: hidden; border: none; background: transparent; border-bottom: 4px solid #ddd; padding: 0;}/* TABLES=============================================================================*/table th { font-weight: bold;}table th, table td { border: 1px solid #ccc; padding: 6px 13px;}table tr { border-top: 1px solid #ccc; background-color: #fff;}table tr:nth-child(2n) { background-color: #f8f8f8;}/* IMAGES=============================================================================*/img { max-width: 100%}</style></head><body><h1>Fragment android碎片化管理</h1><p>2015年12月29日 </p><hr /><h3>静态使用方式:</h3><pre><code>简单使用方式:在布局文件(XML) 中 加入fragment标签 设置宽 高 name在src文件夹中 新建一个Class文件, 继承自 Fragment (app.fragment)重写生命周期方法 :最少重写一个 OncreateView();/** * 与Activity 绑定 */@Overridepublic void onAttach(Activity activity) { // TODO Auto-generated method stub super.onAttach(activity); logI("onAttach");}// Activity 开始执行Oncerat方法@Overridepublic void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); logI("onCreate");}//创建Fragment视图 通过布局填充器public View onCreateView(android.view.LayoutInflater inflater, android.view.ViewGroup container, Bundle savedInstanceState) { logI("onCreateView"); return inflater.inflate(R.layout.fragment1,container, false);}//绑定的Activity 的 oncreate方法 执行完毕@Overridepublic void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); logI("onActivityCreated"); tv = (TextView) getView().findViewById(R.id.fragment1_tv); tv.setText("我在运行时就被改变了");}@Overridepublic void onStart() { // TODO Auto-generated method stub super.onStart(); logI("onStart");}@Overridepublic void onResume() { // TODO Auto-generated method stub super.onResume(); logI("onResume");}@Overridepublic void onPause() { // TODO Auto-generated method stub super.onPause(); logI("onPause");}@Overridepublic void onStop() { // TODO Auto-generated method stub super.onStop(); logI("onStop");}//销毁视图@Overridepublic void onDestroyView() { // TODO Auto-generated method stub super.onDestroyView(); logI("onDestroyView");}//准备销毁自己@Overridepublic void onDestroy() { // TODO Auto-generated method stub super.onDestroy(); logI("onDestroy");}//与Activity 解除绑定@Overridepublic void onDetach() { // TODO Auto-generated method stub super.onDetach(); logI("onDetach");}</code></pre><h3>动态使用方式:</h3><pre><code>步骤:1. 在布局文件中 加入FrameLayout 给Fragment一个空间, 用来动态的放入Fragment 2. 在JAVA代码中 通过new 创建一个Fragment的对象 3. 开启Fragment事物 1. 在android3.0以上(使用app包下的Fragment)通过getFragmentManager().beginTransaction()开启Fragment事务 2. 在android3.0以下(使用v4包底下的fragment), 需要当前Activity继承自FragmentActivity , 然后调用getSupportFragmentManager().beginTransaction()开启Fragment事物; 4. 提交事物 beginTransaction.commit(); 事物 常用方法: //add方法:绑定一个fragment到framelayout上 两个参数 : 1.需要把参数二fragment放入哪个位置 , 2.fragment对象 .add(R.id.act_main_framelayout, frags.get(0)) remove 方法:从一个framelayout上移除一个fragment 参数一: 要移除的fragment对象 beginTransaction.remove(frags.get(0)); hede方法: 隐藏一个fragment 参数一: 要隐藏的fragment对象 beginTransaction.hide(frags.get(0)); show方法: 显示一个之前隐藏的fragment对象 参数一: 要显示的fragment beginTransaction.show(frags.get(0)); addToBackStack方法: 将当前fragment加入回退栈 addToBackStack(null); 最常用方法: replace(R.id.act_main_framelayout, frags.get(0)); 此方法 是remove与add方法的结合 , </code></pre></body></html><!-- This document was created with MarkdownPad, the Markdown editor for Windows (http://markdownpad.com) -->
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