Cocos2D-Android-1之源码详解:1.Cocos2D
/* * Copyright (C) 2007 The Android Open Source Project * * Licensed under the Apache License,Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing,software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.cocos2d; import java.text.Collator; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.HashMap; import java.util.List; import java.util.Map; import android.app.ListActivity; import android.content.Intent; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.os.Bundle; import android.view.View; import android.widget.ListView; import android.widget.SimpleAdapter; public class Cocos2D extends ListActivity {//这个类用了ListActivity @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //继承 ListActivity 的onCreate方法 //以下是设置list里的适配器 setListAdapter(new SimpleAdapter(this,//新的简单适配器,运用了自己的上下文 (List<Map<String,?>>)getData("org.cocos2d.tests"),//getData是个方法,getData(String)往下看有方法的声明 android.R.layout.simple_list_item_1,new String[]{"title"}, new int[]{android.R.id.text1})); getListView().setTextFilterEnabled(true);//启用过滤窗口 } protected List<?> getData(String prefix) {//即上述方法 List<Map<String,?>> myData = new ArrayList<Map<String,?>>();//一个用来盛放map的list,map立盛放String Intent mainIntent = new Intent(Intent.ACTION_MAIN,null);//意图指定跳到系统桌面 mainIntent.addCategory(Intent.CATEGORY_TEST);//供测试使用 PackageManager pm = getPackageManager();//包控制器,用来获得现在有的进程 List<ResolveInfo> list = pm.queryIntentActivities(mainIntent,0);//通过Intent查找相关的Activity,更准确 if (null == list)//没找到那个测试意图 return myData;//就结束 /* 以下是个没有被使用的方法用来分割字符串,用/ String[] prefixPath; if (prefix.equals("")) { prefixPath = null; } else { prefixPath = prefix.split("/"); }*/ int len = list.size();//得到list的长度 // Map<String,Boolean> entries = new HashMap<String,Boolean>();//一个没有被使用的map,用了哈希类型的map for (int i = 0; i < len; i++) { ResolveInfo info = list.get(i);//用来循环刚才得到的那个list String activityName = info.activityInfo.name;//得到activity的名字 if (prefix.length() == 0 || activityName.startsWith(prefix)) {//如果要查找的那个activity的包名长度为0或者与我们要找的那个名字是以这个开头的 String[] labelPath = activityName.split(".");//把包名用.分开 String nextLabel = labelPath[labelPath.length - 1];//得到最后一个.后面的名字,即类名 addItem(myData,nextLabel,activityIntent(//现在把他添加到mydata的集合,这个方法在后面会出现,就是分别把各种信息用map区分了 info.activityInfo.applicationInfo.packageName, info.activityInfo.name)); } } Collections.sort(myData,sDisplayNameComparator);//Collections是个很有用的集合,其中有个sort是用来排序的,参数中sDisplayNameComparator是个比较方法 return myData; } //下面这个定义,乍一看是方法,其实是个字段,定义一个比较方法的引用 private final static Comparator<Map<String,?>> sDisplayNameComparator = new Comparator<Map<String,?>>() {//对那个引用的实现 private final Collator collator = Collator.getInstance();//新疆一个集合 public int compare(Map<String,?> map1,Map<String,?> map2) {//两个的比较规则 return collator.compare(map1.get("title"),map2.get("title"));//就是比较他们字符的那种方法,就是从左到右一个一个字母,比ascll码 } }; protected Intent activityIntent(String pkg,String componentName) { Intent result = new Intent(); result.setClassName(pkg,componentName);//设置意图从哪个包到哪个类 return result; } protected Intent browserIntent(String path) { Intent result = new Intent(); result.setClass(this,Cocos2D.class);//设置从哪个class到哪 result.putExtra("org.cocos2d.tests.Path",path);//加一个额外的变量 return result; } protected void addItem(List<Map<String,?>> data,String name,Intent intent) { Map<String,Object> temp = new HashMap<String,Object>(); temp.put("title",name); temp.put("intent",intent); data.add(temp);//对data添加项目 } @Override protected void onListItemClick(ListView l,View v,int position,long id) { Map<String,?> map = (Map<String,?>) l.getItemAtPosition(position);//得到点击了哪个包 Intent intent = (Intent) map.get("intent");//找到那个类全名 startActivity(intent);//打开那个类 } } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |