Cocos2D-Android-1之源码详解：1.Cocos2D

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* you may not use this file except in compliance with the License.

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* http://www.apache.org/licenses/LICENSE-2.0

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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

}

原文地址：https://www.jb51.cc/cocos2dx/340624.html

Cocos2D-Android-1之源码详解：1.Cocos2D

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