/*
* 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
}
}