Android中获取所有应用程序信息

package com.qin.appinfo; import java.util.ArrayList; import java.util.Collections; import java.util.List; import android.app.Activity; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.pm.ApplicationInfo; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.graphics.drawable.Drawable; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.ListView; import android.widget.TextView; import android.widget.AdapterView.OnItemClickListener; public class MainActivity extends Activity implements OnItemClickListener { private ListView listview = null; private List<AppInfo> mlistAppInfo = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.browse_app_list); listview = (ListView) findViewById(R.id.listviewApp); mlistAppInfo = new ArrayList<AppInfo>(); queryAppInfo(); // 查询所有应用程序信息 BrowseApplicationInfoAdapter browseAppAdapter = new BrowseApplicationInfoAdapter( this, mlistAppInfo); listview.setAdapter(browseAppAdapter); listview.setOnItemClickListener(this); } // 点击跳转至该应用程序 public void onItemClick(AdapterView<?> arg0, View view, int position, long arg3) { // TODO Auto-generated method stub Intent intent = mlistAppInfo.get(position).getIntent(); startActivity(intent); } // 获得所有启动Activity的信息，类似于Launch界面 public void queryAppInfo() { PackageManager pm = this.getPackageManager(); // 获得PackageManager对象 Intent mainIntent = new Intent(Intent.ACTION_MAIN, null); mainIntent.addCategory(Intent.CATEGORY_LAUNCHER); // 通过查询，获得所有ResolveInfo对象. List<ResolveInfo> resolveInfos = pm .queryIntentActivities(mainIntent, PackageManager.MATCH_DEFAULT_ONLY); // 调用系统排序 ， 根据name排序 // 该排序很重要，否则只能显示系统应用，而不能列出第三方应用程序 Collections.sort(resolveInfos,new ResolveInfo.DisplayNameComparator(pm)); if (mlistAppInfo != null) { mlistAppInfo.clear(); for (ResolveInfo reInfo : resolveInfos) { String activityName = reInfo.activityInfo.name; // 获得该应用程序的启动Activity的name String pkgName = reInfo.activityInfo.packageName; // 获得应用程序的包名 String appLabel = (String) reInfo.loadLabel(pm); // 获得应用程序的Label Drawable icon = reInfo.loadIcon(pm); // 获得应用程序图标 // 为应用程序的启动Activity 准备Intent Intent launchIntent = new Intent(); launchIntent.setComponent(new ComponentName(pkgName, activityName)); // 创建一个AppInfo对象，并赋值 AppInfo appInfo = new AppInfo(); appInfo.setAppLabel(appLabel); appInfo.setPkgName(pkgName); appInfo.setAppIcon(icon); appInfo.setIntent(launchIntent); mlistAppInfo.add(appInfo); // 添加至列表中 } } } }