Android获得当前安装的所有应用程序列表

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    lView = (ListView) findViewById(R.id.list1);

    PackageManager pm = this.getPackageManager();
    Intent intent = new Intent(Intent.ACTION_MAIN,null);
    intent.addCategory(Intent.CATEGORY_LAUNCHER);

    List list = pm.queryIntentActivities(intent,PackageManager.PERMISSION_GRANTED);

    for (ResolveInfo rInfo : list) {
        results.add(rInfo.activityInfo.applicationInfo.loadLabel(pm).toString());
        Log.w("Installed Applications",rInfo.activityInfo.applicationInfo.loadLabel(pm).toString());
    }

    lView.setAdapter(new ArrayAdapter(this,android.R.layout.simple_ list_item_1,results));
}