Android SearchView赢得'；t在ListView中筛选正确的应用程序

我有一个列表视图，显示我安装的应用程序。我想要一个搜索视图，过滤掉与我的搜索不匹配的应用。我该怎么做？我试过：

SearchView sv;



@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Log.e("Test29", "93");
    setContentView(R.layout.activity_apps_list);
    sv = (SearchView) findViewById(R.id.searchView1);

    loadApps();
    loadListView();
    addClickListener();
}


private PackageManager manager;
private List<AppDetail> apps;

private void loadApps(){
    manager = getPackageManager();
    apps = new ArrayList<AppDetail>();

    Intent i = new Intent(Intent.ACTION_MAIN, null);
    i.addCategory(Intent.CATEGORY_LAUNCHER);

    List<ResolveInfo> availableActivities = manager.queryIntentActivities(i, 0);
    for(ResolveInfo ri:availableActivities){
        AppDetail app = new AppDetail();
        app.label = ri.loadLabel(manager);
        app.name = ri.activityInfo.packageName;
        app.icon = ri.activityInfo.loadIcon(manager);
        apps.add(app);
    }
    Log.e("Test29", "93");
}



private ListView list;

private void loadListView(){
    list = (ListView)findViewById(R.id.apps_list);

    final ArrayAdapter<AppDetail> adapter = new ArrayAdapter<AppDetail>(this, R.layout.list_item, apps) {
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            if(convertView == null){
                convertView = getLayoutInflater().inflate(R.layout.list_item, null);
            }

            ImageView appIcon = (ImageView)convertView.findViewById(R.id.item_app_icon);
            appIcon.setImageDrawable(apps.get(position).icon);

            TextView appLabel = (TextView)convertView.findViewById(R.id.item_app_label);
            appLabel.setText(apps.get(position).label);

            return convertView;
        }
    };

    Log.e("Test29", "93");

    Collections.sort(apps, new Comparator<AppDetail>() {

/* This comparator will sort AppDetail objects alphabetically. */

        @Override
        public int compare(AppDetail a1, AppDetail a2) {

            // String implements Comparable
            return (a1.label.toString()).compareTo(a2.label.toString());
        }
    });

    list.setAdapter(adapter);

这是AppDetail类：

public class AppDetail {

    CharSequence label;
    CharSequence name;
    Drawable icon;
}

---

但是当我开始打字时，什么都没有显示。如果我开始为“脸谱”输入“Fa”，脸谱就消失了。我之所以把它放在处理程序中，是因为我认为加载所有应用程序需要一些时间。

post

AppDetail

class添加了AppDetail类nowoverride

toString

method returning

label

What？我对编程非常陌生：Doverride

AppDetail.toString

方法，请参阅或

public class AppDetail {

    CharSequence label;
    CharSequence name;
    Drawable icon;
}