android - 按字母顺序排序列表

Question

我正在开发一个应用程序，我在其中创建一个包含已安装应用程序的列表并让用户选择一个。除了一件事，我一切正常；按字母顺序排列它们。这是我正在使用的代码:

private List<App> loadInstalledApps(boolean includeSysApps) {
  List<App> apps = new ArrayList<App>();

  PackageManager packageManager = getPackageManager();

  List<PackageInfo> packs = packageManager.getInstalledPackages(0); 

  for(int i=0; i < packs.size(); i++) {
     PackageInfo p = packs.get(i);

     App app = new App();
     app.setTitle(p.applicationInfo.loadLabel(packageManager).toString());
     app.setPackageName(p.packageName);
     app.setVersionName(p.versionName);
     app.setVersionCode(p.versionCode);
     CharSequence description = p.applicationInfo.loadDescription(packageManager);
     app.setDescription(description != null ? description.toString() : "");
     apps.add(app);
  }

  return apps;

}

感谢任何帮助!

Answer 1

使用Comparator对数据进行排序...

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

                @Override
                public int compare(App lhs, App rhs) {
                         //here getTitle() method return app name...
                    return lhs.getTitle().compareTo(rhs.getTitle());

                }
            });