android – 在ListActivity中的getLoaderManager

我希望在ListActivity中实现一个Loader,但该活动不能识别getLoaderManager.

@Override
     public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);


    dbHelper =  new DBHelper(this,dbnAME,FindPackageName(),TABLE_NAME);

    sql = dbHelper.getReadableDataBase();
    //Log.d("Gaurav","Database Open");
    String[] from = new String[]{"word","_id","MyList"};
    int[] to = new int[]{R.id.listrow };

    simpleCursorLoader = new SimpleCursorLoader(this,TABLE_NAME,from,null,sql);



    //query result will be whole database
    //cursor = sql.query(TABLE_NAME,null);
    //startManagingCursor(cursor); //this method is deprecated
    //Log.d(TAG,"Cursor Set");



    completerOrMylistadapter = new CompleteOrMylistadapter(this,R.layout.completeormylist_adapter,cursor,to,dbHelper); 
    setlistadapter(completerOrMylistadapter);  

    // Prepare the loader.  Either re-connect with an existing one,// or start a new one.
    LoaderManager lm = getLoaderManager();
    //if (lm.getLoader(0) != null) {
    //    lm.initLoader(0,this);
    //}
    //getLoaderManager().initLoader(0,this);
}

解决方法

如果你的应用程序只能运行在11级或更高版本,请适当地设置你的构建目标,并且该方法将可用.

但是,如果您使用Android兼容性库在API 11级之前支持加载程序,则无法使用ListActivity.你必须继承FragmentActivity.使用一个ListFragment,或者只是你自己管理的一个简单的ListView.

原文地址：https://www.jb51.cc/android/312091.html