java - LoaderManager 不接受 'this'

Question

好吧，我投降。我想不通。

我正在学习 Udacity 的 Android 基础类(class)，需要弄清楚如何使用加载程序加载数据。但是，当我使用以下行时，“this”以红色突出显示并显示以下错误:

Wrong 3rd argument type. Found 'com.example.carl.latestnews.MainActivity', required: 'android.app.LoaderManager.LoaderCallbacks<java.lang.Object>

我用谷歌搜索、堆叠并尝试了我找到的建议。我已经尝试创建一个实现回调的内部类。我碰壁了，我坐在这里挠头试图弄清楚我错过了什么!

谁能告诉我我做错了什么？

提前致谢!

package com.example.carl.latestnews;


 import android.content.Context; 
 import android.os.Bundle; 
 import android.support.v4.app.LoaderManager; 
 import android.support.v4.content.AsyncTaskLoader; 
 import android.support.v4.content.Loader; 
 import android.support.v7.app.AppCompatActivity; 
 import android.view.View; 
 import android.widget.ListView; 
 import android.widget.TextView;
 import java.util.ArrayList;

 public class MainActivity extends AppCompatActivity implements LoaderManager.LoaderCallbacks<ArrayList<ArticleObject>> {

     // ArticleObject is a custom object which contains a headline, date, category etc of a news article

     // URL for Guardian API including API Key
     final static String GUARDIAN_API_URL = "https://content.guardianapis.com/search?";

     // API Key
     final static String GUARDIAN_API_KEY = "test";

     // ID for LoaderManager
     final static int LOADER_MANAGER_ID = 0;


     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);

         // Get or initialize loader manager
         getLoaderManager().initLoader(LOADER_MANAGER_ID, null, this);

     }

     @Override
     public Loader<ArrayList<ArticleObject>> onCreateLoader(int id, Bundle args) {
         return new dataLoader(); // dataLoader() removed for easy reading
     }

     @Override
     public void onLoadFinished(Loader<ArrayList<ArticleObject>> loader, ArrayList<ArticleObject> data) {
         / UI Update Code
     }

     @Override
     public void onLoaderReset(Loader<ArrayList<ArticleObject>> loader) {
         // Reset Code
     }




 }

Answer 1

更改: getLoaderManager() 到 getSupportLoaderManager();
像这样:
getLoaderManager().initLoader(ID_FAVORITE_METAINFO_LOADER, args, this);
给
getSupportLoaderManager().initLoader(ID_FAVORITE_METAINFO_LOADER, args, this);