Question

我尝试在MainActivity之外展示广告。如果我在这个类中调用showAd它很好并且显示我的广告，但是当我通过实现的接口在我的游戏类中调用此函数时，我有一个错误：＆＃34;需要主线程＆＃34;

MMRequest request = new MMRequest(); ;  
    MMInterstitial interstitial;
  @Override
  public void onCreate(Bundle savedInstanceState) 
  {
        super.onCreate(savedInstanceState);   
        MMSDK.initialize(this);  
        interstitial = new MMInterstitial(this);               
        interstitial.setMMRequest(request);
        interstitial.setApid("xxxxxx");  

        AndroidApplicationConfiguration cfg = new AndroidApplicationConfiguration();    

        RelativeLayout layout = new RelativeLayout(this);

        View gameView = initializeForView(new JumpJackieJump(new RequestHandler(), this), cfg);
        layout.addView(gameView);           

        setContentView(layout);  }

@Override
public void showAd() 
{   
    interstitial.fetch();
    interstitial.setListener(new RequestListenerImpl() 
    {   
        @Override
        public void requestCompleted(MMAd mmAd) 
        {
            interstitial.display();             
        }           
});

Answer 1

这是因为主线程是 UI线程。（请记住，这仅适用于Android - 有关更多参考，请参阅this）。

根据Android文档，您应该avoid updating the UI outside the UI thread。

Additionally, the Andoid UI toolkit is not thread-safe. So, you must not manipulate your UI from a worker thread—you must do all manipulation to your user interface from the UI thread.

话虽这么说，你可以用this之类的东西做你正在寻找的东西。

在类外调用MainActivity函数

1 个答案: