android - Handler.postDelayed(...) 不会延迟 Runnable

Question

我自己实现了一个 OnCompletionListener，如下所示:

public class SongEndCompletionListener  implements OnCompletionListener{

    String nextView;
    Context actualActivity;
    int stopTime;

    public SongEndCompletionListener(Context activity, String nextView, int time) {
        this.nextView = nextView;
        actualActivity = activity;
    }
    @Override
    public void onCompletion(MediaPlayer arg0) {


            Handler handler = new Handler(); 
            handler.postDelayed(new Runnable() { 
                 public void run() { 
                        try {
                     Intent stopplay;
                     stopplay = new Intent(actualActivity,Class.forName(nextView));
                     actualActivity.startActivity(stopplay);    
                 } catch (ClassNotFoundException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                    } 
                 } 
            }, stopTime); 


    }
}

我想让它暂停 stopTime 秒，但它实际上做的是音频文件一结束就跳转到下一个 View 。 您能否指出我错在哪里或我如何以不同方式延迟切换到另一个 Activity？

感谢每一个提示!

Answer 1

我知道为什么你的 Handler 没有延迟发布。

It is because your stopTime is 0.

需要为“stopTime”设置一个值，否则为0。 例如延迟 Runnable 一秒钟:

stopTime = 1000; // milliseconds

或者使用你的构造函数:

public SongEndCompletionListener(Context activity, String nextView, int time) {
    this.nextView = nextView;
    actualActivity = activity;
    this.stopTime = time; // you forgot this
}