android - android多次调用runnable对象

Question

我试图多次调用我的函数，其中包含可运行对象。谁能告诉我我做错了什么？

        handler = new Handler();

        sButton.setOnClickListener(new View.OnClickListener() 
        {

            @Override
            public void onClick(View v) 
            {
                rounds = new Integer(et.getText().toString());
            //  handler.removeCallbacksAndMessages(null);
                for (int j = 0; j <= rounds; j ++)
                {
                    f();
                }
            }
        });
    }

    public void f()
    {
        r = new Runnable() 
        {
            @Override
            public void run() 
            {
                 mp = MediaPlayer.create(Box.this, R.drawable.sound1);
                 mp.setLooping(false);
                 mp.setVolume(1.0f, 1.0f);
                 mp.start();
                 handler.postDelayed(this, 3000);
            }
        };
        handler.postDelayed(r, 4000);
        mp.stop();

提前致谢

Answer 1

看看这个-

 Handler handler;
    sButton.setOnClickListener(new View.OnClickListener() 
            {

                @Override
                public void onClick(View v) 
                {
                    rounds = new Integer(et.getText().toString());
                    for (int j = 0; j <= rounds; j ++)
                    {
                        f();
                    }
                }
            });

    public void f()
    {
          r = new Runnable() 
            {
                @Override
                public void run() 
                {

                   handler = new Handler() {
                   public void handleMessage(Message msg) {
                   mp = MediaPlayer.create(Box.this, R.drawable.sound1);
                   mp.setLooping(false);
                   mp.setVolume(1.0f, 1.0f);
                   mp.start(); 
                   handler.sendEmptyMessageDelayed(1,3000);//3 sec
                   msg.what = 2;//removing first executed handler this is u missing.
                    };
                 };
                handler.sendEmptyMessageDelayed(1,4000);//4sec
                }
           }
    }