如何在Android上使用timeLeft进行简历countdowntimer？

Question

timeLeft正在播放音乐文件，但如何使用onResume？ 所以我可以暂停活动，然后用左定时器继续。

这里是我的代码：

public void countdownTimer() { 

    final TextView mTextField = (TextView)findViewById(R.id.timer); 
    Count = new CountDownTimer(TIMER, 1000) { 
     public void onTick(long millisUntilFinished) { 

      mTextField.setText("" +(millisUntilFinished/60000)); 
      long timeLeft = millisUntilFinished/1000; 
      if(timeLeft <= 4 && timeLeft >=2 && tgbutton.isChecked()) 
      { 
       mSoundPool.play(sixthMusicFile, 1f, 1f, 1, 0, 1f); 
      } 
      if(timeLeft <= 1 && tgbutton.isChecked()) 
      { 
       mSoundPool.play(seventhMusicFile, 1f, 1f, 1, 0, 1f); 
       vibrate(); 
      } 

     } 
     public void onFinish() { 
      Count.setText("done!"); 
     } 
     }.start(); 
} 

编辑： 最后，我得到了一些答案。工作代码在这里： Android CountDown Timer with Pause, Resume and Cancel button。非常感谢以前帮助我的每个人。

Answer 1

试试这个活动：

public class MyActivity extends AppCompatActivity { 

        long TIMER = 1000000; 
        long timeLeft = 0; 
        private CountDownTimer Count; 
        SharedPreferences sharedPreferences; 

        @Override 
        protected void onCreate(@Nullable Bundle savedInstanceState) { 
         super.onCreate(savedInstanceState); 
         sharedPreferences = getSharedPreferences("App_shared_preferenced", Context.MODE_PRIVATE); 

        } 

        @Override 
        protected void onResume() { 
         super.onResume(); 
         timeLeft= sharedPreferences.getLong("leftTime",0); 
         if(timeLeft>0) 
         countdownTimer(timeLeft); 
         else countdownTimer(TIMER); 
        } 

        @Override 
        protected void onPause() { 
         super.onPause(); 
         sharedPreferences.edit().putLong("leftTime",timeLeft).commit(); 
         if(Count != null){                 
          Count.cancel(); 
         } 
        } 

        public void countdownTimer(long t) { 
          if(Count != null) Count.cancel(); 
         final TextView mTextField = null;// Your text view 
         Count = new CountDownTimer(t, 1000) { 
          public void onTick(long millisUntilFinished) { 

           mTextField.setText("" + (millisUntilFinished/60000)); 
           timeLeft = millisUntilFinished/1000; 
           if (timeLeft <= 4 && timeLeft >= 2 && tgbutton.isChecked()) { 
            mSoundPool.play(sixthMusicFile, 1f, 1f, 1, 0, 1f); 
           } 
           if (timeLeft <= 1 && tgbutton.isChecked()) { 
            mSoundPool.play(seventhMusicFile, 1f, 1f, 1, 0, 1f); 
            vibrate(); 
           } 
          } 

          public void onFinish() { 
           Count.setText("done!"); 
           timeLeft = 0; 
          } 
         }.start(); 
        } 
       }