如何保存一个按钮的点击次数？

Question

基本上，用户安装应用程序，第一次进入，并单击按钮[例如] 37次 - >现在这个数字必须保存为一个新的记录，因为37大于0.第二次用户点击和他使[例如] 88次点击。现在我想要保存88并通过将它放入PopupDialog中使其可以随时查看。我从哪说起呢？

这是我的代码：

public class MainActivity extends ActionBarActivity { 

private TextView txtCount, textViewTimer; 
private Button btnCount; 
int count = 0; 
boolean[] timerProcessing = { false }; 
boolean[] timerStarts = { false }; 
private MyCount timer; 

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

    TextView digital= (TextView) findViewById(R.id.textView2); 
    txtCount = (TextView) findViewById(R.id.textView1); 
    txtCount.setText(String.valueOf(count)); 
    btnCount = (Button) findViewById(R.id.button1); 
    Button btnRestart = (Button) findViewById(R.id.button2); 
    Button btnRecord = (Button)findViewById(R.id.button_record); 
    textViewTimer = (TextView) findViewById(R.id.textView2); 

    timer = new MyCount(10000, 1); 

    btnCount.setOnClickListener(new View.OnClickListener() { 
     public void onClick(View arg0) { 
      // start timer once when button first click 
      if (!timerStarts[0]) { 
       timer.start(); 
       timerStarts[0] = true; 
       timerProcessing[0] = true; 
      } 

      if (timerProcessing[0]) { 
       count++; 
       txtCount.setText(String.valueOf(count)); 
      } 
     } 
    }); 
    btnRestart.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      timerStarts[0] = false; 
      timerProcessing[0] = true; 
      count = 0; 
      txtCount.setText(String.valueOf(count)); 
      timer.cancel(); 
      textViewTimer.setText("10:000"); 

      if (btnCount.isPressed()) { 
       timer.start(); 

      } 

     } 

    }); 
    btnRestart.setOnTouchListener(new View.OnTouchListener() { 

     @Override 
     public boolean onTouch(View v, MotionEvent event) { 
      // TODO Auto-generated method stub 
      Vibrator vb = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE); 
      vb.vibrate(1); 
      return false; 
     } 
    }); 

} 

public class MyCount extends CountDownTimer { 
    public MyCount(long millisInFuture, long countDownInterval) { 
     super(millisInFuture, countDownInterval); 
    } 

    @Override 
    public void onFinish() { 
     textViewTimer.setText("0:000"); 
     timerProcessing[0] = false; 

    } 

    @Override 
    public void onTick(long millisUntilFinished) { 
     textViewTimer.setText("" + millisUntilFinished/1000 + ":" 
       + millisUntilFinished % 1000); 

    } 

} 

我不知道如何做到这一点，你可以帮我吗？

Answer 1

看起来您使用类实例变量count来保存您感兴趣的计数。 由于您的活动已处置并重新创建，因此您需要将此变量保存在onSaveInstanceState生命周期事件处理函数中并将其恢复到onCreate中。这将是这个样子：

@Override 
public void onSaveInstanceState(Bundle savedInstanceState) { 
    // Save the current game state 
    savedInstanceState.putInt("SavedCount", count); 

    //Cll the superclass 
    super.onSaveInstanceState(savedInstanceState); 
} 

恢复该变量在onCreate方法如下：

@Override 
    public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); // Always call the superclass first 
    // Check whether we're recreating a previously destroyed instance 
    if (savedInstanceState != null) { 
    // Restore value of members from saved state 
     count = savedInstanceState.getInt("SavedCount"); 
    } else { 
     count = 0;// Probably initialize members with default values for a new instance 
    } 
    //...rest of oncreate method 
    }