當我從時間選擇器中選擇時間時，開始倒數計時器android

Question

我想構建應用程序，從時間選擇器中選擇時間，然後選擇文本視圖中的時間，倒數計時器開始計時並具有小時，分鐘，和秒數值... 的代碼是： -

 public class MainActivity extends Activity implements OnClickListener{ 
    /** Private members of the class */ 
    private TextView displayTime; 
    private Button pickTime; 
    private Button buttonStartTime, buttonStopTime; 
    private TextView textViewShowTime; // will show the time 
    private CountDownTimer countDownTimer; // built in android class 
    private long totalTimeCountInMilliseconds; 
    private int pHour; 
    private int pMinute; 
    /** This integer will uniquely define the dialog to be used for displaying time picker.*/ 
    static final int TIME_DIALOG_ID = 0; 

    /** Callback received when the user "picks" a time in the dialog */ 
    private TimePickerDialog.OnTimeSetListener mTimeSetListener = 
     new TimePickerDialog.OnTimeSetListener() { 
      public void onTimeSet(TimePicker view, int hourOfDay, int minute) { 
       pHour =pHour+ hourOfDay; 
       pMinute = pMinute+minute; 
       updateDisplay(); 
       displayToast(); 
      } 
     }; 

    /** Updates the time in the TextView */ 
    private void updateDisplay() { 
     displayTime.setText(
      new StringBuilder() 
        .append(pad(pHour)).append(":") 
        .append(pad(pMinute))); 
tv.setText(
        new StringBuilder() 
        // Month is 0 based so add 1 
        .append(mDay).append("-") 
        .append(mMonth + 1).append("-") 

        .append(mYear).append(" ")); 
    } 

    /** Displays a notification when the time is updated */ 
    private void displayToast() { 
     Toast.makeText(this, new StringBuilder().append("Time choosen is ").append(displayTime.getText()), Toast.LENGTH_SHORT).show(); 

    } 

    /** Add padding to numbers less than ten */ 
    private static String pad(int c) { 
     if (c >= 10) 
      return String.valueOf(c); 
     else 
      return "0" + String.valueOf(c); 
    } 

    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     /** Capture our View elements */ 
     displayTime = (TextView) findViewById(R.id.timeDisplay); 
     pickTime = (Button) findViewById(R.id.pickTime); 

     buttonStartTime = (Button) findViewById(R.id.btnStartTime); 
     buttonStopTime = (Button) findViewById(R.id.btnStopTime); 
     displayTime = (TextView) findViewById(R.id.timeDisplay); 

     buttonStartTime.setOnClickListener(this); 
     buttonStopTime.setOnClickListener(this); 


     /** Listener for click event of the button */ 
     pickTime.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
       showDialog(TIME_DIALOG_ID); 
      } 
     }); 

     /** Get the current time */ 
     final Calendar cal = Calendar.getInstance(); 
     mYear = cal.get(Calendar.YEAR); 
     mMonth = cal.get(Calendar.MONTH); 
     mDay = cal.get(Calendar.DAY_OF_MONTH); 
     pHour = cal.get(Calendar.HOUR_OF_DAY); 
     pMinute = cal.get(Calendar.MINUTE); 

     /** Display the current time in the TextView */ 
     updateDisplay(); 
    } 

    @Override 
    public void onClick(View v) { 
     if (v.getId() == R.id.btnStartTime) { 
      // textViewShowTime.setTextAppearance(getApplicationContext(), 
       // R.style.normalText); 
      setTimer(); 
      buttonStopTime.setVisibility(View.VISIBLE); 
      buttonStartTime.setVisibility(View.GONE); 
      //edtTimerValue.setVisibility(View.GONE); 
      //edtTimerValue.setText(""); 
      startTimer(); 

     } else if (v.getId() == R.id.btnStopTime) { 
      countDownTimer.cancel(); 
      buttonStartTime.setVisibility(View.VISIBLE); 
      buttonStopTime.setVisibility(View.GONE); 

     } 
    } 

    private void setTimer() { 
     int times = 0; 
     if (!displayTime.getText().toString().equals("")) { 
      times = Integer.parseInt(displayTime.getText().toString()); 
      //time=timer; 
     } else 
      Toast.makeText(MainActivity.this, "Please Enter Minutes...", 
        Toast.LENGTH_LONG).show(); 

     totalTimeCountInMilliseconds = 60 * times * 1000; 

     //timeBlinkInMilliseconds = 30 * 1000; 
    } 


    private void startTimer() { 
     countDownTimer = new CountDownTimer(totalTimeCountInMilliseconds, 500) { 
      // 500 means, onTick function will be called at every 500 
      // milliseconds 

      @Override 
      public void onTick(long leftTimeInMilliseconds) { 
       long seconds = leftTimeInMilliseconds/1000; 



       displayTime.setText(String.format("%02d:%02d:%02d", seconds/3600, 
         (seconds % 3600)/60, (seconds % 60))); 
       // format the textview to show the easily readable format 

      } 

      @Override 
      public void onFinish() { 
       // this function will be called when the timecount is finished 
       displayTime.setText("Time up!"); 
       displayTime.setVisibility(View.VISIBLE); 
       buttonStartTime.setVisibility(View.VISIBLE); 
       buttonStopTime.setVisibility(View.GONE); 
       //edtTimerValue.setVisibility(View.VISIBLE); 
      } 

     }.start(); 

    } 

    /** Create a new dialog for time picker */ 

    @Override 
    protected Dialog onCreateDialog(int id) { 
     switch (id) { 
     case TIME_DIALOG_ID: 
      return new TimePickerDialog(this, 
        mTimeSetListener, pHour, pMinute, false); 
     } 
     return null; 
    } 
} 

它使無效INT錯誤：因爲在文本中的值是'43：56' ，所以我應該怎麼解決呢

Answer 1

你不」 t需要從displayTime獲得時間。您需要從pHour和pMinute字段獲取時間。 更改此：

times = Integer.parseInt(displayTime.getText().toString()); 

這樣：

times = pHour*60 + pMinutes;