Android的TimePickerDialog選定的時間沒有通過實際的倒數計時器

Question

我一直在努力獲取一個timepicker對話框來設置我的倒數計時器。我嘗試了很多方法，結果很多，都沒有成功。我決定嘗試一些我將在下面提到的基本代碼。

我無法獲得選定的時間（我在下面的代碼中將其稱爲selectedStartTime）作爲startTime傳入實際的倒數計時器。當我使用預設的startTime = 10000（或任何數字）時，我只能使計時器正常工作。我不想讓startTime成爲一個數字。我需要它來自時間選擇器框中的OnTimeSetListener。

我將永遠感謝任何能告訴我如何更改代碼的人，以便在對話框中實際使用定時器中的選定時間。

完整的XML代碼：activity_simple_timer_test.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
android:orientation="vertical"> 

<Button 
    android:id="@+id/button" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="Start" /> 

<TableLayout 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:layout_gravity="center" 
    android:padding="10dip"> 

    <TableRow> 

     <TextView 
      android:id="@+id/timer" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:paddingRight="10dip" 
      android:text="Time: " /> 

     <TextView 
      android:id="@+id/timeElapsed" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:paddingRight="10dip" 
      android:text="Time elapsed: " /> 
    </TableRow> 
</TableLayout> 
</LinearLayout> 

完整的Java代碼：SimpleTimerTest.java

package com.YOURPACKAGE INFO; 

import android.app.Activity; 
import android.app.TimePickerDialog; 
import android.content.DialogInterface; 
import android.os.Bundle; 
import android.os.CountDownTimer; 
import android.view.Gravity; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.TextView; 
import android.widget.TimePicker; 
import android.widget.Toast; 

public class SimpleTimerTest extends Activity implements OnClickListener { 

private MalibuCountDownTimer countDownTimer; 
private long timeElapsed; 
private boolean timerHasStarted = false; 
private Button startB; 
private TextView text; 
private TextView timeElapsedView; 
int selectedStartTime; 
// don't want to use a predefined startTime 
private final long startTime = 10000; 
private final long interval = 1000; 

@Override 
public void onCreate(Bundle savedInstanceState) 
{ 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_simple_timer_test); 
    startB = (Button) this.findViewById(R.id.button); 
    startB.setOnClickListener(this); 

    text = (TextView) this.findViewById(R.id.timer); 
    timeElapsedView = (TextView) this.findViewById(R.id.timeElapsed); 
    countDownTimer = new MalibuCountDownTimer(startTime, interval); 
    text.setText(text.getText() + String.valueOf(startTime)); 
} 

TimePickerDialog.OnTimeSetListener onTimeSetListener = new TimePickerDialog.OnTimeSetListener() { 
    @Override 
    public void onTimeSet(TimePicker view, int hourOfDay, int minute) { 
     selectedStartTime = ((hourOfDay*3600000)+(minute*60000)); 
     // I can't get this variable to pass through into the countdown timer 
    } 
}; 

@Override 
public void onClick(View v) { 

    TimePickerDialog d = new TimePickerDialog(SimpleTimerTest.this, onTimeSetListener, 1, 0, true); 
    d.setTitle("Pick Sleep Duration hour:min"); 
    d.setCancelable(true); 
    d.setButton(DialogInterface.BUTTON_POSITIVE, "Start", new DialogInterface.OnClickListener() { 
     public void onClick(DialogInterface dialog, int which) { 
      if (which == DialogInterface.BUTTON_POSITIVE) { 

       if (!timerHasStarted) { 
        countDownTimer.start(); 
        timerHasStarted = true; 
        startB.setText("Stop"); 
       } else { 
        countDownTimer.cancel(); 
        timerHasStarted = false; 
        startB.setText("Timer was already running"); 
       } 
      } 
     } 
    }); 
    d.setButton(DialogInterface.BUTTON_NEGATIVE, "Cancel", new DialogInterface.OnClickListener() { 
     public void onClick(DialogInterface dialog, int which) { 
      if (which == DialogInterface.BUTTON_NEGATIVE) { 
       countDownTimer.cancel(); 
       timerHasStarted = false; 
       startB.setText("Restart"); 
      } 
     } 
    }); 
    d.show(); 
} 

public class MalibuCountDownTimer extends CountDownTimer { 
    public MalibuCountDownTimer(long startTime, long interval) 
    { 
     super(startTime, interval); 
    } 
    @Override 
    public void onFinish()  { 
     text.setText("Time's up!"); 
     timeElapsedView.setText("Time Elapsed: " + String.valueOf(startTime)); 
     Toast toast = Toast.makeText(getApplicationContext(), "finished", Toast.LENGTH_LONG); 
     toast.setGravity(Gravity.CENTER, 0, 0); 
     toast.show(); 
    } 
    @Override 
    public void onTick(long millisUntilFinished)  { 
     text.setText("Time remain:" + millisUntilFinished); 
     timeElapsed = startTime - millisUntilFinished; 
     timeElapsedView.setText("Time Elapsed: " + String.valueOf(timeElapsed)); 
    } 
} 
} 

Answer 1

我不能完全確定你想實現什麼，只是創建您的方法onTimeSet中您的MalibuCountDownTimer的實例，此方法將僅在用戶選擇時間時調用。