完成活动Android（使用Theme.Dialog）？

Question

我在使用Theme.Dialog完成活动时遇到问题..需要双按后退按钮才能在返回上一个活动之前完成活动。一按后退按钮=隐藏激活（Theme.Dialog），然后再按返回上一个活动。

和此代码Acitivity（Theme.Dialog）

package com.tracking.bus.track;

import com.tracking.bus.R;

import org.holoeverywhere.app.Activity;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.content.Intent;
import org.holoeverywhere.app.Dialog; 

public class language extends Activity {
    private Ringtone r;

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

        Uri alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);

        if(alert == null){
            // alert is null, using backup
            alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

            // I can't see this ever being null (as always have a default notification)
            // but just incase
            if(alert == null) {  
                // alert backup is null, using 2nd backup
                alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_RINGTONE);                
            }
        }

        Dialog dialog = new Dialog(language.this); 
        dialog.setContentView(R.layout.dialog_notifikasi); 
        dialog.setTitle("Raygional"); 
        dialog.show();

         r = RingtoneManager.getRingtone(language.this, alert);
        r.play();

    }

    @Override
    public void onStop() {
       super.onStop();
       if(r.isPlaying())
       {
         r.stop();
       }

finish();
      }
}

那么，当隐藏/关闭活动时如何使用Theme.Dialog完成活动？对不起我的英文

Answer 1

如果我正确理解您的问题，您希望在用户第一次点击＆＃34;返回＆＃34;时，调用活动的finish（）方法，是吗？在您的活动中：

@Override
public boolean onKeyDown(int keyCode, KeyEvent event)  {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        this.finish();
    }

    return super.onKeyDown(keyCode, event);
}

Answer 2

添加OnDismissListener。

package com.tracking.bus.track;

import com.tracking.bus.R;

import org.holoeverywhere.app.Activity;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.content.Intent;
import org.holoeverywhere.app.Dialog; 

public class language extends Activity {
    private Ringtone r;
    private DialogInterface.OnDismissListener mOnDismiss; // Variable OnDismiss

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

        Uri alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);
        mOnDismiss = new DialogInterface.OnDismissListener(){ // initializing variable
            @Override
            public void onDismiss(DialogInterface dialog) {
                finish();
            }
        }
        if(alert == null){
            // alert is null, using backup
            alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

            // I can't see this ever being null (as always have a default notification)
            // but just incase
            if(alert == null) {  
                // alert backup is null, using 2nd backup
                alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_RINGTONE);                
            }

        }

        Dialog dialog = new Dialog(language.this); 
        dialog.setContentView(R.layout.dialog_notifikasi); 
        dialog.setTitle("Raygional"); 
        dialog.setOnDismissListener(mOnDismiss); // assign variable.
        dialog.show();

         r = RingtoneManager.getRingtone(language.this, alert);
        r.play();

    }

    @Override
    public void onStop() {
       super.onStop();
       if(r.isPlaying())
       {
         r.stop();
       }

finish();
      }
}