取消AlertDialog在活動的onPause方法在Android的

Question

以下是我的AlertDialog的代碼，

AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext); 
alertDialog.setTitle("GPS settings"); 
alertDialog.setMessage("GPS is not enabled. Do you want to go to settings menu?"); 
alertDialog.setPositiveButton("Settings", new DialogInterface.OnClickListener() { 
     public void onClick(DialogInterface dialog,int which) { 
     Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); 
     mContext.startActivity(intent); 
     } 
}); 

alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { 
     public void onClick(DialogInterface dialog, int which) { 
     dialog.cancel(); 
     } 
    }); 
alertDialog.show(); 

@Override 
protected void onPause() { 
    super.onPause(); 
// I want dialog to be dismissed here 

} 

其工作正常，但我想要的是關閉該對話框中的活動的onPause方法，
我如何能實現它呢？

Answer 1

使用這

alertDialogforGPS.dismiss(); 

編輯：

AlertDialog.Builder builder; 

builder = new AlertDialog.Builder(WelcomeActivity.this).setTitle("Title") 
.setMessage("Message") 
.setPositiveButton("YES", new DialogInterface.OnClickListener() { 
    public void onClick(DialogInterface dialog,int which) { 
     //your code 
    } 
}) 
.setNegativeButton("NO", new DialogInterface.OnClickListener() { 
    public void onClick(DialogInterface dialog, int which) { 
     dialog.cancel(); 
    } 
}); 
AlertDialog dialog = builder.create(); 
dialog.show(); 

而且在

dialog.dismiss(); 

Answer 2

試試這個..

聲明全局變量..

AlertDialog.Builder alertDialog; 

定義和訪問它時，你需要它。

alertDialog = new AlertDialog.Builder(mContext); 
alertDialog.setTitle("GPS settings"); 
alertDialog.setMessage("GPS is not enabled. Do you want to go to settings menu?"); 
alertDialog.setPositiveButton("Settings", new DialogInterface.OnClickListener() { 
     public void onClick(DialogInterface dialog,int which) { 
     Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); 
     dialog.dismiss(); // NOTE : dismiss dialog before moving to other activity.. it will prevent causing exception... 
     mContext.startActivity(intent); 
     } 
}); 

alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { 
     public void onClick(DialogInterface dialog, int which) { 
     dialog.dismiss(); 
     } 
    }); 

的其他方法來訪問變量..

@Override 
protected void onPause(){ 
    //checking for null variable 
    if(alertDialog != null) 
     alertDialog.dismiss(); 
    } 
} 

Answer 3

首先，你必須使你的AlertDialog.Builder alertDialog類的成員。像：

private AlertDialog.Builder mAlertDialog; 

然後，在這裏您定義警告對話框的時候，你用這個成員：

mAlertDialog = new AlertDialog.Builder(mContext); 
mAlertDialog.setTitle("GPS settings"); 
mAlertDialog.setMessage("GPS is not enabled. Do you want to go to settings menu?"); 
mAlertDialog.setPositiveButton("Settings", new DialogInterface.OnClickListener() { 
    public void onClick(DialogInterface dialog,int which) { 
     Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); 
     mContext.startActivity(intent); 
    } 
}); 

mAlertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { 
    public void onClick(DialogInterface dialog, int which) { 
     dialog.cancel(); 
    } 
}); 
mAlertDialog.show(); 

然後在onPause()方法，您可以關閉該對話框。

@Override 
protected void onPause() { 
    if (mAlertDialog != null) { 
     mAlertDialog.dismiss(); 
    } 
    super.onPause(); 
}