如何创建全局警报对话框

Question

I want to make a "global" alert dialog for some of my activities. What i mean is that i created a class that extends Activity also created a function for the alert dialog that takes two parameters (message and title).

public class MyDialogAlert extends Activity {

public void createDialog(String title, String message)
{
    new AlertDialog.Builder(this)
    .setTitle(title)
    .setMessage(message)
    .setPositiveButton("yes", new OnClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int which) {
            // TODO Auto-generated method stub
            //(e.g) open another activity
        }
    })
    .setNegativeButton("no", new OnClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int which) {
            // TODO Auto-generated method stub
            //some stuff ..
        }
    })
    .show();
}

}

How can i call this function in different activities and change it`s negative and positive buttons to do other operations than those defined initially in the above class?

Thanks for the help :)

Answer 1

You can create sperate class that have static method for showing dialog on any activity

public class DialogCaller {

public static void showDialog(Context context,String title,String message, 
        DialogInterface.OnClickListener onClickListener) {

    AlertDialog.Builder dialog = new AlertDialog.Builder(context);
    dialog.setTitle(title);
    dialog.setMessage(message);
    dialog.setPositiveButton("Ok",onClickListener);
    dialog.setNegativeButton("Cancel",null);
    dialog.show();
}
}

And calling the method will be like this

   DialogCaller.showDialog(this,"title","message",new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {

        }
    });

Answer 2

According to FinalDark's working answer and Faisal Qayyum question, i hope it helps someone on how to dismiss the dialog and adding negative button listener

In the calling method, add switch case:

DialogCaller.showDialog(this,"title","message",new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
           switch (option) {
             case DialogInterface.BUTTON_POSITIVE:
                  // Add your code if it positive button
                  break;

             case DialogInterface.BUTTON_NEGATIVE:
                  // Add your code if it negative button
                  break;
          }
        }
    });

And if you want to add listener when the negative button clicked, just change null to the listener:

dialog.setNegativeButton("Cancel",onClickListener);