超级活动类对话框侦听器在子类活动中的处理

Question

Hi I have created generic Activity class which have a dialog box(with DatePicker) in it. Extending it allover the application. I would like to handle the listeners of the date selector in sub class activity. I tried with implementing a interface in the super class and override the same in sub class. and i was struck at overriding the same in sub class.

Now my question is.. .Is this really a bad idea...? Any alternate for this approach.

Answer 1

Got the solution to my question All you have to do is create a abstract method is super class as

public abstract class SuperActivity{

onCreateDialog(){
//date picker with date select listeners and add  get the selected date;
// call onDateChanged() in the date selected listener in the super class
}
public abstract onDateChanged(); 
}

Implement the onDateChanged() method in SubClass Then whenever you changed the date in super class.. sub class onDateChanged() method will be called.

class SubCActivity extends SuperActivity(){

public void onDateChanged(){
// handling
}
}