为什么在活动中继承会导致活动功能不起作用

Question

I have 2 activity classes, one being abstract that offers a kind of framework to the other classes that will have similar behavior. So lets say activity ActA is parent offering the framework and activity ActB is the child.

I have the framework activity like the following:

public class ActA extends Activity{
    @Override
    protected void onCreate(Bundle b){
        super.onCreate(b);
        // do stuff for setting up framework
    }
}

Then I have a child activity like so:

public class ActB extends ActA{
    @Override
    public void onCreate(Bundle b){
        super.onCreate(b);
        // do other stuff
    }
}

The code commented like do other stuff is not actually called. What is the problem as to me it looks legit?

Answer 1

You can try it another way like

 public abstract class ActA extends Activity{
      @Override
      protected void onCreate(Bundle b){
          super.onCreate(b);
          // do stuff for setting up framework
         callForStuff();
      }


 protected abstract void callForStuff();

}

Then you need not call onCreate() method again.Only you have to do it like

 public class ActB extends ActA{

    @Override
    protected void callForStuff(){
      // abstract method
    }
}

Hope this will help you;