call method from fragment to Activity

Question

hello i have activity and i call many fragment based on my application business i need to call method from fragment in activity i searched in the internet but i cannot find the

Answer 1

Call method of Activity from fragment

 ((YourActivityName)getActivity()).addUserLineInfoFragment();

Call method of fragment from Activity

1. Create Interface

 public interface OnButtonListener
    {
        void onButtonClick();
    }

2. Init in Activity

 protected OnButtonListener onActionButtonListener;

    public void setOnButtonListener(OnButtonListener actionButtonListener)
    {
        this.onActionButtonListener = actionButtonListener;
    }

3. In Activity, click event when this action need to perform

this.onActionButtonListener.onButtonClick();

4. Implement listener(OnButtonListener) in Fragment

 @Override
    public void onButtonClick(){}

5. In fragment onCreateView

((YourActivityName) getActivity()).setOnButtonListener(this);