andriod fragment调用Activity函数方法

 1 package com.xxxx.activity; 4 
 5 public interface FragmentCallBack { 7 
 8     public MainActivity getMainActivity();
 9     
10 }

1     @Override
2     public MainActivity getMainActivity() {
3         return this;
4     }

 1 //声明：注意要引用
 2 private FragmentCallBack mFragmentCallBack;
 3 
 4 
 5 //创建：
 6 @Override
 7 public void onAttach(Activity activity) {
 8 super.onAttach(activity);
 9 try {
10 mFragmentCallBack = (FragmentCallBack) activity;
11 } catch (ClassCastException e) {
12 throw new ClassCastException(activity.toString()
13 + " must implement OnHeadlineSelectedListener");
14 }
15 }
16 
17 
18 //调用：
19 mFragmentCallBack.getMainActivity().showmsg();