关于Fragment嵌套出现的问题

错误提示：

java.lang.IllegalStateException: No activity
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1075)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1070)
at android.support.v4.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:1861)
at android.support.v4.app.Fragment.performActivityCreated(Fragment.java:1474)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:931)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088)

.......

解决方法：

解决方法重写onDetach()

 

[java] view plain copy

 @Override  

  public void onDetach() {  

　　super.onDetach(); try {  

            Field childFragmentManager = Fragment.class.getDeclaredField("mChildFragmentManager");  

            childFragmentManager.setAccessible(true);  

            childFragmentManager.set(this, null);  

        } catch (NoSuchFieldException e) {  throw new RuntimeException(e);  

        } catch (IllegalAccessException e) {  throw new RuntimeException(e);  

        }  

    }  

其中的Field 是

java.lang.reflect.Field