Fragment的setUserVisibleHint方法实现懒加载

/*
* Date: 14-7-17
* Project: Access-Control-V2
*/
package cn.irains.access_control_v2.common;
import android.support.v4.app.Fragment;
/**
* Author: msdx (645079761@qq.com)
* Time: 14-7-17 下午5:46
*/
public abstract class LazyFragment extends Fragment {
protected boolean isVisible;
/**
* 在这里实现Fragment数据的缓加载.
* @param isVisibleToUser
*/
@Override
public void setUserVisibleHint(boolean isVisibleToUser) {
super.setUserVisibleHint(isVisibleToUser);
if(getUserVisibleHint()) {
isVisible = true;
onVisible();
} else {
isVisible = false;
onInvisible();
}
}
protected void onVisible(){
lazyLoad();
}
protected abstract void lazyLoad();
protected void onInvisible(){}
}