对android 回调机制的总结

//1.声明listenenrprivate RefreshListener listener;//2.接口，里面一个方法public interface RefreshListener{        public void onRefresh(XListview view);    }//3.set方法public void setRefreshListener(RefreshListener listener){        this.listener=listener;    }//4.在某个方法里写listener调用onRefreshlistener.onRefresh(XListview.this);//5.在Activity里接口RefreshListener，重写onRefresh();public void onRefresh(XListview view) {        }