使用MJRefresh自定义下拉刷新,上拉加载动画

- (void)prepare{
    [super prepare];
    self.stateLabel.hidden = NO;
    self.lastUpdatedTimeLabel.hidden = YES;
    
    [self setImages:@[[UIImage imageNamed:@"v2_pullRefresh1"]] forState:MJRefreshStateIdle];
    [self setImages:@[[UIImage imageNamed:@"v2_pullRefresh2"]] forState:MJRefreshStatePulling];
    [self setImages:@[[UIImage imageNamed:@"v2_pullRefresh1"],[UIImage imageNamed:@"v2_pullRefresh2"]] forState:MJRefreshStateRefreshing];

    [self setTitle:@"下拉刷新" forState:MJRefreshStateIdle];
    [self setTitle:@"松开刷新" forState:MJRefreshStatePulling];
    [self setTitle:@"正在刷新" forState:MJRefreshStateRefreshing];

}