EGOTableViewPullRefresh 是fork EGOTableViewPullRefresh开源类库进行的改进，添加了上提加载更多效果。同时也可以通过一个按钮的触发刷新事件，但是刷新的时候不能跳到top，为了动态展示，再刷新的时候按钮旋转，然后跳转回到顶部！如下如图
关于EGOTableViewPullRefresh可以参照http://blog.csdn.net/duxinfeng2010/article/details/9007311，翻译过的用法，在这个Demo基础上进行修改，点击Demo下载；
1、给工程添加一个导航栏，在application: didFinishLaunchingWithOptions:方法中
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- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
// Override point for customization after application launch.
// [[UINavigationBar appearance] setBackgroundImage:[UIImage p_w_picpathNamed:@"navbar.png"] forBarMetrics:UIBarMetricsDefault];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:self.viewController];
self.window.rootViewController = nav;
[self.window makeKeyAndVisible];
return YES;
}2、在ViewDidLoad方法中，修改背景图片，添加刷新按钮
- (void)viewDidLoad
{
[super viewDidLoad];
self.navigationController.navigationBar.tintColor = [UIColor colorWithPatternImage:[UIImage p_w_picpathNamed:@"navbar.png"]];
self.pullTableView.pullArrowImage = [UIImage p_w_picpathNamed:@"blackArrow"];
// self.pullTableView.pullBackgroundColor = [UIColor yellowColor];
self.pullTableView.pullTextColor = [UIColor blackColor];
CGRect rect = CGRectMake(0, 0, 44, 44);
UIButton *refreshBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
refreshBtn.frame = rect;
[refreshBtn setBackgroundImage:[UIImage p_w_picpathNamed:@"button_refresh"] forState:UIControlStateNormal];
[refreshBtn addTarget:self action:@selector(refresh:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *refreshItem = [[UIBarButtonItem alloc] initWithCustomView:refreshBtn];
self.navigationItem.leftBarButtonItem = refreshItem;
} |
3、添加刷新按钮事件，和按钮旋转方法
//按钮旋转
- (void)startAnimation:(UIButton *)button{
CABasicAnimation *rotate =
[CABasicAnimation animationWithKeyPath:@"transform.rotation"];
[rotate setByValue:[NSNumber numberWithFloat:M_PI*4]];
rotate.duration = 3.0;
rotate.timingFunction =
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
[button.layer addAnimation:rotate
forKey:@"myRotationAnimation"];
}-(void)refresh:(UIButton *)button
{
[self startAnimation:button];
// 判断一下table是否处于刷新状态，如果没有则执行本次刷新
if (!self.pullTableView.pullTableIsRefreshing) {
self.pullTableView.pullTableIsRefreshing = YES;
// 设置回到top时候table的位置
[self.pullTableView setContentOffset:CGPointMake(0, -60) animated:YES];
[self performSelector:@selector(refreshTable) withObject:nil afterDelay:3.0];
}
}×××地址:https://github.com/XFZLDXF/RefreshButtonDemo
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