上拉刷新，下拉加载

来源：互联网发布：linux永久网关配置命令编辑：程序博客网时间：2024/05/17 09:33

1.上来加载，下拉刷新数据；
a。导入Refresh文件夹
b。导入头文件：
#import "UIScrollView+MJRefresh.h"
c。添加调用方法
#pragma mark-
#pragma mark-上拉加载，下拉刷新
-(void)setupRefresh{
// 1.下拉刷新(进入刷新状态就会调用self的headerRereshing)
   [_table addHeaderWithTarget:self action:@selector(headerRereshing)];
//#warning 自动刷新(一进入程序就下拉刷新)
[self.table headerBeginRefreshing];

// // 2.上拉加载更多(进入刷新状态就会调用self的footerRereshing)
// [self.table addFooterWithTarget:self action:@selector(footerRereshing)];
}
#pragma mark 开始进入刷新状态
- (void)headerRereshing
{   dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.0 NSEC_PER_SEC)),dispatch_get_main_queue(), ^{
   [self.table reloadData];
    // (最好在刷新表格后调用)调用endRefreshing可以结束刷新状态
[self.table headerEndRefreshing];
});
}
- (void)footerRereshing
{ // 2.2秒后刷新表格UI
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.0 NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
//刷新表格
[self.table reloadData];
// (最好在刷新表格后调用)调用endRefreshing可以结束刷新状态
[self.table footerEndRefreshing];
});
}
d。在viewdidload里调用方法
[self setupRefresh];

2。图片缓存
a.导入文件夹SDWebimage；
b，引头文件：
#import "UIImageView+WebCache.h"
c。在要用到图片时可以这样调用：
  NSURL url =[NSURL URLWithString:[dic objectForKey:@"pictureUrl"]];
[cell.image setImageWithURL:url];

3.抽屉效果及按钮控制
a。导入文件夹ICSDrawerController。
b。引入头文件：
//#import "ICSDrawerController.h"
//#import "ICSDropShadowView.h"
c。在AppDelegate.m中

LeftViewController left = [[LeftViewController alloc] init];
UINavigationController nav5 = [[UINavigationController alloc] initWithRootViewController:left];
RightViewController right = [[RightViewController alloc] init];
// UINavigationController nav6 = [[UINavigationController alloc] initWithRootViewController:right];
ICSDrawerController drawer = [[ICSDrawerController alloc] initWithLeftViewController:nav5 centerViewController:bar];
right.drawer = drawer;
[self.window setRootViewController:drawer];
[drawer release];
[left release];
[right release];
d.在RightViewController中应该写
self.openDrawerButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 40, 40)];
[ self.openDrawerButton setTitle:@"点我" forState:UIControlStateNormal];

   //[self.openDrawerButton setBackgroundImage:[UIImage imageNamed:@"leftaaaa"] forState:UIControlStateNormal];
[ self.openDrawerButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView: self.openDrawerButton];
[ self.openDrawerButton addTarget:self action:@selector(openDrawer:) forControlEvents:UIControlEventTouchUpInside];
[ self.openDrawerButton release];
- (void)openDrawer:(id)sender
{
if ([str isEqualToString:@"0"]) {
[self.drawer open];

}else{
[self.drawer close];
   }
}

0 0