上拉刷新，下拉加載

1.上來加載，下拉刷新數據；

a。導入Refresh文件夾 

b。導入頭文件：

#import "UIScrollView+MJRefresh.h"

c。添加調用方法

#pragma mark-

#pragma mark-上拉加載，下拉刷新

-(void)setupRefresh{

    // 1.下拉刷新(進入刷新狀態就會調用self的headerRereshing)

   [_table addHeaderWithTarget:self action:@selector(headerRereshing)];

//#warning 自動刷新(一進入程序就下拉刷新)

    [self.table headerBeginRefreshing];

    

//    // 2.上拉加載更多(進入刷新狀態就會調用self的footerRereshing)

//    [self.table addFooterWithTarget:self action:@selector(footerRereshing)];

}

#pragma mark 開始進入刷新狀態

- (void)headerRereshing

{    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.0 *NSEC_PER_SEC)),dispatch_get_main_queue(), ^{

         [self.table reloadData];

           // (最好在刷新表格後調用)調用endRefreshing可以結束刷新狀態

        [self.table headerEndRefreshing];

    });

}

- (void)footerRereshing

{ // 2.2秒後刷新表格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];               

 // (最好在刷新表格後調用)調用endRefreshing可以結束刷新狀態

        [self.table footerEndRefreshing];

    });

}

d。在viewdidload裏調用方法

[self setupRefresh];

2。圖片緩存

a.導入文件夾SDWebimage；

b，引頭文件：

#import "UIImageView+WebCache.h"

c。在要用到圖片時可以這樣調用：

  NSURL *url =[NSURL URLWithString:[dic objectForKey:@"pictureUrl"]];

    [cell.image setImageWithURL:url];

3.抽屜效果及按鈕控制

a。導入文件夾ICSDrawerController。

b。引入頭文件：

//#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中應該寫

 self.openDrawerButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 40, 40)];

    [ self.openDrawerButton setTitle:@"點我" 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];

           }

}