#import <UIKit/UIKit.h>
@interface ViewController : UITableViewController{ NSMutableArray *timeArray; UIRefreshControl *refresh; }@property (strong,nonatomic)NSMutableArray *timeArray;@property (strong,nonatomic)UIRefreshControl *refresh;@property (strong, nonatomic) IBOutlet UITableView *tableview;@end
#import "ViewController.h"
#import "MyTableViewCell.h"#import "MyTableViewController.h"@interface ViewController (){ NSMutableArray *_imagearray;}@end@implementation ViewController@synthesize timeArray;@synthesize refresh;- (void)viewDidLoad { [super viewDidLoad]; self.timeArray = [[NSMutableArray alloc]init]; [self setbeginRefreshing]; }-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{ return 1;}//UIRefreshControl目前只能用于UITableViewController,如果用在其他ViewController中,运行时会得到如下错误提示:(即UIRefreshControl只能被//UITableViewController管理)
//开始设置刷新;
- (void)setbeginRefreshing{ refresh = [[UIRefreshControl alloc]init];//刷新图形颜色;
refresh.tintColor = [UIColor redColor];//刷新标题;
refresh.attributedTitle = [[NSAttributedString alloc] initWithString:@"下拉刷新"];//当用户进行下拉刷新操作时,UIRefreshControl 会触发一个UIControlEventValueChanged事件,通过监听这个事件,我们就可以进行类似数据请求的操作了
[refresh addTarget: self action:@selector(refreshTableviewAction:) forControlEvents:UIControlEventValueChanged]; self.refreshControl =refresh;}//刷新动作
-(void)refreshTableviewAction:(UIRefreshControl *)refreshs{ if (refreshs.refreshing) { refreshs.attributedTitle = [[NSAttributedString alloc]initWithString:@"正在刷新"]; [self performSelector:@selector(refershData) withObject:nil afterDelay:2]; }}//刷新数据;
-(void)refershData{ NSString *syseTime = nil; NSDateFormatter *formatter = [[NSDateFormatter alloc]init];//创建时间格式;
[formatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"]; syseTime = [formatter stringFromDate:[NSDate date]]; NSString *lastUpdated = [NSString stringWithFormat:@"上一次更新时间为 %@", [formatter stringFromDate:[NSDate date]]]; self.refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:lastUpdated] ; [self.timeArray addObject:syseTime];//停止刷新,与starRefreshing配对使用;
[self.refreshControl endRefreshing];//重载数据;
[self.tableview reloadData];}- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{return self.timeArray.count;
}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ static NSString *CellIdentifier = @"Cell";UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] ;
}
cell.textLabel.text = [self.timeArray objectAtIndex:indexPath.row];
return cell;}