//时间比较 NSDate * temp = [[NSDate alloc]init]; NSDate * last = [[NSDate alloc]init]; NSComparisonResult a = [ temp compare:last ]; if (NSOrderedAscending == a) {//如果temp比last早 NSLog(@"zao"); } else { NSLog(@"b zao"); } //input常用的连个属性 [input setBorderStyle:UITextBorderStyleRoundedRect]; [input setContentVerticalAlignment:UIControlContentVerticalAlignmentCenter]; //弹出浏览器 [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://www.google.com/"]]; //复制到粘贴板 UIPasteboard *pasteboard=[UIPasteboard generalPasteboard]; pasteboard.string =@"sssss"; //定时任务: [self performSelector:@selector(performDismiss) withObject:nil afterDelay:3.0f]; //设置uibutton事件,通过tag传递参数 [cell.deleteView setTag:row]; //设置tag位行号,以达到传递参数的目的 [cell.deleteView addTarget:self action:@selector(onDelete:) forControlEvents:UIControlEventTouchUpInside]; //使用 -(void)onDelete:(id)sender{ UIButton * button = (UIButton*)sender; int row = button.tag; ... } //设置导航条右上角按钮 self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]... //设置界面事件方法: -(IBAction)buttonClick:(id)sender; //时间计算 NSDate * bDate = [[NSDate alloc]init];//开始时间,现在 NSTimeInterval minute30 = 30*60; //结束时间 设置在开始时间30分钟后 NSDate * edate = [order.receiveTime dateByAddingTimeInterval:minute30]; //cell最常用3个方法 [cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator];//右边的箭头 cell.textLabel.text = [self str:@"decode"];//文本 cell.imageView.image = [UIImage imageNamed:@"icon_decode.png"];//左边的图标 //状态栏中加载中的图标 [UIApplication sharedApplication].networkActivityIndicatorVisible = NO; //关闭状态栏,加载中的提示图标 //使每次点击UITabBarController的tab时返回到第一页 self.tabBarController.delegate = self; //使每次点击tab都回到跟目录 - (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController { if ([viewController isKindOfClass:[UINavigationController class]]) { [(UINavigationController *)viewController popToRootViewControllerAnimated:YES]; } } //设置图片按比例缩放 [imageView setContentMode:UIViewContentModeScaleAspectFit]; //设置UIImageView边框 需要在.pch文件中添加#import <QuartzCore/CALayer.h> CALayer * layer = [imageView layer]; [layer setMasksToBounds:YES]; //是否设置边框以及是否可见 [layer setCornerRadius:10.0]; //设置边框圆角的弧度 [layer setBorderWidth:1];//设置边框线的宽 [layer setBorderColor:[[UIColor blackColor] CGColor]]; //设置边框线的颜色 //日期时间格式化 NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateFormat:@"yyyy-MM-dd"]; lblBirth.text = [dateFormatter stringFromDate:student.birth];
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