UIAlertController

来源：互联网发布：带数据统计的二维码编辑：程序博客网时间：2024/05/29 10:15

UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"标题" message:@"2222" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];    [alertView show];

 //iOS8以后    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"标题" message:@"2222222" preferredStyle:UIAlertControllerStyleAlert];        //添加按钮    [alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil]];    [alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) {        NSLog(@"点击了确定");    }]];        //显示控制器    [self presentViewController:alert animated:YES completion:nil];

还可以换种样式：

UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"标题" message:@"2222222" preferredStyle:UIAlertControllerStyleActionSheet];        //添加按钮    [alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil]];    [alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) {        NSLog(@"点击了确定");    }]];        //显示控制器    [self presentViewController:alert animated:YES completion:nil];

还可以添加文本输入框：

UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"标题" message:@"2222222" preferredStyle:UIAlertControllerStyleAlert];        //添加按钮    [alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil]];    [alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) {//        NSLog(@"点击了确定");        //拿到文本输入框的值        NSString *name = [alert.textFields[0] text];        NSString *pwd = [alert.textFields[1] text];        NSLog(@"%@ %@",name,pwd);    }]];        //还可以添加文本输入框    [alert addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {        textField.placeholder = @"请输入用户名";    }];    [alert addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {        textField.placeholder = @"请输入密码";    }];        //显示控制器    [self presentViewController:alert animated:YES completion:nil];

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