iOS开发 - UIAlertController 弹框提醒

来源：互联网发布：帝国主义算法编辑：程序博客网时间：2024/05/17 03:37

传统的alertView

- (void)alertView{    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"警告" message:@"你的操作时非法的，您要继续吗" delegate:nil cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];    alert.alertViewStyle = UIAlertViewStyleLoginAndPasswordInput;    [alert show];}

这里写图片描述

传统的actionSheet

- (void)actionSheet{    UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:@"警告:你的操作时非法的，您要继续吗" delegate:nil cancelButtonTitle:@"取消" destructiveButtonTitle:@"确定"                                              otherButtonTitles:@"关闭", nil];    [sheet showInView:self.view]; }

这里写图片描述

UIAlertController == UIAlertView + UIActionSheet

- (void)alertController{    // 危险操作:弹框提醒    // 1.UIAlertView    // 2.UIActionSheet    // iOS8开始:UIAlertController == UIAlertView + UIActionSheet    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"警告" message:@"你的操作时非法的，您要继续吗" preferredStyle:UIAlertControllerStyleAlert];    // 添加按钮    __weak typeof(alert) weakAlert = alert;    [alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDestructive handler:^(UIAlertAction *action) {        NSLog(@"点击了确定按钮--%@-%@", [weakAlert.textFields.firstObject text], [weakAlert.textFields.lastObject text]);    }]];    [alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {        NSLog(@"点击了取消按钮");    }]];    [alert addAction:[UIAlertAction actionWithTitle:@"其它" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {        NSLog(@"点击了其它按钮");    }]];    // 添加文本框    [alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {        textField.textColor = [UIColor redColor];        textField.text = @"123";        [textField addTarget:self action:@selector(usernameDidChange:) forControlEvents:UIControlEventEditingChanged];        //        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(usernameDidChange:) name:UITextFieldTextDidChangeNotification object:textField];    }];    [alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {        textField.secureTextEntry = YES;        textField.text = @"123";    }];    [self presentViewController:alert animated:YES completion:nil];}- (void)usernameDidChange:(UITextField *)username{    NSLog(@"%@", username.text);}

这里写图片描述

其他操作

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"警告" message:@"你的操作时非法的，您要继续吗" preferredStyle:UIAlertControllerStyleActionSheet];    // 设置popover指向的item    alert.popoverPresentationController.barButtonItem = self.navigationItem.leftBarButtonItem;    // 添加按钮    [alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDestructive handler:^(UIAlertAction *action) {        NSLog(@"点击了确定按钮");    }]];    [alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {        NSLog(@"点击了取消按钮");    }]];    [self presentViewController:alert animated:YES completion:nil];}// UIAlertControllerStyleActionSheet的使用注意// 1.不能有文本框// 2.在iPad中,必须使用popover的形式展示// Text fields can only be added to an alert controller of style UIAlertControllerStyleAlert// 只能在UIAlertControllerStyleAlert样式的view上添加文本框

这里写图片描述

0 0