当我在 ios 目标 c 中单击表格单元格时如何调用弹出窗口答案

【问题标题】：how to call popup when i click in table cell in ios objective c当我在 ios 目标 c 中单击表格单元格时如何调用弹出窗口
【发布时间】：2016-04-07 07:11:25
【问题描述】：

self.infoView.hidden = NO;

self.infoView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.7];

我想在表格视图中调用薄

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    if (indexPath.row==0) {
        return;
    }

    NSMutableDictionary *Tag_Dic = [NSMutableDictionary dictionary];
    [Tag_Dic setObject:[NSNumber numberWithInteger:indexPath.row] forKey:@"Tags"];
    [[NSNotificationCenter defaultCenter] postNotificationName:@"MoveToNext" object:self userInfo:Tag_Dic];
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    [defaults setInteger:indexPath.row forKey:@"SenderTag"];
    [defaults synchronize];
}

【问题讨论】：

你想在单元格点击时显示 UIAlertView 吗？

标签： ios objective-c iphone uitableview

【解决方案1】：

试试这个。点击UITableViewCell时必须显示alertController

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{


     [cell.button addTarget:self action:@selector(presentAlert) forControlEvents:UIControlEventTouchUpInside];
}

然后在presentAlert 选择器中为UIAlertController 编写代码。

 UIAlertController * alert=   [UIAlertController

                              alertControllerWithTitle:@"Title"

                              message:@"message"

                              preferredStyle:UIAlertControllerStyleAlert];



UIAlertAction* ok = [UIAlertAction

                     actionWithTitle:@"OK"

                     style:UIAlertActionStyleDefault

                     handler:^(UIAlertAction * action)

                     {

                     }];

UIAlertAction* cancel = [UIAlertAction

                         actionWithTitle:@"Cancel"

                         style:UIAlertActionStyleDefault

                         handler:^(UIAlertAction * action)

                         {

                             [alert dismissViewControllerAnimated:YES completion:nil];

                         }];



[alert addAction:ok];

[alert addAction:cancel];



[self presentViewController:alert animated:YES completion:nil];

【讨论】：

【解决方案2】：

如果您想在单击表格视图单元格时显示警报，请按照didSelectRowAtIndexPath 方法进行操作。

对于 iOS 9 及更早版本，

UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Title" message:@"Message" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"Button1",@"Button2", nil];
alertView.delegate = self;
[alertView show];

和用户UIAlertView 的委托方法来实现你的点击按钮时的逻辑

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex

对于 iOS 9 及更高版本（UIAlertView 已弃用。）

UIAlertAction *actionOK = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {

    //handel when OK button is pressed.

}];

UIAlertAction *actionCancel = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {

    //handel when Cancel button is pressed.

}];

UIAlertController *alertVC = [UIAlertController alertControllerWithTitle:@"Title" message:@"Message" preferredStyle:UIAlertControllerStyleAlert];

[alertVC addAction:actionOK];
[alertVC addAction:actionCancel];

[self presentViewController:alertVC animated:true completion:nil];

【讨论】：

【解决方案3】：

在 ios 8.3 及更早的版本中使用此代码，

- (void)saveButton {
     UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Title" message:@"Message" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
        [alert show];
}

在使用 UIAlertController 的 8.4 弹出操作之后，我在弹出视图中创建了 UITextField，下面给出了操作，

- (void)callAlert {
    UIAlertController *alert= [UIAlertController
                                  alertControllerWithTitle:@"Enter Folder Name"
                                  message:@"Keep it short and sweet"
                                  preferredStyle:UIAlertControllerStyleAlert];

    UIAlertAction* ok = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault
                                               handler:^(UIAlertAction * action){
                                                   //Do Some action here
                                                   UITextField *textField = alert.textFields[0];
                                                   NSLog(@"text was %@", textField.text);

                                               }];
    UIAlertAction* cancel = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleDefault
                                                   handler:^(UIAlertAction * action) {

                                                       NSLog(@"cancel btn");

                                                       [alert dismissViewControllerAnimated:YES completion:nil];

                                                   }];

    [alert addAction:ok];
    [alert addAction:cancel];

    [alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {
        textField.placeholder = @"folder name";
        textField.keyboardType = UIKeyboardTypeDefault;
    }];

    [self presentViewController:alert animated:YES completion:nil];

}

最后在你想调用的地方调用这个方法，希望对你有帮助。

【讨论】：