ios - 输入对话框中的 UITextField 未显示

Question

我正在实现一个要求输入名称的简单对话框。这是我的代码:

UIAlertView* dialog = [[UIAlertView alloc] init];
[dialog setDelegate:self];
[dialog setTitle:@"Enter Name"];
[dialog setMessage:@" "];
[dialog addButtonWithTitle:@"Cancel"];
[dialog addButtonWithTitle:@"OK"];

UITextField *nameField = [[UITextField alloc] initWithFrame:CGRectMake(20.0, 45.0, 245.0, 25.0)];
[nameField setBackgroundColor:[UIColor whiteColor]];
[dialog addSubview:nameField];
CGAffineTransform moveUp = CGAffineTransformMakeTranslation(0.0, 20.0);
[dialog setTransform: moveUp];
[dialog show];
[dialog release];
[nameField release];

它过去工作正常，但在 iOS 7 中文本字段不显示。谁能帮忙？

Answer 1

这在 iOS7 中不再有效 试试这个

  UIAlertView * alert = [[UIAlertView alloc] initWithTitle:nil message:NSLocalizedString(@"Enter a phone number",nil)  delegate:self cancelButtonTitle:NSLocalizedString(@"Cancel",nil) otherButtonTitles:NSLocalizedString(@"OK",nil), nil];
                alert.alertViewStyle = UIAlertViewStylePlainTextInput;
                [alert setTag:1];
                [[alert textFieldAtIndex:0] setDelegate:self];
                [[alert textFieldAtIndex:0] resignFirstResponder];
                [[alert textFieldAtIndex:0] setPlaceholder:NSLocalizedString(@"Enter Number here", nil)];
                [[alert textFieldAtIndex:0] setKeyboardType:UIKeyboardTypeNumberPad];
                [[alert textFieldAtIndex:0] becomeFirstResponder];

                [alert show];
                [alert release];

您可以根据需要更改键盘类型。

祝你好运:)