Question

我正在实现一个简单的对话框，要求输入名称。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，文本字段并没有显示出来。有人可以帮忙吗？

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：）

Answer 2

尝试使用这样的...并且不需要将文本字段添加为子视图。

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

                dialog.alertViewStyle = UIAlertViewStylePlainTextInput;

CGAffineTransform moveUp = CGAffineTransformMakeTranslation(0.0, 20.0);
                [dialog setTransform: moveUp];
                [dialog show];
[dialog release];
[nameField release];

输入对话框中的UITextField未显示

2 个答案: