iphone-sdk：在UIAlertview中添加文本字段在iOS 4中不起作用？ [英] iphone-sdk: Adding a textfield to UIAlertview does not work in iOS 4?

问题描述

我正在尝试将 uitextfield 添加到我的 alterview 。当用户尝试输入文本时， alterview 应该向上移动一点，这样键盘就不会重叠，当按下完成键时，键盘应该会消失， alertview 应该转回来。

I am trying to add uitextfield to my alterview. When the user tries to enter text the alterview is supposed to shift up a little bit so the keyboard does not overlap and when pressing the done key the keyboard is supposed to disappear and the alertview should shift back.

在iOS 3.1.2（以及3.2版本）中运行它一切正常）但是一旦我尝试在iOS 4下运行它， alertview 就会显示在错误的位置，键盘也不会消失。有什么建议么？这是我的代码：

It all works fine when run it in iOS 3.1.2 (and also in 3.2) but as soon as I try to run it under iOS 4 the alertview is displayed in the wrong position and the keyboard won't disappear. Any suggestions? Here is my code:

- (void)addItemAction{

workoutName = [[UIAlertView alloc] initWithTitle:@"New Workout" message:@"Insert the name of your new workout:\n                " delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"Done", nil];
workoutName.cancelButtonIndex = 0;
UITextField *titleField = [[UITextField alloc] initWithFrame:CGRectMake(12.0, 90.0, 260.0, 25.0)];
titleField.delegate = self;
titleField.borderStyle = UITextBorderStyleRoundedRect;
titleField.returnKeyType = UIReturnKeyDone;
[workoutName addSubview:titleField];
[workoutName show];


}
- (BOOL)textFieldShouldReturn:(UITextField *)textField {


[textField resignFirstResponder];
return YES;

}

- (void)textFieldDidBeginEditing:(UITextField *)textField {

[UIView beginAnimations:nil context:NULL];
CGAffineTransform myTransform = CGAffineTransformMakeTranslation(0.0, -70.0);
[workoutName setTransform:myTransform];
[UIView commitAnimations];

}

- (void)textFieldDidEndEditing:(UITextField *)textField {

[UIView beginAnimations:nil context:NULL];
CGAffineTransform myTransform = CGAffineTransformMakeTranslation(0.0, 0.0);
[workoutName setTransform:myTransform];
[UIView commitAnimations];
self.newWorkout = textField.text;

}

- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex{

if (buttonIndex == 1) {
    if (self.newWorkout != @"TestWorkout"){
    [self.workoutPlanArray insertObject:[NSDictionary dictionaryWithObjectsAndKeys:self.newWorkout, @"titleValue", @"04.08.10", @"dateValue", nil] atIndex:counter];
    counter++;
    [self.tableView reloadData];
    }
}


}

推荐答案

我也在我的应用程序中使用带有文本字段的alertview，&在ioS 4.0上也是如此。
工作正常。

I am also using alertview with a textfield in my application, & that too on ioS 4.0. Its working fine.

以下为示例代码：_

-(void)showAlert{

showAlert=YES; //boolean variable

createNewAlert =[[UIAlertView alloc] initWithTitle:@"ADD item" message:@"Put it blank textfield will cover this" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"OK", nil];

UITextField *txtName = [[UITextField alloc] initWithFrame:CGRectMake(12.0, 45.0, 260.0, 25.0)];
txtName.text=@"";
[txtName setBackgroundColor:[UIColor whiteColor]];
[txtName setKeyboardAppearance:UIKeyboardAppearanceAlert];
[txtName setAutocorrectionType:UITextAutocorrectionTypeNo];

[txtName setTextAlignment:UITextAlignmentCenter];
[createNewAlert addSubview:txtName];


[createNewAlert show];
}

此外，您还可以参考以下两种在键盘通知中调用的方法。 / p>

Also you can refer the following two methods which are called on Keyboard notifications.

-(void)keyboardWillShow: (id) notification {

if(showAlert==YES)
{

    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:0.3];
    [createNewAlert setTransform:CGAffineTransformMakeTranslation(0,-60)];
    [createNewAlert show];
    [UIView commitAnimations];
}

}

-(void)keyboardWillHide: (id) notification {

if(showAlert==YES) 
{


        [UIView beginAnimations:nil context:NULL];
        [UIView setAnimationDuration:0.3];
        [createNewAlert setTransform:CGAffineTransformMakeTranslation(0,+60)];

        [UIView commitAnimations];

}
}

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