[英]UITextField In UIAlert Input Not Working iOS 7
我當前正在使用以下命令使用彈出警報,該警報允許用戶設置延遲(以秒為單位);
輸入本身可以正常工作,但數字不會被記住,因此,如果我輸入5或10,則在按“設置”時,它將忽略該值並再次進行即時記錄。 這是調用setDelay的IBAction,在它下面,我發布了Alertview
-(IBAction)setDelay:(id)sender
{
// open a alert with text field, OK and cancel button
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Set delay in seconds" message:@" "
delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"Set", nil];
CGRect frame = CGRectMake(14, 45, 255, 23);
if(!delayTextField) {
delayTextField = [[UITextField alloc] initWithFrame:frame];
delayTextField.borderStyle = UITextBorderStyleBezel;
delayTextField.textColor = [UIColor blackColor];
delayTextField.textAlignment = UITextAlignmentLeft;
delayTextField.font = [UIFont systemFontOfSize:14.0];
delayTextField.backgroundColor = [UIColor redColor];
delayTextField.autocorrectionType = UITextAutocorrectionTypeNo; // no auto correction support
delayTextField.keyboardType = UIKeyboardTypeNumbersAndPunctuation; // use the default type input method (entire keyboard)
delayTextField.returnKeyType = UIReturnKeyDefault;
delayTextField.delegate = self;
delayTextField.clearButtonMode = UITextFieldViewModeWhileEditing; // has a clear 'x' button to the right
}
else
{
delayTextField.text=@"";
}
alert.delegate=self;
[alert addSubview:delayTextField];
[alert setAlertViewStyle:UIAlertViewStylePlainTextInput];
[alert show];
[alert release];
}
//
-(void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
{
if (alertView.tag==100)
{
if (buttonIndex!=alertView.cancelButtonIndex)
{
[self featureButtonPressed];
}
}
else
{
if (buttonIndex==alertView.cancelButtonIndex)
{
self.delayTextField.text=@"";
}
}
}
從iOS 7開始,您無法再將子視圖添加到UIAlertView
- iOS7中的UIAlertView addSubview 。
但是,如果您只需要在UIAlertView
簡單的UITextField
,則可以將UIAlertView
樣式設置為UIAlertViewStylePlainTextInput
然后在該字段中檢索值。 例如。
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Set delay in seconds" message:@" "
delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"Set", nil];
alert.delegate=self;
[alert addSubview:delayTextField];
[alert setAlertViewStyle:UIAlertViewStylePlainTextInput];
[alert show];
然后在您的委托方法中:
-(void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
{
if (alertView.tag==100)
{
if (buttonIndex!=alertView.cancelButtonIndex)
{
[self featureButtonPressed];
}
}
else
{
if (buttonIndex==alertView.cancelButtonIndex)
{
UITextField *alertViewTextField = [alertView textFieldAtIndex:0];
//Do something with alertViewTextField.text value
}
}
}
@Guferos的答案是絕對正確的。 它不起作用,因為iOS 7不支持此功能。
但是,如果您需要的不僅僅是簡單的TextView,則可以使用諸如https://github.com/jdg/MBProgressHUD之類的框架
:)
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