Ios 为什么光标不在UITextField的顶部?
我有一个iPad应用程序(XCode5、ARC、故事板、iOS 7)。这就是问题所在(占位符和光标位于UITextField中间): 这是创建它的代码:Ios 为什么光标不在UITextField的顶部?,ios,objective-c,uitextfield,Ios,Objective C,Uitextfield,我有一个iPad应用程序(XCode5、ARC、故事板、iOS 7)。这就是问题所在(占位符和光标位于UITextField中间): 这是创建它的代码: - (IBAction)bSendFeedback:(UIButton *)sender { // make the popover UIViewController* popoverContent = [[UIViewController alloc] init]; UIView* popoverView = [[UIView allo
- (IBAction)bSendFeedback:(UIButton *)sender {
// make the popover
UIViewController* popoverContent = [[UIViewController alloc] init];
UIView* popoverView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 450, 500)];
popoverView.backgroundColor = [UIColor colorWithWhite:(CGFloat)1.0 alpha:(CGFloat)1.0]; // frame color?
popoverContent.view = popoverView;
//resize the popover view shown in the current view to the view's size
popoverContent.contentSizeForViewInPopover = CGSizeMake(450, 500);
// add the UITextfield to the popover
UITextField *tf = [[UITextField alloc]initWithFrame:CGRectMake(0, 0, 450, 500)];
[tf becomeFirstResponder];
tf.delegate = self;
tf.tag = kSendFeedback;
tf.placeholder = @" Enter your comments here";
tf.backgroundColor = UIColorFromRGB(0xFFFFE0);
tf.returnKeyType = UIReturnKeyDone; // make return key read "Done"
[popoverView addSubview:tf];
// if previous popoverController is still visible... dismiss it
if ([popoverController isPopoverVisible]) {
[popoverController dismissPopoverAnimated:YES];
}
//create a popover controller
popoverController = [[UIPopoverController alloc] initWithContentViewController:popoverContent];
[popoverController presentPopoverFromRect:((UIButton *)oSendFeedback).frame inView:self.view
permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}
该映像来自于在iOS7下运行;在iOS 6下运行时工作正常。
如您所见,它可以正常工作,但光标/占位符应该位于UITextField的顶部。。。任何关于在ios下运行时它不存在的原因的想法&?苹果似乎已将ios 7中UITextField的默认垂直对齐方式更改为中心(
UIControlContentVerticalAlignmentCenter
),而不是ios 6及以前版本中的顶部(UIControlContentVerticalAlignmentTop
)
要在所有版本中修复它,请添加此行-
tf.contentVerticalAlignment = UIControlContentVerticalAlignmentTop;
这将把光标和占位符文本放在顶部。接得好 让我惊讶的是,苹果可以做到这一点而不必低声耳语。。。是的,非常非常好的接球!它解决了问题!非常感谢你。。。SD