解雇键盘时，如何将现有文本字段保留在同一位置? [英] When dismissing keyboard how do I keep my existing text fields in the same location?
问题描述
因此，我有一个包含UITextField和UILabel的UIScrollView，并且当用户在UITextField中单击时，键盘将显示.但是我需要一种允许用户关闭键盘的方法，而我试图使用向下滑动手势来完成操作(如在消息"中一样).我将手势识别器"添加到情节提要中的视图中，并将动作"添加到头文件中.方法如下:
So I have a UIScrollView that contains UITextFields and UILabels, and when the user clicks inside a UITextField the keyboard shows. But I need a way to allow the user to dismiss the keyboard and I was try to use the swipe down gesture to do it (as in Messages). I added the Gesture Recognizer to my view in the storyboard and added the Action to the header file. Here is the method:
- (IBAction)SwipeKeyboardDown:(id)sender
{
if(self.moveTextField)
{
[self.moveTextField resignFirstResponder];
}
}
当用户单击第一个文本字段时，以及当他们尝试向下滑动所有文本字段并将标签移到屏幕底部时，我只需要进行测试.我需要做些什么来保持文本字段和标签的位置吗?我正在使用自动版式"，并在情节提要中创建了它们.
I just have the if there for testing when a user has clicked on the first text field, and when they try to swipe down all of the text field and labels move to the bottom of the screen. Is there anything I need to do to keep the text fields and labels in their place? I am using Auto Layout and I created them all in the storyboard.
这是向下滑动键盘之前我的视图的外观:
This is how my view looks before swiping the keyboard down:
这是向下滑动后的样子:
And this is how it looks after swiping down:
感谢您的帮助，如果需要更多信息，请询问，我可以提供更多信息.
Thanks for the help, and if more info is needed please ask and I can provide more.
回溯:
2014-02-02 01:28:33.453 BJJDrillingAppPro[512:70b] (
0 BJJDrillingAppPro 0x0001de82 -[AddMoveViewControllerPro observeValueForKeyPath:ofObject:change:context:] + 210
1 Foundation 0x0116e8c7 NSKeyValueNotifyObserver + 362
2 Foundation 0x01170206 NSKeyValueDidChange + 458
3 Foundation 0x0112c8dd -[NSObject(NSKeyValueObserverNotification) didChangeValueForKey:] + 120
4 Foundation 0x010ffcc7 _NSSetPointValueAndNotify + 185
5 UIKit 0x00320cae -[UIScrollView(UIScrollViewInternal) _adjustContentOffsetIfNecessary] + 2622
6 UIKit 0x0030384d -[UIScrollView setContentSize:] + 354
7 BJJDrillingAppPro 0x0002023d -[AddMoveViewControllerPro keyboardDidHide] + 493
8 Foundation 0x011f2bf9 __57-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke + 40
9 CoreFoundation 0x017f8524 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 20
10 CoreFoundation 0x0175000b _CFXNotificationPost + 2859
11 Foundation 0x0112c951 -[NSNotificationCenter postNotificationName:object:userInfo:] + 98
12 UIKit 0x0071d6f5 -[UIInputViewTransition postNotificationsForTransitionStart] + 1004
13 UIKit 0x007137e2 -[UIPeripheralHost(UIKitInternal) executeTransition:] + 592
14 UIKit 0x00715c0e -[UIPeripheralHost(UIKitInternal) setInputViews:animationStyle:] + 1029
15 UIKit 0x00716019 -[UIPeripheralHost(UIKitInternal) setInputViews:animated:] + 72
16 UIKit 0x00716063 -[UIPeripheralHost(UIKitInternal) setInputViews:] + 67
17 UIKit 0x0070d2fa -[UIPeripheralHost(UIKitInternal) _reloadInputViewsForResponder:] + 1453
18 UIKit 0x003e707c -[UIResponder _finishResignFirstResponder] + 163
19 UIKit 0x003e719f -[UIResponder resignFirstResponder] + 265
20 UIKit 0x0096b5f4 -[UITextField resignFirstResponder] + 118
21 BJJDrillingAppPro 0x0001dd70 -[AddMoveViewControllerPro SwipeKeyboardDown:] + 288
22 UIKit 0x00605e8c _UIGestureRecognizerSendActions + 230
23 UIKit 0x00604b00 -[UIGestureRecognizer _updateGestureWithEvent:buttonEvent:] + 383
24 UIKit 0x0060656d -[UIGestureRecognizer _delayedUpdateGesture] + 60
25 UIKit 0x00609acd ___UIGestureRecognizerUpdate_block_invoke + 57
26 UIKit 0x00609a4e _UIGestureRecognizerRemoveObjectsFromArrayAndApplyBlocks + 317
27 UIKit 0x00600148 _UIGestureRecognizerUpdate + 199
28 UIKit 0x002cc19a -[UIWindow _sendGesturesForEvent:] + 1291
29 UIKit 0x002cd0ba -[UIWindow sendEvent:] + 1030
30 UIKit 0x002a0e86 -[UIApplication sendEvent:] + 242
31 UIKit 0x0028b18f _UIApplicationHandleEventQueue + 11421
32 CoreFoundation 0x0172583f __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
33 CoreFoundation 0x017251cb __CFRunLoopDoSources0 + 235
34 CoreFoundation 0x0174229e __CFRunLoopRun + 910
35 CoreFoundation 0x01741ac3 CFRunLoopRunSpecific + 467
36 CoreFoundation 0x017418db CFRunLoopRunInMode + 123
37 GraphicsServices 0x03aa39e2 GSEventRunModal + 192
38 GraphicsServices 0x03aa3809 GSEventRun + 104
39 UIKit 0x0028dd3b UIApplicationMain + 1225
40 BJJDrillingAppPro 0x0001bf0d main + 141
41 libdyld.dylib 0x0213c70d start + 1
42 ??? 0x00000001 0x0 + 1
)
在查看了我的键盘代码后，显示和隐藏了方法之后，我想知道是否在这里做错了事:
And after looking at my code for the keyboard did show and hide methods I am wondering if maybe I am doing something wrong there:
这在我的viewDidLoad中:
This is in my viewDidLoad:
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardDidShow)
name:UIKeyboardWillShowNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardDidHide)
name:UIKeyboardWillHideNotification
object:nil];
这些是选择器:
- (void)keyboardDidHide
{
if(keyboardShown)
{
CGRect r = self.scrollView.frame;
r.size.height += 216;
self.scrollView.frame = r;
keyboardShown = NO;
}
}
- (void)keyboardDidShow
{
if(!keyboardShown)
{
CGRect r = self.scrollView.frame;
self.scrollView.contentSize = self.scrollView.frame.size;
r.size.height -= 216;
self.scrollView.frame = r;
keyboardShown = YES;
}
}
推荐答案
您不需要手势识别器.
滚动视图具有keyboardDismissMode属性.将其设置为UIScrollViewKeyboardDismissModeOnDrag或UIScrollViewKeyboardDismissModeInteractive即可进入.
Scrollviews have the keyboardDismissMode property. Set it to UIScrollViewKeyboardDismissModeOnDrag or UIScrollViewKeyboardDismissModeInteractive and you are set to go.
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