我想知道如何使键盘消失时,用户触摸以外的UITextField。
当前回答
这是
在本例中,aTextField是唯一的UITextField....如果有其他的uitextview,还有一点点事情要做。
// YourViewController.h
// ...
@interface YourViewController : UIViewController /* some subclass of UIViewController */ <UITextFieldDelegate> // <-- add this protocol
// ...
@end
// YourViewController.m
@interface YourViewController ()
@property (nonatomic, strong, readonly) UITapGestureRecognizer *singleTapRecognizer;
@end
// ...
@implementation
@synthesize singleTapRecognizer = _singleTapRecognizer;
// ...
- (void)viewDidLoad
{
[super viewDidLoad];
// your other init code here
[self.view addGestureRecognizer:self.singleTapRecognizer];
{
- (UITapGestureRecognizer *)singleTapRecognizer
{
if (nil == _singleTapRecognizer) {
_singleTapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTapToDismissKeyboard:)];
_singleTapRecognizer.cancelsTouchesInView = NO; // absolutely required, otherwise "tap" eats events.
}
return _singleTapRecognizer;
}
// Something inside this VC's view was tapped (except the navbar/toolbar)
- (void)singleTapToDismissKeyboard:(UITapGestureRecognizer *)sender
{
NSLog(@"singleTap");
[self hideKeyboard:sender];
}
// When the "Return" key is pressed on the on-screen keyboard, hide the keyboard.
// for protocol UITextFieldDelegate
- (BOOL)textFieldShouldReturn:(UITextField*)textField
{
NSLog(@"Return pressed");
[self hideKeyboard:textField];
return YES;
}
- (IBAction)hideKeyboard:(id)sender
{
// Just call resignFirstResponder on all UITextFields and UITextViews in this VC
// Why? Because it works and checking which one was last active gets messy.
[aTextField resignFirstResponder];
NSLog(@"keyboard hidden");
}
其他回答
我认为最简单(最好)的方法是子类化全局视图,并使用hitTest:withEvent方法来监听任何触摸。键盘上的触摸没有注册,所以hitTest:withEvent只在你触摸/滚动/滑动/捏…然后调用[self - ending:YES]。
这比使用touchesBegan要好,因为如果你点击视图顶部的按钮,touchesBegan不会被调用。它比无法识别滚动手势的UITapGestureRecognizer更好。它也比使用暗屏更好,因为在复杂和动态的用户界面中,你不能到处都放暗屏。此外,它不会阻止其他动作,你不需要点击两次来选择外面的按钮(就像在UIPopover的情况下)。
此外,这比调用[textField resignFirstResponder]更好,因为你可能在屏幕上有许多文本字段,所以这适用于所有的文本字段。
只是在这里添加我的版本如何在外部触摸时取消键盘。
viewDidLoad:
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];
[self.view addGestureRecognizer:singleTap];
在任何地方:
-(void)handleSingleTap:(UITapGestureRecognizer *)sender{
[textFieldName resignFirstResponder];
puts("Dismissed the keyboard");
}
藏品视图:
// the keyboard follows the dragging touch off screen, and may be pulled upward again to cancel the dismiss
collectionView.keyboardDismissMode = .interactive
// dismisses the keyboard when a drag begins
collectionView.keyboardDismissMode = .onDrag
我试了这里的很多回答,都不太走运。我的点击手势识别器总是导致我的UIButtons在点击时不响应,即使我将手势识别器的cancelsTouchesInView属性设置为NO。
这就是最终解决问题的方法:
有一个ivar:
UITapGestureRecognizer *_keyboardDismissGestureRecognizer;
当文本字段开始编辑时,设置手势识别器:
- (void) textFieldDidBeginEditing:(UITextField *)textField
{
if(_keyboardDismissGestureRecognizer == nil)
{
_keyboardDismissGestureRecognizer = [[[UITapGestureRecognizer alloc]
initWithTarget:self
action:@selector(dismissKeyboard)] autorelease];
_keyboardDismissGestureRecognizer.cancelsTouchesInView = NO;
[self.view addGestureRecognizer:_keyboardDismissGestureRecognizer];
}
}
窍门在于如何设置遣散键盘方法:
- (void) dismissKeyboard
{
[self performSelector:@selector(dismissKeyboardSelector) withObject:nil afterDelay:0.01];
}
- (void) dismissKeyboardSelector
{
[self.view endEditing:YES];
[self.view removeGestureRecognizer:_keyboardDismissGestureRecognizer];
_keyboardDismissGestureRecognizer = nil;
}
我猜有一些关于从触摸处理执行堆栈中获得dismissKeyboardSelector执行的东西…
最简单和最短的方法之一是将此代码添加到viewDidLoad
[self.view addGestureRecognizer:[[UITapGestureRecognizer alloc]
initWithTarget:self.view
action:@selector(endEditing:)]];
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