我已经编写了自己的函数，当键盘出现时滚动文本字段。为了通过点击离开文本字段来取消键盘，我创建了一个UITapGestureRecognizer，它负责在点击离开时放弃文本字段上的第一个响应器。
现在我还为文本字段创建了一个自动完成，它在文本字段的下面创建了一个UITableView，并在用户输入文本时用项目填充它。
但是，当选择自动补全表中的一个条目时，不会调用didSelectRowAtIndexPath。相反，它似乎是点击手势识别器被调用，只是辞职第一响应器。
我猜有一些方法告诉点击手势识别器继续将点击消息传递给UITableView，但我不知道它是什么。任何帮助都将不胜感激。
当前回答
下面是我的解决方案，它将识别器的shouldReceiveTouch直接绑定到键盘是否显示。
在点击手势识别器委托中:
#pragma mark - UIGestureRecognizerDelegate
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
if ([PFXKeyboardStateListener sharedInstance].visible) {
return YES;
}
return NO;
}
PFXKeyboardStateListener.h:
@interface PFXKeyboardStateListener : NSObject
{
BOOL _isVisible;
}
+ (PFXKeyboardStateListener *)sharedInstance;
@property (nonatomic, readonly, getter=isVisible) BOOL visible;
@end
PFXKeyboardStateListener.m:
static PFXKeyboardStateListener *sharedInstance;
@implementation PFXKeyboardStateListener
+ (PFXKeyboardStateListener *)sharedInstance
{
return sharedInstance;
}
+ (void)load
{
@autoreleasepool {
sharedInstance = [[self alloc] init];
}
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (BOOL)isVisible
{
return _isVisible;
}
- (void)didShow
{
_isVisible = YES;
}
- (void)didHide
{
_isVisible = NO;
}
- (id)init
{
if ((self = [super init])) {
NSNotificationCenter *center = [NSNotificationCenter defaultCenter];
[center addObserver:self selector:@selector(didShow) name:UIKeyboardDidShowNotification object:nil];
[center addObserver:self selector:@selector(didHide) name:UIKeyboardWillHideNotification object:nil];
}
return self;
}
@end
你可能想要更新键盘监听器的单例模式，我还没有得到它。希望这对每个人都有用，就像对我一样。^ ^
其他回答
我的情况是不同的，包括一个uisearchbar和uitableview在self.view。我想通过触摸视图来消除uisearchbar键盘。
var tapGestureRecognizer:UITapGestureRecognizer?
override func viewWillAppear(animated: Bool) {
tapGestureRecognizer = UITapGestureRecognizer(target: self, action:Selector("handleTap:"))
}
关于UISearchBar委托方法:
func searchBarShouldBeginEditing(searchBar: UISearchBar) -> Bool {
view.addGestureRecognizer(tapGestureRecognizer!)
return true
}
func searchBarShouldEndEditing(searchBar: UISearchBar) -> Bool {
view.removeGestureRecognizer(tapGestureRecognizer!)
return true
}
当用户触摸self.view时:
func handleTap(recognizer: UITapGestureRecognizer) {
sampleSearchBar.endEditing(true)
sampleSearchBar.resignFirstResponder()
}
Swift解决方案将于2021年生效。对于这个解决方案，你不需要有对表视图的引用。
func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {
//return !(touch.view is UITableViewCell) <-- doesn't work, the type of the touched class is not UITableViewCell anymore
var v = touch.view
while v != nil {
if v is UITableView { return false }
v = v?.superview
}
return true
}
用法:
let gestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(YOUR_METHOD))
gestureRecognizer.delegate = self
YOUR_VIEW.addGestureRecognizer(gestureRecognizer)
斯威夫特(根据@Jason的回答):
class MyAwesomeClass: UIViewController, UIGestureRecognizerDelegate
private var tap: UITapGestureRecognizer!
override func viewDidLoad() {
super.viewDidLoad()
self.tap = UITapGestureRecognizer(target: self, action: "viewTapped:")
self.tap.delegate = self
self.view.addGestureRecognizer(self.tap)
}
// UIGestureRecognizerDelegate method
func gestureRecognizer(gestureRecognizer: UIGestureRecognizer, shouldReceiveTouch touch: UITouch) -> Bool {
if touch.view?.isDescendantOfView(self.tableView) == true {
return false
}
return true
}
好的，在搜索手势识别器文档后终于找到了。
解决方案是实现UIGestureRecognizerDelegate并添加以下内容:
#pragma mark UIGestureRecognizerDelegate methods
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
if ([touch.view isDescendantOfView:autocompleteTableView]) {
// Don't let selections of auto-complete entries fire the
// gesture recognizer
return NO;
}
return YES;
}
这样就解决了。希望这也能帮助到其他人。
这是我基于以上答案的解决方案… 这对我很有效……
//Create tap gesture for menu transparent view
UITapGestureRecognizer *rightTableTransparentViewTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(rightTableTransparentViewTapMethod:)];
[rightTableTransparentViewTap setCancelsTouchesInView:NO];
[_rightTableTransparentView addGestureRecognizer:rightTableTransparentViewTap];
- (void)rightTableTransparentViewTapMethod:(UITapGestureRecognizer *)recognizer {
//Write your code here
}
