UITextView添加文本點(diǎn)擊事件掉奄，屏蔽其他事件問題記錄

UITextView 給某段文字添加點(diǎn)擊事件非常方便，使用富文本添加NSLinkAttributeName屬性即可暂幼。但是UITextView本身帶有許多編輯事件筏勒，導(dǎo)致在觸發(fā)NSLinkAttributeName事件時難免觸發(fā)一些我們不需要的事件移迫，影響用戶體驗(yàn)，即使設(shè)置textView.editable = NO;關(guān)閉textView的編輯事件也不能完全屏蔽管行。
為了解決這一問題厨埋，將UITextView上的所有手勢遍歷一遍，發(fā)現(xiàn)有22中手勢捐顷。

for (UIGestureRecognizer *ges in text.gestureRecognizers) {
        NSLog(@"textView ges description : %@", ges.description);    
}

結(jié)果:

2020-08-14 10:13:57.238155+0800 workspace[19737:376980] textView ges description : <UITextMultiTapRecognizer: 0x7fa03393a860 (UITextInteractionNameSingleTap); state = Possible; delaysTouchesEnded = NO; view = <UITextView 0x7fa032067800>; target= <(action=onStateUpdate:, target=<UITextMultiTapRecognizer 0x7fa03393a860>)>>
2020-08-14 10:13:57.238509+0800 workspace[19737:376980] textView ges description : <UITapAndAHalfRecognizer: 0x7fa03393a730 (UITextInteractionNameTapAndAHalf); state = Possible; view = <UITextView 0x7fa032067800>; target= <(action=tapAndAHalf:, target=<UITextSelectionInteraction 0x600001a34a80>)>>
2020-08-14 10:13:57.238949+0800 workspace[19737:376980] textView ges description : <UIVariableDelayLoupeGesture: 0x7fa03393a360 (UITextInteractionNameInteractiveLoupe); state = Possible; delaysTouchesEnded = NO; view = <UITextView 0x7fa032067800>; target= <(action=loupeGesture:, target=<UITextLoupeInteraction 0x6000014bd810>)>; numberOfTapsRequired = 0; minimumPressDuration = 0.5>
2020-08-14 10:13:57.239315+0800 workspace[19737:376980] textView ges description : <UITapGestureRecognizer: 0x7fa031d2b650 (UITextInteractionNameLinkTap); state = Possible; delaysTouchesEnded = NO; view = <UITextView 0x7fa032067800>; target= <(action=linkTapped:, target=<_UITextMenuLinkInteraction 0x6000012b08c0>)>>
2020-08-14 10:13:57.239669+0800 workspace[19737:376980] textView ges description : <UIScrollViewDelayedTouchesBeganGestureRecognizer: 0x600001fbea00; state = Possible; delaysTouchesBegan = YES; view = <UITextView 0x7fa032067800>; target= <(action=delayed:, target=<UITextView 0x7fa032067800>)>>
2020-08-14 10:13:57.268294+0800 workspace[19737:376980] textView ges description : <UIScrollViewPanGestureRecognizer: 0x7fa031d2a540; state = Possible; delaysTouchesEnded = NO; view = <UITextView 0x7fa032067800>; target= <(action=handlePan:, target=<UITextView 0x7fa032067800>)>>
2020-08-14 10:13:57.268759+0800 workspace[19737:376980] textView ges description : <UIScrollViewKnobLongPressGestureRecognizer: 0x7fa031d2a930; state = Possible; view = <UITextView 0x7fa032067800>; target= <(action=_handleKnobLongPressGesture:, target=<UITextView 0x7fa032067800>)>; numberOfTapsRequired = 0; minimumPressDuration = 0.1>
2020-08-14 10:13:57.268935+0800 workspace[19737:376980] textView ges description : <UIScrollViewKnobLongPressGestureRecognizer: 0x7fa031d2ab00; state = Possible; view = <UITextView 0x7fa032067800>; target= <(action=_handleKnobLongPressGesture:, target=<UITextView 0x7fa032067800>)>; numberOfTapsRequired = 0>
2020-08-14 10:13:57.269288+0800 workspace[19737:376980] textView ges description : <UIHoverGestureRecognizer: 0x7fa031d2acd0; state = Possible; view = <UITextView 0x7fa032067800>; target= <(action=_handleKnobHoverGesture:, target=<UITextView 0x7fa032067800>)>>
2020-08-14 10:13:57.269637+0800 workspace[19737:376980] textView ges description : <_UIDragAutoScrollGestureRecognizer: 0x600001caf0c0; state = Possible; cancelsTouchesInView = NO; delaysTouchesEnded = NO; view = <UITextView 0x7fa032067800>; target= <(action=_handleAutoScroll:, target=<UITextView 0x7fa032067800>)>>
2020-08-14 10:13:57.269956+0800 workspace[19737:376980] textView ges description : <_UIDragAddItemsGesture: 0x7fa031f14e10 (dragAddingItems); state = Possible; delaysTouchesBegan = YES; view = <UITextView 0x7fa032067800>>
2020-08-14 10:13:57.271577+0800 workspace[19737:376980] textView ges description : <_UIDragLiftGestureRecognizer: 0x7fa031f2a860 (dragInitiation); state = Possible; cancelsTouchesInView = NO; view = <UITextView 0x7fa032067800>; target= <(action=_dragInitiationGestureStateChanged:, target=<_UIDragInteractionLongPressDriver 0x6000011b5440>)>; numberOfTapsRequired = 0; minimumPressDuration = 0.325>
2020-08-14 10:13:57.271901+0800 workspace[19737:376980] textView ges description : <_UIRelationshipGestureRecognizer: 0x600001acea00 (dragExclusionRelationships); state = Possible; view = <UITextView 0x7fa032067800>>
2020-08-14 10:13:57.272043+0800 workspace[19737:376980] textView ges description : <_UIRelationshipGestureRecognizer: 0x600001ace920 (dragFailureRelationships); state = Possible; view = <UITextView 0x7fa032067800>>
2020-08-14 10:13:57.272365+0800 workspace[19737:376980] textView ges description : <_UIDragLiftPointerGestureRecognizer: 0x7fa031f2ae00 (dragInitiation); state = Possible; cancelsTouchesInView = NO; view = <UITextView 0x7fa032067800>; target= <(action=_dragInitiationGestureStateChanged:, target=<_UIDragInteractionLongPressDriver 0x6000011b55f0>)>; numberOfTapsRequired = 0; minimumPressDuration = 0.15>
2020-08-14 10:13:57.272552+0800 workspace[19737:376980] textView ges description : <_UIRelationshipGestureRecognizer: 0x600001acef40 (dragExclusionRelationships); state = Possible; view = <UITextView 0x7fa032067800>>
2020-08-14 10:13:57.272702+0800 workspace[19737:376980] textView ges description : <_UIRelationshipGestureRecognizer: 0x600001acee60 (dragFailureRelationships); state = Possible; view = <UITextView 0x7fa032067800>>
2020-08-14 10:13:57.273017+0800 workspace[19737:376980] textView ges description : <_UISecondaryClickDriverGestureRecognizer: 0x600001afe060; state = Possible; view = <UITextView 0x7fa032067800>; target= <(action=_handleGestureRecognizer:, target=<_UISecondaryClickClickInteractionDriver 0x6000036cd500>)>>
2020-08-14 10:13:57.273402+0800 workspace[19737:376980] textView ges description : <_UITouchDurationObservingGestureRecognizer: 0x7fa031d2c310 (com.apple.UIKit.longPressClickDriverPrimary); state = Possible; cancelsTouchesInView = NO; view = <UITextView 0x7fa032067800>; target= <(action=_handleGestureRecognizer:, target=<_UILongPressTimeoutClickInteractionDriver 0x600000088c80>)>>
2020-08-14 10:13:57.273564+0800 workspace[19737:376980] textView ges description : <_UITouchDurationObservingGestureRecognizer: 0x7fa031d2c640 (com.apple.UIKit.longPressClickDriverPrimary); state = Possible; cancelsTouchesInView = NO; view = <UITextView 0x7fa032067800>; target= <(action=_handleGestureRecognizer:, target=<_UILongPressTimeoutClickInteractionDriver 0x600000088cd0>)>>
2020-08-14 10:13:57.275039+0800 workspace[19737:376980] textView ges description : <_UIRelationshipGestureRecognizer: 0x600001a34700 (com.apple.UIKit.clickPresentationExclusion); state = Possible; view = <UITextView 0x7fa032067800>>
2020-08-14 10:13:57.275212+0800 workspace[19737:376980] textView ges description : <_UIRelationshipGestureRecognizer: 0x600001a347e0 (com.apple.UIKit.clickPresentationFailure); state = Possible; view = <UITextView 0x7fa032067800>>

其中與NSLinkAttributeName相關(guān)的linkTapped事件是一個UITapGestureRecognizer點(diǎn)擊事件荡陷，有且僅有一個，那么大膽嘗試一下迅涮，將所有除UITapGestureRecognizer外的手勢事件全部刪除:

for (UIGestureRecognizer *ges in textView.gestureRecognizers) {
            if (![ges isMemberOfClass:[UITapGestureRecognizer class]]) {
                [textView removeGestureRecognizer:ges];
            }
        }

刪除后發(fā)現(xiàn)確實(shí)只剩下了自己添加的NSLinkAttributeName點(diǎn)擊事件會響應(yīng)废赞，其他不相關(guān)事件的始終與完美屏蔽。

UITextView文本顯示邊距問題

1.去除文本上下邊距
textView.textContainerInset = UIEdgeInsetsZero;
2.出去文本左右邊距（將內(nèi)容縮進(jìn)設(shè)置為0）
textView.textContainer.lineFragmentPadding = 0;
使用上述方法去除文本左右邊距后叮姑，UITextView選擇功能出現(xiàn)問題唉地，左邊選擇控件無法移動問題据悔。
解決辦法：
textView.textContainer.lineFragmentPadding 默認(rèn)值為5，即文本默認(rèn)左右邊距為5耘沼，可通過textView.contentInset與textView.textContainer.lineFragmentPadding計(jì)算設(shè)置文本左右邊距极颓。

UITextView添加文本點(diǎn)擊事件罚渐，屏蔽其他事件問題記錄

UITextView添加文本點(diǎn)擊事件汤纸，屏蔽其他事件問題記錄

UITextView文本顯示邊距問題