blocks|key|2409692|text|您应该将手势识别器的目标设置为文本字段。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2409693|UITapGestureRecognizer+*doubleTap+=+[[UITapGestureRecognizer+alloc]+initWithTarget:textField+action:@selector(doubleTap:)];|code-block|syntax|javascript|2409694|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You should set the target of the Gesture Recognizer as the textfield.

<pre><code>UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:textField action:@selector(doubleTap:)];
</code></pre>

blocks|key|889440|text|通过子UITextView，我将这个方法添加到了.m文件中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|889441|-(BOOL)canBecomeFirstResponder
{
++++if+(self.editable+==+YES){
++++++++return+YES;
++++}
++++else{
++++return+NO;
++++}
}|code-block|syntax|javascript|889442|除此之外，我还使用了|889443|-+(BOOL)gestureRecognizer:(UIGestureRecognizer+*)gestureRecognizer+shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer+*)otherGesture
{
++++return+YES;
}|889444|这是我找到的解决问题的最好方法。我只想让双击编辑。我不希望文本选择，滚动等发生，直到它被双击。要进一步完成此操作，您需要使用UITextViewDelegate来转换textView.editable+=+NO|889445|-(void)textViewDidEndEditing:(UITextView+*)textView
{
++++[textView+setEditable:NO];
}|889446|entityMap^0|O|2|0|0|0|0|1Q|I|2B|M|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|10|8|@$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|S|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|T|$]]

Sublassing UITextView, I added this method to the <code>.m</code> file.

<pre><code>-(BOOL)canBecomeFirstResponder
{
 if (self.editable == YES){
 return YES;
 }
 else{
 return NO;
 }
}
</code></pre>

In addition to this, I used 

<pre><code>- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGesture
{
 return YES;
}
</code></pre>

This is the best way I found to solve my problem. I only wanted to allow double tapping to edit. I wanted no text selection, scrolling, etc to happen until it was double tapped. To futher finish this, you'll need a to use a <code>UITextViewDelegate</code> to turn <code>textView.editable = NO</code>

<pre><code>-(void)textViewDidEndEditing:(UITextView *)textView
{
 [textView setEditable:NO];
}
</code></pre>

blocks|key|4535328|text|我找到了一个简洁的解决方案，代码更少(Swift+4.2)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4535329|创建自定义UITextView类，并在其中编写以下代码|4535330|++++override+var+canBecomeFirstResponder:+Bool+{
++++if+self.isEditable+{
++++++++return+true
++++}+else+{
++++++++self.isEditable+=+true
++++++++return+false
++++}|code-block|syntax|javascript|4535331|然后在viewDidLoad()中编写以下代码(或者在故事板编辑器中取消选择behaviour下面的'Editable‘)|4535332|myTextView.isEditable+=+false|4535333|然后，在编辑完文本后，只需将相同的代码放在某个地方-例如。textViewDidEndEditing(_+textView:+UITextView)|4535334|myTextView.isEditable+=+false|4535335|当视图加载时，textView是不可编辑的，并且所有数据检测器都工作。然后，第二次点击允许对其进行编辑(并禁用数据检测器)。|4535336|一旦您退出textView，它将再次设置为不可编辑，并且数据检测器工作。|4535337|所有这些都没有任何手势识别器！|4535338|entityMap^0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|11|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|12|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|13|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|14|8|@]|9|@]|A|$G|H]]|$1|Q|3|R|5|6|7|15|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|17|8|@]|9|@]|A|$]]|$1|W|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|X|$]]

I found a neat solution, with less code (Swift 4.2):

Create a Custom UITextView Class and in it write this

<pre><code> override var canBecomeFirstResponder: Bool {
 if self.isEditable {
 return true
 } else {
 self.isEditable = true
 return false
 }
</code></pre>

Then in viewDidLoad() write the following (or deselect 'Editable' under behaviour in the storyboard editor)

<pre><code>myTextView.isEditable = false
</code></pre>

Then simply put the same code somewhere when you're finished editing the text - eg. textViewDidEndEditing(_ textView: UITextView) 

<pre><code>myTextView.isEditable = false
</code></pre>

When the view loads, the textView is not editable and all data detectors work. A second tap then allows it to be edited (and disables the data detectors).

As soon as you exit the textView, it's set to not editable again and the data detectors work.

All this without any gesture recognisers! :-D

So I have a UITextView I'm using to make a moveable, editable label (My prior searches on SO showed this to apparently be the best option). I need to have the user double tap to enable editing and set it to become the first responder. I can't find a way to do this, and all my other searches have turned up either outdated answers or vague answers. Nothing I've tried seems to work. I've tried using the <code>UITextViewDelegate</code> to have it start editing as opposed to selecting text using <code>textViewDidChangeSelection:</code>, but it doesn't work until you change the current selection. I also tried using a custom <code>UITapGestureRecognizer</code> like so:

<pre><code>UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doubleTap:)];
[doubleTap setNumberOfTapsRequired:2];
[doubleTap setNumberOfTouchesRequired:1];
[newLabel addGestureRecognizer:doubleTap];

-(void)doubleTap:(UITapGestureRecognizer *)sender
{
 NSLog(@"Double tap detected");
 NSLog(@"Sender view of class %@", [[sender view] class]);
 UITextView *tappedView = (UITextView *)[sender view];
 [tappedView setEditable:YES];
 [tappedView becomeFirstResponder];
// [tappedView setEditable:NO];
}
</code></pre>

The double tap gesture is never called. I'm not sure why. Strangely, it also doesn't select text either while it's like that. It seems to just break double tap gestures. Is there a way to get rid of the standard double tap selection gesture, or to modify it? Should I subclass UITextView and, if so, what would I change?

UITextView double tap to edit

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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所以我有一个UITextView，我用它来制作一个可移动的、可编辑的标签(我之前在So上的搜索显示这显然是最好的选择)。我需要让用户双击以启用编辑，并将其设置为第一响应者。我找不到这样做的方法，我所有的其他搜索结果要么是过时的答案，要么是模糊的答案。我试过的似乎都不管用。我尝试过使用UITextViewDelegate...

问UITextView双击以进行编辑
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