如何使UILabel中的特定单词可选(Swift 2.0)？
如何使UILabel中的特定单词可选(Swift 2.0)？
提问于 2015-12-29 22:58:04
我一直在面对一个很大的问题，可能一整天都有一个简单的解决方案。我有一个包含NSAttributedString的UILabel。我希望UILabel中的一个特定范围是可点击的。我不想要任何第三方功能。
下面是我的示例代码：
let str = dict["itemName"] as! NSString
range = string.rangeOfString(dict["itemName"] as! String)!
index = string.startIndex.distanceTo(range.startIndex)
attributedString.addAttribute(NSForegroundColorAttributeName, value: color, range: NSRange(location: index, length: str.length))回答 3
Stack Overflow用户
发布于 2015-12-30 00:24:17
你可以使用UITextview并添加点击手势，而不是使用UILabel。下面是一个例子，你可以通过它来达到同样的效果。
/* Set Tap gesture on Text view */
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapResponse:)];
tapGesture.numberOfTapsRequired = 1;
[yourTextView addGestureRecognizer:tapGesture];
- (void) tapResponse:(UITapGestureRecognizer *)recognizer
{
UITextView *textView = (UITextView *)recognizer.view;
CGPoint location = [recognizer locationInView:textView];
CGPoint position = CGPointMake(location.x, location.y);
//get location in text from textposition at point
UITextPosition *tapPosition = [textView closestPositionToPoint:position];
//fetch the word at this position (or nil, if not available)
UITextRange *textRange = [textView.tokenizer rangeEnclosingPosition:tapPosition withGranularity:UITextGranularityWord inDirection:UITextLayoutDirectionRight];
NSString *tappedWord = [textView textInRange:textRange];
NSLog(@"tapped word : %@", tappedWord);
}Stack Overflow用户
发布于 2016-01-01 00:41:36
**ClickableTextView.h**
@protocol ClickableTextViewDelegate <NSObject>
@required
-(void)textview:(UITextView *)clickableTextView clickedText:(NSString *)text;
@end
@interface ClickableTextView : UITextView
@property (weak, nonatomic) id <ClickableTextViewDelegate> tapDelegate;
-(instancetype)initWithDelegate:(id)delegate;
@end
**ClickableTextView.m**
-(void)awakeFromNib {
[super awakeFromNib];
[self setProperties];
}
-(void)setProperties {
self.userInteractionEnabled = YES;
self.editable = NO;
self.scrollEnabled = NO;
self.textContainerInset = UIEdgeInsetsMake(0, 0, 0, 0);
self.dataDetectorTypes = UIDataDetectorTypeLink;
self.backgroundColor = [UIColor clearColor];
/* Set Tap gesture on Text view */
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapResponse:)];
tapGesture.numberOfTapsRequired = 1;
[self addGestureRecognizer:tapGesture];
}
- (void) tapResponse:(UITapGestureRecognizer *)recognizer
{
UITextView *textView = (UITextView *)recognizer.view;
CGPoint location = [recognizer locationInView:textView];
CGPoint position = CGPointMake(location.x, location.y);
//get location in text from textposition at point
UITextPosition *tapPosition = [textView closestPositionToPoint:position];
//fetch the word at this position (or nil, if not available)
UITextRange *textRange = [textView.tokenizer rangeEnclosingPosition:tapPosition withGranularity:UITextGranularityWord inDirection:UITextLayoutDirectionRight];
NSString *tappedWord = [textView textInRange:textRange];
NSLog(@"tapped word : %@", tappedWord);
if(tappedWord) {
if([self.tapDelegate respondsToSelector:@selector(textview:clickedText:)]){
[self.tapDelegate textview:self clickedText:tappedWord];
}
}
}在TableViewCell中使用此自定义类而不是UITextView，然后在
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath并在委托方法中获得结果。
-(void)textview:(UITextView *)clickableTextView clickedText:(NSString *)text {
}Stack Overflow用户
发布于 2016-02-11 17:32:31
Swift 2.0:
最好使用UITextView来实现此目的。
1)制作TapGesture并添加到UITextView中。覆盖函数viewDidLoad() { super.viewDidLoad()
let tapGesture: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "tapResponse:")
tapGesture.numberOfTapsRequired = 1
sampleTextView.addGestureRecognizer(tapGesture)
}2)添加获取所选单词的方法。
func tapResponse(recognizer: UITapGestureRecognizer) {
let location: CGPoint = recognizer.locationInView(sampleTextView)
let position: CGPoint = CGPointMake(location.x, location.y)
let tapPosition: UITextPosition = sampleTextView.closestPositionToPoint(position)!
let textRange: UITextRange = sampleTextView.tokenizer.rangeEnclosingPosition(tapPosition, withGranularity: .Word, inDirection: 1)!
let tappedWord: String = sampleTextView.textInRange(textRange)!
print("tapped word : %@", tappedWord)
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/34513578
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