问题描述
我正在尝试做与此链接中的类似的事情 http://www.oracle.com/webfolder/ux/mobile/pattern/img/expand-collpase-description.png
I am trying to do something similar to the one in this link http://www.oracle.com/webfolder/ux/mobile/pattern/img/expand-collpase-description.png
单击更多"按钮时扩展 UITextView 内的内容.我正在我的 viewDidLoad 中创建按钮，如下所示
Expanding the content inside a UITextView when clicking the button 'more'. I am creating the button in my viewDidLoad like the below
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button setTitle:@"more" forState:UIControlStateNormal];
[self.detailPriceView addSubview:button];
从 PFQuery 加载数据后，我正在 UITextView 内设置按钮的框架
I am setting the frame of the button inside the UITextView after loading the data from PFQuery
PFQuery *query = [PFQuery queryWithClassName:self.restaurantName];
[query whereKey:@"ItemName" equalTo:self.item_name];
[query getFirstObjectInBackgroundWithBlock:^(PFObject *itemDataObj, NSError *error) {
if (!error) {
self.detailPriceView.text = [itemDataObj objectForKey:@"PriceDetail"];
self.detailPriceView.text = [self.detailPriceView.text substringToIndex:40];
[button setFrame:self.detailPriceView.frame];
}
}];
如何在文本末尾的 UITextView 中添加更多按钮?我还创建了一个约束以在单击更多按钮时增加它的高度，但我无法将约束的高度增加到超过某个阈值大小.
How to add more button inside UITextView at the end of the text ? Also i created a constraint to increase it's height when the more button is clicked, but i'm unable to increase the constraint's height beyond some threshold size.
推荐答案
我也在做同样的事情.只需将按钮添加到textView.superView，因为textView 是scrollView.在 textView 中使用按钮的矩形作为textView.textContainer.exclusionPaths = [UIBezierPath(rect: rect)]
I'm doing the same thing. Just add the button to textView.superView, because textView is scrollView. Use button's rect in textView as
textView.textContainer.exclusionPaths = [UIBezierPath(rect: rect)]
最后，我做到了.最重要的是 rect 必须在 textView.frame 中包含.
At last, I did it. Most important thing is rect must be included in textView.frame.
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