UITextView自适应高度

最新推荐文章于 2022-02-13 14:12:21 发布

原创最新推荐文章于 2022-02-13 14:12:21 发布 · 1k 阅读

1 ·

CC 4.0 BY-SA版权

文章标签：

#UITextView自适应高度 #TextView自适应高度

iOS开发专栏收录该内容

15 篇文章

订阅专栏

博客介绍了在遇到UITextView计算文字高度不准确的问题时，如何通过Stack Overflow找到的解决方案，提供了相关的代码示例。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

之前textView算文字高度总是拿不到合适的高度。在Stack Overflow 找到了解决方法备注在此。

代码如下：

 UITextView * textView=[[UITextView alloc] initWithFrame:CGRectMake(20, 40, self.view.frame.size.width-40, 20)];
    textView.text=@"   I'm porting one of apps from iOS 6.1 to iOS 7. I'm using a layout where there's a UITextView that has a fix width, but it's height is based on its contentsize. For iOS 6.1 checking the contentsize.height and setting it as the textview's frame height was enough, but it doesn't work on iOS 7.\n  How can i then create a UITextView with a fixed width, but dynamic height based on the text it's showing? \n";
    textView.textColor=[UIColor brownColor];
    textView.font=[UIFont systemFontOfSize:14.0];
    textView.layer.borderColor=[[UIColor lightGrayColor] CGColor];
    textView.layer.borderWidth=1.0f;
    [self.view addSubview:textView];
        
    CGFloat fixedWidth = textView.frame.size.width;
    CGSize newSize = [textView sizeThatFits:CGSizeMake(fixedWidth, MAXFLOAT)];
    CGRect newFrame = textView.frame;
    newFrame.size = CGSizeMake(fmaxf(newSize.width, fixedWidth), newSize.height);
    textView.frame = newFrame;

下面是这个demo：