如何删除 UITextView 底部的空格？

Question

我正在使用 UITextView 并且我想删除 UITextview 底部的空格。

Answer 1

像这样的东西吗？

textView.text = [textView.text stringByTrimmingCharactersInSet:[NSCharacterSetwhitespaceAndNewlineCharacterSet]];

Answer 2

我已经更新了上面的代码。尝试一下。我认为你得到了想要的结果..

// Create a size with large height, but matching width to UITextView.
[myTextView setBackgroundColor:[UIColor greenColor]];
CGSize maxSize = CGSizeMake(myTextView.frame.size.width, 20);

// Determine the size needed to display the text - we just need the new height.
CGSize textSize = [myTextView.text sizeWithFont:myTextView.font constrainedToSize:maxSize lineBreakMode:UILineBreakModeWordWrap];

// Set the UITextView's frame to the new height.
CGRect textViewRect = myTextView.frame;
textViewRect.size.height = textSize.height+13;
myTextView.frame = textViewRect;

Answer 3

我假设/猜测您希望调整 UITextView 的大小以很好地容纳文本。如果是这样，我建议您进行调查：

- (CGSize)sizeWithFont:(UIFont *)font constrainedToSize:(CGSize)size lineBreakMode:(UILineBreakMode)lineBreakMode;

例如：

// Create a size with large height, but matching width to UITextView.
CGSize maxSize = CGSizeMake(myTextView.frame.size.width, 9999);

// Determine the size needed to display the text - we just need the new height.
CGSize textSize = [myTextView.text sizeWithFont:myTextView.font constrainedToSize:maxSize lineBreakMode:UILineBreakModeWordWrap];

// Set the UITextView's frame to the new height.
CGRect textViewRect = myTextView.frame;
textViewRect.size.height = textSize.height;
myTextView.frame = textViewRect;