我需要在另一个下方创建两个文本输入字段。当用户在上部文本字段中键入时,我需要动态增加框架大小(不建议在 textview 内滚动。)并且下部文本输入框架应该向下。这可以在ios中实现吗?任何帮助将不胜感激。
问问题
1416 次
2 回答
4
您可以通过 contentSize 更新 textView 的框架,如下所示:
-(void)updateTextViewSize
{
CGRect rect = textView.frame;
rect.size.width = textView.contentSize.width;
rect.size.height = textView.contentSize.height;
textView.frame = rect;
//lowering the textView2 below this textView
//assuming that the lower textview touches the
//bottom of the upper textView.
CGRect rect2 = textViewLower.frame;
rect2.origin.y = textView.frame.origin.y + textView.frame.size.height;
textViewLower.frame = rect2;
//update your scrollView here
//assuming textView and textViewLower are already added to the scrollView
scrollView.contentSize = CGSizeMake(scrollView.contentSize.width, textViewLower.frame.origin.y + textViewLower.frame.size.height);
}
//implement this delegate method as shown below
-(void)textViewDidChange:(UITextView*)textView
{
[self updateTextViewSize];
}
于 2013-10-29T10:29:58.907 回答
-1
很容易根据 UITextView 的内容使用UITextView contentSize.
CGRect frame = _textView.frame;
frame.size.height = _textView.contentSize.height;
_textView.frame = frame;
于 2013-10-29T10:35:05.440 回答