ios uitextview 随输入内容增多高度增加

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#合辑# 面试问优缺点怎么回答最加分？

育知同创教育
2016-04-08 · 百度知道合伙人官方认证企业

育知同创教育

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让文本框跟随键盘
我们在打开ContentView 打开键盘

然后添加键盘打开和关闭的通知，监听到通知后，调整CommentView的位置

[objc] view plain copy
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(keyboardShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(keyboardHide:
#pragma mark keyboardNotification
-(void)keyboardShow:(NSNotification *)note
{
CGRect keyBoardRect=[note.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
CGFloat deltaY=keyBoardRect.size.height;
[UIView animateWithDuration:[note.userInfo[UIKeyboardAnimationDurationUserInfoKey] floatValue] animations:^{
commentV.transform=CGAffineTransformMakeTranslation(0, -deltaY);
}];
}
-(void)keyboardHide:(NSNotification *)note
{
[UIView animateWithDuration:[note.userInfo[UIKeyboardAnimationDurationUserInfoKey] floatValue] animations:^{
commentV.transform=CGAffineTransformIdentity;
} completion:^(BOOL finished) {
commentV.textView.text=@"";
[commentV removeFromSuperview];
}];
}

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