本文主要是介绍IOS 键盘弹出遮挡输入框使view上移，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
有时候输入框在屏幕下方，键盘弹出遮挡了输入框有种盲输入的赶脚，那我们就可以把视图向上移动让它露出来。
首先在viewDidLoad中注册键盘显隐通知
//注册键盘弹出通知
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWillShow:)
name:UIKeyboardWillShowNotification
object:nil];
//注册键盘隐藏通知
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWillHide:)
name:UIKeyboardWillHideNotification
object:nil];
//键盘弹出后将视图向上移动
-(void)keyboardWillShow:(NSNotification *)note
{
NSDictionary *info = [note userInfo];
CGSize keyboardSize = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size;
//目标视图UITextField
CGRect frame = passwordTF.frame;
int y = frame.origin.y + frame.size.height - (self.view.frame.size.height - keyboardSize.height);
NSTimeInterval animationDuration = 0.30f;
[UIView beginAnimations:@"ResizeView" context:nil];
[UIView setAnimationDuration:animationDuration];
if(y > 0)
{
self.view.frame = CGRectMake(0, -y, self.view.frame.size.width, self.view.frame.size.height);
}
[UIView commitAnimations];
}
//键盘隐藏后将视图恢复到原始状态
-(void)keyboardWillHide:(NSNotification *)note
{
NSTimeInterval animationDuration = 0.30f;
[UIView beginAnimations:@"ResizeView" context:nil];
[UIView setAnimationDuration:animationDuration];
self.view.frame =CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
[UIView commitAnimations];
}
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