ios键盘回收,弹出

例如一个UIScrollView上有多上输入框，为了避免键盘遮盖整理了一下方法，大家可以借鉴一下。

- (void)dealloc

{

[[NSNotificationCenter defaultCenter]removeObserver:self name:UIKeyboardWillShowNotification object:nil];

[[NSNotificationCenter defaultCenter]removeObserver:self name:UIKeyboardWillHideNotification object:nil];

}// 释放

 

---

//增加监听，当键盘出现或改变时收出消息

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(keyboardWillShow:)

name:UIKeyboardWillShowNotification

object:nil];

//增加监听，当键退出时收出消息

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(keyboardWillHide:)

name:UIKeyboardWillHideNotification

object:nil];

---

- (void)keyboardWillShow:(NSNotification *)aNotification

{

//获取键盘的高度

NSDictionary *userInfo = [aNotification userInfo];

NSValue *value = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];

CGRect keyboardRect = [value CGRectValue];

CGFloat keyboardY = keyboardRect.origin.y;

CGRect frame = self.m_MoneyView.frame;

UIWindow *keyWindow = [[UIApplication sharedApplication] keyWindow];

UIView *first= [keyWindow performSelector:@selector(firstResponder)];

CGFloat firstMaxY = CGRectGetMaxY(first.frame);

// 获取当前控件在Window中的坐标

UIWindow * window=[[[UIApplication sharedApplication] delegate] window];

CGRect firstResponderBounds = [first convertRect:first.bounds toView:window];

CGFloat firstResponderH = CGRectGetHeight(first.bounds);

firstMaxY = firstResponderBounds.origin.y + firstResponderH;

if (firstMaxY > keyboardY) {

frame.origin.y -= (firstMaxY - keyboardY);}

self.m_MoneyView.frame = frame;}

//当键退出时调用

- (void)keyboardWillHide:(NSNotification *)aNotification

{

if (self.m_MoneyView.frame.origin.y != 0) {

self.m_BackView.frame = self.view.bounds;}

}

作者：天下只有一个
链接：https://www.jianshu.com/p/96c829ed78da
来源：简书
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