1、键通知
[[NSNotificationCenter defaultCenter] addObserver:self selector: @selector(keyboardWillChange:) name: UIKeyboardWillChangeFrameNotification object: nil];
2、键盘将要出现
-(void)keyboardWillChange:(NSNotification *)note {
//获取键盘的高度
CGFloat keyboardY = [[note.userInfo objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].origin.y;
CGFloat ty = keyboardY - KH;
[UIView animateWithDuration:0.3 animations:^{
self.bottomView.transform = CGAffineTransformMakeTranslation(0,ty);
}];
}
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