<pre>
- (void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidHid) name:UIKeyboardWillHideNotification object:nil];
}
- (void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];
}
pragma mark - function
- (void)keyboardDidShow:(NSNotification *)notification{
NSValue *value = [[notification userInfo] valueForKey:UIKeyboardFrameEndUserInfoKey];
CGRect rect = [value CGRectValue];
UIView *firstResponder = [self.view.window performSelector:@selector(firstResponder)];
CGRect tfrect = [firstResponder.superview convertRect:firstResponder.frame toView:self.view.window];
if (tfrect.origin.y+self.view.frame.origin.y > rect.origin.y + firstResponder.frame.size.height) {
CGFloat movedistance = tfrect.origin.y - rect.origin.y +firstResponder.frame.size.height;
self.view.frame.origin.y -= movedistance;
}
}
-(void)keyboardDidHid{
self.view.frame.origin.y = 0;//注意iOS7之后非透明的导航栏设置成64
}
</pre>
