Add support for keyboard show/hide.

KLCPopup/KLCPopup.h

@@ -123,6 +123,9 @@ extern const KLCPopupLayout KLCPopupLayoutCenter;
 // If YES, then popup will get dismissed when content view is touched. default = NO.
 @property (nonatomic, assign) BOOL shouldDismissOnContentTouch;
 
+// If YES, then popup will move up or down when keyboard is on or off screen. default = NO.
+@property (nonatomic, assign) BOOL shouldHandleKeyboard;
+
 // Block gets called after show animation finishes. Be sure to use weak reference for popup within the block to avoid retain cycle.
 @property (nonatomic, copy) void (^didFinishShowingCompletion)();
 

KLCPopup/KLCPopup.m

@@ -1036,22 +1036,55 @@ - (void)didChangeStatusBarOrientation:(NSNotification*)notification {
 #pragma mark - Subclassing
 
 - (void)willStartShowing {
-
+    if (_shouldHandleKeyboard) {
+        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShowNotification:) name:UIKeyboardWillShowNotification object:nil];
+        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHideNotification:) name:UIKeyboardWillHideNotification object:nil];
+    }
 }
 
 
 - (void)didFinishShowing {
-
+    
 }
 
 
 - (void)willStartDismissing {
-
+    
 }
 
 
 - (void)didFinishDismissing {
-
+    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
+    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];
+}
+
+#pragma mark - Keyboard notification handlers
+
+- (void)keyboardWillShowNotification:(NSNotification *)notification {
+    [self moveContainerViewForKeyboard:notification up:YES];
+}
+
+- (void)keyboardWillHideNotification:(NSNotification *)notification {
+    [self moveContainerViewForKeyboard:notification up:NO];
+}
+
+- (void)moveContainerViewForKeyboard:(NSNotification *)notification up:(BOOL)up {
+    NSDictionary *userInfo = [notification userInfo];
+    NSTimeInterval animationDuration = [[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] floatValue];
+    UIViewAnimationCurve animationCurve = [[userInfo objectForKey:UIKeyboardAnimationCurveUserInfoKey] integerValue];
+    CGRect keyboardEndFrame = [userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
+
+    _containerView.center = CGPointMake(_containerView.superview.frame.size.width/2, _containerView.superview.frame.size.height/2);
+    CGRect frame = _containerView.frame;
+    if (up) {
+        frame.origin.y -= keyboardEndFrame.size.height/2;
+    }
+
+    [UIView beginAnimations:nil context:nil];
+    [UIView setAnimationDuration:animationDuration];
+    [UIView setAnimationCurve:animationCurve];
+    _containerView.frame = frame;
+    [UIView commitAnimations];
 }
 
 @end