Add support for keyboard show/hide.

KLCPopup/KLCPopup.m

@@ -1036,22 +1036,54 @@ - (void)didChangeStatusBarOrientation:(NSNotification*)notification {
 #pragma mark - Subclassing
 
 - (void)willStartShowing {
-
+    [[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];
+
+    CGRect frame = _containerView.frame;
+    if (up) {
+        frame.origin.y -= keyboardEndFrame.size.height/2;
+    } else {
+        frame.origin.y += keyboardEndFrame.size.height/2;
+    }
+
+    [UIView beginAnimations:nil context:nil];
+    [UIView setAnimationDuration:animationDuration];
+    [UIView setAnimationCurve:animationCurve];
+    _containerView.frame = frame;
+    [UIView commitAnimations];
 }
 
 @end