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Fix SYIOS-18 - displaying keyboard has nasty animation artefacts

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Yannick Le Collen
2014-12-16 08:25:27 +01:00
parent 20426959a5
commit f6344ac215
1 changed files with 51 additions and 10 deletions
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matrixConsole/ViewController/RoomViewController.m
+51 -10
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@@ -886,29 +886,70 @@ NSString *const kCmdResetUserPowerLevel = @"/deop";
}
#pragma mark - Keyboard handling
- (void)onKeyboardWillShow:(NSNotification *)notif {
// get the keyboard size
NSValue *rectVal = notif.userInfo[UIKeyboardFrameEndUserInfoKey];
CGRect endRect = rectVal.CGRectValue;
UIEdgeInsets insets = self.messagesTableView.contentInset;
// Handle portrait/landscape mode
insets.bottom = (endRect.origin.y == 0) ? endRect.size.width : endRect.size.height;
self.messagesTableView.contentInset = insets;
// bottom view offset
CGFloat nextBottomViewContanst = insets.bottom - [AppDelegate theDelegate].masterTabBarController.tabBar.frame.size.height;
[self scrollToBottomAnimated:YES];
// get the animation info
NSNumber *curveValue = [[notif userInfo] objectForKey:UIKeyboardAnimationCurveUserInfoKey];
UIViewAnimationCurve animationCurve = curveValue.intValue;
// Move up control view
// Don't forget the offset related to tabBar
_controlViewBottomConstraint.constant = insets.bottom - [AppDelegate theDelegate].masterTabBarController.tabBar.frame.size.height;
// the duration is ignored but it is better to define it
double animationDuration = [[[notif userInfo] objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue];
NSInteger rowNb = messages.count;
BOOL scrollToBottom = (rowNb && self.messagesTableView.contentSize.height);
[UIView animateWithDuration:animationDuration delay:0 options:UIViewAnimationOptionBeginFromCurrentState | (animationCurve << 16) animations:^{
// Move up control view
// Don't forget the offset related to tabBar
_controlViewBottomConstraint.constant = nextBottomViewContanst;
// reduce the tableview height
self.messagesTableView.contentInset = insets;
if (scrollToBottom)
{
[self.messagesTableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:(rowNb - 1) inSection:0] atScrollPosition:UITableViewScrollPositionBottom animated:NO];
}
// force to redraw the layout (else _controlViewBottomConstraint.constant will not be animated)
[self.view layoutIfNeeded];
} completion:^(BOOL finished) {
}];
}
- (void)onKeyboardWillHide:(NSNotification *)notif {
UIEdgeInsets insets = self.messagesTableView.contentInset;
insets.bottom = self.controlView.frame.size.height;
self.messagesTableView.contentInset = insets;
_controlViewBottomConstraint.constant = 0;
// get the animation info
NSNumber *curveValue = [[notif userInfo] objectForKey:UIKeyboardAnimationCurveUserInfoKey];
UIViewAnimationCurve animationCurve = curveValue.intValue;
// the duration is ignored but it is better to define it
double animationDuration = [[[notif userInfo] objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue];
// ani
[UIView animateWithDuration:animationDuration delay:0 options:UIViewAnimationOptionBeginFromCurrentState | (animationCurve << 16) animations:^{
UIEdgeInsets insets = self.messagesTableView.contentInset;
insets.bottom = self.controlView.frame.size.height;
self.messagesTableView.contentInset = insets;
_controlViewBottomConstraint.constant = 0;
[self.view layoutIfNeeded];
} completion:^(BOOL finished) {
}];
}
- (void)dismissKeyboard {