I'm trying to show a UIActionSheet when the user touches a button in a UIAlertView:
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 0)
{
UIActionSheet *actionSheet = ...
[actionSheet showFromTabBar:self.tabBarController.tabBar];
}
}
When the action sheet is shown the alert view is still on the screen behind the action sheet, and when I touch a button in the action sheet - the action sheet disappears but the whole screen is dimmed with the alert view still on and I can't dismiss it.
I tried several things, such as showing the action sheet after a short delay or dismissing the alert view programmatically, but nothing worked. In the best case (dismissing the alert view programmatically) the alert view did disappear after a somewhat-strange transition but I got a "wait-fence failed to receive reply" error in the log when it did.
How can I show an action sheet from an alert view in an orderly manner?
In this case, you should use
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
method rather than,
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
so your code wil be:
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 0)
{
UIActionSheet *actionSheet = ...
[actionSheet showFromTabBar:self.tabBarController.tabBar];
}
}
Thanks,
Just call dismissWithClickedButtonIndex:animated: method for UIAlertView
if (buttonIndex == 0)
{
[alertView dismissWithClickedButtonIndex:0 animated:YES];
UIActionSheet *actionSheet = ...
[actionSheet showFromTabBar:self.tabBarController.tabBar];
}
Related
For a specific server notification I am supposed to show an UIActionSheet. But problem here is when that event comes, at the same time if any UIAlertView already showing on any view controller, it make the UIActionSheet disabled( After pressed ok for alert view I am not able to select anything on view controller , view got disabled because of UIActionSheet). Anyone faced this kind of problem, Any idea how to solve it?
I have tried by dismissing alert view before showing action sheet, however which alert view do I need to dismiss as I have many alert view in many controller. All are local to that controllers. How to solve this problem.
Note:
Same problem won't come for iPod, as it wont allow to click ok before responding to UIActionSheet.
Take a Global Alert view named it as activeAlertView. Now when you show a alert view please check that alert view and then show and assign. Like
declare a property in .h and synthesize it
#property (nonatomic, retain) UIAlertView *activeAlertView;
then use the below code when try to show an alert.
if(self.activeAlertView){
[self.activeAlertView dismissWithClickedButtonIndex:0 animated:YES];
}
UIAlertView *localAlert = [[UIAlertView alloc] initWithTitle:#"Title" message:#"Your message" delegate:nil cancelButtonTitle:#"cancel" otherButtonTitles:nil, nil ];
[localAlert show];
self.activeAlertView = localAlert;
[localAlert release];
this way your activeAlertview will keep the current aler view's reference and before show the actionSheet dismiss the alert view.
For Identified which alert-view you must set Tag or alert-view.
Ex:-
alertviewName.tag=1;
Then you can check is there alert-view Open in Particular view-controller sub-views use bellow code like:-
- (BOOL) doesAlertViewExist {
for (UIView* view in yuorviewcontroller.view.subviews) {
BOOL alert = [view isKindOfClass:[UIAlertView class]];
if (alert)
{
return YES;
}
}
return NO;
}
After this method called you get BOOL value YES or NO If Yes then dismiss it using UIAlertview's Delegate:-
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex;
and put your Actionsheet appear code into didDismissWithButtonIndex method.
When the message comes, first check if there is an alert view.
Show the action sheet after the alert view is dismissed. In didDismiss... you can check a BOOL flag if you now have to show the action sheet or not.
In this case, you should use
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
method rather than,
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
so your code wil be:
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 0)
{
UIActionSheet *actionSheet = ...
[actionSheet showFromTabBar:self.tabBarController.tabBar];
}
}
Thanks
try this:
for (UIWindow* w in [UIApplication sharedApplication].windows)
{
for (NSObject* obj in w.subviews)
{
if ([obj isKindOfClass:[UIAlertView class]])
{
[(UIAlertView*)obj dismissWithClickedButtonIndex:[(UIAlertView*)obj
cancelButtonIndex] animated:YES];
}
}
}
am new to Objective C and iPhone Development.
Kindly tell me how can i add an action sheet within action sheet.
Like when i tap a button an action sheet is opened and then I clicked the first ButtonIndex of action another action sheet appears.
Kindly mention the complete code.
Thanks
Use the UIActionSheet delegate method:
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 0) { // Add an action sheet for one of these buttons -> maybe here if you want...
NSLog(#"You clicked the first button...");
UIActionSheet *popupQuery = [[UIActionSheet alloc] initWithTitle:#"Another action sheet"
delegate:self cancelButtonTitle:#"Cancel Button" destructiveButtonTitle:#"Destructive"
otherButtonTitles:#"Other Button 1", nil];
popupQuery.actionSheetStyle = UIActionSheetStyleBlackOpaque;
[popupQuery showInView:self.view];
[popupQuery release];
}
else {
NSLog(#"Dismissing action sheet");
}
}
All you want to do is dismiss the first UIActionSheet and show another UIActionSheet in it's place. In other words, you don't want to show a UIActionSheet within another UIActionSheet -- you want to show a UIActionSheet after a different UIActionSheet has been dismissed.
To find out when an action sheet is being dismissed, you should implement the UIActionSheetDelegate protocol. For example:
- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex {
// first action sheet is dismissed
// show a new action sheet here
}
I'd like to dismiss the whole modal view controller by tapping cancel on the UIAlertView that I implemented. The alert view asks the user if he wants to logout and if the user taps Yes, it'll dismiss the modal view controller.
How can I do this in Xcode?
Thanks!
You can start by checking out the documentation on uialertviewdelegate.
First you need to declare your class as the delegate for the uialertview and then implement the method to get the index of button that the user has clicked.
You can use these methods to check the user's choice
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
- (void)alertView:(UIAlertView *)alertView willDismissWithButtonIndex:(NSInteger)buttonIndex
Use alert view delegate method
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
[self dismissModalViewControllerAnimated:YES];
}
In case you have more than OK button, you need to mention button index, i.e.
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if(buttonIndex==0)
{
//Do something
}
if(buttonIndex==1)
{
[self dismissModalViewControllerAnimated:YES];
}
}
If you are using an alertView to dismiss a modal view controller,
Use didDismissWithButtonIndex:(NSInteger)buttonIndex instead of clickedButtonAtIndex:(NSInteger)buttonIndex
The latter causes a crash.
I know I've done this before but I just can't figure it out again.
What is the method I would use to see if a cancel button was pressed. I don't want to do it based on the button index. There is a way to do it, something like:
[alertView isCancelIndex:index];
Anyone know?
The UIAlertView has a property of cancel button index
#property(nonatomic) NSInteger cancelButtonIndex
Usage
[alertView cancelButtonIndex]
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == [alertView cancelButtonIndex]) {
NSLog(#"The cancel button was clicked for alertView");
}
// else do your stuff for the rest of the buttons (firstOtherButtonIndex, secondOtherButtonIndex, etc)
}
In the delegate of UIAlertView is the method
(void)alertView:(UIAlertView *)alertView
clickedButtonAtIndex:(NSInteger)buttonIndex
And then:
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
NSInteger cancelIndex = [alertView cancelButtonIndex];
if (cancelIndex != -1 && cancelIndex == buttonIndex)
{
// Do something...
}
}
I've got the problem that the UIAlertViewDelegate method - (void)alertViewCancel:(UIAlertView *)alertView is not called when I cancel a AlertView with it's cancel button.
Weird is that the delegate method - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex works perfectly.
Does anyone have an idea?
Thanks in advance
Sean
- (void)alertViewCancel:(UIAlertView *)alertView
{
if(![self aBooleanMethod])
{
exit(0);
}
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
//some code
}
I call this when a button is clicked:
- (void)ImagePickDone
{
UIAlertView *alertDone = [[UIAlertView alloc]
initWithTitle:#"Done"
message:#"Are u sure?"
delegate:self
cancelButtonTitle:#"Cancel"
otherButtonTitles: #"Yes", nil];
[alertDone show];
[alertDone release];
}
The alertViewCancel is used for when the system dismisses your alert view, not when the user presses the "Cancel" button. Quote from apple docs:
Optionally, you can implement the
alertViewCancel: method to take the
appropriate action when the system
cancels your alert view. If the
delegate does not implement this
method, the default behavior is to
simulate the user clicking the cancel
button and closing the view.
If you want to capture when the user presses the "Cancel" button you should use the clickedButtonAtIndex method and check that the index corresponds to the index for the cancel button. To obtain this index use:
index = alertDone.cancelButtonIndex;
You can handle the Cancel at the index 0 of this delegate:
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 0){
//cancel button clicked. Do something here.
}
else{
//other button indexes clicked
}
}
This can be improved in two ways. First, it only handles the case that the user actually clicked a button. It doesn't handle the situation that [myAlert dismissWithClickedButtonIndex:] is called, or that the alert is dismissed in some other way. Second, button 0 is not necessarily the cancel button. In an alert with two buttons, the left one is at index 0, and the right one is at index 1. If you changed the titles so that the right button says "Cancel", then button 1 is logically the Cancel button. Instead of "willDismiss" you can implement "didDismiss" which will be called after the dialog has disappeared and not before.
- (void)alertView:(UIAlertView *)alertView willDismissWithButtonIndex:(NSInteger)buttonIndex
{
if (buttonIndex == alertView.cancelButtonIndex)
{
//cancel button clicked. Do something here.
}
else
{
//other button indexes clicked
}
}