I want two alert views to show up only when the user opens my application for the first time -- the second to appear after the first is dismissed. I have it set up to only show the UIAlertViews when it has not been shown before and I do not need help with this. I need help figuring out how to display two alert views in a row when this is the case.
-(void) alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex does not work for me.
Here is the code I have -- remember this is in didFinishLaunchingWithOptions:
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
BOOL didFirstLaunch = [defaults boolForKey:#"DidFirstLaunch"];
if (!didFirstLaunch) {
[defaults setBool:YES forKey:#"DidFirstLaunch"];
UIAlertView *successAlert = //not important
[successAlert show];
[successAlert release];
//Somehow show second alert after the first is dismissed
}
I'm gonna post a very simple solution using GCD & blocks (GCD part is just in case the alert view is created on another thread then the main thread, callback should be safe to perform on the main thread). Remember, I just coded this in like 5 mins, so you definitely should work on improving the code. One thing that's a bit ugly is the delegate parameter that is overridden in my subclass. The interface of the subclass could be changed a bit to make it more obvious of what happens ...
Anyway, here goes ...
First create a subclass of UIAlertView, make it look somewhat like the following ...
#interface FSAlertView () <UIAlertViewDelegate>
#property (nonatomic, copy) void (^dismissHandler)(NSInteger buttonIndex);
#end
#implementation FSAlertView
#synthesize dismissHandler = _dismissHandler;
- (void)showWithDismissHandler:(void (^)(NSInteger buttonIndex))dismissHandler
{
self.dismissHandler = dismissHandler;
self.delegate = self;
[self show];
}
// Alert view delegate
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
{
dispatch_async(dispatch_get_main_queue(), ^ {
if (_dismissHandler)
{
_dismissHandler(buttonIndex);
}
});
}
Now in the app we can create alert views like the following ...
FSAlertView *alert1 = [[FSAlertView alloc] initWithTitle:#"Alert 1"
message:#"Some message"
delegate:nil
cancelButtonTitle:#"Cancel"
otherButtonTitles:#"Show 2nd Alert", nil];
[alert1 showWithDismissHandler:^ (NSInteger buttonIndex) {
NSLog(#"button pressed: %d", buttonIndex);
if (buttonIndex == 1)
{
UIAlertView *alert2 = [[UIAlertView alloc] initWithTitle:#"Alert 2"
message:#"Hi!"
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert2 show];
}
}];
If i understand your question correctly , then this may help:
UIAlertView *firstAlert = [[UIAlertView alloc] initWithTitle:#"Alert 1" message:nil delegate:self cancelButtonTitle:nil otherButtonTitles:nil, nil];
[firstAlert show];
[self performSelector:#selector(test:) withObject:firstAlert afterDelay:2];
[firstAlert release];
UIAlertView *secondAlert = [[UIAlertView alloc] initWithTitle:#"Alert 2" message:nil delegate:self cancelButtonTitle:nil otherButtonTitles:nil, nil];
[secondAlert show];
[self performSelector:#selector(test:) withObject:secondAlert afterDelay:2];
[secondAlert release];
-(void)test:(UIAlertView*)alert{
[alert dismissWithClickedButtonIndex:-1 animated:YES];
}
This will show two alert views one after the other.
NOTE: I am not sure if you are dismissing the alerts with cancel button so i am dismissing them automatically after few seconds.
Try this:
UIAlertView *firstAlert = [[UIAlertView alloc] initWithTitle:#"Title" message:#"Message" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"Ok", nil];
[firstAlert setTag:444];
[firstAlert show];
firstAlert = nil;
AlertView Delegate Method:
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
{
switch (alertView.tag) {
case 444:
{
//Cancel ButtonIndex = 0
if (buttonIndex == 1) {
UIAlertView *secondAlert = [[UIAlertView alloc] initWithTitle:#"Title 2" message:#"Message2" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"Dismiss", nil];
[secondAlert setTag:555];
[secondAlert show];
secondAlert = nil;
}
}
break;
case 555:
{
if (buttonIndex == 1) {
NSLog(#"Code Here");
}
}
break;
}
}
Related
Yes, I've already Googled this question and I've used the exact code, but that's still not working.
Here is my current Objective-C code:
- (IBAction)btnTemp:(id)sender
{
if (_deepSwitch.on == TRUE)
{
[self TempCleaner];
_progress.progress += 1;
}
UIAlertView *cleaned = [[UIAlertView alloc] initWithTitle:#"Done!" message:#"Your device is now clean. Restarting SpringBoard." delegate:nil cancelButtonTitle:#"Ok" otherButtonTitles:nil, nil];
[cleaned show];
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == [alertView cancelButtonIndex]) {
NSLog(#"clicked");
}
}
Why isn't this working? I've tried buttonIndex 0, and cancel button!
Set the alert view's delegate to self
UIAlertView *cleaned = [[UIAlertView alloc] initWithTitle:#"Done!" message:#"Your device is now clean. Restarting SpringBoard." delegate:self cancelButtonTitle:#"Ok" otherButtonTitles:nil, nil];
Also, make sure that the class from which you are presenting the alert view declares the UIAlertViewDelegate protocol
//YourClass.h
#interface YourClass : SuperClass <UIAlertViewDelegate>
I have this code currently for my UIAlertView:
if (counter > highscore) { //if highscore is achieved show an alert
highscore = counter;
NSString *nssHighscore = [NSString stringWithFormat:#"%i", highscore];
UIAlertView *alert = [[UIAlertView alloc]
initWithTitle:#"Congratulations, You Got A New High Score!!"
message:nssHighscore
delegate:nil
cancelButtonTitle:#"Ok"
otherButtonTitles:#"Share"];
[alert show];
}
I want to run this code when the 'Share' button is clicked on the Alert
- (IBAction)PostToFacebook:(id)sender {
NSString *nssHighscore = [NSString stringWithFormat:#"%i", highscore];
mySLComposerSheet = [[SLComposeViewController alloc] init];
mySLComposerSheet = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook];
[mySLComposerSheet setInitialText:[NSString stringWithFormat:#"My New Highscore is %d - Try to Beat it!, highscore]];
[self presentViewController:mySLComposerSheet animated:YES completion:nil];
}
So far I've been following guides and questions on stack overflow but can't get it working.
Thanks
You'll want to use the alertView:clickedButtonAtIndex: delegate method, and check that the index matches [alertView firstOtherButtonIndex].
Like this:
UIAlertView *alert = [[UIAlertView alloc]
initWithTitle:#"Congratulations, You Got A New High Score!!"
message:nssHighscore
delegate:self // <== changed from nil to self
cancelButtonTitle:#"Ok"
otherButtonTitles:#"Share"];
And in the same class:
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == [alertView firstOtherButtonIndex]) {
[self PostToFacebook:self];
}
}
I have troubles when I perform a UIAlertView, (the alert view works fine) but... i cannot perform the segue to another window... the type of transition is modal... any help?
if([txtPeticion hasText] )
{
alertaVeladora = [[UIAlertView alloc]
initWithTitle:#"Santuario Virtual"
message:#"Gracias por compartir tu veladora!"
delegate:self
cancelButtonTitle:nil
otherButtonTitles:nil];
[alertaVeladora show];
[self postMessage:txtPeticion.text shareTw:shareTwitter shareFb:shareFacebook withEmail:email];
txtPeticion.text = #"";
[self performSelector:#selector(dismissAlert:) withObject:alertaVeladora afterDelay:1.0f];
}
If I understand correctly, you want to perform the segue when the user presses the dismiss button on the AlertView? To perform an action when the button has been pressed, use the following code:
if([txtPeticion hasText] )
{
alertaVeladora = [[UIAlertView alloc]
initWithTitle:#"Santuario Virtual"
message:#"Gracias por compartir tu veladora!"
delegate:self
cancelButtonTitle:nil
otherButtonTitles:nil];
[alertaVeladora show];
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if(alertView.tag == 1)
{
// Perform Segue
[self performSegueWithIdentifier: #"MySegue" sender: self];
}
}
I want to show multiple messages on iOS one by one, but the problem is that showing UIAlertView is non-blocking. I tried to handle alert closing with clickedButtonAtIndex and show same alert inside. Here is some code:
#interface ViewController : UIViewController <UIAlertViewDelegate>
...
#property UIAlertView *alert;
...
#end
...
[alert show]; //somewhere in code, starts chain of messages
...
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
// Some changes in alert object
[alert show];
}
I would have one UIAlertView and change its message on button click... Maybe increment its tag as well
try overriding
-(void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
instead of clickedButtonAtIndex
I prefer to set tags on the alert views:
#define ALERT_1 1
#define ALERT_2 2
...
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:...];
alert.tag = ALERT_1;
[alert show]; //somewhere in code, starts chain of messages
...
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
switch (alertView.tag) {
case ALERT_1: {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:...];
alert.tag = ALERT_2;
[alert show];
} break;
case ALERT_2: {
....
} break;
}
}
This way you don't have to use variables for the alert views.
You need one property for each alert view you want to show. In the delegate function check which one finished and start the next one:
#interface ViewController : UIViewController <UIAlertViewDelegate>
...
#property UIAlertView *alert1;
#property UIAlertView *alert2;
#property UIAlertView *alert3;
#end
...
alert1 = [[UIAlertView alloc] initWithTitle:...];
[alert1 show]; //somewhere in code, starts chain of messages
...
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (alertView == alert1) {
alert2 = [[UIAlertView alloc] initWithTitle:...];
[alert2 show];
} else if (alertView == alert2) {
alert3 = [[UIAlertView alloc] initWithTitle:...];
[alert3 show];
}
}
Hi guys i have this i IBAction linked to a button:
- (IBAction)showCurl:(id)sender {
alert1 = [[UIAlertView alloc]initWithTitle:#"Loading" message:nil delegate:self cancelButtonTitle:nil otherButtonTitles:nil];
[alert1 show];
}
and a clickedButtonIndex to auto run but somehow it doesn't load SecondViewController:
#pragma mark UIAlertView
- (void)alertView:(UIAlertView *)alert1 clickedButtonAtIndex:(NSInteger)buttonIndex {
if(buttonIndex == 0){
SecondViewController *sampleView = [[SecondController alloc] init];
[sampleView setModalTransitionStyle:UIModalTransitionStylePartialCurl];
[self presentModalViewController:sampleView animated:YES];
}
else{
// Cancel prompt
}
}
Am i missing something here?
If you don’t give the alert view some button titles, there won’t be any buttons to tap on and that delegate method won’t get called.
- (IBAction)showCurl:(id)sender {
alert1 = [[UIAlertView alloc] initWithTitle:#"Loading" message:nil delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alert1 show];
}
Your code doesn't show a button
alert1 = [[UIAlertView alloc]initWithTitle:#"Loading" message:nil delegate:self cancelButtonTitle:**nil** otherButtonTitles:**nil**];
You pass nil as cancelButtonTitle AND nil as otherbuttonTitles, you should at least have one button title set.