Is it possible to show alert in `clickedButtonAtIndex` method of alertview - iphone

Question

In delegate method ofUIalerview I am trying to show another alert after finishing the process on clicking button index. Is it possible to do so? Also I want to call a method on button click of alert. How can I do that?
I am trying in this way. Is is correct?
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if(buttonIndex == 1)
{
inappPurchaseViewController = [[InAppPurchaseViewController alloc] init];
[inappPurchaseViewController Upgrade:nil];
[inappPurchaseViewController release];
UIAlertView *purchasedone = [[UIAlertView alloc] initWithTitle:#"Enable Ads" message:#"You can Enable Ads from Settings Option" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[purchasedone show];
[purchasedone release];
}
}

Answer 1

You want to use tags for your UIAlertViews
Assigning tags
UIAlertView *firstAlert = [[UIAlertView alloc] initWithTitle:#"Do something first" message:#"This is the first UIAlertView" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[firstAlert setTag: 0];
[firstAlert show];
[firstAlert release];
Handling those tags
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
switch (alertView.tag)
{
case 0: /* firstAlert */
{
if(buttonIndex == 1)
{
inappPurchaseViewController = [[InAppPurchaseViewController alloc] init];
[inappPurchaseViewController Upgrade:nil];
[inappPurchaseViewController release];
UIAlertView *purchaseDone = [[UIAlertView alloc] initWithTitle:#"Enable Ads" message:#"You can Enable Ads from Settings Option" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[purchaseDone setTag: 1];
[purchaseDone show];
[purchaseDone release];
}
}
break;
case 1: /* purchaseDone */
{
/* purchaseDone uialertview was triggered, handle it here. */
}
break;
}
}

Answer 2

UIAlertView *a = [[UIAlertView alloc] initWithTitle:#"a" message:#"b" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:#"ca",nil];
[a show];
[a release];
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if(buttonIndex == 1)
{
UIAlertView *purchasedone = [[UIAlertView alloc] initWithTitle:#"Enable Ads" message:#"You can Enable Ads from Settings Option" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
purchasedone.tag = 55;
[purchasedone show];
[purchasedone release];
}
if([alertView tag] == 55 && buttonIndex == 0)
{
UIAlertView *purchasedone = [[UIAlertView alloc] initWithTitle:#"New Alert" message:#"New Alert Message" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[purchasedone show];
[purchasedone release];
}
}
write UIAlertViewDelegate in .h file.

Answer 3

put the following line on top of your .m file
`#define PREVIOUS_ALERT 101`
`#define NEW_ALERT 102`
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
//you need to make a condition here for checking the alert else it will go into infinite loom of showing alert after alert
//you can do it by setting tag to alert something like this
if(alertView.tag == PREVIOUS_ALERT) //sot the previous alert tag to this where you created it
{
if(buttonIndex == 1)
{
inappPurchaseViewController = [[InAppPurchaseViewController alloc] init];
[inappPurchaseViewController Upgrade:nil];
[inappPurchaseViewController release];
UIAlertView *purchasedone = [[UIAlertView alloc] initWithTitle:#"Enable Ads" message:#"You can Enable Ads from Settings Option" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
purchasedone.tag = NEW_ALERT;
[purchasedone show];
[purchasedone release];
}
}
else
{
//code for your second alert
}
}