How to check alertview values - iphone

This is my code :
self.myAlert = [[[UIAlertView alloc] initWithTitle:#"MNB" message:#"R u want to delete" delegate:self cancelButtonTitle:#"OK",nil otherButtonTitles:#"Cancel",nil] autorelease];
[myAlert show];
Here I would like to process if OK button click and also for cancel button, I would like to redirect the page if OK button clicked....I need the coding, IF condition statement when OK button clicked.....pls help me....


Read UIAlertViewDelegate Protocol Reference.
You can implement following methods.
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex


Just need to write the Delegate method of UIAlertView like this
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if(buttonIndex==1){
NSLog(#"Cancelled Clicked");
}
if(buttonIndex==0){
NSLog(#"O.K Clicked");
}
}
Will surely work :)


You can use UIAlertView delegate methods. For example
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
{
if(buttonIndex == 0) //your OK button
{
//Some code here
}
else if(buttonIndex == 1)
{
//Some other code
}
}

Related

How to create UIAlertView with multiple options?

I am trying to work out how I can use a UIAlertView to do more than one command.
Basically, in my ViewController, there is already an alertView, however I am now adding some storekit files, which, require there own alertView (to tell it whether to purchase the in-app or cancel etc.
Here is original alertView code;
- (void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
[alertView dismissWithClickedButtonIndex:0 animated:NO];
if (buttonIndex == 1) {
[g_GameUtils removeAlbumFolder:deleteIndex];
[g_GameUtils readAllData];
[g_GameUtils getAlbumFolderList];
[m_pTable reloadData];
}
}
And here is what I need also - they are both called alertView so I cannot use both like this, is there a way to combine them? Or is it better to call one of them alertView2 ? If so, how does it know which one to call for the particular alert?
Thanks in advance!
Chris
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 0){
//cancel button clicked. Do something here or nothing here
}
else{
//other button indexes clicked
[[MKStoreManager sharedManager] buyFeature:#"com.davis.apptoken.buy"];
}
}

Also you can use alertView.tag = 1; and alertView2.tag = 2; and add appropriate conditions to delegate:
if (alertView.tag == 1)
{
// First alert
}

how to move to next view controller after showing alertview

I have iPhone and I want that when AlertView is shown and user presses OK button after that view should be changed but it is not happening.
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Thank you" message:#"" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alert show];
[alert release];
return;
[self moveToView];
-(void)moveToView
{
MainViewController*targetController=[[MainViewController alloc]init];
[self.navigationController pushViewController:targetController animated:YES];
}

Please use UIAlertViewDelegate
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
// Code to move to next view
[self moveToView];
}
Note: Implement the UIAlertViewDelegate in your interface Declaration. Also while declaring UIAlertView set the delegate to self.
Hope this helps you.

Its simple. Implement UIAlertViewDelegate and put code there.
- (void) alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
{
MainViewController*targetController=[[MainViewController alloc]init];
[self.navigationController pushViewController:targetController animated:YES];
[targetController release];
}

in .h , implemented UIAlertViewDelegate
#interface ClassName : ParentClassName <UIAlertViewDelegate>
in .m , Add this method,
- (void)alertView:(UIAlertView *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
[self moveToView];
}

Implement alert view's delegate:
In your yourClass.h file:
#interface yourClass : UIViewController<UIAlertViewDelegate>{
}
#end
In your yourClass.m file:
#implementation yourClass
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex{
[self moveToView];
}
#end

Well , you are setting self as the delegate of the UIAlertView. That is correct and it's the first step you must take. After that go ahead and implement this method :
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
[self moveToView];
}
You can also make a switch statement here to see what button was pressed. But since you only have the OK button on the AlertView , it's not necessary.
Hope this helps.
Cheers!

Implement your code in - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex method and also add UIAlertViewDelegate in your class .h file.
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
NSLog(#"The index: %d",buttonIndex);
MainViewController*targetController=[[MainViewController alloc]init];
[self.navigationController pushViewController:targetController animated:YES];
[targetController release];
}
I think it will be helpful to you.

UIActionSheet from UIAlertView

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];
}

Linking UIActionSheet buttons with a current IBAction

I have got created a UIActionsheet programatically however I can't figure out how to link it to an existing IBAction.
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 0) {
self.label.text = #"Destructive Button Clicked";
}}
This is my code where i click on a button and I want it to link to the following IBAction that i have already got.
- (IBAction)doButton;
So, how would i go about linking this? Any help would be greatly appreciated.
Thanks

-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex: (NSInteger)buttonIndex {
if (buttonIndex == 0) {
self.label.text = #"Destructive Button Clicked";
[self doButton];
}
}

The best way to do it is to add a UIActionSheetDelegate to your class and call the action sheet in your IBAction.
.h file
#interface ViewController : UIViewController <UIActionSheetDelegate>
-(IBAction)doButton;
#end
.m file
-(IBAction)doButton {
UIActionSheet *doSheet = [[UIActionSheet alloc] initWithTitle:#"Your title" delegate:self cancelButtonTitle:#"Cancel" destructiveButtonTitle:nil otherButtonTitles:#"Button 0", #"Button 1", nil];
[doSheet showInView:self.view];
}
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex: (NSInteger)buttonIndex {
if (buttonIndex == 0) {
//Do Something
}
if(buttonIndex == 1) {
//Do Something else
}
}

UIAlertView easy way to tell if cancel button is selected

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...
}
}