I want it once the user taps the 'otherbutton' it goes to my link.
But at the moment once the button is pressed it doesn't do anything.
Sorry im on my iPhone so I've used pastebin for the code
http://pastebin.com/fvgk87ih
Thanks alot
Conform your controller class to the UIAlertViewDelegate protocol.
#interface MyViewController : UIViewController <UIAlertViewDelegate>
Create the alert view with delegate set to self:
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Follow" message:#"me on twitter" delegate:self cancelButtonTitle:#"No" otherButtonTitles:#"Yes", nil];
[alert show];
[alert release];
Respond to the delegate method
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
if (buttonIndex != [alertView cancelButtonIndex]) {
// open url
}
}
The delegate of your UIAlertView must be set to the class (self in most cases) that's using it. Make sure your class calling the UIAlertView does conform to the UIAlertViewDelegate delegate.
You need to set the UIAlertView's delegate property to self instead of nil and implement the protocol in the header.
Header File:
#interface MyViewController : UIViewController <UIAlertViewDelegate>
In addition, check for the buttonIndex. Currently, (after performing the above), it will open the URL if any button is pressed.
- (void)alertView: (UIAlertView *)alertView clickedButtonAtIndex: (NSInteger)buttonIndex
{
if (buttonIndex != [alertView cancelButtonIndex])
{
//open url
}
}
Related
I create a class to call UIAlertview show on my screen. I write the UIAlert function in another class. Both these two classes are not my viewController class.
I use this UIAlert, which is a UITextfield inside, to store texts into a plist file.
here is the class to call UIAlert:
#import "Story.h"
#implementation Story
...
+ (void)stage1
{
AlertClass *pointer = [AlertClass new];
[pointer doAlert];
}
here is the class AlertClass.m file:
- (void)doAlert
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Title" message:#"Message" delegate:self cancelButtonTitle:#"Done" otherButtonTitles:nil];
alert.alertViewStyle = UIAlertViewStylePlainTextInput;
[alert show];
}
//this makes crash!
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
self.storyFlow.text = [alertView textFieldAtIndex:0].text;
}
Before I add UIAlertViewDelegate in the .h and override the method "clickedButtonAtIndex", it works great. However, I need to store some data from the UITextfield inside the alert view. I get crash and don't know the message it responds as following.
Please help me to solve this problem. Thanks.
[crash pic] https://dl.dropbox.com/u/47381923/crash.tiff
do an NSLog on the text you get back from the Alert View to see whether that is the crash or the subsequent 'self.storyFlow.text = ' is causing it. Perhaps self.storyFlow has not been created yet (with alloc/init)
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.
I added a tabbar controller on MainWindow.xib which is displaying 5 tabs and have the tab bar controller's delegate method: shouldSelectViewController in my app delegate which returns boolean value (YES or NO).
In this delegate method, I am showing an alert to the user (if user is going from tab 1 to any other tab). This alert contains 2 buttons: OK and Cancel.
If user clicks on OK, then I want the delegate method to return YES (so that user can go to other tabs) and if user has selected Cancel (in case he wants to stay on tab 1 only), then I want the method to return NO.
So, basically i want the shouldSelectViewController method to stop executing till the time alert is present on screen. Is there any way I can return a BOOL from my alert view's delegate method which may, in turn, be returned by shouldSelectViewController OR any threading solution which may be of use for this situation??
try this
in .h
UIViewController *tmpController;
in .m
-(BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController {
tmpController = viewController;
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Title" message:#"Message" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"OK", nil];
[alert show];
[alert release];
return NO;
}
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex) {
self.tabBarController.selectedViewController = tmpController;
}
}
I have multiple alert views in one view, and I use this code to detect which button was pressed:
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
NSString *title = [alertView buttonTitleAtIndex:buttonIndex];
if ([title isEqualToString:#"OK"]) {
//for one alert view
[passCode becomeFirstResponder];
} else if ([title isEqualToString:#" OK "]) {
//for another alert view, had to change "OK" to " OK "
[passCodeConfirm becomeFirstResponder];
}
}
Now since there are multiple alert views in one view that do different things, I have to trick the user into thinking "OK" and " OK " are the same thing. It works and looks fine, but it feels kind of messy. Surely there is another way to do this, such as making this specific to an alert view, and then making it specific to another. Do you know how I would do this? Thanks!
It would be more technical as well better that set unique tag for separate UIAlertView and identify it and access in its delegate method.
For example,
UIAlertView *alert=[[UIAlertView alloc]initWithTitle:#"Message" message:#"Are You Sure you want to Update?" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"Ok",nil];
[alert setTag:1];
[alert show];
[alert release];
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if(alertView.tag == 1)
{
// set your logic
}
}
Use tag property to uniquely identify each of the alertview u create.
Like this
myAlertView.tag = 1
Then in the clickedButtonAtIndex delegate method check which alertview's button was clicked using this tag property ,
if(alertView.tag==1)
I wouldn't use the titles to distinguish between the buttons. You'll run into problems when your app is localized or you decide to change the button titles, but forget to update them everywhere. Use the button indexes instead or if you only have one button in addition to a cancel button, use the cancelButtonIndex property of UIAlertView.
To distinguish between multiple alert views, you could use their tag property.
In your view, add a property for each alert view.
UIAlertView *myAlertType1;
UIAlertView *myAlertType2;
#property (nonatomic, retain) UIAlertView *myAlertType1;
#property (nonatomic, retain) UIAlertView *myAlertType2;
Create your alert using these properties
self.myAlertType1 = [[[UIAlertView alloc] initWithTitle: ... etc] autorelease];
[self.myAlertType1 show];
Then in your delegate method:
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (alertView == myAlertType1) {
// check the button types and add behaviour for this type of alert
} else if (alertView == myAlertType2 {
// check the button types and add behaviour for the second type of alert
}
}
Edit: Although the above works, iApple's suggestion of using the tag seems cleaner/simpler.
//in your .h file
UIAlertView* alert1;
UIAlertView* alert2;
//in your .m file
// when you are showing your alerts, use
[alert1 show]; //or
[alert2 show];
//and just check your alertview in the below method
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if(alertView == alert1)
{
//check its buttons
}
else //check other alert's btns
}
I am calling UIAlert with 2 buttons "Cancel" and "OK" in MyapplicationAppDelegate.m file , the alert is called but on tap of "Cancel" or "OK" button
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
method is not called.
I have added UIAlertViewDelegate in the MyapplicationAppDelegate.h file as below
#import UIKit/UIKit.h
#interface MyapplicationAppDelegate: NSObject UIApplicationDelegate,UIAlertViewDelegate
{
..
}
I want to know what else is required.
I am not sure whether its your typo while posting the question but you should call the delegate within <.. , .. >
#interface MyapplicationAppDelegate: NSObject <UIApplicationDelegate,UIAlertViewDelegate> { .. }
Here is sample code for UIAlertView
UIAlertView *myAlertView = [[UIAlertView alloc]initWithTitle:#""message:#"Your message goes here" delegate:self cancelButtonTitle:#"OK"otherButtonTitles:nil];
[myAlertView show];
[myAlertView release];
I am not sure myAlertView.delgate = self is the right method but i do set delegate with initWithTitle
For me,
#define appDelegate ((AppDelegate*)[UIApplication sharedApplication].delegate)
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:nil
message:#"Say Yes or NO?" delegate:appDelegate
cancelButtonTitle:#"No" otherButtonTitles:#"Yes", nil];
alertView.tag = 1;
[alertView show];
[alertView release];
do the trick!
Now its going into, -(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex; in AppDelegate file without adding,
#interface MyapplicationAppDelegate: NSObject <UIApplicationDelegate,UIAlertViewDelegate> { .. }