Turn off uiswitch from AppDelegate - ios

Question

I'm using LocalNotifications in my AppDelegate.m
If the user has the app open, the notification comes in the form of an alert.
The AppDelegate.m receives the clickedButtonAtIndex event. Regardless of the current view the user sees, the alert shows and everything works fine so far.
However, when receiving the event, I'd like to change the state of a UISwitch that exists on a UIVIewController.
EDIT: ADDED MORE CODE
My App is set up this way:
AppDelegate.m has this code:
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification{
// Called from the local notification above when the View button is clicked and the app reopens
//called when app is open vs in background
NSLog(#"got notification");
UIApplicationState state=[application applicationState];
if(state==UIApplicationStateActive){
UIAlertView *alert=[[UIAlertView alloc] initWithTitle:#"Notice"
message:notification.alertBody
delegate:self cancelButtonTitle:#"Sleep"
otherButtonTitles:#"Turn Off", nil];
[alert show];
}
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
NSLog(#"clicked button");
if(buttonIndex==1){
SettingsPage *setPage = [[SettingsPage alloc] initWithNibName:nil bundle:nil];
[setPage clickedAlert];
}
}
SettingsPage.m has this code:
#interface SettingsPage()
#property (weak, nonatomic) IBOutlet UISwitch *alarmSwitch;
#end
#implementation SettingsPage
-(IBAction)setAlarm{
//clear all notifications before setting a new one
[[UIApplication sharedApplication] cancelAllLocalNotifications];
//set a new LocalNotification
UILocalNotification *localNotification=localNotification =[[UILocalNotification alloc] init];
if(localNotification!=nil){
localNotification.fireDate=[NSDate dateWithTimeIntervalSinceNow:60]; //seconds
localNotification.timeZone=[NSTimeZone defaultTimeZone];
localNotification.alertBody=#"Reminder!";
localNotification.hasAction=YES; //fires didreceive event, opens app
localNotification.soundName=UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification]; }
}
-(void)clickedAlert{
NSLog(#"clicked alert");
[self.alarmSwitch setOn:NO animated:YES];
}
This has the desired effect of setting the "alarmSwitch" to "Off" (and thus canceling further notices), but the switch itself still shows in the view as "On" (green).
How can I flip the actual switch on the SettingsPage via code from my AppDelegate.m so that it behaves the same as if the user did it (i.e. changes it's visual and executes the connected method)?

Answer 1

As CrimsonChris mentioned, you seem to be making a new instance of SettingsPage every time, thus you're not seeing the change you want.
You could fire off an NSNotification,
[[NSNotificationCenter defaultCenter] postNotificationName:#"ClickedButtonAtIndex1" object:nil];
..and listen to it in your UIViewController.
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(handleIndex1Clicked) name:#"ClickedButtonAtIndex1" object:nil];
with your UIViewController doing what it needs to in the selector method:
-(void)handleIndex1Clicked
{
[self.setPage.alarmSwitch setOn:NO animated:YES];
}
PS. I'd suggest having extern const NSStrings holding your observer names.
Hope that helps!

Answer 2

It looks like you're getting a new SettingsPage and then setting its alarmSwitch to "Off". What you probably want is to get the existing SettingsPage instead of making a new one with alloc init.