Opening app from extension, properties only change the first time

Question

I have a today widget extension, and when I click a button it opens up the app. The first time I click the button and follow the code through, it uses a custom URL scheme to pass data through. That's parsed in the AppDelegate, and it figures out what data to populate the ViewController with. The ViewController is instantiated with a storyboard ID. Values are applied to one of the ViewController's properties, and then in the viewDidLoad the rest of the values are populated based on this passed in Value. This all works the first time.

However, if I hit the home button, open notification center, tap a button in my app and go through the whole process for a second time.. I step through the code as normal, all the values get set, but when the ViewController gets displayed, the values (such as UILabel) are the same as the first time, but they should have changed.

NSString *url = [NSString stringWithFormat:string ://%@", self.expanededTubeLine.lineName ];

NSExtensionContext *myExtension=[self extensionContext];
[myExtension openURL:[NSURL URLWithString:url] completionHandler:nil];

//

- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {

NSString *tubeLineName = [url host];

NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:@"group.koc.extensiontest"];

if ([defaults objectForKey:@"weekendData"]) {

    NSData *tubeData = [[defaults objectForKey:@"weekendData"] copy];

    TFLParser *parser = [[TFLParser alloc] initWithData:tubeData];
    [parser parseData];
    for (int x = 0; x < parser.delayedTubeLines.count; x++) {

        TubeLine *tl = [[TubeLine alloc] init];
        tl = [parser.delayedTubeLines objectAtIndex:x];
        if ([tl.lineName isEqualToString:tubeLineName]) {

            UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
            TubeLineViewController *tubeLineViewController = [storyboard instantiateViewControllerWithIdentifier:@"TubeLineViewController"];
            tubeLineViewController.tubeLine = tl;


            [self.window.rootViewController presentViewController:tubeLineViewController animated:YES completion:nil];
            return YES;
        }
    }
}

}

//

- (void)viewDidLoad {
    [super viewDidLoad];

    self.tubeLineName.text = self.tubeLine.lineName;
    self.tubeLineName.font = [UIFont openSansLightFontOfSize:18.0f];
    self.tubeLineName.textColor = [UIColor whiteColor];
    self.tubeLineName.backgroundColor = self.tubeLine.lineBackgroundUIColor;
    self.tubeLineName.layer.cornerRadius = 5;
    self.tubeLineName.clipsToBounds = YES;

    self.tubeLineMessage.font = [UIFont openSansLightFontOfSize:18.0f];
    self.tubeLineMessage.text = self.tubeLine.lineMessage;
    self.tubeLineMessage.textColor = [UIColor darkGrayColor];
}

score 4 · Accepted Answer · answered Oct 01 '14 at 05:50

It sounds like the View is loaded already so pop all the view controllers before pushing the widget based controller in handleOpenURL: function.

  [self.viewController.navController popToRootViewControllerAnimated:NO];
  if ([self.viewController presentedViewController]) {
      [self.viewController dismissViewControllerAnimated:NO completion:nil];
   }

Opening app from extension, properties only change the first time

1 Answers1