I am trying to create a Today Extension (aka Widget) for my existing iOS 7+ app. In iOS Simulator everything works fine (most of the time) but on my devices the widget is empty - only the header/name is shown but no content.
I found several threads dealing with similar issues but they were all related to some init-problems in Swift apps. I am using Objectiv-c not Swift.
This is what I did:
- Added a new Today Extension target to my app. The corresponding scheme was created automatically as well.
- The issue also occurs when the unchanged default Widget is used. I only added the init-methodes to see if they are called properly. So the widget should show the default
Hello Worldlabel.
This is the code:
@interface TodayViewController () <NCWidgetProviding>
@end
@implementation TodayViewController
- (id)initWithCoder:(NSCoder *)aDecoder {
self = [super initWithCoder:aDecoder];
if (self)
NSLog(@"initWithCoder");
return self;
}
- (id)init {
self = [super init];
if (self)
NSLog(@"init");
return self;
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self)
NSLog(@"initWithNibName");
return self;
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)widgetPerformUpdateWithCompletionHandler:(void (^)(NCUpdateResult))completionHandler {
// Perform any setup necessary in order to update the view.
// If an error is encountered, use NCUpdateResultFailed
// If there's no update required, use NCUpdateResultNoData
// If there's an update, use NCUpdateResultNewData
completionHandler(NCUpdateResultNewData);
}
@end
When selecting the widget scheme and running it in simulator the widget is displayed correctly after selecting "Today" as container. Additionally initWithCoder is logged.
When running on device at first everything works as expected: The Today Screens comes up and the widgets are shown. My widget as well, but without any content.
Then Xcode shows the following message:
Lost connection to "Test Device" - Restore the connection to "Test Device" and run "com.example.MyApp.Widget" again, or if "com.example.MyApp.Widget" is still running, you can attach to it by selecting Debug > Attach to Process > com.example.MyApp.Widget.
Nothing is logged, I assume this is because of the lost connection. But why is the widget empty?
I looked into the device logs but there are no crashes. The problem is the same on my iPhone 6 (iOS 8.0) and iPad Air 2 (iOS 8.1)
Thank you very much!