CODEWITHSUNDEEP
ioscocoa-touchuialertview
Gary
Gary

Reputation: 933

Display UIAlertView BEFORE didFinishLaunchingWithOptions completes?

My app performs time-consuming one-time initialization in didFinishLaunchingWithOptions. I would like to display an alert, UIAlertView, to inform the user about this condition, but the alert never shows up until didFinishLaunchingWithOptions completes, even if shown with [alert performSelector:@selector(show) withObject:nil afterDelay:0.0];.

Moving one-time initialization to post- didFinishLaunchingWithOptions is not possible, due to the fact that didFinishLaunchingWithOptions has to set the main window's root view controller, which needs the initialization. Setting up a throw-away (dummy) root view controller in didFinishLaunchingWithOptions, covered or replaced later, seems somewhat... inelegant.

Ideas?

Upvotes: 1

Views: 633

Answers (1)

rtiago42
rtiago42

Reputation: 572

I've had this problem before, with one particular app.

The only way to solve it is with a "dummy" root view controller.

What I've done was to make a view controller with a UIImageView, add that UIImageView the launch image and an activity indicator.

Note that an activity indicator don't have to be a UIActivityIndicatorView; activity indicator is just a concept.

In my case I had a label and a progress bar. I would update the progress bar trough out the loading process, and change the label text to indicate the user what the app was doing.

Also, I advise you not to use the alert view; it's to intrusive.

Upvotes: 1

Related Questions