iOS app shows last shown view instead of splash screen- but only sometimes

Question

Sometimes when I open my app (either while resuming it after it was dormant for a while or while opening it after it has been \'quit\'), the splash screen, which basically j

Answer 1

Device os create snapshot screen image when application goes in background, here is path you can find in sandbox of application "AppData/Library/Caches/Snapshots/".

Here is a trick that you can prevent to show last screen of app, when you launch application.

   // Create subclass of UIImageView



      @interface SnapShotImageView :UIImageView


        @end

        @implementation SnapShotImageView :UIImageView


        @end

    //  Create function in appdelegate.m

      - (void)createSnapshotWhileApplicationGoesInBackground{

        NSString *splashImg = nil;
        if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad){
            splashImg= @"Default~ipad.png";
        }
        else {
            splashImg= @"Default~iphone.png";
        }
        UIWindow *win = [[UIApplication sharedApplication] keyWindow];
        SnapShotImageView *splash = [[SnapShotImageView alloc] initWithImage:[UIImage imageNamed:splashImg]];
        splash.frame = self.window.bounds;
        [win addSubview:splash];
    }


    - (void)removeSnapshotFromWindow{
        UIWindow *win = [[UIApplication sharedApplication] keyWindow];
        if ([[win subviews] count] > 1) {
            [NSThread sleepForTimeInterval:0.5];

            NSArray *array = [win subviews];

            [array enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {

                if ([obj isKindOfClass:[SnapShotImageView class]]) {
                     [obj removeFromSuperview];
                }
            }];
        }
    }


 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
       [self removeSnapshotFromWindow];
}

//Call this function Application delegate method this way..
- (void)applicationDidEnterBackground:(UIApplication *)application {
    [self createSnapshotWhileApplicationGoesInBackground];
}

- (void)applicationWillEnterForeground:(UIApplication *)application{
    [self removeSnapshotFromWindow];
}

- (void)applicationDidBecomeActive:(UIApplication *)application{
    [self removeSnapshotFromWindow];
}

here we creating snapshot of splash screen.. just adding splash screen in window. when application goes in background

and removeing snapshot when application comes in foreground