Breadcrumbs

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The actual breadcrumb view is not in SpringBoard or its' UIStatusBar. It is inside the application. It is inside UIStatusBarForegroundView and then inside a UIStatusBarBreadcrumbItemView.

The action is stored in the UIApplication (NOT SpringBoard!) [[%c(UIApplication) sharedApplication] _systemNavigationAction]

Disabling

  1. Hook UIKit's UIStatusBarForegroundStyleAttributes, and override canShowBreadcrumbs and its associated setter method
  2. Return NO for SBMainDisplaySceneManager's - (_Bool)_shouldBreadcrumbApplication:(SBWorkspaceApplication *)arg1 withTransitionContext:(id)arg2;

Resources

  1. Homemade Bread - an open source tweak that allows you to use the home button to activate a breadcrumb