ios - iOS7 how to programmatically show black screen for iPhone multitasking screen? -

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this question has answer here:

i'm working on medical app , prevent information user being saved onto multitasking screen.

some apps, bank of america show black screen app when user toggles multitasking mode (double tap home). is there away me app show black on multitasking screen, regardless of how app terminated?

maybe there xcode plist option exclude app's screenshot being saved multitasking menu?

will monitoring app delegate's lifestyle events , replacing topmost screen black enough guarantee no info being saved multitasking screen?

bank of america show black screen in middle below: enter image description here

according apples documentation can prevent snapshots being taken using ignoresnapshotonnextapplicationlaunch:

if feel snapshot cannot correctly reflect app’s user interface when app relaunched, can call [ignoresnapshotonnextapplicationlaunch] prevent snapshot image being taken.


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