Setting iOS background/lockscreen image programmat

问题:

I'd like to be able to set the lockscreen background image programmatically. I'm aware that this is only possible for jailbroken iOS devices.

Here are some things that I've tried:

1. Place a LockBackground.png in /private/var/mobile/Library/SpringBoard/. This works but requires a hard respring. notify_post("com.apple.language.changed"); doesn't work for a soft respring.

2. Use class-dump to dump private methods of UIKit. UIKit in 4.2 used to have a method called + (void)setDesktopImageData:(id)fp8; but it appears to be missing in 4.3 and above.

Is there anything that I'm missing?

回答1:

I found this in the SpringBoard dump which I think will be of use to you:

In SBWallpaperView.h:

- (void)replaceWallpaperWithImage:(id)image;

And in SBUIController.h:

- (id)wallpaperView;

So you can do something like:

[(SBWallpaperView *)[SBUIController sharedInstance] wallpaperView] replaceWallpaperWithImage:anImage];

That's one way.

The other one I found was to use SBWallpaperView's + (void)noteWallpaperPreferencesChanged;, I'm not that sure about this one, but it seems like if you do what you did in the first thing you tried, and then use this instead of a respring, it might work.