[Nexus 6P Android Development] Kapak13:
EDIT- not sure if I got it right.. I just retried my steps on my own device and didn't get results. I'll keep tinkering and make edits to fix this. Sorry!!!!

Not sure exactly what Taker means about "coming back in the next 2-3 updates" but I'm assuming he means an option to change the lock screen wallpaper from within the settings.

If you want to change the lock screen wallpaper, you can manually do it. I've linked a screenshot with the root directory location so you can easily find it.

In the screen shot, you can see "keyguard_wallpaper.bak" (I added the .bak to make the lock screen clear/transparent because I had a theme change it without me toggling the wallpaper option..grrrr. So I went into the directory and renamed it to .bak to basically "remove" the wallpaper.)

I can't personally recall exactly if there was originally anything in the place of the .bak or if it was just "keyguard_wallpaper", but either way, the wallpaper is located there.

What to do to change it-

Find the directory and locate the keyguard_wallpaper file using a root explorer app.

Rename the keyguard_wallpaper with .bak at the very end, exactly as shown in my screenshot. This will save the original wallpaper and can easily be reverted back to the original if you rename and remove the .bak and reboot.

Grab any image you want the wallpaper to be and save it to your internal SD card.

Rename the saved image you want for he lockscreen to " keyguard_wallpaper" (make sure its exactly like the original file name was before you typed .bak)

Use the root file explorer to move the newly renamed image into the root directory that the original keyguard_wallpaper file is found.

Once the new image is moved, reboot your device.

Repeat these steps anytime you want to change the wallpaper for your loclscreen, but don't add a bunch in there, just one image at a time. (Not sure how your device would handle multiple keyguard wallpapers... Just safer and cleaner to do one image at a time)

If you wish to return to the default wallpaper, just delete the renamed image that you chose for the wallpaper and rename the "keyguard_wallpaper.bak" to "keyguard_wallpaper" (obviously without the quote marks"

Hope this helps

---------- Post added at 10:13 PM ---------- Previous post was at 10:12 PM ----------

---------- Post added at 10:31 PM ---------- Previous post was at 10:13 PM ----------

Enable Developer Mode

Go to Settings, and Tap on Developer Mode

Scroll Down and Enable Root for Apps Only

Download and Install ES File Explorer from the Google Play Store

Download Your Preferred Lock Screen Wallpaper to the Device

Open ES File Explorer and Swipe from the Left to Expand the Menu

Enable “Root Explorer” from the Tools Section and then Grant Root Access to ES File Explorer

Close the ES File Explorer Menu then Browse to the Download Folder(or where ever you downloaded the preferred lock screen wallpaper)

Press and Hold the Preferred Lock Screen Wallpaper and Tap on Rename(at the bottom)

Rename the Preferred Lock Screen Wallpaper to. . .

keyguard_wallpaper

Without a File Extension

Press and Hold the Preferred Lock Screen Wallpaper and Tap on Copy(at the bottom)

Browse to. . .

/data/system/users/0

Paste the Preferred Lock Screen Wallpaper into that Folder

^ copied directly from Android Explained

I don't see any discrepancies from what I had originally typed, but being on mobile, its tough to check between my original post and this new line of instructions.

Also, if it doesn't work as simply as stated, make sure the permissions match what the original keyguard wallpaper permissions are