While I do enjoy the vanilla Android Lollipop experience that comes with the Google Play Edition HTC One, I do miss the sweet camera that ships with Sense. Luckily, the people behind Liberty ROMs found a way to port that camera over and now we can enjoy the best of both worlds... well, sort of.
First off, this camera only works with M7s running Lollipop (M8 mod is in the works), and some features like tap-to-focus, split view, and Zoe are not currently working. However, you do get a clearer image and more filter options when compared to Google's own Camera app.
For compatibility reasons, you'll need to install the HTC Service Pack on your GPE device, if you haven't done so already. The app can be installed directly from the Google Play Store.
Unfortunately, the camera cannot be installed via Google Play or a standard APK. Instead, we will need to flash a ZIP through TWRP. If you have not unlocked your bootloader, get that done first and then download the attached ZIP file.
Once the download is complete, power off your device and then press and hold the power and volume down buttons until you see the bootloader menu. Select "Recovery mode" from that menu using the volume keys to scroll and power to select, then wait for TWRP to boot.
From TWRP's main menu, tap "Install" and select the ZIP you downloaded earlier, which should be in the Download folder, then swipe the slider along the bottom on the screen and hit the option to "Reboot System."
Even though the app installed successfully (you'll see two Camera apps in your app drawer), you will still need to clear its app data to get Pan 360 mode working. Do that by navigating to Settings -> Apps -> Camera and tapping "Clear Data."
Once the data is cleared, you will have an almost full-featured Sense camera alongside Google's camera in your app drawer. If you like the Sense camera, you can make it your default lock screen camera shortcut by tapping "Clear Defaults" in your old camera's "App Info" page.
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