pflammertsma/levelizer

Levelizer is an open source Android app that gives you haptic feedback when you're attempting to take an unlevel photo.

levelizer's Issues

Optional audio tone for left and right tilt

Preference to allow user to configure tolerance

Check for vibrator and accelerometer on start up and display errors if unavailable

Dynamic vibrator pattern depending on tilting angle

Landscape is not correctly detected on OnePlus 3

Portrait upright and upside down is detected correctly, but either orientation in landscape is not.

It may be possible that the OP3's y-axis is not oriented correctly inside the device.

Enabling accessibility service on Samsung Galaxy S II also enables TalkBack

For some reason, both Levelizer and TalkBack enable and disable in unison. This only appears to occur on a Samsung Galaxy S II (GT-I9100G).

Tapping on a "supported app" gives "Error retrieving information from server" in Google Play

Optional screen overlay for left and right tilt

Tilt sensor doesn't work if camera changes orientation

This is common on Samsung devices: the orientation of the device changes, causing gravity to point "upwards". This means that the x or y axis of the accelerometer has a negative velocity.

Option to add unsupported apps

Instructions dialog cropped in landscape

The instructions dialog is cropped vertically when the device is in landscape orientation, such that the text and continue button cannot be seen.

Preference to allow user to configure duration of haptic feedback

Keeps vibrating when screen is off

Open the camera, take a picture, turn off the screen without closing the camera app: Levelizer keeps giving haptic feedback.

Tested on Nexus 6P, Nougat preview.

Option to toggle

Disabling the AccessibilityService programmatically is a bit of a challenge, but my thoughts are:

• To disable: instruct CameraDetectionService to change its AccessibilityServiceInfo to only respond to its own package name.
• To enable: revert the AccessibilityServiceInfo to the current implementation.
• To apply the AccessibilityServiceInfo:
  • Invoke an accessibility event that the CameraDetectionService responds to.
  • Commit the new AccessibilityServiceInfo with setServiceInfo().

Widget to easily toggle

From Thanos Psaridis:

You should make this a widget so I can turn it on and off easily