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Google Vision Barcode Detection Library Not Installed on Some Devices

I am writing an application using the new Google Play Services application libraries for barcode detection.

Everything works fine on most devices I tested on, but one particular device refuses to install its own libraries (mentioned in this comment)

// Note: The first time that an app using the barcode or face API is installed on a // device, GMS will download a native libraries to the device in order to do detection. // Usually this completes before the app is run for the first time. But if that // download has not yet completed, then the above call will not detect any barcodes // and/or faces. // // isOperational() can be used to check if the required native libraries are currently // available. The detectors will automatically become operational once the library // downloads complete on device.

In device logs, I found the following:

 D/Vision (28899): Registration status barcode_armeabi_v7a.zip: There is not enough space to perform the download. D/Vision (28899): Download status barcode_armeabi_v7a.zip: There is not enough space to perform the download.

However, the device (HTC One M8 / Android 5.0.1 / Play Services 7.8.99 2134222-438) definitely has enough free space - 800 mb. I could free up more space on this particular device, but I can’t tell potentially tens of thousands of users to do this ...

Can any Google developer give an idea? This is mistake? How much free space does the device need? What mechanisms are used to determine if there is enough free space on the device?

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android google-play-services google-vision android-vision
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1 answer

The boot mechanism does not load when the device is considered "too low" on the disk.

We updated sample applications to include low-storage verification. For example:

https://github.com/googlesamples/android-vision/blob/master/visionSamples/photo-demo/app/src/main/java/com/google/android/gms/samples/vision/face/photo/PhotoViewerActivity. java # L91

Update:

Google Vision has reduced the free storage requirement to 500 MB in Google Play Services 8.4. See release notes here:

https://developers.google.com/vision/release-notes?hl=en

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