Google Mobile Vision library not downloading
I am trying to implement the Google Mobile Vision TextRecogniser API into my app, to read text off a given Image. When I try to use the feature, I get this error:
W/DynamiteModule: Local module descriptor class for com.google.android.gms.vision.dynamite not found.
I/DynamiteModule: Considering local module com.google.android.gms.vision.dynamite:0 and remote module com.google.android.gms.vision.dynamite:801
I/DynamiteModule: Selected remote version of com.google.android.gms.vision.dynamite, version >= 801
W/System: ClassLoader referenced unknown path: /data/user_de/0/com.google.android.gms/app_chimera/m/00000005/n/arm64-v8a
D/ApplicationLoaders: ignored Vulkan layer search path /data/app/com.google.android.gms-1/lib/arm64:/system/fake-libs64:/data/app/com.google.android.gms-1/base.apk!/lib/arm64-v8a for namespace 0x7a2e8c60f0
I/Vision: Loading libocr library
I/Vision: libocr load status: false
I/TextRecognizerCreatorImpl: Requesting download for native text recognizer
W/TextNativeHandle: Native handle not yet available. Reverting to no-op handle.
Meaning, I believe, that the library wasnt downloaded to the phone.
I have troubleshooted for common error sources, including missing internet connection, lack of memory, missing dependencies, rebooting the phone, updating Google play services, waiting a while etc. Google repository and Play services are also updated in Android studio.
Yet, I still get the same error, even when trying my App on different devices.
Answer
I believe that the download is performed by the Google Play Service App. The Libraries are downloaded as a zip file in the folder
/data/data/com.google.android.gms/cache/downloadservice
and are extracted to
/data/data/com.google.android.gms/files/com.google.android.gms.vision
and our app always check for the library in path
06-02 22:43:53.379 30258-30419/pzy64.searchbot I/Vision: Loading library libocr.so
which shows the error if the files are absent
06-02 22:43:53.475 30258-30419/pzy64.searchbot I/Vision: libocr.so library load status: false
otherwise
06-03 09:42:33.372 23451-24679/pzy64.searchbot I/Vision: libocr.so library load status: true
After download, In my case (ARM) the folder size of
/data/data/com.google.android.gms/files/com.google.android.gms.vision
is around 5MB.(So the file downloaded is less than this size, The size may vary for different architecture .It took more time to download in my Asus Phone (x86)).
See my Logcat - (filter using 'Vision').
06-02 22:45:45.489 14970-31705/? I/Vision: Registration status ocr_armeabi_v7a.zip: The download is in progress.
06-02 22:45:45.542 14970-31705/? I/Vision: Download status ocr_armeabi_v7a.zip: The download is in progress.
06-02 22:43:53.379 30258-30419/pzy64.searchbot I/Vision: Loading library libocr.so
06-02 22:43:53.387 30258-30419/pzy64.searchbot I/Vision: libocr.so library load status: false
06-02 22:43:53.410 30258-30419/pzy64.searchbot I/Vision: Loading library libocr.so
06-02 22:43:53.411 30258-30419/pzy64.searchbot I/Vision: libocr.so library load status: false
06-02 22:43:53.475 30258-30419/pzy64.searchbot I/Vision: Loading library libocr.so
06-02 22:43:53.475 30258-30419/pzy64.searchbot I/Vision: libocr.so library load status: false
................... ..............
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06-02 22:51:08.364 14970-3424/? I/Vision: Finished download ocr_armeabi_v7a.zip
06-02 22:51:08.421 14970-3424/? I/Vision: Unzipping /data/data/com.google.android.gms/cache/downloadservice/ocr_armeabi_v7a.zip to /data/data/com.google.android.gms/files/com.google.android.gms.vision/ocr
06-02 22:51:08.645 14970-3424/? I/Vision: Time to download ocr: 436558
06-02 22:51:09.142 3303-3489/pzy64.searchbot I/Vision: Loading library libocr.so
06-02 22:51:09.149 3303-3489/pzy64.searchbot I/Vision: libocr.so library load status: true
06-02 22:51:09.149 3303-3489/pzy64.searchbot I/Vision: Reading ocr models from /data/data/com.google.android.gms/files/com.google.android.gms.vision/ocr/data/models