Application crashes on pre 2.2 devices about tesseract-android-tools HOT 9 CLOSED

Hi,

The minimum sdk version needed is 2.2. If you try to deploy it on verison 
before 2.2. It crashes.

Hi, 

yes. I that is exactly the issue. still, more than 20 percent of active devices 
are pre 2.2 devices. 

Hence, the question is if there is any workaround to get it to work on pre 2.2 
platforms. So far, I narrowed it down to the gnustl_static library against 
which tesseract is compiled. 

Hi, using NDK version 6 solves the problem for Android phones pre 2.2. Good 
luck. Volker

Hi,

using NDK version 6 solves the problem for Android phones pre 2.2.
We tested it with a phone having Android version 2.1 and the OCR was working 
fine.

Best wishes,
Volker

Hi,

using NDK version 6 solves the problem for Android phones pre 2.2.
We tested it with a phone having Android version 2.1 and the OCR was working 
fine.

Best wishes,
Volker

Hi,

Was anyone able to successfully try this on Android Version 2.1 ? It works fine 
on 2.2 and not on 2.1...

Can you share the libraries and sample code for the version that works on 2.1 ?

Best regards,
vkasirajan

Hi vkasirajan,

If u read me comment above, you would have read that using the NDK version 6 
provided on the Android developer website will solve your problem. Just 
recompile the same libs you use with NDK 6 and it should run und 2.1 and below.
We did just that and for our project it is working. I am sorry that we can't 
provide any source code or libs.

Best regards,
Volker

Hi Volker,

Thank you for your reply. As you suggested, I tried to recompile the libs using 
the NDK 6. I get the following error:

Unable to dlopen(/data/data/com.android.mytest/lib/liblept.so): Cannot load 
library: link_image[1721]:    30 could not load needed library 'libjpeg.so' for 
'liblept.so' (load_library[1051]: Library 'libjpeg.so' not found)

I took libjnigraphics.so and tried to load it using System.loadLibrary. This 
gives "UnsatisfiedLinkError". I used the 2.1 emulator as well as a 2.1 device. 
Both gives me the same errors.

All the library files are properly copied into the respective paths...

Any help, will be greately appreciated. I have attached the logs...

Best regards,
vkasirajan

Removed support for APIs < 8.