File not found

[billygl]

I used

        File file = new File(modelProto);
        if(file.exists())Log.e("DEVX", "ok.");
        else Log.e("DEVX", "NOT");

And I watched ok in Android Log Monitor. It means Android can find the file. It exists.
But I got

F1107 18:01:28.624402 16834 io.cpp:36] Check failed: fd != -1 (-1 vs. -1) File not found: /storage/emulated/0/Download/caffe_mobile/bvlc_reference_caffenet/deploy.prototxt

when the execution arrived to
caffeMobile.loadModel(modelProto, modelBinary);

It means that Android find the file but io.cpp can't find the file.

I doubled checked the path and I added
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
And I updated the code using the external storage SD card

pull /storage/278E-8716/caffe_mobile/bvlc_reference_caffenet/deploy.prototxt

but I can't solve this issue.

I have

android {
compileSdkVersion 23
buildToolsVersion "22.0.1"
defaultConfig {
applicationId "com.sh1r0.caffe_android_demo"
minSdkVersion 15
targetSdkVersion 23
versionName "1.0"
}

And I don't know what is the problem.
Please, help

[sh1r0]

@billygl
First, /storage/emulated/0/Download/caffe_mobile/bvlc_reference_caffenet/deploy.prototxt does not match /storage/278E-8716/caffe_mobile/bvlc_reference_caffenet/deploy.prototxt. And AFAIW, /emulated/0 is usually the primary external storage rather than the secondary one (i.e., external sd card) [1]. Please check the absolute path of your files.

[1] http://stackoverflow.com/a/29404440

[billygl]

Yes, I checked both locations. For that reason,

1. First, I tried with one path
   It didn't work so
2. I tried the other path. I thought it was caused by permissions.

Sorry for the confusion. I updated the post

[sh1r0]

@billygl Is your phone on android 6 (marshmallow)?

[billygl]

Yes Android 6.0.1. Galaxy S7 Edge.

[Uchanka]

Maybe you should try and modify its Java source code?
The file paths are designated in its source code, both .prototxt and weight file. Push these files to somewhere you have access to.
Try enabling developer mode if you have to.
Also be advised be careful with that S7
May cause massive explosion

[billygl]

Yes. I pushed these files to 2 locations and I changed the source code for theses locations in different tests but I highlight that

    File file = new File(modelProto);
    if(file.exists())Log.e("test", "ok.");

It works, but
caffeMobile.loadModel(modelProto, modelBinary);
doesn't work

[sh1r0]

@billygl I found the problem, it's about runtime permission control introduced in android 6. Here's the workaround: manually grant the app with storage permission.

[billygl]

Excellent!
Thanks