OCR, FaceRecognition, BarcodeScanner using Google Vision

wes58

Active Member
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It is good that you found this issue.
You can find more information about it on https://stackoverflow.com/questions...tion-file-storage-emulated-0-test-txt-exposed
You have to use FileProvider.
I had a look at the link on the first page of this thread to the github project that this library is based on, and noticed that the author updated his github project to use FileProvider.
I look at the code (of OCR only) and noticed only one change in BuildPicture function:
B4X:
private void takePicture() {
        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        File photo = new File(Environment.getExternalStorageDirectory(), "picture.jpg");
        imageUri = FileProvider.getUriForFile(MainActivity.this, BuildConfig.APPLICATION_ID + ".provider", photo);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
        startActivityForResult(intent, PHOTO_REQUEST);
}

If DonManfred had his original code he could change it, in this function like this:
B4X:
if (Build.VERSION.SDK_INT > 24){
    imageUri = FileProvider.getUriForFile(BA.applicationContext, BA.applicationContext.getPackageName() + ".provider", photo);
}
else{
    imageUri = Uri.fromFile(photo);
}
And the following would have to be added to the manifest:
B4X:
AddApplicationText(<provider
   android:name="android.support.v4.content.FileProvider"
   android:authorities="$PACKAGE$.provider"
   android:exported="false"
   android:grantUriPermissions="true">
   <meta-data
      android:name="android.support.FILE_PROVIDER_PATHS"
      android:resource="@xml/provider_paths"/>
  </provider>
)
CreateResource(xml, provider_paths.xml,
   <external-path name="external_files" path="." />
)
Or you could do it yourself using Johan's library based on the same github project https://www.b4x.com/android/forum/threads/ocr-mobilevisiontext.82910/#content
He has provided source code for his library.
 

Schakalaka

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Longtime User
hello. i have problem with the example file.
It crash when i click on the button.
B4X:
android.os.FileUriExposedException: file:///storage/9016-4EF8/picture.jpg exposed beyond app through ClipData.Item.getUri()

After code scan, how can i do copy and paste in a edittext for search?
 

okadakadasam

New Member

hello, can you help me, this test program I have the following error:

the line with the error is the example itself

Logger conectado a: motorola moto g(6) plus
--------- beginning of main
*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
Error occurred on line: 72 (Main)
android.os.FileUriExposedException: file:///storage/emulated/0/picture.jpg exposed beyond app through ClipData.Item.getUri()
at android.os.StrictMode.onFileUriExposed(StrictMode.java:1993)
at android.net.Uri.checkFileUriExposed(Uri.java:2379)
at android.content.ClipData.prepareToLeaveProcess(ClipData.java:963)
at android.content.Intent.prepareToLeaveProcess(Intent.java:10227)
at android.content.Intent.prepareToLeaveProcess(Intent.java:10212)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1736)
at android.app.Activity.startActivityForResult(Activity.java:4594)
at android.app.Activity.startActivityForResult(Activity.java:4552)
at anywheresoftware.b4a.BA.startActivityForResult(BA.java:542)
at de.donmanfred.FaceDetectorwrapper.takePicture(FaceDetectorwrapper.java:242)
at b4a.example.main._btnfacedetect_click(main.java:445)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:348)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:180)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:176)
at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:80)
at android.view.View.performClick(View.java:6600)
at android.view.View.performClickInternal(View.java:6577)
at android.view.View.access$3100(View.java:781)
at android.view.View$PerformClick.run(View.java:25912)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6923)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:870)
 

DonManfred

Expert
Licensed User
Longtime User
android.os.FileUriExposedException: file:///storage/emulated/0/picture.jpg exposed beyond app through ClipData.Item.getUri()

You need to use FileProvider. file-Uris are not allowed anymore.

Please create a new thread in the questionsforum.

Posting to existing threads is a mistake.
 

marvin944

Member
Licensed User
Longtime User
Hello. Are there any updates for this lib? I cannot get it to work. IsOperational keeps returning FALSE...
 
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