CODEWITHSUNDEEP
androidnative-android
Sanket Bhangale
Sanket Bhangale

Reputation: 174

When to use context.filesDir() and context.createDeviceProtectedStorageContext().filesDir

Recently we are seeing a few crashes for our app where exception is

Fatal Exception: java.io.FileNotFoundException /data/user/0/<package-id>/files/folder_name/file_name.jpg : open failed: ENOENT (No such file or directory)

Observations while debugging this issue

  1. val file = File("${context.filesDir}/$folderName") this is how app is creating a File object
  2. Before accessing this file path app is already calling mkdirs()
  3. In logs we are seeing below lines in the logs

Successfully queried cache dir: /data/user_de/0/<package_id>/code_cache

Setting cache dir: /data/user_de/0/<package_id>/code_cache

user_de: is something I could not understand why/from where it is coming up but when I explored more I got this context.createDeviceProtectedStorageContext().filesDir

But without this line of code My app was working all okay using context.filesDir

Is there anything I am missing here?

Edit:

This is the code that produces an exception (only on some devices for example SM-G398FN, SM-G525F, there are some instances where device model is same but we did not get exceptions things went fine we got all needed images)

CameraX implementation for capturing and storing images at context.filesDir

private fun takePhoto() {
   val imageCapture = imageCapture ?: return

   val imagesFolderFile = File(
      context.filesDir, 
      "$folderName${File.separator}$imagesFolderName"
   )

   val photoFile = File(
     imagesFolderFile, 
    "Images/image_timestamp.jpg"
   )

   photoFile.mkdirs()

   val outputOptions = 
     ImageCapture.OutputFileOptions.Builder(photoFile).build()

        
imageCapture.takePicture(
    outputOptions,
    ContextCompat.getMainExecutor(this),
    object : ImageCapture.OnImageSavedCallback {
           override fun onError(exc: ImageCaptureException) {
            // We are getting exceptions from this line
               Log.e(imageCaptureLogs, exc.message.toString())
               exc.printStackTrace()
           }

           override fun onImageSaved(output: 
               ImageCapture.OutputFileResults) {
               
           }
    }
}

Upvotes: 0

Views: 361

Answers (1)

josedlujan
josedlujan

Reputation: 5600

It looks like the issue might be related to the creation of the photo file and its parent directories. Specifically, there's an error in the way you are creating the directories for the photoFile.

Instead of using photoFile.mkdirs(), which creates both the file and its parent directories, you should create the parent directories first using File.mkdirs() and then create the file

Upvotes: 0

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