Export to CSV fails

[brotzeller]

Step to reproduce

Click "Export to CSV" in the app menu.

Expected result

Data gets exported.

Actual result

Toast reading "Export failed" and no CSV file is generated.

Logcat has

MainActivity: Error saving file
MainActivity: java.io.FileNotFoundException: open failed: EACCES (Permission denied)
MainActivity:  at android.os.ParcelFileDescriptor.openInternal(ParcelFileDescriptor.java:313)
MainActivity:  at android.os.ParcelFileDescriptor.open(ParcelFileDescriptor.java:211)
MainActivity:  at android.content.ContentResolver.openAssetFileDescriptor(ContentResolver.java:1297)
MainActivity:  at android.content.ContentResolver.openOutputStream(ContentResolver.java:1062)
MainActivity:  at android.content.ContentResolver.openOutputStream(ContentResolver.java:1038)
MainActivity:  at com.github.muellerma.prepaidbalance.ui.MainActivity.writeToFileInDownloads(MainActivity.kt:163)
MainActivity:  at com.github.muellerma.prepaidbalance.ui.MainActivity.access$writeToFileInDownloads(MainActivity.kt:33)
MainActivity:  at com.github.muellerma.prepaidbalance.ui.MainActivity$exportAsCsv$1.invokeSuspend(MainActivity.kt:137)
MainActivity:  at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
MainActivity:  at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
MainActivity:  at kotlinx.coroutines.internal.LimitedDispatcher.run(LimitedDispatcher.kt:42)
MainActivity:  at kotlinx.coroutines.scheduling.TaskImpl.run(Tasks.kt:95)
MainActivity:  at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:570)
MainActivity:  at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
MainActivity:  at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:677)
MainActivity:  at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:664)

This is on a Samsung device running Android 9.

[mueller-ma]

I cannot reproduce this issue and when searching for this exception I only find solutions for Android >11.

[Ohior]

csv is just a .txt file, that separate data using "comma". If you want I can try and fix the issue

[mueller-ma]

Sure, you can give it a try. There's a button in the app that should create a csv file and export it to the "Downloads" folder on the device. But for some reason the export fails here.

[Ohior]

I made a PR for this fix. It works now.