Cannot open the epub file neither from assets neither from Raw

Hi all 😃 I really like the preview you have provided on Github, eager to start using it!

I was unfortunately unable to run it on the emulator:

`val folioReader = FolioReader.get()

            //
            //
            folioReader.openBook(R.raw.sensei_1_book_en)
            //folioReader.openBook("file://android_asset/sensei_1_book_en.epub")`

E/FileUtil: /storage/emulated/0/folioreader/sensei_1_book_en/sensei_1_book_en.epub: open failed: ENOENT (No such file or directory) E/Error: Could not generate container java.lang.Exception: Missing File at org.readium.r2.streamer.parser.EpubParser.generateContainerFrom(EpubParser.kt:52) at org.readium.r2.streamer.parser.EpubParser.parse(EpubParser.kt:71) at com.folioreader.ui.activity.FolioActivity.initBook(FolioActivity.kt:477) at com.folioreader.ui.activity.FolioActivity.setupBook(FolioActivity.kt:447) at com.folioreader.ui.activity.FolioActivity.onCreate(FolioActivity.kt:296) at android.app.Activity.performCreate(Activity.java:7783) at android.app.Activity.performCreate(Activity.java:7772) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1299) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3235) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3396) at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83) at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2009) at android.os.Handler.dispatchMessage(Handler.java:107) at android.os.Looper.loop(Looper.java:214) at android.app.ActivityThread.main(ActivityThread.java:7319) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:934) D/AppUtil: -> getAvailablePortNumber -> portNumber 8080 available E/FolioActivity: -> Failed to initialize book kotlin.KotlinNullPointerException at com.folioreader.ui.activity.FolioActivity.initBook(FolioActivity.kt:493) at com.folioreader.ui.activity.FolioActivity.setupBook(FolioActivity.kt:447) at com.folioreader.ui.activity.FolioActivity.onCreate(FolioActivity.kt:296) at android.app.Activity.performCreate(Activity.java:7783) at android.app.Activity.performCreate(Activity.java:7772) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1299) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3235) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3396) at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83) at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2009) at android.os.Handler.dispatchMessage(Handler.java:107) at android.os.Looper.loop(Looper.java:214) at android.app.ActivityThread.main(ActivityThread.java:7319) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:934)

[KishanViramgama]

Using Android 10 and targetSdkVersion 29 Environment.getExternalStorageDirectory() deprecated may be this issue to find your book link

AndroidManifest.xml file add this line work fine in android 10 and targetSdkVersion 29

<application
          .................
         android:requestLegacyExternalStorage="true">

[awaisabbasaa11]

If you have a similar problem on Android 11 then you can solve that checkout this comment