Java RandomAccessFile A resource was acquired at attached stack trace but never released

Question

OK this is a weird one.

I have an Android app which keeps a buffer of everything the user has typed on their keyboards in a file (buffered.log). Everything works perfectly, except in the weird situation where the clients install the app on somebodies phone that they have previously installed it on.

The app then throws this error:

03 20:20:34.678 22741-22749/com.menny.android.anysoftkeyboard E/StrictMode: A resource was acquired at attached stack trace but never released. See java.io.Closeable for information on avoiding resource leaks.
                                                                             java.lang.Throwable: Explicit termination method 'close' not called
at dalvik.system.CloseGuard.open(CloseGuard.java:180)
at java.io.RandomAccessFile.<init>(RandomAccessFile.java:127)
at com.radicalninja.logger.FlushableCipherOutputStream.<init>(FlushableCipherOutputStream.java:50)
at com.radicalninja.logger.CipherUtils.flushableEncryptedBufferedWriter(CipherUtils.java:31)
at com.radicalninja.logger.FileWriter.openFileWriter(FileWriter.java:41)
at com.radicalninja.logger.FileWriter.<init>(FileWriter.java:30)
at com.radicalninja.logger.FileWriter.<init>(FileWriter.java:0)
at com.radicalninja.logger.LogManager.openExternalPublicStorage(LogManager.java:161)
at com.radicalninja.logger.LogManager.createFileWriter(LogManager.java:115)
at com.radicalninja.logger.LogFileController.openLogFile(LogFileController.java:18)
at com.radicalninja.logger.LogFileController.<init>(LogFileController.java:12)
at com.radicalninja.logger.Buffer.<init>(Buffer.java:0)
at com.radicalninja.logger.WordBuffer.<init>(WordBuffer.java:0)
at com.anysoftkeyboard.AnySoftKeyboard.onCreate(AnySoftKeyboard.java:328)
at android.app.ActivityThread.handleCreateService(ActivityThread.java:3808)
at android.app.ActivityThread.access$2100(ActivityThread.java:222)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1883)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:158)
at android.app.ActivityThread.main(ActivityThread.java:7229)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)

My question is: how can i check if a random access file was not closed properly, and close it before the app tries to create the same new RandomAccessFile the previous install was already using?

Answer 1

OK this is my cludge fix for this issue:

Create new file with the same path when app first opens, and then delete it.

Seems to work, but doesn't seem very elegant