FileNotFoundException when trying to read a file I've written

Question

I am trying to write an object (pilotRecord) to a file and read it back again. I understood that I didn't need to specify a path as it is internal to my app, so I want all files deleted if the app is uninstalled.

Here's my code:

 fileoutputstream = openFileOutput("test1", Context.MODE_WORLD_WRITEABLE); Log.d(this.getClass().getName(), "loadPilotRecord: "+fileoutputstream.toString()); objectoutputstream = new ObjectOutputStream(fileoutputstream); Log.d(this.getClass().getName(), "loadPilotRecord: "+objectoutputstream.toString()); objectoutputstream.writeObject(pilotRecord); objectoutputstream.close(); fileoutputstream.close(); fileinputstream = new FileInputStream("test1"); Log.d(this.getClass().getName(), "loadPilotRecord: "+fileinputstream.toString()); objectinputstream = new ObjectInputStream(fileinputstream); Log.d(this.getClass().getName(), "loadPilotRecord: "+objectinputstream.toString()); pilotRecord = (PilotRecord)objectinputstream.readObject(); objectinputstream.close(); fileinputstream.close();

My problem is that I get a FileNotFoundException on the following line in the above code: fileinputstream = new FileInputStream("test1"); I'm not really sure how to find out what path it is using, or maybe there is a more obvious problem I'm just not seeing. Sorry if this is a bit basic, but I'm still trying to find my feet. The Log.d statements just output the class name and an Id.

TIA,

Frink

plagelao · Accepted Answer · 2010-08-10 14:27:00Z

2

Have you tried openfileinput("test1) instead of new FileInputStream("test1")?

answered Aug 10, 2010 at 14:27

plagelao

362 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

FrinkTheBrave Over a year ago

Cheers. That worked a treat, thanks. Not sure why new FileInputStream("test1") didn't work tho as it was copied from an example

Paul Richter · Accepted Answer · 2014-03-19 21:25:23Z

1

To find out which path is actually used try:

File f = new File("test1"); Log.d(this.getClass().getName(), f.getAbsolutePath());

Look at this location if the file is really created - if not, you won't be able to read.

EDIT: removed the guess with flush which was quite some nonsense

edited Mar 19, 2014 at 21:25

Paul Richter

11.1k10 gold badges56 silver badges89 bronze badges

answered Aug 10, 2010 at 14:25

mort

13.7k14 gold badges60 silver badges97 bronze badges

2 Comments

Stephen C Over a year ago

-1 - You do not need to flush a stream before closing it. The close will do a flush. Anyway, that would not cause a FileNotFoundException, because the file would be created by the FileOutputStream constructor invocation.

FrinkTheBrave Over a year ago

That returned /test1 so I suppose it is relative to the app, which makes sense. Don't think I can access that file area from within the emulator, which is a shame

Collectives™ on Stack Overflow

FileNotFoundException when trying to read a file I've written

2 Answers 2

1 Comment

2 Comments

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

2 Comments

Related