Android delete file error

I use this code for deleting my database:

 File开发者_开发百科 file = new File(DB_PATH , DB_NAME);
 file.delete();

It deletes my database, but the application then stop running.

It's ok when I just initialise file, se the problem is with file.delete();

Any ideas, if it works, why it breaks down my app every time?

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Try context.deleteDatabase(dbpath);