Unable to create file in Android app

Question

I am making a android app in which i am going to use File handling but to do that first i need to create it but by using following code:

File logf = new File("log1.txt"); Boolean bb = logf.exists(); if(!bb) try { bb = logf.createNewFile(); } catch (IOException e) { msg.setText("not able to create file."); }

'msg' is the TextView object which i am using to display error, and when i run this app.. it goes into IOException e catch.. Please tell me if i am doing something wrong or what?.. besides i am using Android 2.2 for my app.

as my previous textview was empty and when i run this.. then it changed to "not able to create file.".. that means its not creating a file and its going into catch — jimmy
– jimmy, Commented May 20, 2017 at 6:49
WRITE_EXTERNAL_STORAGE was necessary if i was using external storage as i am only using internal storage which private for my app. — jimmy
– jimmy, Commented May 20, 2017 at 7:08

Rust Fisher · Accepted Answer · 2017-05-20 07:03:10Z

1

In app storage, please try this:

File file = new File(getFilesDir(), "file.txt");

Or if you want to append file name, try this:

File file = new File(getFilesDir() + File.separator + "file.txt");

edited May 20, 2017 at 7:03

answered May 20, 2017 at 6:57

Rust Fisher

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2 Comments

jimmy Over a year ago

don't i have to use file separator between them?

Rust Fisher Over a year ago

No need, please see public File(File parent, String child)

Vasant · Accepted Answer · 2017-05-20 06:51:12Z

1

you need to provide absolute path of file like below.

File file = new File(/data/packagename/files/ + "log1.txt");

edited May 20, 2017 at 6:51

answered May 20, 2017 at 6:43

Vasant

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2 Comments

jimmy Over a year ago

but i am not using external storage, i want to use internal storage

jimmy Over a year ago

rust fisher's was easy.. but yours is necessary when we have to share with apps

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