Question

I tried to create a text file and write data to it using the code shown below:

JAVA CODE_1:

File dir = Environment.getExternalStorageDirectory();
    File file = new File(dir,"/DCIM/"+fileTitle);

    try {           
        if( file.exists() ){
        FileOutputStream fos = openFileOutput(fileTitle, MODE_WORLD_READABLE);
        OutputStreamWriter osw = new OutputStreamWriter(fos);
        osw.write("this is a text");
        osw.flush();
        osw.close();
        } else {
            file.createNewFile();
            FileOutputStream fos = openFileOutput(fileTitle, MODE_WORLD_READABLE);
            OutputStreamWriter osw = new OutputStreamWriter(fos);
            osw.write("this is a text");
            osw.flush();
            osw.close();
        }

    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

But when I check the DCIM directory, I find that the file is created but no data is written to it. please tell me where my mistake is.

Answer 1

Sorry, Its not created on External Storage but its created on Application’s Internal Storage,
(Check your file is created on /data/data/<Application_Package_Name>/files directory)

Because,

you are using openFileOutput which one creates file in Application’s Internal storage.

public abstract FileOutputStream openFileOutput (String name, int mode)

Since: API Level 1

Open a private file associated with this Context’s application package for writing. Creates the file if it doesn’t already exist.

Code:

file.createNewFile();
FileOutputStream fos = new FileOutputStream(file, true);
OutputStreamWriter osw = new OutputStreamWriter(fos);
osw.write("this is a text");
osw.flush();
osw.close();