CODEWITHSUNDEEP
javaandroidsavenewline
GIZNAJ
GIZNAJ

Reputation: 501

Can't successfully add a newline when I append text to a file

I've created an app that creates a file on the device that stores about 5 values (double). I think I'm writing the file successfully because I get to see a toast message on the device just after the file is written.

If I try and add a newline to the command, then I never see the toast message so the writing is failing.

Here is my WORKING code:

try{
            String path = this.getFilesDir().getAbsolutePath();
            file = new File(path + "/" + filename);
            OutputStreamWriter outputStreamWriter = new OutputStreamWriter(openFileOutput(filename, Context.MODE_PRIVATE));
            for (int i = 0; i < priceArray.length; i++) {
                outputStreamWriter.append(String.format("%.2f", priceArray[i]));
                testText.append(String.format("%.2f", priceArray[i]));
            }
            Toast.makeText(this, "Prices saved successfully!", Toast.LENGTH_SHORT).show();
            outputStreamWriter.close();
        }catch (Exception e) {
            e.printStackTrace();
        }

What is the best way to implement entries on their own line in the file? The line testText.append(String.format("%.2f", priceArray[i])); in my code is there for me to see the values as I can't locate the file on the file system.

Upvotes: 0

Views: 285

Answers (1)

krzydyn
krzydyn

Reputation: 1032

You should format correctly: outputStreamWriter.append(String.format("%.2f\n", priceArray[i]); Notice \n after %.2f.

Upvotes: 1

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