将文件写入nexus 4设备不起作用

Question

I am trying to create a file on device using the following code

private void createFileOnDevice(Boolean append) throws IOException {

        File Root = Environment.getExternalStorageDirectory();
        if (Root.canWrite()) {
            File LogFile = new File(Root, "log.txt");
            FileWriter LogWriter = new FileWriter(LogFile, append);
            out = new BufferedWriter(LogWriter);
            Date date = new Date();
            out.write("Logged at"
                    + String.valueOf(date.getDay() + "-" + date.getHours()
                            + ":" + date.getMinutes() + ":" + date.getSeconds()
                            + "\n"));
        }
    }

The code works fine, when i run on devices which has android version 2.3.5 to 4.3 it creates a file.

But when i run the same app on Nexus 4 , which has latest android version(4.4.2, kitkat), i am unable to create the file. Also, I am not getting any error.

How do i fix it??..

Thanks in advance :):)

Answer 1

The issue could be the lack of external storage on a nexus 4...

When you are testing, are you testing it in debug mode? If so your operating system will have access to the storage on the nexus 4 and not the phone. Try testing it when the phone has access to the storage and see what happens then...