问如何在Android中创建一个.txt文件？

EN

public static void Save(File file, String[] data)
{
    FileOutputStream fos = null;

    try
    {
        fos = new FileOutputStream(file);
    } catch(FileNotFoundException e)
    {
       e.printStackTrace();
    }

    try
    {
        try
        {
            for(int i = 0; i < data.length; i++)
            {
                fos.write(data[i].getBytes());
                if(i < data.length - 1)
                {
                    fos.write("\n".getBytes());
                }
            }
        } catch(IOException e)
        {
            e.printStackTrace();
        }
    } finally
    {
        try
        {
            fos.close();
        } catch(IOException e)
        {
            e.printStackTrace();
        }
    }
}

Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void java.io.FileOutputStream.close()' on a null object reference