Question

I am not able to write to the SDCARD. I can not create a Directory or a File, what am I missing I have this in the manifest

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>

And this in my code

btnSave.setOnClickListener(new View.OnClickListener() 
        {
            public void onClick(View arg0) 
            {   
                // Create a directory; all ancestor directories must exist
                    boolean success = (new File("/sdcard/Methods/")).mkdirs();
                //create file   
                    try{
                    File myFile = new File("/sdcard/Methods/Method 1 Square.xml");
                    File file = myFile;
                        // Create file if it does not exist
                        boolean success1 = file.createNewFile();}   
                    catch (IOException e) 
                        {}
                //write to file
                    try {
                        BufferedWriter out = new BufferedWriter(new FileWriter("/sdcard/Methods/Method 1 Square.xml"));
                        out.write ("<?xml version=\"1.0\"?>");
                        out.write ("<?mso-application progid=\"Excel.Sheet\"?>");
                        out.write ("Workbook xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\"");
                        out.close();
                    } // end try
                    catch (IOException e) 
                    {
                    } // end catch

            } // end public

        }); // end SAVE Button

Answer 1

1st Thing:

Just check the ‘success’ variable, whether it returns really true.

2nd Thing:

As you have hard coded the /sdcard, Instead i suggest you get the directory using: Environment.getExternalStorageDirectory() because in some devices the sd-card root directory is /mnt/sdcard so the above method to get root directory.

3rd Thing:

You should first check whether the SD-card is mounted or not.

Example:

File sdCard = Environment.getExternalStorageDirectory();
File dir = new File (sdcard.getAbsolutePath() + "/dir/subdir");  // in your case, just give /Methods

dir.mkdirs();
File file = new File(dir, "filename");  // in your case, just give "Method 1 Square.xml"

FileOutputStream f = new FileOutputStream(file);