Reading/writing files

29 April 2008

This post is all about reading and writing text files on mobile device.

In order to write files on the mobile device, you need com.motorola.file.writeaccess. If your application has that permission, you can write files easily using the following code.

FileConnection sc = (FileConnection)Connector.open("file:///phone/tmp.txt"); 
OutputStream os = sc.openOutputStream(); 
os.write(("text to go into the file").getBytes()); 
os.flush(); 
os.close();

com.motorola.file.readaccess is need to read files from mobile device. Files are read byte by byte as shown below.

FileConnection sc = (FileConnection)Connector.open("file:///phone/tmp.txt"); 
InputStream is = sc.openInputStream(); 
StringBuffer sofar = new StringBuffer(); 
byte c; 
while ((c = (byte)is.read()) != -1)
{ 
	sofar.append((char)c); 
} 
is.close();