Last time I wrote about UDP connection. I got some comments about the problem, that UDP packets are not guaranteed to be delivered.
This time I’m going to show you the safer option, the TCP connection.
TCP is probably the most commonly used protocol, simply because it is used for so many applications such as HTTP, POP, SMTP, etc. TCP is a protocol which guarantees that the receiver will receive exactly what the sender sent - there will be no errors, it will be in the correct order, everything will work just fine.
TCP communication time diagram.
try{
Socket s =newSocket("http://helloandroid.com",80);
We wrote a code for download image from a website to the phone. You can work with images (and files) in your applications, but this article may be useful for java developers too.
In this tutorial we will create a GPS Phone Recovery application. The application will allow the user to setup a password that he or she can use to recover a lost or stolen phone. Once the user has setup the password, if they lose their phone they'll be able to send a text message to their phone from another cell phone and if the text message is formatted "SMSLOCATE:[password]" with the correct password then the phone will respond with all of the data about the phone's current location from the GPS. This includes latitude, longitude, altitude, heading, speed, and more.
In Hello Android's first tutorial we will walk through creating a simple RSS reader. This tutorial will show you how to parse XML files and use the SQLiteDatabase for storage.
