Sending Sms And Mms

I'm looking at replacing the default Android text messing app with my own, but I don't exactly know how to send SMS and MMS text messages. I would like to at least get it so that

Solution 1:

Check the android-smspopup source code.

Solution 2:

So, what exactly should be done when sending messages of these types? Any code examples that would be easy enough to understand?

Use SmsManager. Here is a sample project showing the basics of sending an SMS, either through the default client or by using SmsManager. I do not believe there is a public API to send MMS, though.