Introduction - If you have any usage issues, please Google them yourself
Android running on a variety of devices, there is a small screen mobile phone, tablet or even a large-screen TV. For screen size disparity, in many cases, it is the first to develop a set for mobile App, then copy, modify the layout to accommodate the flat Shenma super large screen. Do not do a App can simultaneously accommodate mobile phones and tablet Why, of course, there must be ah. The emergence of Fragment is to solve this problem. You can put Fragment as an integral part of the Activity interface, and even the Activity interface can be completely different Fragment composition is more handsome Fragment has its own life cycle and for receiving, processing user events, so you do not write in Activity a bunch of event handling code control. More importantly, you can dynamically add, replace and remove a Fragment.