Process at the beginning

1.

When just opened, it will run mainactivity, only once.

The init of the map is performed in the application. In mainactivity, first check if there is a network, if there is a network, and then to locate.

2 Entering Homepagefragment

After entering, the first thing is to see if there is a net

If there is a net, start positioning. And see if the positioning is complete, and when you are done, write down the coordinates.

If there is no network, tell the user that there is no network. Fetchdata ();

3. Currently only the f is called in pull

Process at the beginning