Useful design patterns for working with FragmentManger on Android
- by antman8969
When working with fragments, I have been using a class composed of static methods that define actions on fragments. For any given project, I might have a class called FragmentActions, which contains methods similar to the following:
public static void showDeviceFragment(FragmentManager man){
String tag = AllDevicesFragment.getFragmentTag();
AllDevicesFragment fragment = (AllDevicesFragment)man.findFragmentByTag(tag);
if(fragment == null){
fragment = new AllDevicesFragment();
}
FragmentTransaction t = man.beginTransaction();
t.add(R.id.main_frame, fragment, tag);
t.commit();
}
I'll usually have one method per application screen. I do something like this when I work with small local databases (usually SQLite) so I applied it to fragments, which seem to have a similar workflow; I'm not married to it though.
How have you organized your applications to interface with the Fragments API, and what (if any) design patterns do you think apply do this?
