具有不同活动或片段的导航抽屉

Question

I will be starting with a, new app development.As i am new to android development, i wanted a suggestion.In my app i will be using a navigation drawer.Now i am confused that whether to use different activities or fragments.Also i wanted to make a navigation drawer common to all the activites without written the drawer code in all the activities.Please can some one help me which is the better way

1. To use one activities and multiple fragments or
2. one activity associated with a fragments.
3. Also how to use common navigation drawer code(along with actionBar) in all the activities

Answer 1

One way you can do it is having a BaseActivity that extends ActionBarActivity and has the DrawerLayout and a FrameLayout that serves as a container to your current Fragment . It also has the code to put the DrawerLayout functioning and has an abstract method that changes the Fragment inside it. Like this:

public abstract void putFragment();

inside onCreate() method, the last call you make is putFragment() ;

Then you will have as many Activities you want that will extend this BaseActivity and will implement putFragment() method. What they will do there is change the Fragment in the FrameLayout container. It means you have one Fragment for each sub Activity of BaseActivity .

You do not need to implement onCreate() method in your subActivities, because they inherit the parent Activity layout. Just implement putFragment() method so you have control on the current Fragment. Inside onCreateView() of each Fragment, do your app logic.

About the DrawerLayout, you just have to implement a CallBack in each of your SubActivities to handle a click in the DrawerLayout , and then execute a method like selectDrawerItem() , that starts the desired Sub Activity .