使用ViewPager创建主/明细流

Question

How can I use the master detail flow inside a tabbed activity?

I have a view pager that has 3 pages. I'm trying to use the master/detail flow provided by android studio as one of the fragments in the view pager.

Answer 1

You can try doing this:

1. Change the extends from Activity to Fragment.

2. Add the method onCreateView and move everything from onCreate there except super.onCreate() and setContentView():

    @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { FragmentActivity faActivity = (FragmentActivity) super.getActivity(); // Replace LinearLayout by the type of the root element of the layout you're trying to load LinearLayout llLayout = (LinearLayout) inflater.inflate(R.layout.activity_layout, container, false); // Of course you will want to faActivity and llLayout in the class and not this method to access them in the rest of // the class, just initialize them here 

   // Content of previous onCreate() here // ...

    // Don't use this method, it's handled by inflater.inflate() above : // setContentView(R.layout.activity_layout); // The FragmentActivity doesn't contain the layout directly so we must use our instance of LinearLayout : llLayout.findViewById(R.id.someGuiElement); // Instead of : // findViewById(R.id.someGuiElement); return llLayout; // We must return the loaded Layout 

   }

3. Remove method onCreate.

4. Everywhere you access the Activity with this.something or just something replace with super.getActivity() . or use the value saved in the onCreateView like shown in 2). Example : Intent i = getIntent(); become Intent i = super.getActivity().getIntent()