Eclipse behaving differently while creating new project/activity

问题

Whenever I create new project it always creating appcompat_v7 project with my new project. And when I create new android activity it always extend ActionBarActivity and also create fragment_main.xml. I tried to update adt and s\w also still no luck

and this code also generated in main activity

 public static class PlaceholderFragment extends Fragment {

    public PlaceholderFragment() {
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_main, container,
                false);
        return rootView;
    }
} 

回答1:

I had the same problem. I have figured out 3 ways hope this helps

1. (this may or may not work) Check your android virtual device manager. I would think you have a device that has CPU/ABI selected for "armeabi-v7a". Delete that device and try creating a new project. You would notice that project appcompat_v7 is no longer being created.
2. (Works) Another way to avoid this would to create new project through android project through existing codes. Hopeful you have a project you created from before to copy over.
3. (Works) Create a blank android project without activity and create the activity later.

来源：https://stackoverflow.com/questions/22250633/eclipse-behaving-differently-while-creating-new-project-activity