片段中的浮動操作按鈕

Question

我正在嘗試向片段添加浮動操作按鈕，但是使用findViewById創建按鈕時出現錯誤。

public class HomeFragment extends Fragment {

FloatingActionButton fab;

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    return inflater.inflate(R.layout.fragment_home, container,false);

    fab = (FloatingActionButton) getView().findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            startActivity(new Intent(getActivity(), ProfileActivity.class));
        }
    });
}

}

錯誤：fab =（FloatingActionButton）getView（）。findViewById（R.id.fab）;

“無法到達的陳述”

Answer 1

如下更新代碼：

public class HomeFragment extends Fragment {

        FloatingActionButton fab;

        @Nullable
        @Override
        public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
            View view = inflater.inflate(R.layout.fragment_home, container, false);

            fab = (FloatingActionButton) view.findViewById(R.id.fab);
            fab.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    startActivity(new Intent(getActivity(), ProfileActivity.class));
                }
            });
            return view;
        }
    }

Answer 2

您在上面有一個返回值，這意味着無法到達此行代碼（及以下代碼）。