java - Android - 构造函数 ImageAdapter(Tab2SalonActivity) 未定义

Question

我是 Android 新手，在“扩展 Fragment”上实现 GridView 时遇到一个问题。

Tab2SalonActivity.java

public class Tab2SalonActivity extends Fragment
{
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
        {
            final View root= inflater.inflate(R.layout.page_two_salon, container, false);

            GridView gridview = (GridView) root.findViewById(R.id.gridView);

            gridview.setAdapter(new ImageAdapter(this));//Line error

            gridview.setOnItemClickListener(new OnItemClickListener() {

                public void onItemClick(AdapterView<?> parent, View v,
                        int position, long id) {     
                }
            });

            return root;
        }
    }

ImageAdapter.java

public class ImageAdapter extends BaseAdapter {
    private Context mContext;

    public ImageAdapter(Context c) {
        mContext = c;
    }

    public int getCount() {
        return mThumbIds.length;
    }

    public Object getItem(int position) {
        return null;
    }

    public long getItemId(int position) {
        return 0;
    }//continue...

如何解决这个问题？

错误是:

"The constructor ImageAdapter(Tab2SalonActivity) is undefined"

我不知道如何在构造函数上定义，总是有错误，请帮助我!

谢谢

Answer 1

改变这个

gridview.setAdapter(new ImageAdapter(this));

至

gridview.setAdapter(new ImageAdapter(getActivity()));

构造函数需要 Context 作为参数。但是 this 没有引用有效的上下文