Question

我有一个从导航栏运行的片段。这个ListView包含4个元素，我想做多个选择，重定向到另一个活动。我是否应该为所有这些选择进行活动，使其成为if else if语句，或者是否有更简单的方法来做到这一点？新活动将包含有关每个类别的数据。这是我的片段

public class Caffes extends Fragment {
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
final  String[] items=new String[]{"Urban Style","Unic concept","Small and cosy","Coffe to go"};

// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;

private OnFragmentInteractionListener mListener;

public Caffes() {
    // Required empty public constructor
}

// TODO: Rename and change types and number of parameters
public static Caffes newInstance(String param1, String param2) {
    Caffes fragment = new Caffes();
    Bundle args = new Bundle();
    args.putString(ARG_PARAM1, param1);
    args.putString(ARG_PARAM2, param2);
    fragment.setArguments(args);
    return fragment;
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (getArguments() != null) {
        mParam1 = getArguments().getString(ARG_PARAM1);
        mParam2 = getArguments().getString(ARG_PARAM2);
    }
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View view=inflater.inflate(R.layout.fcaffes,container,false);
    ListView list=(ListView)view.findViewById(R.id.listView1);
    ArrayAdapter<String> adapter=new ArrayAdapter<String>(getActivity(),android.R.layout.simple_list_item_1,items);
    list.setAdapter(adapter);
    list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {   //arg2-position,
          if(arg2==1) {
              Intent intent = new Intent(this, Liked.class);
              intent.putExtra("position", arg2);
              startActivity(intent);


          }
            Toast.makeText(getActivity().getApplicationContext(), "Yea!!! click called", Toast.LENGTH_SHORT).show();
        }
    });


    return view;}

Answer 1

我会创建一个使用Intent创建新活动的方法，并在intent中放置您想要添加的变量。然后我会在每个if中调用方法。

您可以使用切换功能，而不是使用if else！

希望有所帮助

listView选择多个项目

1 个答案: