Question

我正在Android中开发多片段布局，并且我使用了List Fragment。我不想使用默认的阵列适配器，当我使用自定义阵列适配器时，列表视图没有响应。它无法打开另一个活动或片段（如果是横向）。

这是我的代码，它也出现在Android官方网站上。

TitlesFragment：

import android.app.FragmentTransaction;
import android.app.ListFragment;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Toast;

public class TitlesFragment extends ListFragment {

    boolean mDuelPane;
    int mCurCheckPosition = 0;

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

                new SuperHeroInfo();



        Fragment_Adapter connectArrayToListView=new Fragment_Adapter(getActivity(),SuperHeroInfo.NAMES);


        setListAdapter(connectArrayToListView);

        View detailsFrame = getActivity().findViewById(R.id.details);


        mDuelPane = detailsFrame != null && detailsFrame.getVisibility() == View.VISIBLE;

        // If the screen is rotated onSaveInstanceState() below will store the // hero most recently selected. Get the value attached to curChoice and // store it in mCurCheckPosition
        if (savedInstanceState != null) {
            // Restore last state for checked position.
            mCurCheckPosition = savedInstanceState.getInt("curChoice", 0);
        }

        if (mDuelPane) {
            getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);


            showDetails(mCurCheckPosition);
        }
    }


    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putInt("curChoice", mCurCheckPosition);
    }

    // When a list item is clicked we want to change the hero info
    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {
        showDetails(position);
    }


    void showDetails(int index) {

        // The most recently selected hero in the ListView is sent
        mCurCheckPosition = index;


        if (mDuelPane) {
            //try
            getListView().setItemChecked(index, true);


            DetailsFragment details = (DetailsFragment)
                    getFragmentManager().findFragmentById(R.id.details);


            if (details == null || details.getShownIndex() != index) {

                // Make the details fragment and give it the currently selected hero index
                details = DetailsFragment.newInstance(index);

                // Start Fragment transactions
                FragmentTransaction ft = getFragmentManager().beginTransaction();

                // Replace any other Fragment with our new Details Fragment with the right data
                ft.replace(R.id.details, details);

                // TRANSIT_FRAGMENT_FADE calls for the Fragment to fade away
                ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
                ft.commit();
            }

        } else {

            Intent intent = new Intent();


            intent.setClass(getActivity(), DetailsActivity.class);

            // Pass along the currently selected index assigned to the keyword index
            intent.putExtra("index", index);

            // Call for the Activity to open
            startActivity(intent);
        }
    }
}

Fragment_Adapter：

import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;

public class Fragment_Adapter extends ArrayAdapter<String> {

    Context context;
    ArrayList<String> SmallArray;

    public Fragment_Adapter(Context context, ArrayList<String> objects) {
        super(context, R.layout.list_view, objects);
        this.context=context;
        SmallArray=objects;

    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        LayoutInflater inflater = ((Activity)context).getLayoutInflater();
        convertView = inflater.inflate(R.layout.list_view, parent, false);
        TextView text = (TextView) convertView.findViewById(R.id.small_text);
        text.setText(SmallArray.get(position));
        return convertView;

    }
}

Answer 1

我认为你应该改变getView方法的第一行。

试试这个：

LayoutInflater inflater = getAplicationContext.getLayoutInflater();

列表片段在自定义布局中没有响应

1 个答案: