AS3/main/java/com/example/hom1/SetTitleFragment.java

package com.example.hom1;

import android.os.Bundle;

import androidx.fragment.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;


public class SetTitleFragment extends Fragment {

    private View view;
    private String[] title;
    private String[][] contents;
    private ListView listView;


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        view=inflater.inflate(R.layout.title_layout,container,false);
        MainActivity activity=(MainActivity)getActivity();
        title=activity.getTilte();
        contents=activity.getSettingText();
        if (view!=null){
            init();
        }
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                //通过activity实例获取另一个Fragment对象
                SetContentFragment content=(SetContentFragment)((MainActivity)getActivity())
                        .getSupportFragmentManager().findFragmentById(R.id.setcontent);
                content.setText(contents[i]);

            }
        });
        return view;
    }

    private void init() {
        listView=(ListView)view.findViewById(R.id.titlelist);
        if (title!=null){
            listView.setAdapter(new MyAdapter());
        }
    }
    //适配器
    class MyAdapter extends BaseAdapter {

        @Override
        public int getCount() {
            return title.length;
        }

        @Override
        public Object getItem(int i) {
            return title[i];
        }

        @Override
        public long getItemId(int i) {
            return i;
        }

        @Override
        public View getView(int i, View view, ViewGroup viewGroup) {
            view=View.inflate(getActivity(),R.layout.title_item_layout,null);
            TextView titletext=(TextView)view.findViewById(R.id.titles);
            titletext.setText(title[i]);
            return view;
        }
    }
}