java - 如何将Listview添加到Listview Android Studio中

Question

我想将 ListView 添加到我的 ListView 中。这就像一本简单的旅行书。用户将单击其中一个国家/地区并进入另一个 ListView 。我可以用图片轻松解释

这是我的Listview:http://prntscr.com/mhwic4

我想向所有国家/地区添加一个城市。就像罗马、威尼斯、佛罗伦萨进入意大利，悉尼进入澳大利亚，里约进入巴西之类的事情。

这是我的主要 Activity 代码:

public class MainActivity extends AppCompatActivity {

ListView listView;

String[] nameArray = {"İtalya","Almanya","Amerika","Avustralya","Brezilya","Çin","Dubai","Fransa","İsviçre","Hollanda","İspanya","Kanada","Macaristan","Rusya",
"Sırbistan","Yunanistan"};

String[] infoArray = {
        "Buon divertimento!",
        "Viel spaß",
        "Have fun!",
        "Have fun!",
        "Divirta-se!",
        "玩得开心！",
        "استمتع!",
        "Amusez vous bien!",
        "Viel spaß",
        "Veel plezier!",
        "Diviertete!",
        "Have fun!",
        "Jó szórakozást!",
        "Веселись!",
        "Забавите се!",
        "Διασκεδάστε!"


};

Integer[] imageArray = {R.drawable.italy,
        R.drawable.germany,
        R.drawable.usa,
        R.drawable.aus,
        R.drawable.brazil,
        R.drawable.china,
        R.drawable.dubai,
        R.drawable.france,
        R.drawable.swit,
        R.drawable.netherlands,
        R.drawable.spain,
        R.drawable.canada,
        R.drawable.macaristan,
        R.drawable.russia,
        R.drawable.serbia,
        R.drawable.greece
};


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);



        CustomListAdapter whatever = new CustomListAdapter(this, nameArray, infoArray, imageArray);
        listView = (ListView) findViewById(R.id.listviewID);
        listView.setAdapter(whatever);

    }

}

这里是适配器代码:

public class CustomListAdapter extends ArrayAdapter {


public View getView(int position, View view, ViewGroup parent) {
    LayoutInflater inflater=context.getLayoutInflater();
    View rowView=inflater.inflate(R.layout.listview_row, null,true);

    //this code gets references to objects in the listview_row.xml file
    TextView nameTextField = (TextView) rowView.findViewById(R.id.nameTextViewID);
    TextView infoTextField = (TextView) rowView.findViewById(R.id.infoTextViewID);
    ImageView imageView = (ImageView) rowView.findViewById(R.id.imageView1ID);

    //this code sets the values of the objects to values from the arrays
    nameTextField.setText(nameArray[position]);
    infoTextField.setText(infoArray[position]);
    imageView.setImageResource(imageIDarray[position]);

    return rowView;
}

//to reference the Activity
private final Activity context;

//to store the animal images
private final Integer[] imageIDarray;

//to store the list of countries
private final String[] nameArray;

//to store the list of countries
private final String[] infoArray;

public CustomListAdapter(Activity context, String[] nameArrayParam, String[] infoArrayParam, Integer[] imageIDArrayParam) {

    super(context, R.layout.listview_row, nameArrayParam);
    this.context=context;
    this.imageIDarray = imageIDArrayParam;
    this.nameArray = nameArrayParam;
    this.infoArray = infoArrayParam;
  }
 }

Answer 1

我不完全确定您在问什么，但您可能正在寻找 ExpandableListView 。这样您就可以在同一 View 中列出每个国家/地区的城市。用户点击一个国家/地区即可将其展开并显示其城市。

使用“主/详细信息”流程可能会更轻松，并且在不同设备上更有效，其中“详细信息” fragment 显示“主”列表中所选国家/地区的城市列表。请参阅Implement Master/Detail Flows Across Handsets and Tablets .