Question

我正在尝试在我的可穿戴应用程序中显示一个2行列表视图，如下图中的那个（没有图标），但由于某种原因，它没有按预期工作。我认为问题在于以下代码行：

ListViewItem androiders = new ListViewItem();

在括号之间需要进行某些操作，因为当没有任何内容时，会返回以下错误。

ListViewItem中的ListViewItem（String）无法应用于（）

我尝试了一些选项，但都没有。

选项A

ListViewItem androiders = new ListViewItem("");

选项B

ListViewItem androiders = new ListViewItem("hello world");

有没有人知道括号之间应该放置什么才能解决这个问题？

预期结果

MainActivity.java

public class MainActivity extends Activity implements WearableListView.ClickListener{


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

        initialize();
    }

    List<ListViewItem> list = new ArrayList<>();
    private void initialize() {
        String[] items = getResources().getStringArray(R.array.versions_array);
        String[] itemDescriptions = getResources().getStringArray(R.array.years_array);
        for (int n = 0; n < items.length; n++){
            ListViewItem androiders = new ListViewItem(?);
            androiders.setID();
            androiders.setVersion(items[n]);
            androiders.setYear(itemDescriptions[n]);
            list.add(androiders);
        }

        WearableListView wearableListView = (WearableListView) findViewById(R.id.wearable_list_view);
        ListViewAdapter mAdapter = new ListViewAdapter(this, list);
        wearableListView.setAdapter(mAdapter);
        wearableListView.setClickListener(this);
        wearableListView.addOnScrollListener(mOnScrollListener);
    }
}

ListViewItem.java

public class ListViewItem {

    public String text0;
    public String text1;
    private String version;
    private String year;

    public ListViewItem(String text) {
        this.text0 = text;
        this.text1 = text;
    }

    public String getVersion(){
        return version;
    }

    public void setVersion(String version){
        this.version = version;
    }

    public String getYear(){
        return year;
    }

    public void setYear(String year){
        this.year = year;
    }

    private int _id;
    public void getID(int _id){
        this._id = _id;
    }

    public int setID(){
        return _id;
    }
}

的strings.xml

<resources>
    <!--Versions strings-->
    <string name="jellybean">Jelly Bean</string>
    <string name="kitkat">KitKat</string>
    <string name="lollipop">Lollipop</string>
    <string name="marshmallow">Marshmallow</string>
    <string name="nougat">Nougat</string>

    <!--Years strings-->
    <string name="released_2012">Released: 2012</string>
    <string name="released_2013">Released: 2013</string>
    <string name="released_2014">Released: 2014</string>
    <string name="released_2015">Released: 2015</string>
    <string name="released_2016">Released: 2016</string>

    <!--Versions array-->
    <string-array name="versions_array">
        //item 1    <item>@string/jellybean</item>
        //item 2    <item>@string/kitkat</item>
        //item 3    <item>@string/lollipop</item>
        //item 4    <item>@string/marshmallow</item>
        //item 5    <item>@string/nougat</item>
    </string-array>

    <!--Years array-->
    <string-array name="years_array">
        //item 1    <item>@string/released_2012</item>
        //item 2    <item>@string/released_2013</item>
        //item 3    <item>@string/released_2014</item>
        //item 4    <item>@string/released_2015</item>
        //item 5    <item>@string/released_2016</item>
    </string-array>

</resources>

Answer 1

在ListViewItem.java＆＃39;中查看你的构造函数，应该很明显已经设置了什么。已设置text0和text1，然后您的列表适配器正在使用列表中的这些值。

2行WearableListView无法正常工作

1 个答案: