HarmonyOS 应用开发-ListContainer体验与分享 原创

ListContainer是用来呈现连续、多行数据的组件，包含一系列相同类型的列表项。下面通过演示显示效果。

显示效果：

点击图中的内容会有提示

可以上下滑动

SampleItemProvider.java中的代码

package com.example.jltftiyan9.slice;

import com.example.jltftiyan9.ResourceTable;
import com.example.jltftiyan9.SampleItem;
import ohos.aafwk.ability.AbilitySlice;
import ohos.agp.components.*;
import java.util.List;
public class SampleItemProvider extends BaseItemProvider {

    private List<SampleItem> list;
    private AbilitySlice slice;
    public SampleItemProvider(List<SampleItem> list, AbilitySlice slice) {
        this.list = list;
        this.slice = slice;
    }
    @Override
    public int getCount() {
        return list == null ? 0 : list.size();
    }
    @Override
    public Object getItem(int position) {
        if (list != null && position >= 0 && position < list.size()){
            return list.get(position);
        }
        return null;
    }
    @Override
    public long getItemId(int position) {
        return position;
    }
    @Override
    public Component getComponent(int position, Component convertComponent, ComponentContainer componentContainer) {
        final Component cpt;
        if (convertComponent == null) {
            cpt = LayoutScatter.getInstance(slice).parse(ResourceTable.Layout_jltfitem_sample, null, false);
        } else {
            cpt = convertComponent;
        }
        SampleItem sampleItem = list.get(position);
        Text text = (Text) cpt.findComponentById(ResourceTable.Id_item_index);
        text.setText(sampleItem.getName());
        return cpt;
    }

}

完整代码地址：

https://gitee.com/jltfcloudcn/jump_to/tree/master/jltf_ListContainer_component