标签：系列 String void public ResultBean HomeEntity RecyclerView id 中多

上效果图：

• 多布局常见于通信软件的聊天页，会显示图片、视频、聊天、日期、头像昵称。
• 引入BaseRecyclerViewAdapterHelper和RecyclerView, 引入Gson。
• 实际开发中，json数据一般是后端返回。这里，自己准备json数据

{
    "sale":[
        {
            "id":"2",
            "name":"东风标致308"
        }
    ],
    "preSale":[
        {
            "id":"33",
            "autoName":"奇瑞 艾瑞泽3 2015款 1.5L 自动够炫版",
            "prePrice":"7.79"
        }
    ]
}

压缩如下：

{"sale":[{"id":"2","name":"东风标致308"}],"preSale":[{"id":"33","autoName":"奇瑞 艾瑞泽3 2015款 1.5L 自动够炫版","prePrice":"7.79"}]}

• 总共需要4个java类
  

• 使用GsonFormat插件生成ResultBean如下：

public class ResultBean {


    private List<SaleBean> sale;
    private List<PreSaleBean> preSale;

    public List<SaleBean> getSale() {
        return sale;
    }

    public void setSale(List<SaleBean> sale) {
        this.sale = sale;
    }

    public List<PreSaleBean> getPreSale() {
        return preSale;
    }

    public void setPreSale(List<PreSaleBean> preSale) {
        this.preSale = preSale;
    }

    public static class SaleBean {
        /**
         * id : 2
         * name : 东风标致308
         */

        private String id;
        private String name;

        public String getId() {
            return id;
        }

        public void setId(String id) {
            this.id = id;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }
    }

    public static class PreSaleBean {
        /**
         * id : 33
         * autoName : 奇瑞 艾瑞泽3 2015款 1.5L 自动够炫版
         * prePrice : 7.79
         */

        private String id;
        private String autoName;
        private String prePrice;

        public String getId() {
            return id;
        }

        public void setId(String id) {
            this.id = id;
        }

        public String getAutoName() {
            return autoName;
        }

        public void setAutoName(String autoName) {
            this.autoName = autoName;
        }

        public String getPrePrice() {
            return prePrice;
        }

        public void setPrePrice(String prePrice) {
            this.prePrice = prePrice;
        }
    }
}

• 还需生成一个HomeEntity.java，用于传递给Adapter。HomeEntity实现了MultiItemEntity接口的getItemType()方法，如下：

public class HomeEntity implements MultiItemEntity {

  public static final int TYPE_SALE = 1;
  public static final int TYPE_PRESALE = 2;
  private int itemType;

  public ResultBean.SaleBean seriesEntity;
  public ResultBean.PreSaleBean presaleEntity;

    public void setItemType(int itemType) {
        this.itemType = itemType;
    }

    public ResultBean.SaleBean getSeriesEntity() {
        return seriesEntity;
    }

    public void setSeriesEntity(ResultBean.SaleBean seriesEntity) {
        this.seriesEntity = seriesEntity;
    }

    public ResultBean.PreSaleBean getPresaleEntity() {
        return presaleEntity;
    }

    public void setPresaleEntity(ResultBean.PreSaleBean presaleEntity) {
        this.presaleEntity = presaleEntity;
    }

    @Override
  public int getItemType() {
      return this.itemType;
  }
}

• HomeEntity写好后，就开始写Adapter，新建一个CarSaleAdapter继承自BaseMultiItemQuickAdapter，代码如下：

public class CarSaleAdapter extends BaseMultiItemQuickAdapter<HomeEntity, BaseViewHolder> {

    public CarSaleAdapter(List<HomeEntity> data) {
        super(data);
        addItemType(HomeEntity.TYPE_PRESALE, R.layout.layout_presale);
        addItemType(HomeEntity.TYPE_SALE, R.layout.layout_sale);
    }

    @Override
    protected void convert(BaseViewHolder helper, HomeEntity item) {
        HomeEntity homeEntity = (HomeEntity) item;
        switch (homeEntity.getItemType()) {
            case HomeEntity.TYPE_PRESALE:
                ResultBean.PreSaleBean entity = homeEntity.getPresaleEntity();
                helper.setText(R.id.tv_brand_name, entity.getAutoName())
                        .setText(R.id.tv_lowest_price, entity.getPrePrice());
                break;
            case HomeEntity.TYPE_SALE:
                ResultBean.SaleBean seriesEntity = homeEntity.getSeriesEntity();
                helper.setText(R.id.tv_name, seriesEntity.getName());
                break;
        }
    }
}

附上CarSaleAdapter所需要的布局文件，layout_presale.xml如下：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    xmlns:tools="http://schemas.android.com/tools"
    android:background="#ff0000">

    <TextView
        android:id="@+id/tv_tip"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="预售："
        android:textSize="18sp"
        />
    <TextView
        android:layout_below="@id/tv_tip"
        android:id="@+id/tv_brand_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        tools:text="xx"
        android:layout_marginLeft="20dp"
        android:textSize="18sp"
        />

    <TextView
        android:id="@+id/tv_lowest_price"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="20dp"
        android:textSize="18sp"
        android:layout_below="@id/tv_brand_name"
        tools:text="yyy"
        android:textStyle="bold"
        />
</RelativeLayout>

layout_sale.xml如下：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="80dp"
    android:background="#00ff00">
    <TextView
        android:id="@+id/tv_tip"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="在售："
        android:textSize="18sp"
        />

    <TextView
        android:id="@+id/tv_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/tv_tip"
        android:layout_marginLeft="20dp"
        android:textSize="24sp"
        android:textStyle="bold"
        tools:text="xxx" />

</RelativeLayout>

• Adapter搞定后，开始测试最终效果:

public class MainActivity extends AppCompatActivity {
    String jsonStr = "{\"sale\":[{\"id\":\"2\",\"name\":\"东风标致308\"}],\"preSale\":[{\"id\":\"33\",\"autoName\":\"奇瑞 艾瑞泽3 2015款 1.5L 自动够炫版\",\"prePrice\":\"7.79\"}]}";
    ResultBean homeBean;
    RecyclerView rvList;
    CarSaleAdapter adapter;

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

        rvList = findViewById(R.id.rv_list);
        rvList.setLayoutManager(new LinearLayoutManager(this));

        homeBean = new Gson().fromJson(jsonStr, ResultBean.class);
        List<HomeEntity> list = new ArrayList<>();
        for (int i = 0; i < homeBean.getPreSale().size(); i++) {
            ResultBean.PreSaleBean preSaleBean = homeBean.getPreSale().get(i);
            HomeEntity entity = new HomeEntity();
            entity.setItemType(HomeEntity.TYPE_PRESALE);
            entity.setPresaleEntity(preSaleBean);
            list.add(entity);
        }

        for (int i = 0; i < homeBean.getSale().size(); i++) {
            ResultBean.SaleBean seriesEntity = homeBean.getSale().get(i);
            HomeEntity entity = new HomeEntity();
            entity.setSeriesEntity(seriesEntity);
            entity.setItemType(HomeEntity.TYPE_SALE);
            list.add(entity);
        }
        adapter = new CarSaleAdapter(list);
        rvList.setAdapter(adapter);
    }
}

标签：系列,String,void,public,ResultBean,HomeEntity,RecyclerView,id,中多
来源： https://blog.csdn.net/zhangjin1120/article/details/117077542

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