我创建了一个水平列表视图。现在我想在垂直列表视图的每个项目中都有这个水平列表视图。怎么做？

Question

这是我的main_activity.xml

<?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:id="@+id/activity_main"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   tools:context="com.smartrix.horizontal_listview.MainActivity">

<android.support.v7.widget.RecyclerView
    android:id="@+id/recycler_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>

</RelativeLayout>

这是我的row.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_margin="12dp"
  android:layout_width="150dp"
  android:layout_height="250dp">

<TextView
    android:id="@+id/title"
    android:textStyle="bold"
    android:textSize="20dp"
    android:textAlignment="center"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>

</android.support.v7.widget.CardView>

这是我的mainActivity.java

package com.smartrix.horizontal_listview;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

private RecyclerView mRecyclerView;
private RecyclerView.LayoutManager mLayoutManager;
private RecyclerView.Adapter mAdapter;
private ArrayList<String> mDataSet;


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

    mDataSet = new ArrayList<>();
    for (int i = 0; i < 20; i++) {
        mDataSet.add("New Title #"+i);
    }

    mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);
    mRecyclerView.setHasFixedSize(true);
    mLayoutManager = new LinearLayoutManager(this,LinearLayoutManager.HORIZONTAL,false);
    mRecyclerView.setLayoutManager(mLayoutManager);
    mAdapter = new MainAdapter(mDataSet);
    mRecyclerView.setAdapter(mAdapter);
   }
 }

这是我的mainAdapter.java ::

package com.smartrix.horizontal_listview;

import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import java.util.ArrayList;

public class MainAdapter extends RecyclerView.Adapter<MainAdapter.ViewHolder> {

private ArrayList<String> mDataSet;

public MainAdapter(ArrayList<String> mDataSet){
    this.mDataSet = mDataSet;
}

@Override
public MainAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.row, parent, false);

    ViewHolder vh = new ViewHolder(v);
    return vh;
}

@Override
public void onBindViewHolder(MainAdapter.ViewHolder holder, int position) {
    holder.mTitle.setText(mDataSet.get(position));
}

@Override
public int getItemCount() {
    return mDataSet.size();
}

public class ViewHolder extends RecyclerView.ViewHolder {

    public TextView mTitle;

    public ViewHolder(View itemView) {
        super(itemView);
        mTitle = (TextView) itemView.findViewById(R.id.title);
    }
  }
}

此准则完美无缺。现在我想在Vertical ListView的每个ListItem中添加这个Horizo​​ntal ListView。这该怎么做 ？？

Answer 1

您只需在列表中添加一个新的水平方向RecyclerView作为项目（您可以将其添加到适配器中）。

将RelativeView嵌套在一起是可以的。

在您的情况下，将其添加到您的row.xml版面，然后在mainAdapter.java课程中对其进行充气