文件结构

MainActivity

package cn.edu.sicnu.networkjsondemo2;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonArrayRequest;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.Volley;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "MainActivity";

    ListView listView;
    MyAdapter adapter;
    RequestQueue queue;
    ArrayList<Student> students = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        listView = findViewById(R.id.listView);
        adapter = new MyAdapter();
        listView.setAdapter(adapter);
        queue = Volley.newRequestQueue(this);

        downloadJsonData();

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

                Student student = students.get(position);
                Intent intent = new Intent(MainActivity.this, Main2Activity.class);
                intent.putExtra("student", student);
                startActivity(intent);

            }
        });

    }

    public void downloadJsonData(){
        JsonArrayRequest request = new JsonArrayRequest("http://10.0.1.2/piclist.php", new Response.Listener<JSONArray>() {
            @Override
            public void onResponse(JSONArray response) {
                Type type = new TypeToken<ArrayList<Student>>(){}.getType();
                Gson gson = new Gson();
                students = gson.fromJson(response.toString(),type);

                adapter.notifyDataSetChanged();
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {

            }
        });
        queue.add(request);
    }


    class MyAdapter extends BaseAdapter{

        @Override
        public int getCount() {
            return students.size();
        }

        @Override
        public Object getItem(int position) {
            return students.get(position);
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder viewHolder;
            if(convertView==null){
                convertView = LayoutInflater.from(MainActivity.this).inflate(R.layout.stulayout,null);
                viewHolder = new ViewHolder();
                viewHolder.textView_name = convertView.findViewById(R.id.textView_name);
                viewHolder.textView_stuno = convertView.findViewById(R.id.textView_stuno);
                viewHolder.textView_gender = convertView.findViewById(R.id.textView_gender);
                convertView.setTag(viewHolder);
            }else{
                viewHolder = (ViewHolder) convertView.getTag();
            }

            Student student = students.get(position);

            viewHolder.textView_name.setText(student.stuName);
            viewHolder.textView_stuno.setText(student.stuNo);
            viewHolder.textView_gender.setText(student.stuGender);


            return convertView;
        }

        class ViewHolder {
            TextView textView_name,textView_stuno,textView_gender;
        }
    }
}

Main2Activity

package cn.edu.sicnu.networkjsondemo2;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonArrayRequest;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.Volley;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "MainActivity";

    ListView listView;
    MyAdapter adapter;
    RequestQueue queue;
    ArrayList<Student> students = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        listView = findViewById(R.id.listView);
        adapter = new MyAdapter();
        listView.setAdapter(adapter);
        queue = Volley.newRequestQueue(this);

        downloadJsonData();

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

                Student student = students.get(position);
                Intent intent = new Intent(MainActivity.this, Main2Activity.class);
                intent.putExtra("student", student);
                startActivity(intent);

            }
        });

    }

    public void downloadJsonData(){
        JsonArrayRequest request = new JsonArrayRequest("http://10.0.1.2/piclist.php", new Response.Listener<JSONArray>() {
            @Override
            public void onResponse(JSONArray response) {
                Type type = new TypeToken<ArrayList<Student>>(){}.getType();
                Gson gson = new Gson();
                students = gson.fromJson(response.toString(),type);

                adapter.notifyDataSetChanged();
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {

            }
        });
        queue.add(request);
    }


    class MyAdapter extends BaseAdapter{

        @Override
        public int getCount() {
            return students.size();
        }

        @Override
        public Object getItem(int position) {
            return students.get(position);
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder viewHolder;
            if(convertView==null){
                convertView = LayoutInflater.from(MainActivity.this).inflate(R.layout.stulayout,null);
                viewHolder = new ViewHolder();
                viewHolder.textView_name = convertView.findViewById(R.id.textView_name);
                viewHolder.textView_stuno = convertView.findViewById(R.id.textView_stuno);
                viewHolder.textView_gender = convertView.findViewById(R.id.textView_gender);
                convertView.setTag(viewHolder);
            }else{
                viewHolder = (ViewHolder) convertView.getTag();
            }

            Student student = students.get(position);

            viewHolder.textView_name.setText(student.stuName);
            viewHolder.textView_stuno.setText(student.stuNo);
            viewHolder.textView_gender.setText(student.stuGender);


            return convertView;
        }

        class ViewHolder {
            TextView textView_name,textView_stuno,textView_gender;
        }
    }
}

Student

package cn.edu.sicnu.networkjsondemo2;

import java.io.Serializable;

/**
 * Created by liguiyang on 2018/5/8.
 */

public class Student implements Serializable{
    String stuName;
    String stuNo;
    String stuGender;
    String stuClass;
    String imagePath;

    @Override
    public String toString() {
        return "Student{" +
                "stuName='" + stuName + '\'' +
                ", stuNo='" + stuNo + '\'' +
                ", stuGender='" + stuGender + '\'' +
                ", stuClass='" + stuClass + '\'' +
                ", imagePath='" + imagePath + '\'' +
                '}';
    }
}

package cn.edu.sicnu.networkjsondemo2;

import java.io.Serializable;

/**
* Created by liguiyang on 2018/5/8.
*/

public class Student implements Serializable{
String stuName;
String stuNo;
String stuGender;
String stuClass;
String imagePath;

@Override
public String toString() {
    return "Student{" +
            "stuName='" + stuName + '\'' +
            ", stuNo='" + stuNo + '\'' +
            ", stuGender='" + stuGender + '\'' +
            ", stuClass='" + stuClass + '\'' +
            ", imagePath='" + imagePath + '\'' +
            '}';
}

}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="cn.edu.sicnu.networkjsondemo2.MainActivity">

    <ListView
        android:id="@+id/listView"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>

activity_main2.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="cn.edu.sicnu.networkjsondemo2.Main2Activity">

    <TextView
        android:id="@+id/textView_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="21dp"
        android:layout_marginEnd="29dp"
        android:layout_marginStart="6dp"
        android:layout_marginTop="16dp"
        android:text="TextView"
        android:textSize="18sp"
        app:layout_constraintBottom_toTopOf="@+id/textView_gender"
        app:layout_constraintEnd_toStartOf="@+id/textView_stuno"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/textView_class"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="21dp"
        android:text="TextView"
        android:textSize="18sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/textView_gender"
        app:layout_constraintTop_toBottomOf="@+id/textView_stuno" />

    <TextView
        android:id="@+id/textView_gender"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="34dp"
        android:layout_marginEnd="29dp"
        android:layout_marginStart="6dp"
        android:text="TextView"
        android:textSize="18sp"
        app:layout_constraintBottom_toTopOf="@+id/imageView"
        app:layout_constraintEnd_toStartOf="@+id/textView_class"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView_name" />

    <TextView
        android:id="@+id/textView_stuno"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:text="TextView"
        android:textSize="18sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/textView_name"
        app:layout_constraintTop_toTopOf="parent" />

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginBottom="34dp"
        android:layout_marginEnd="63dp"
        android:layout_marginStart="63dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView_gender"
        app:srcCompat="@mipmap/ic_launcher" />
</android.support.constraint.ConstraintLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/textView_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="30dp"
        android:textColor="#ff0000"
        android:text="TextView" />
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/textView_stuno"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="TextView" />

        <TextView
            android:id="@+id/textView_gender"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="TextView" />
    </LinearLayout>

</LinearLayout>