Android student information management system (2) View all student information interface design

Click the View All Information button to pop up all the student information content of the listview, that is, the click event of button 5, and the corresponding student information will be added, deleted and modified in the next issue!

activity_main3.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    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=".Main3Activity"
    android:orientation="vertical">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="45dp"
        android:text="学生名单"
        android:textSize="18sp"
        android:textColor="#FFFFFF"
        android:background="#FF8F03"
        android:gravity="center"/>

    <ListView
        android:id="@+id/lv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:listSelector="#3EFF9800" />

</LinearLayout>

 list_item.xlml

<?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="match_parent"
    android:padding="16dp">

    <ImageView
        android:id="@+id/iv"
        android:layout_width="120dp"
        android:layout_height="90dp"
        android:layout_centerVertical="true" />

    <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true"
        android:layout_marginLeft="10dp"
        android:layout_toRightOf="@+id/iv">

        <TextView
            android:id="@+id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="修罗"
            android:textColor="#000000"
            android:textSize="20sp" />

        <TextView
            android:id="@+id/tv_price"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/title"
            android:layout_marginTop="10dp"
            android:text="英雄定位："
            android:textColor="#FF8F03"
            android:textSize="20sp" />

        <TextView
            android:id="@+id/price"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/title"
            android:layout_marginTop="10dp"
            android:layout_toRightOf="@+id/tv_price"
            android:text="刺客/战士"
            android:textColor="#FF8F03"
            android:textSize="20sp" />
    </RelativeLayout>
</RelativeLayout>

 MainActivity.java

package com.example.android;


import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;


public class Main3Activity extends Activity implements AdapterView.OnItemClickListener, AdapterView.OnItemLongClickListener {
    private ListView mListView;
    private String[] titles = {"橘右京", "马超", "李信", "关羽","杨戬","瑶","李白","干将莫邪"};
    private String[] prices = {"刺客/战士", "战士", "战士", "战士", "战士","辅助","刺客","法师"};

    private int[] icons = {R.drawable.apple, R.drawable.cake, R.drawable.table, R.drawable.kiwifruit,
            R.drawable.wireclothes,R.drawable.yao,R.drawable.iphone5s,R.drawable.gan};

    protected void onCreate(Bundle saveInstanceState) {
        super.onCreate(saveInstanceState);
        setContentView(R.layout.activity_main3);

        mListView = (ListView) findViewById(R.id.lv);

        MyBaseAdaPter mAdapter = new MyBaseAdaPter();

        mListView.setAdapter(mAdapter);
        
    }


    class MyBaseAdaPter extends BaseAdapter {
        @Override
        public int getCount() {
            return titles.length;
        }

        @Override
        public Object getItem(int position) {
            return titles[position];
        }

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

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder holder = null;
            if (convertView == null) {
                convertView = View.inflate(Main3Activity.this, R.layout.list_item, null);
                holder = new ViewHolder();
                holder.title = (TextView) convertView.findViewById(R.id.title);
                holder.price = (TextView) convertView.findViewById(R.id.price);
                holder.iv = (ImageView) convertView.findViewById(R.id.iv);
                convertView.setTag(holder);
            } else {
                holder = (ViewHolder) convertView.getTag();
            }
            holder.title.setText(titles[position]);
            holder.price.setText(prices[position]);
            holder.iv.setBackgroundResource(icons[position]);
            return convertView;
        }
    }

    static class ViewHolder {
        TextView title;
        TextView price;
        ImageView iv;
    }
}

 Main2Activity.java

package com.example.android;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class Main2Activity extends AppCompatActivity {
private Button btn5;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
btn5=findViewById(R.id.btn5);
btn5.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        Intent intent=new Intent(Main2Activity.this,Main3Activity.class);
        startActivity(intent);
    }
});
    }
}

Running effect diagram