Android学生信息管理系统（2）查看全部学生信息界面设计

点击查看全部信息按钮弹出listview全部学生信息内容，也就是按钮5的点击事件，下期会出对应学生信息的增加，删除和修改！

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);
    }
});
    }
}

运行效果图