Listview和Adapter作业

Posted 2020-09-16

安卓作业：使用ListView和自定义Adapter完成列表信息显示

1.XML主布局文件代码

<?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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="cn.edu.niit.liebiaoxinxixianshi.QiuActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:id="@+id/out"
        >

    </LinearLayout>

</RelativeLayout>
2.四个TextView布局：
<ListView 
 android:layout_width="match_parent"
 android:layout_height="match_parent" 
 android:id="@+id/list"
 android:scrollbars="vertical"/>
 <LinearLayout
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:orientation="vertical"> 
<TextView 
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:id="@+id/List1"
 android:text="@string/name"/>
 <TextView 
android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:id="@+id/List2"
 android:text="@string/age"/>
 <TextView
 android:layout_width="wrap_content" 
 android:layout_height="wrap_content"
 android:id="@+id/List3"
 android:text="@string/mail"/>
 <TextView
 android:layout_width="wrap_content" 
 android:layout_height="wrap_content" 
 android:id="@+id/List4"
 android:text="@string/address"/>
3.定义String<resources>

    <string name="app_name">liebiaoxinxixianshi</string>
    <string name="list">目录</string>
    <string name="name">姓名</string>
    <string name="age">年龄</string>
    <string name="mail">邮箱</string>
</resources>
4.java文件
package com.example.ershiqiapplication;
 
 import android.app.Fragment;
 import android.app.FragmentTransaction;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;

 public class MainActivity extends AppCompatActivity { 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
 super.onCreate(savedInstanceState); 
 setContentView(R.layout.activity_main);
 FragmentTransaction transaction = getFragmentManager().beginTransaction();
 Fragment fragment=new ListViewFragment();
 transaction.add(R.id.out,fragment);
 transaction.commit();//显示fragment 
} 
}

增加数据，数据准备：
datas.add(new Classinfo("姓名：蔡志坤","年龄：25","邮箱：[email protected]","地址：厦门市")); 
datas.add(new Classinfo("姓名：李杰华","年龄：25","邮箱：[email protected]","地址：漳州市")); 
datas.add(new Classinfo("姓名：张亮","年龄：25","邮箱：[email protected]","地址：厦门市"));
datas.add(new Classinfo("姓名：陈旭","年龄：25","邮箱：[email protected]","地址：厦门市")); 
datas.add(new Classinfo("姓名：刘玄德","年龄：25","邮箱：[email protected]","地址：福州市"));
自定义Adapter 通过Adapter来获得数据