ListView和Adapter信息显示

<?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="com.example.ershiqiapplication.MainActivity">

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

</LinearLayout></RelativeLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="com.example.ershiqiapplication.ListViewFragment">

<!-- TODO: Update blank fragment layout -->    <ListView        android:layout_width="match_parent"        android:layout_height="match_parent"        android:id="@+id/ListView"        >

</ListView>

</LinearLayout>

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

<TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="姓名：蔡志坤"        android:textSize="20sp"        android:id="@+id/tv_xm"        />    <TextView        android:id="@+id/tv_nl"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:textSize="20sp"        android:text="年龄：25"        />    <TextView        android:id="@+id/tv_yx"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="邮箱：[email protected]"        />    <TextView        android:id="@+id/tv_dz"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="地址：厦门市"        android:textSize="20sp"        /></LinearLayout>

package com.example.yz.myapplicatio9n;

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.LinearLayout,fragment);        transaction.commit();    }}

import android.widget.ListView;

import java.util.ArrayList;import java.util.List;

public class  istViewFragment extends Fragment {    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container,                             Bundle savedInstanceState) {        View view=inflater.inflate(R.layout.fragment_list_view, container, false);

List<Classinfo>datas= new ArrayList<>();        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：刘玄德","年龄：25","邮箱：[email protected]","地址：福州市"));        ListView listView =(ListView)view.findViewById(R.id.ListView);        CustomAdapter  adapter = new CustomAdapter(getActivity(),datas);        listView.setAdapter(adapter);        return view;    }

}

package com.example.yz.myapplicatio9n;

import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.TextView;

import java.util.List;

/** * Created by 栋栋栋 on 2017/4/27. */

public class CustomAdapter extends BaseAdapter {    private List<Classinfo> datas ;    private Context content;    //通过构造方法获取需要的对象：上下文的数据    public CustomAdapter(Context content, List datas){        this.content=content;        this.datas=datas;    }

@Override    public int getCount() {        return datas.size();//一定要返回list数据的长度，非常重要！！！    }

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

@Override    public long getItemId(int position) {        return position;    }    //自定义Adapter一定要重写getView()方法    //int i ：datas的索引，为了获取所在位置的数据    //View view:这条数据的显示的载体    @Override    public View getView(int i, View view, ViewGroup viewGroup) {        if (view ==null){            view= LayoutInflater.from(content).inflate(R.layout.list_item,null);        }        //获取控件        TextView yx=(TextView)view.findViewById(R.id.tv_yx);        TextView dz = (TextView)view.findViewById(R.id.tv_dz);        TextView xm=(TextView)view.findViewById(R.id.tv_xm);        TextView nl=(TextView)view.findViewById(R.id.tv_nl);        //赋值        Classinfo classInfo=datas.get(i);        yx.setText(classInfo.getYx());        dz.setText(classInfo.getDz());        xm.setText(classInfo.getXm());        nl.setText(classInfo.getNl());        //返回view        return view;    }}

package com.example.yz.myapplicatio9n;

/** * Created by 栋栋栋 on 2017/4/27. */

public class Classinfo {    private String xm;    private String nl;    private String yx;    private String dz;

public Classinfo(String xm, String nl, String yx, String dx) {        this.xm=xm;        this.nl=nl;        this.yx=yx;        this.dz=dx;    }

public String getXm() {        return xm;    }

public void setXm(String xm) {        this.xm = xm;    }

public String getNl() {        return nl;    }

public void setNl(String nl) {        this.nl = nl;    }

public String getYx() {        return yx;    }

public void setYx(String yx) {        this.yx = yx;    }

public String getDz() {        return dz;    }

public void setDz(String dz) {        this.dz = dz;    }}