自定义listview读取手机联系人信息

我以手机联系人为例来说明该自定义listview，图片和文字共存。
实现效果如图：

下面是我的思路：

main.xml

这个xml很简单，只有一个listview控件。

<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"    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.test03_36.MainActivity" >    <ListView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:id="@+id/lv" /></LinearLayout>

list_item.xml

下面这个list_item.xml是用来定义listview的每个item样式的，很容易看出来，一个image控件和两个Textview控件

<?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"    android:orientation="horizontal" >    <ImageView         android:id="@+id/image"        android:layout_width="wrap_content"        android:layout_height="match_parent"/>    <LinearLayout         android:layout_width="match_parent"        android:layout_height="match_parent"        android:orientation="vertical">        <TextView             android:layout_width="match_parent"            android:layout_height="wrap_content"            android:id="@+id/name"            android:gravity="left"            android:textSize="20sp"/>        <TextView             android:layout_width="match_parent"            android:layout_height="wrap_content"            android:id="@+id/phone"            android:gravity="left"            android:textSize="10sp"/>    </LinearLayout></LinearLayout>

people.java

此文件定义了一个people实体类，为了方便我们给listview设置数据使用的，listview中的每个item对应了一个people对象。

package com.example.test03_36;public class People {    public String peopleName;    public int ImgId;    public String peopleNumber;    public People() {        super();    }    public People(String peopleName, int imgId, String peopleNumber) {        super();        this.peopleName = peopleName;        ImgId = imgId;        this.peopleNumber = peopleNumber;    }}

PeopleListAdapter.java

自定义adapter，继承自CursorAdapter，因为我们adapter的数据源是一个cursor。

package com.example.test03_36;import android.content.Context;import android.database.Cursor;import android.provider.Contacts;import android.provider.ContactsContract;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.CursorAdapter;import android.widget.ImageView;import android.widget.TextView;public class PeopleListAdapter extends CursorAdapter{    private LayoutInflater mInflater;    public String number;    int i  = 0;    public PeopleListAdapter(Context context, Cursor c) {        super(context, c);        mInflater = LayoutInflater.from(context);    }    //设置item页面的布局效果    @Override    public void bindView(View view, Context context, Cursor cursor) {        ViewHolder viewHolder = new ViewHolder();        //获取到对应的控件对象        viewHolder.peopleImage = (ImageView) view.findViewById(R.id.image);        viewHolder.PeopleName = (TextView) view.findViewById(R.id.name);        viewHolder.peopleNumber = (TextView) view.findViewById(R.id.phone);        //给控件对象设置相应的内容        viewHolder.peopleImage.setBackgroundResource(R.drawable.ic_launcher);        viewHolder.PeopleName.setText(cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)));        viewHolder.peopleNumber.setText(cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)));    }    @Override    public View newView(Context context, Cursor cursor, ViewGroup parent) {        return mInflater.inflate(R.layout.list_item, parent, false);    }    //定义内部类作为占位符组合    class ViewHolder{        ImageView peopleImage;        TextView PeopleName;        TextView peopleNumber;    }}

Mainactivity.java

这里主要是通过getContentResolver方法得到联系人信息的Cursor，然后通过cursor得到PeopleListAdapte的实例adapter，然后listview.setAdapter()就得到了一个自定义联系人listview了。

package com.example.test03_36;import android.app.Activity;import android.content.Intent;import android.database.Cursor;import android.net.Uri;import android.os.Bundle;import android.provider.ContactsContract;import android.util.Log;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.ListView;import android.widget.TextView;public class MainActivity extends Activity implements OnItemClickListener {    private ListView lv;    private Cursor cursor;    private PeopleListAdapter adapter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        lv = (ListView) findViewById(R.id.lv);        //根据getcontentresolver获取手机联系人的信息        cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null);        //将可选内容与arrayadapter联系起来        adapter = new PeopleListAdapter(this, cursor);        lv.setAdapter(adapter);        lv.setOnItemClickListener(this);    }    @Override    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {        //Toast.makeText(MainActivity.this, view+"", 1).show();        TextView textview =(TextView) view.findViewById(R.id.phone);        String number = textview.getText().toString();        Intent intent = new Intent(Intent.ACTION_CALL,Uri.parse("tel:"+number));          startActivity(intent);      }}

添加权限

当然，我们这读取了联系人信息和打电话，需要添加两个权限

<uses-permission android:name="android.permission.READ_CONTACTS" />    <uses-permission android:name="android.permission.CALL_PHONE"/>

大功告成
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