android小项目之手机通讯录

最新推荐文章于 2021-05-30 10:30:22 发布

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本文介绍了一种在Android应用中读取设备通讯录并将其数据显示在列表视图的方法。通过使用Android提供的ContactsContract API，可以遍历并获取联系人姓名及电话号码等信息。

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MainActivity.java

package com.gdqy.demo;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.ListView;

public class MainActivity extends Activity {
	private ListView lv;
	private myAdapter adapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //调用
        GetNumber.getNumber(this);
        lv =(ListView)findViewById(R.id.lv);
        adapter = new myAdapter(GetNumber.lists, this);
        lv.setAdapter(adapter);
    }
    
}

GetNumber.java

package com.gdqy.demo;

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

import android.content.Context;
import android.database.Cursor;
import android.provider.ContactsContract.CommonDataKinds.Phone;

public class GetNumber {
	public static List<PhoneInfo> lists = new ArrayList<PhoneInfo>();
	public static String getNumber(Context context ){
		//获取手机通讯录query()查询
		Cursor cursor = context.getContentResolver().query(Phone.CONTENT_URI, null, null, null,null);
		//创建号码对象存储
		String phoneNumber;
	    //创建练习人对象
		String phoneName;
		while(cursor.moveToNext()){
			phoneNumber = cursor.getString(cursor.getColumnIndex(Phone.NUMBER));
			phoneName = cursor.getString(cursor.getColumnIndex(Phone.DISPLAY_NAME));
			//创建PhoneInfo对象,将获取的放到里面
			PhoneInfo phoneinfo = new PhoneInfo(phoneName, phoneNumber);
			//放到集合里面
			lists.add(phoneinfo);
			System.out.println(phoneNumber+phoneName);
		}
		return null;
	}

}

PhoneInfo.java

package com.gdqy.demo;
//数据封装
public class PhoneInfo {
	private String name;
	private String number;
//构造方法
	public PhoneInfo(String name, String number) {
    setName(name);
    setNumber(number);
	}
	
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getNumber() {
		return number;
	}
	public void setNumber(String number) {
		this.number = number;
	} 

}

myAdapter.java

package com.gdqy.demo;

import java.util.List;

import org.w3c.dom.Text;

import android.content.Context;
import android.text.NoCopySpan.Concrete;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.TextView;

public class myAdapter extends BaseAdapter{
private List<PhoneInfo>lists;
//承接上下文
private Context  context;
//创建布局
private LinearLayout layout;
public myAdapter(List<PhoneInfo>lists,Context  context){
	this.lists =lists;
	this.context = context;
	
}
//方法复写	
@Override
	public int getCount() {
		return lists.size();
	}
//获取当前数据
	@Override
	public Object getItem(int position) {
		return lists.get(position);
	}

	@Override
	public long getItemId(int position) {
		return position;
	}
	@Override
	public View getView(int position, View converView, ViewGroup parent) {
		//获取加载view的权限
		
/*		//没优化
         LayoutInflater inflater = LayoutInflater.from(context);
		layout = (LinearLayout) inflater.inflate(R.layout.show,null);
		TextView nametv  =(TextView) layout.findViewById(R.id.name);
		TextView numbertv = (TextView) layout.findViewById(R.id.number);
		nametv.setText(lists.get(position).getName());
		numbertv.setText(lists.get(position).getNumber());*/
	//优化
		ViewHolder holder;
		if(converView == null){
			converView = LayoutInflater.from(context).inflate(R.layout.show, null);
		   holder = new ViewHolder();
		   holder.nametv = (TextView) converView.findViewById(R.id.name);
		   holder.numbertv = (TextView) converView.findViewById(R.id.number);
		  //加载内容
		   holder.nametv.setText(lists.get(position).getName());
		   holder.numbertv.setText(lists.get(position).getNumber());
		   converView.setTag(holder);
		}else {
			holder = (ViewHolder) converView.getTag();
			   holder.nametv.setText(lists.get(position).getName());
			   holder.numbertv.setText(lists.get(position).getNumber());
		}
		return converView;
	}
	//创建静态类
	private static class ViewHolder{
		//承载
		TextView nametv;
		TextView numbertv;
	}

}

页面布局：

activity.xml

<RelativeLayout 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=".MainActivity" >

    <ListView
        android:id="@+id/lv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true" >
    </ListView>

</RelativeLayout>

show.xml

<?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" >
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal" >
     <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center_vertical"
        android:orientation="horizontal" >
    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="45dp"
        android:layout_height="45dp"
        android:src="@drawable/ic_launcher" />
        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

            <TextView
                android:id="@+id/name"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="TextView"
                android:textStyle="bold"
                android:textSize="15sp" />

            <TextView
                android:id="@+id/number"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="TextView"
                android:textSize="10sp" />
        </LinearLayout>

    </LinearLayout>
 </LinearLayout>
</LinearLayout>