Go语言视频零基础入门到精通

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  大家都知道手机有通讯录，sim卡里也能存储通讯录的，下面就是实现sim卡里的通讯录，这里我们主要用到了cursor这个游标，这个是非常重要，我们需要的权限是android.permission.READ_CONTACTS、
android.permission.WRITE_CONTACTS、android.permission.READ_PHONE_STATE，我们来看看代码是怎么写的：

java代码： package EOE.android.phone;



import java.util.ArrayList;

import java.util.List;

import android.app.ListActivity;

import android.database.Cursor;

import android.net.Uri;

import android.os.Bundle;

import android.provider.ContactsContract;

import android.provider.ContactsContract.Contacts;

import android.util.Log;



@SuppressWarnings("unused")

public class Sim extends ListActivity {



private String tag = "contact";



private List<String> nameList = new ArrayList<String>();



private List<String> mobileList = new ArrayList<String>();



@Override

public void onCreate(Bundle savedInstanceState) {



super.onCreate(savedInstanceState);



setContentView(R.layout.phone_list);



listSimMetadata();



listSimContact();



setListAdapter(new MyAdapter(Sim.this,nameList,mobileList));



}



private void listSimContact(){



Uri uri = Uri.parse("content://icc/adn");



Cursor contacts = managedQuery(uri , null , null , null , null);Log.d("contact", contacts.getCount()+"");



while(contacts.moveToNext()){



String name = contacts.getString(contacts.getColumnIndex("name"));



String number = contacts.getString(contacts.getColumnIndex("number"));



Log.d("contact" , name + " = " + number);



nameList.add(name);



mobileList.add(number);



}

contacts.close();





}



/**

* 会把Sim卡和通讯录的数据全部读取出来

* 重叠返回

* 经测试 SIM卡内共有 _id,name,number,emails 四列数值

* 需要权限

* android.permission.READ_CONTACTS

* android.permission.WRITE_CONTACTS

* android.permission.READ_PHONE_STATE

*/



private void listSimMetadata(){



// Uri uri = Uri.parse("content://sim/adn");



Uri uri = Uri.parse("content://icc/adn");



Cursor contacts = managedQuery(uri , null , null , null , null);

Log.d("contact", contacts.getCount()+"");







while(contacts.moveToNext()){



String [] columns = contacts.getColumnNames();



for(int i = 0 ; i < columns.length ; i++){



String key = contacts.getColumnName(i);



String value = contacts.getString(contacts.getColumnIndex(key));



Log.d("contact" , key + " = " + value);



}



Log.d("contact", "==========================================================");



}



contacts.close();



}



}
Java代码：

package eoe.sgf.contact.phone;



import java.util.List;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.TextView;



public class MyAdapter extends BaseAdapter {



private LayoutInflater layoutInflater;



private List<String> name;



private List<String> mobile;



public MyAdapter(Context context, List<String> name, List<String> mobile) {



layoutInflater = LayoutInflater.from(context);



this.name = name;



this.mobile = mobile;



}



@Override

public int getCount() {



return name.size();



}



@Override

public Object getItem(int position) {



return name.get(position);



}



@Override

public long getItemId(int position) {



return position;



}



@Override

public View getView(int position, View convertView, ViewGroup par) {



ViewHolder holder = null ;



if (convertView == null) {



convertView = layoutInflater.inflate(R.layout.row_layout, null);



holder = new ViewHolder();



holder.name = (TextView) convertView.findViewById(R.id.name);



holder.mobile = (TextView) convertView.findViewById(R.id.mobile);



convertView.setTag(holder);



} else {



holder = (ViewHolder) convertView.getTag();



}



holder.name.setText(name.get(position).toString());



holder.mobile.setText(mobile.get(position).toString());



return convertView;



}



private class ViewHolder {



TextView name;



TextView mobile;



}



}
  布局文件 row_layout.xml

Java代码：

<?xml version="1.0" encoding="utf-8"?>



<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

androidrientation="horizontal"

android:layout_width="fill_parent"

android:layout_height="fill_parent">



<TextView

android:id="@+id/name"

android:layout_width="100dip"

android:layout_height="40px"

android:layout_weight="1.0"

android:textSize="18sp"

android:textColor="#FFFF00"

android:layout_gravity="right"

/>



<TextView

android:id="@+id/mobile"

android:layout_width="wrap_content"

android:layout_height="40px"

android:layout_gravity="center_horizontal"

android:layout_weight="1.0"

android:textSize="16sp"

android:textColor="#008000"

/>



</LinearLayout>



//布局文件 phone_list.xml



<?xml version="1.0" encoding="utf-8"?>



<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

>



<ListView

android:id="@android:id/list"

android:layout_width="wrap_content"

android:layout_height="fill_parent"

>

</ListView>



</LinearLayout>

水中月

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