Android APN设置获取APN列表_android9 telephony apn list

作者：木道寻08 | 2024-08-16 12:12:05

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android9 telephony apn list

由于Android对于APN的网络API没有公开，不过我们可以阅读源代码，然后进行数据库操作，系统会自动监听数据库的变化，从而实现开启或者关闭APN。

大家可以研究一下frameworks/base/core/java/android/provider/Telephony.java这个类，

比较重要的就是 URI 和数据库字段： content://telephony/carriers

字段可以在Telephony.java中找到。

其实原理很简单：

1 、当开启APN的时候，设置一个正确的移动或者联通的APN

2、关闭的时候设置一个错误APN就会自动关闭网络

请看代码：Activity：


package cc.mdev.apn;  
  
import java.util.ArrayList;  
import java.util.List;  
  
import android.app.Activity;  
import android.content.ContentValues;  
import android.database.Cursor;  
import android.net.Uri;  
import android.os.Bundle;  
import android.util.Log;  
import android.view.View;  
import android.widget.Button;  
  
  
/** 
 * 這裡是Activity 
 * @author SinFrancis wong 
 * @site http://mdev.cc 
 * @wiki http://mdev.cc/wiki 
 * @since 2010-01-08 
 */  
public class Main extends Activity {  
    /** Called when the activity is first created. */  
    Uri uri = Uri.parse("content://telephony/carriers");  
    @Override  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.main);  
          
        Button open= (Button) findViewById(R.id.open);  
        Button close= (Button) findViewById(R.id.close);  
          
        open.setOnClickListener(new View.OnClickListener() {  
              
            @Override  
            public void onClick(View v) {  
                openAPN();  
            }  
        });  
          
          
        close.setOnClickListener(new View.OnClickListener() {  
              
            @Override  
            public void onClick(View v) {  
                closeAPN();  
            }  
        });  
          
    }  
      
    public  void openAPN(){  
          
        List<APN> list = getAPNList();  
        for (APN apn : list) {  
            ContentValues cv = new ContentValues();  
            cv.put("apn", APNMatchTools.matchAPN(apn.apn));  
            cv.put("type", APNMatchTools.matchAPN(apn.type));  
            getContentResolver().update(uri, cv, "_id=?", new String[]{apn.id});  
              
        }  
    }  
      
    public void closeAPN(){  
        List<APN> list = getAPNList();  
        for (APN apn : list) {  
            ContentValues cv = new ContentValues();  
            cv.put("apn", APNMatchTools.matchAPN(apn.apn)+"mdev");  
            cv.put("type", APNMatchTools.matchAPN(apn.type)+"mdev");  
            getContentResolver().update(uri, cv, "_id=?", new String[]{apn.id});  
              
        }  
    }  
      
    private List<APN> getAPNList(){  
        String tag = "Main.getAPNList()";  
          
        //current不为空表示可以使用的APN  
        String  projection[] = {"_id,apn,type,current"};  
        Cursor cr = this.getContentResolver().query(uri, projection, null, null, null);  
          
        List<APN> list = new ArrayList<APN>();  
          
        while(cr!=null && cr.moveToNext()){  
            Log.d(tag, cr.getString(cr.getColumnIndex("_id")) + "  " + cr.getString(cr.getColumnIndex("apn")) + "  " + cr.getString(cr.getColumnIndex("type"))+ "  " + cr.getString(cr.getColumnIndex("current")));  
            APN a = new APN();  
            a.id = cr.getString(cr.getColumnIndex("_id"));  
            a.apn = cr.getString(cr.getColumnIndex("apn"));  
            a.type = cr.getString(cr.getColumnIndex("type"));  
            list.add(a);  
        }  
        if(cr!=null)  
        cr.close();  
        return list;  
    }  
      
      
    public static class APN{  
        String id;  
        String apn;  
        String type;  
    }  
      
}

APNMatchTools.java


package cc.mdev.apn;  
  
  
  
/** 
 * 這裡是APN匹配，用於匹配移動或者聯通的APN 
 * @author SinFrancis wong 
 * @site http://mdev.cc 
 * @wiki http://mdev.cc/wiki 
 * @since 2010-01-08 
 * 
 */  
public final class APNMatchTools {  
      
    public static class APNNet{  
        /** 
         * 中国移动cmwap 
         */  
        public static String CMWAP = "cmwap";  
          
        /** 
         * 中国移动cmnet 
         */  
        public static String CMNET = "cmnet";  
          
        //中国联通3GWAP设置        中国联通3G因特网设置        中国联通WAP设置        中国联通因特网设置  
        //3gwap                 3gnet                uniwap            uninet  
          
          
        /** 
         * 3G wap 中国联通3gwap APN  
         */  
        public static String GWAP_3 = "3gwap";  
          
        /** 
         * 3G net 中国联通3gnet APN  
         */  
        public static String GNET_3="3gnet";  
          
        /** 
         * uni wap 中国联通uni wap APN  
         */  
        public static String UNIWAP="uniwap";  
        /** 
         * uni net 中国联通uni net APN  
         */  
        public static String UNINET="uninet";  
    }  
  
  
  
    public static String matchAPN(String currentName) {          
        if("".equals(currentName) || null==currentName){  
            return "";  
        }  
        currentName = currentName.toLowerCase();  
        if(currentName.startsWith(APNNet.CMNET))  
            return APNNet.CMNET;  
        else if(currentName.startsWith(APNNet.CMWAP))  
            return APNNet.CMWAP;  
        else if(currentName.startsWith(APNNet.GNET_3))  
            return APNNet.GNET_3;  
        else if(currentName.startsWith(APNNet.GWAP_3))  
            return APNNet.GWAP_3;  
        else if(currentName.startsWith(APNNet.UNINET))  
            return APNNet.UNINET;  
        else if(currentName.startsWith(APNNet.UNIWAP))  
            return APNNet.UNIWAP;  
        else if(currentName.startsWith("default"))  
            return "default";  
        else return "";  
       // return currentName.substring(0, currentName.length() - SUFFIX.length());  
    }  
      
      
}

APN权限

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

Android对于APN的网络API没有公开，不过我们可以阅读源代码，然后进行数据库操作，系统会自动监听数据库的变化，从而实现开启或者关闭APN。

content://telephony/carriers                               //取得全部apn列表
content://telephony/carriers/preferapn                //取得当前设置的apn
content://telephony/carriers/current                   //取得current=1的apn列表


public class APNList extends ListActivity implements OnItemClickListener{
         public static final Uri APN_TABLE_URI = Uri.parse("content://telephony/carriers");
         public static final Uri PREFERRED_APN_URI =Uri.parse("content://telephony/carriers/preferapn");          
         public static final Uri CURRENT_APN_URI =Uri.parse("content://telephony/carriers/current");  
 
         @Override
            protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                               
                Cursor cr = this.getContentResolver().query(PREFERRED_APN_URI, null, null, null, null); 
                String[] mStrings=new String[cr.getCount()];
                int i=0;
                while(cr!=null && cr.moveToNext()){  
                        mStrings[i]="ID:"+cr.getString(cr.getColumnIndex("_id"))+
                        "\n"+"name:"+cr.getString(cr.getColumnIndex("name"))+
                        "\n"+"numeric:"+cr.getString(cr.getColumnIndex("numeric"))+
                        "\n"+"mcc:"+cr.getString(cr.getColumnIndex("mcc"))+
                        "\n"+"mnc:"+cr.getString(cr.getColumnIndex("mnc"))+
                        "\n"+"apn:"+cr.getString(cr.getColumnIndex("apn"))+
                        "\n"+"user:"+cr.getString(cr.getColumnIndex("user"))+
                        "\n"+"server:"+cr.getString(cr.getColumnIndex("server"))+
                        "\n"+"password:"+cr.getString(cr.getColumnIndex("password"))+
                        "\n"+"proxy:"+cr.getString(cr.getColumnIndex("proxy"))+
                        "\n"+"port:"+cr.getString(cr.getColumnIndex("port"))+
                        "\n"+"mmsproxy:"+cr.getString(cr.getColumnIndex("mmsproxy"))+
                        "\n"+"mmsport:"+cr.getString(cr.getColumnIndex("mmsport"))+
                        "\n"+"mmsc:"+cr.getString(cr.getColumnIndex("mmsc"))+
                        "\n"+"authtype:"+cr.getString(cr.getColumnIndex("authtype"))+ 
                        "\n"+"type:"+cr.getString(cr.getColumnIndex("type"))+ 
                        "\n"+"current:"+cr.getString(cr.getColumnIndex("current"));
               
                    i++;
                } 
                
                setListAdapter(new ArrayAdapter<String>(this,
                        android.R.layout.simple_list_item_1, mStrings));
                getListView().setOnItemClickListener(this);
         }
        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
                // TODO Auto-generated method stub
                SetDefaultAPN(arg2+1);
        }
        
          /*
     * Set an apn to be the default apn for web traffic
     * Require an input of the apn id to be set
     */
    public boolean SetDefaultAPN(int id)
    {
        boolean res = false;
        ContentResolver resolver = getContentResolver();
        ContentValues values = new ContentValues();
        
        //See /etc/apns-conf.xml. The TelephonyProvider uses this file to provide 
        //content://telephony/carriers/preferapn URI mapping
        values.put("apn_id", id); 
        Log.d("", "change1:");
        try
        {
           int cc=resolver.update(PREFERRED_APN_URI, values, null, null);
           Log.d("", "change:"+cc);
        }
        catch (SQLException e)
        {
            Log.d("", "change"+e.getMessage());
        }
         return res;
    }
}

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Android APN设置 获取APN列表_android9 telephony apn list

Android APN设置获取APN列表_android9 telephony apn list