Android APN切换

Android APN切换

public   class  ApnUtil {
     private   static  Uri PREFERRED_APN_URI  =  Uri
    .parse( " content://telephony/carriers/preferapn " );
     public   static   final  String APN_ID  =   " apn_id " ;
     private   static   final   int  ID_INDEX  =   0 ;
    
     /**
     * get apntype
     *  @param  context
     *  @return
      */
     public   static  String getApnType(Context context){
        String apntype = " nomatch " ;
        Cursor c  =  context.getContentResolver().query(PREFERRED_APN_URI,
                 null ,  null ,  null ,  null );
         if (c  !=   null   &&  c.getCount()  >=   1 ){
            c.moveToFirst();
            String user = c.getString(c.getColumnIndex( " user " ));
             if (user.startsWith(APNNET.CTNET)){
                apntype = APNNET.CTNET;
            } else   if (user.startsWith(APNNET.CTWAP)){
                apntype = APNNET.CTWAP;
            }
        }
        c.close();
         return  apntype;
    }
    
     public   static   void  setSelectedApnKey(Context context,String key) {
        ContentResolver resolver  =  context.getContentResolver();
        ContentValues values  =   new  ContentValues();
        values.put(APN_ID, key);
        resolver.update(PREFERRED_APN_URI, values,  null ,  null );
    }    
}

还需要加个APN设置权限

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

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