[android] 网络链接类型和渠道详解手机开发

package com.tsh.lottery.net; 
 
import android.content.ContentResolver; 
import android.content.Context; 
import android.database.Cursor; 
import android.net.ConnectivityManager; 
import android.net.NetworkInfo; 
import android.net.Uri; 
 
public class NetUtils { 
    /** 
     * 获取网络状态 
     * @param context 
     * @return 
     */ 
    public static String getNetworkInfo(Context context) { 
        ConnectivityManager cm=(ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); 
        //判断wifi 
        NetworkInfo networkInfo=cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI); 
        if(networkInfo!=null && networkInfo.isConnected()){ 
            return "wifi"; 
        } 
        //判断APN 
        NetworkInfo mobileInfo=cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE); 
        if(mobileInfo!=null && mobileInfo.isConnected()){ 
            //获取APN接入方式,因为权限问题，没有成功 
//            ContentResolver resolver=context.getContentResolver(); 
//            Cursor cursor=resolver.query(Uri.parse("content://telephony/carriers"), null, null, null, null); 
//            if(cursor!=null && cursor.moveToFirst()){ 
//                String proxy=cursor.getString(cursor.getColumnIndex("proxy")); 
//                System.out.println(proxy); 
//            } 
            return "mobile"; 
        } 
        return "no"; 
    } 
}