安卓：检查3G或无线网络上的或，或不能在Android设备 [英] Android : Check 3G or Wifi network is ON or Available or not on android Device

问题描述

如何检查网络是否可用的Andr​​oid设备编程，会抛出当我们试图用一个网络，如Wifi和功放连接消息或吐司消息; 3G。

How to check that network is available or not on android device programmatically, which throws a message or toast message when we are trying to connect with a network such as Wifi & 3G.

推荐答案

要检查网络，即3G或WiFi是否可用与否，我们可以使用下面的方法开始我们的活动之前进行验证。

TO check whether network i.e 3G or WiFi is available or not we can use below methods to verify before starting our activities.

ConnectivityManager manager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);

//For 3G check
boolean is3g = manager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE)
            .isConnectedOrConnecting();
//For WiFi Check
boolean isWifi = manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI)
            .isConnectedOrConnecting();

System.out.println(is3g + " net " + isWifi);

if (!is3g && !isWifi) 
{ 
Toast.makeText(getApplicationContext(),"Please make sure your Network Connection is ON ",Toast.LENGTH_LONG).show();
} 
 else 
{ 
        " Your method what you want to do "
} 

希望这会帮助别人。

Hope this will help someone.

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