在 ANDROID 中检查互联网连接 [英] Check internet connection in ANDROID

问题描述

您好，我有基于通过互联网检索到的数据的应用程序...

Hello I have application based on data retrieved over internet...

如果没有可用的连接，我该如何处理我的应用程序?

How can I handle my app in case there is no connection available?

我可以检测到与

ConnectivityManager cm = (ConnectivityManager) 
getSystemService(this.CONNECTIVITY_SERVICE);
return cm.getActiveNetworkInfo().isConnectedOrConnecting();

它工作得很好......但是当我知道没有连接时，我怎样才能防止 Force Erros?我想显示一条消息 - 例如:抱歉！没有可用的互联网连接！"而不是我的申请粉碎...

It works fine... But how can I prevent Force Erros when I know there is no connection? I would like a message to be shown - something like: "Sorry! There is no internet connection available!" and not my application to crush...

推荐答案

 /**
   * Checks if the device has Internet connection.
   * 
   * @return <code>true</code> if the phone is connected to the Internet.
   */
  public static boolean hasConnection() {
    ConnectivityManager cm = (ConnectivityManager) MbridgeApp.getContext().getSystemService(
        Context.CONNECTIVITY_SERVICE);

    NetworkInfo wifiNetwork = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
    if (wifiNetwork != null && wifiNetwork.isConnected()) {
      return true;
    }

    NetworkInfo mobileNetwork = cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
    if (mobileNetwork != null && mobileNetwork.isConnected()) {
      return true;
    }

    NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
    if (activeNetwork != null && activeNetwork.isConnected()) {
      return true;
    }

    return false;
  }

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