Question

我们是否可以使用拦截器来检查网络连接，如果只是连接就继续？

注意：我正在谈论如何使用okhttp拦截器来统一网络连接检查。

Answer 1

当互联网连接发生变化时，您可以使用BroadcastReceiver通知您的应用。

清单：

<receiver android:name="com.example.app.ConnectivityChangeReceiver">
    <intent-filter>
        <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
    </intent-filter>
</receiver>

BroadcastReceiver本身：

public class ConnectivityChangeReceiver extends BroadcastReceiver {

   @Override
   public void onReceive(Context context, Intent intent) {
      if (isOnline(context)) {
         debugIntent(intent, "grokkingandroid");
      }
   }

   private boolean isOnline(Context context) {
      ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
      NetworkInfo netInfo = cm.getActiveNetworkInfo();
      return (netInfo != null && netInfo.isConnected());
   }

   private void debugIntent(Intent intent, String tag) {
      Log.v(tag, "action: " + intent.getAction());
      Log.v(tag, "component: " + intent.getComponent());
      Bundle extras = intent.getExtras();
      if (extras != null) {
         for (String key: extras.keySet()) {
            Log.v(tag, "key [" + key + "]: " +
               extras.get(key));
         }
      }
      else {
         Log.v(tag, "no extras");
      }
   }
}

As in

使用okhttp Interceptor检查网络连接

1 个答案: