在Android中檢查網絡

Question

如何檢查Android中的任何一種網絡狀態？

Answer 1

if (Context.getSystemService(Context.CONNECTIVITY_SERVICE).getNetworkInfo(
     ConnectivityManager.TYPE_MOBILE) 
    || Context.getSystemService(Context.CONNECTIVITY_SERVICE).getNetworkInfo(
     ConnectivityManager.TYPE_WIFI) { 

    // do something 
} 

Answer 2

對於檢查網絡這個功能會幫助你。

`public boolean InternetConnection() 

{ 
     ConnectivityManager connectivity = (ConnectivityManager) this.getSystemService(Context.CONNECTIVITY_SERVICE); 
     if (connectivity != null) { 
      NetworkInfo[] info = connectivity.getAllNetworkInfo(); 
      if (info != null) { 
       for (int i = 0; i < info.length; i++) { 
        if (info[i].getState() == NetworkInfo.State.CONNECTED) { 
         return true; 
        } 
       } 
      } 
     } 
     return false; 
    }` 

如果網絡存在，它將返回true，否則它將返回false。

Answer 3

可以檢查網絡的可用性或不

ConnectivityManager connectivityManager 
    = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); 
    NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();