Android中判斷網絡是否連接實例詳解

Android中判斷網絡是否連接實例詳解

在android中，如何監測網絡的狀態呢，這個有的時候也是十分重要的，方法如下：

public class ConnectionDetector { 
   
  private Context _context; 
   
  public ConnectionDetector(Context context){ 
    this._context = context; 
  } 
 
  public boolean isConnectingToInternet(){ 
    ConnectivityManager connectivity = (ConnectivityManager) _context.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; 
  } 

調用：

ConnectionDetector cd = new ConnectionDetector(getApplicationContext());  
  
Boolean isInternetPresent = cd.isConnectingToInternet(); //  

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