android 中检查设备是否有网络可用

public boolean checkNetWorkStatus() {   
        boolean netSataus = false;   
           
        ConnectivityManager cwjManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);   
        cwjManager.getActiveNetworkInfo();   
        if (cwjManager.getActiveNetworkInfo() != null) {   
            netSataus = cwjManager.getActiveNetworkInfo().isAvailable();   
        }   
        return netSataus;   
    } 

　　

 

 

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