Android kotlin 判斷網絡狀態

class NetWorkUtils {
    companion object{
        //判斷網絡狀態，有網絡返回true
        fun isConnected(context: Context?) : Boolean{
            if(isNetworkConnected(context) || isWifiConnected(context)){
                return true
            }
            return false
        }
       //判斷手機是否有網絡連接
        fun isNetworkConnected(context: Context?) : Boolean{
            if(context != null){
                val mConnectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
                val mNetworkInfo = mConnectivityManager.activeNetworkInfo
                if(mNetworkInfo != null){
                    return mNetworkInfo.isAvailable
                }
            }
            return false
        }

        //判斷wifi網絡是否可用
        fun isWifiConnected(context: Context?) : Boolean{
            if(context != null){
                val mConnectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
                val mNetworkInfo = mConnectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI)
                if(mNetworkInfo != null){
                    return mNetworkInfo.isAvailable
                }
            }
            return false
        }
    }
}

//判斷網絡狀態
        if(!NetWorkUtils.isConnected(mActivity)){
            //處理無網絡狀態
            return
        }