问ConnectivityManager getNetworkInfo(int)已弃用

EN

@Suppress("DEPRECATION")
fun isNetworkAvailable(context: Context): Boolean {
    try {
        val cm = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
        return if (Build.VERSION.SDK_INT > 22) {
            val an = cm.activeNetwork ?: return false
            val capabilities = cm.getNetworkCapabilities(an) ?: return false
            capabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
        } else {
            val a = cm.activeNetworkInfo ?: return false
            a.isConnected && (a.type == ConnectivityManager.TYPE_WIFI || a.type == ConnectivityManager.TYPE_MOBILE)
        }
    } catch (e: Exception) {
        e.printStackTrace()
    }
    return false
}

fun isInternetOn(context: Context): Boolean {
   val cm = context.getSystemService(Context.CONNECTIVITY_SERVICE) as? ConnectivityManager
   val activeNetwork = cm?.activeNetworkInfo
   return activeNetwork != null && activeNetwork.isConnected
}

@RequiresPermission(allOf = [
    Manifest.permission.ACCESS_NETWORK_STATE, 
    Manifest.permission.INTERNET
])
fun isInternetAvailable(context: Context): Boolean {
    val connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager?
    val activeNetworkInfo = connectivityManager!!.activeNetworkInfo
    return activeNetworkInfo != null && activeNetworkInfo.isConnected
}