Androidはインターネットが正常に接続できるかどうかをチェックします

public boolean note_Intent(Context context) {
		ConnectivityManager con = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
		NetworkInfo networkinfo = con.getActiveNetworkInfo();
		boolean isAvalible = false;
		if (networkinfo == null || !networkinfo.isAvailable()) {
			//        
			Toast.makeText(context.getApplicationContext(), "      Internet，   Internet！", Toast.LENGTH_SHORT).show();
			return false;
		}

		if (networkinfo != null && networkinfo.isConnected()) {
			if (networkinfo.getState() == NetworkInfo.State.CONNECTED) {
				isAvalible = true;
			}
		}
		boolean wifi = con.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnectedOrConnecting();
		if (!wifi) { //     wifi
			Toast.makeText(context.getApplicationContext(), "     WIFI  Internet，     WIFI     ！", Toast.LENGTH_SHORT).show();
		}
		return isAvalible;
	}