I’m new at working with WIFI Network connected devices so please excuse my ignorance. I need to be able to receive GPS location data via the GDL90 protocol from a WIFI connected external GPS and integrate that into my app.
How do I access the data? JSON? Other? I’ve looked at the GDL90 protocol and am not seeing anything that stands out as a starting point. Again, I’ve not worked with network data so I’m not sure what I know or don’t know.
Once I’ve figured out how to access and read the data, I’ll be good from there, but I’ve hit a wall.
Any help/guidance will be appreciated.
Following this Apple documentation using CoreLocation will answer all your technical questions:
https://developer.apple.com/documentation/corelocation/
Related
Recently I downloaded My Data Mgr from app store and they seem to track data usage of each app through vpn.
I don't have enough knowledge in vpn and setting up one. But I guess they are setting up a local vpn and tunneling all the network data through this vpn and analysing the data for each app.
Can anyone help me understand this workflow and also how can I achieve it.
Here is the screen shot of VPN config used by My data manager
I know it's a very broad question, But I want to be pointed at a specific direction.
I found a similar question, please don't mark it as duplicate. There was no proper answer given there.
I will be using OBD2 device to get data form a car. I don't have the dongle yet, but am reading into how things should be done. As far as I understand the device should be with BLE on and should scan for peripherals with some specific service.
For example I need to get the speed of the vehicle. How should I know what is the UUID of the service I am looking for and what are the UUIDs of its characteristics and possibly some details about the data that should be received. For devices using GATT profiles for example they could be found here: https://www.bluetooth.com/specifications/gatt/services . But I don't find any such documentation for OBD2. I found this answer: here and the first one here. As far as I understand they suggest I need to look through all peripherals and all services there and try all characteristics to find the needed ones and distinguish them by the response. Is this the only way to do this? I found also this project: here where some UUID is used but I cannot understand where it comes from. Any suggestions how to get the needed UUID-s?
My app should scan Wifi signals around and list the network's name and its RSSI.
I can't find any clue on Google about how to do it. Could someone give an example or at least point somewhere else where I can find the answer?
I dont think its possible ! It doesnt matter if its Swift or Objective-C nor C++, the basic principle of iOS is that only system can connect to WiFi or turn on off those system setting. All you can get is info about the currently connected network. App sandbox in ios limits all other possibility.
It is only possible to get the SSID of the network that you are currently connected to.
Okay, I have been successful so far in my core bluetooth journeys. I just need to clarify a few things regarding what the best practises are for using bluetooth in my app. My queries are:
First of all, I want to know how best I can optimize my code. Do i have to discover and connect for every page that I want to use bluetooth on? How is it possible for me to connect to a peripheral and use that connection on the next page in the app without having to call the didConnectPeripheral: function everywhere?
Secondly, I have been meaning to connect two peripheral devices onto my app. I know that this is possible, but how does it work? Is the connection timeshared or are they happening simultaneously? Do I have to disconnect one to be able to access the other? What is the optimal approach to connect two devices to the app without each other's connection interfering with each other?
Any directions would be much appreciated! Cheers
No, you don't need to connect to device for each 'screen' you have. Create one CBCentralManager, connect to given device once and connection will exist(unless you explicitly tell it to disconnect) for the whole lifecycle of this CBCentralManager.
You can connect to several CBPeripheral devices simultaneously by using single CBCentralManager but CBPeripheral cannot connect to anyone, it just accepts connections from CBCentral's.
Recently I've released my own wrapper around CoreBluetooth technology called YRBluetooth. It simplifies a lot of CoreBluetooth things by providing another abstraction level. There you can find simple demo chat application that was built using YRBluetooth.
I am currently using an adapted reachabilty framework based on Apple's sample code.
The framework works fine, however it provides false postives.
If the user is attached to a wifi network where they are required to login before having a valid connection, the framework shows as an active connection when in fact it isn't.
An example of this is Starbucks' wifi where you must provide an email address before you get online.
Is there a way around this without pinging a certain address?
Currently I am using the reachabilityWithHostname function
Thanks
Daniel
Update as provided by the link below i see this is a limitation of the framework. Are others finding away to alert the user of this?
If your computer is connected to a Wi-Fi access point, but that access point's internet connection is down, reachability will tell you that yes, you have a network connection
Check out this link
Networking is playing an ever more important role in application
development, and Apple's reachability API is a valuable tool in making
network-centric apps play nicely with varying real-world conditions.
Today I'm going to give an overview of the reachability API, what it
does, and how to use it.
This should help you.