I always thought that once I choose to receive a phone call my aplication is shut down.
Now I hear of some SDK 3 based application that keeps sending location data while a phone call is being answered?
Is it possible? (Not a jail broken iPhone)
How?
When a call is in progress and one or the two calling parties are being carried in moving transport the system has to inform the network through the mast or antenna that the person or device is moving from one cell to another and then the system can switch the call in progress to the next cell being approached in the direction of travel. When a more direct or non-cell network is in use then the antenna has to send or receive the signal sometimes at different horizontal angles to a series of geographical positions and if necessary pass the call to a later antenna. Fast moving transport sometimes beats the system. In the situation you describe the location could be sent because the phone user has selected a 'send my position' or 'position locator' facility on their phone or it is a phone for officials, officers or children who may be at risk.
Related
I am working on a scheduling and routing app that uses Google Maps to create my route to the appointment location. Upon arriving at the appointment location, the app sets up a geo-fence around that location. The app is designed to send an eta text to the next appointment when I leave out of the geo-fence. Since I am likely to drive through the geo-fence due to either missing the address or looking for a parking spot, I have a timer set for 3 minutes. This requires that I stay inside of the geo-fence for 3 minutes. Once the 3 minutes elapses, then the app is set to send my eta text to the next appointment once I leave out of the fence. My location on the map appears to be determined by the triangulation of the cell towers. Here's the problem, I'm testing in a rural area with poor cell signals and limited towers. This reduces the accuracy of my actual location as determined by the triangulation of the cell towers. It is causing the icon that represents my location to bounce in and out of the geo-fence without completing the 3 minute time requirement. This is most likely due to the poor cell connection and network. Is there a way for me use only the GPS feature of the phone/Google Maps and disable the cell network from trying to position me? This doesn't happen in urban areas where there are more towers and a strong network.
I'm using code from Google's sample game "ButtonClicker2000" found here: https://github.com/playgameservices/android-basic-samples
I have 3 androids running this game in genymotion plus one on my own phone, debugging them all from android studio. I've gotten to a point where I'm trying to gracefully handle disconnect in the event of network issues. The way I'm simulating network issues is toggling the wifi on my phone. (on or off, same behavior) After that, real time messages from my phone are no longer being received by the virtual devices, and my phone is no longer receiving real time messages from the other devices. However, my phone never enters onDisconnect() and the other devices never enter onPeersDisconnected. If I exit the app on my phone after communication ceases, onPeerLeft fires on the other devices.
How can I either ensure communication between devices in a game isn't lost in the likely event that a user at some point comes in or out of range of their wifi? If that's not possible, how can I at least ensure the onDisconnect event is firing from the offending device and onPeersDisconnected event is firing on the others?
If we're going with what the documentation states, onDisconnect usually happens when there's a problem with the remote services (crash or resource problem). having the WiFi turned off doesn't look like it fits with those criteria. [onPeersDisconnected](https://developers.google.com/android/reference/com/google/android/gms/games/multiplayer/realtime/RoomStatusUpdateListener#onPeersDisconnected(com.google.android.gms.games.multiplayer.realtime.Room, java.util.List)) is called when the participants are disconnected from the room.
Determine if the onP2PConnected is called when its connected and onP2PDisconnected when disconnected (hopefully this can catch WiFi toggling cases) since I think its more appropriate when you're using real-time multiplayer.
You can also read more about it in the Real-time Multiplayer section of the documentaiton.
Hope this helps!
I want to listen a notification when a connected bluetooth device gets out of range. I want that notification in both cases [either the app is running or the app is in suspended state].
As per Developer Documentation: Core Location Documentation
https://developer.apple.com/library/ios/documentation/CoreLocation/Reference/CLLocationManager_Class/index.html#//apple_ref/occ/instm/CLLocationManager/startMonitoringSignificantLocationChanges.
Apps can expect a notification as soon as the device moves 500 meters or more from its previous notification. It should not expect notifications more frequently than once every five minutes. If the device is able to retrieve data from the network, the location manager is much more likely to deliver notifications in a timely manner.
For detailed info on how to get location services follow this link
http://mobileoop.com/getting-location-updates-for-ios-7-and-8-when-the-app-is-killedterminatedsuspended
I need to pass messages between a WP8 app and a Windows Store app. It's sort of a "peer-to-peer" situation in that they will both send and respond to messages from each other, but it's also sort of a "client/server" situation in that the Windows Store app will have 1..N WP8 apps that it is conversing with.
After being beaten about the head and shoulders for my first ideas of trying to use either email or SkyDrive rather sneakily, I'm now considering these possible architectures:
1) Direct Push Notifications
(a) The WP8 app sends Push Notifications to the Windows Store app via a URI it is provided after this conversation takes place:
Windows Store app: "Will you send me updates?"
WP8 app: "Yes."
Windows Store app: "Okay, here's where to send them."
(b) Windows 8 responds to the arriving msgs.
2) Push-Pull using the Cloud
(a) WP8 sends data to the cloud (Azure?)
(b) Windows 8 app periodically polls for it
3) SSL (Using components from someone like /NSoftware (IP*Works))
The messages from WP8 are rather frequent (every 15 minutes, on average), but small/short (short enough to be a Tweet, in fact). The Windows 8 app deals with these msgs "behind the scenes." The user is not aware of them until he runs the associated app.
There weren't any question marks :) but here's my take:
Push notifications would certainly work, but given your "behind the scenes" comment, you may want to look specifically into "raw notifications", which do use the push notification mechanism but aren't associated with UI (like a tile, toast or badge). Pushed toast notifications, for instance, are dropped if the client if off-line.
The frequency of the messages makes me leery of the polling approach given impact on battery life (that said, not sure how a push notification with background task would compare). With the polling approach too you'd need to have some way on your "cloud service" to maintain messages (storage) and then feed back the right messages on each poll, etc. You'd also need to handle the scaling and availability aspects that WNS would do 'free.' Not rocket science, but more work. The push notification is kind of 'fire-and-forget'.
With sockets, you might have more control to the extent the sandboxed model exposes functionality you need. It seems like more moving parts though, and I'd likely go that route only if the other two approaches are otherwise unviable.
We have developed an application on Windows.net mobile framework and it is used on a Windows 6.5 Smartphone. for our location based application. Our application is real time and tracks our employees. We are finding that the device loses its GPS signal.
Has anyone managed to restart the GPS receiver so that it starts giving the GPS signal again. I would be ever so gratefull if someone can help. We are using GeoFramework2.0 to deliver the geographic information that you need.
Regards
Sandy
The GPS is "shut down" when no application is using it. Just close your handles and re-open them.
If the GPS on your device is part of the WWAN radio (i.e. cellular phone) it may get put in to a low power state rather than being actually shut off. In that case, you can try restarting the radio.
If that doesn't work, some GPS's will allow you to send proprietary commands to them to force a reset or clear the memory. These commands are not standard and will differ significantly by manufacturer. If you have a SiRF GPS, take a look at the SiRF Binary Protocol Reference.