I want to create an Application that will send a message or pop up an alert when an people is using a same Iphone Application. And the requirement is , it also need to pop up an alert even it is in background or in sleep mode.
I found an function named UIBackgroundModes and bluetooth-central that will allow to move bluetooth in background.
Somebody help me and i will also be happy if there is sample code.
Not while app is in background mode. For background mode, you will have to fallback to push notification.
Excerpt from Apple Docs:
Peer-to-Peer Connectivity Provides Local Wireless and Bluetooth Networking
Peer-to-peer connectivity allows your game to create an ad-hoc Bluetooth or local wireless network between multiple iOS-based devices. Although designed with games in mind, this network is useful for any type of data exchange among users of your application. For example, an application could use peer-to-peer connectivity to share electronic business cards or other data.
Peer-to-peer connectivity is provided in iOS 3.0 and later.
Related
I'm using react native to create a simple app that essentially allows 2 android phones to communicate. These devices will always be next to each other, and will only communicate with one another. As I was doing some research it seems that bluetooth would be the best approach, connect the 2 phones and have them send messages. However, I haven't found a working react-native library. It seems that classic bluetooth (serial) would be the optimal approach and not BLE. I tried libraries that support classic bluetooth such as react-native-bluetooth-cross-platform, react-native-bluetooth-serial, and react-native-bluetooth-serial-next. However, none seem to work properly (they seem fairly outdated). The devices pair, but don't connect in order to send/read messages. Is there another form of secure communication I can use to have these devices communicate with one another? If bluetooth is the best form, is there any better serial bluetooth libraries out there?
Edit: I was also looking into using wifi p2p, however it seems like overkill since it's only these 2 devices that will communicate to each other and no other device. Also if I do use wifi p2p would it be possible to only have 2 devices communicate (i.e no other device can eavesdrop or send messages to the 2). Also, these devices will be stationary and pretty close, so if there is a way for 2-way communication via a cable, that will also work.
Can we control multiple DSC-QX100 cameras using the Camera Remote API SDK from an iPad OS7?
The objective is to cause multiple cameras to "snap" picture at the exact same time. Perhaps each camera has an address (serial number)...can the software communicate with all cameras at the same time using multiple addresses? Need is limited to still photos and so-called fast, rapid photography. Video not necessary.
If so, how?
Unfortunately you can only control one QX100 lens at a time. This is because the lens connects over WiFi and you are limited to only a single WiFi connection at once on an iPad. It may be possible using a desktop PC with multiple wireless cards installed but that would be the only way.
As the Sony rep said, there's no way to do this with "officially supported" techniques.
The reason for this is that the camera acts as a WiFi Access Point (AP) - so while multiple devices can connect to it, most mobile devices can only connect to it and not anything else (since iOS and Android don't support connection to multiple APs simultaneously). This is also why you can't use other network interfaces when connected to the camera. (I don't know about iOS, but Android always prioritizes WiFi over cell network data, for example.)
Android devices have a feature called "WiFi Direct" that provides more flexibility in terms of peer-to-peer interconnection, but iOS does not support WFD. The QX100 DOES respond to WFD invites, and you can accept a pairing request with (if I remember correctly) a long-press of the shutter button. However, the official app only supports normal WiFi AP connections.
I have not yet attempted to see if using Sony's remote API in combination with the (unsupported but apparently present) WiFi Direct capability works.
More info on Wifi Direct and Android can be found at http://developer.android.com/guide/topics/connectivity/wifip2p.html
Marlin SONY, I disagree, wifi is Ethernet and by definition can handle multiple devices on the same network. If you run a phone or iPad as a hotspot and connect multiple devices, it works.
Multicam Switcher Basic is an example of a free app that supports cutting together multiple camera angles live. Unfortunately the app is still being developed so features like third party camera support isn't included, but it does show what is possible and awaits development.
I think this should be possible. Apps like CollabraCam™ (Multicam Social Video Production) or RecoLive MultiCam prove that is possible to use mulitple cams simultaneous.
I need someone too to develop an App to be able to use "two" sony dsc-qx for 3D shoots. Please, if You know how or who can do this contact me email#3-d.re
Is there a way how to get list of all devices connected to the Bluetooth peripheral?
I want to connect to iBeacon and check if another iPhone is connected to it.
No, two reasons why not:
iBeacons are not connected to the iOS device, iBeacons are broadcast only and no back communication exist from the phone to the beacon.
Knowing details of other BT 4.0 Centrals connected to a Peripheral are not in line with the the privacy features of Bluetooth 4.0. iOS and other Centrals are are using resolvable private addresses, in order to avoid situation like you are describing.
#barbazoo is correct that you cannot do exactly what you are asking because iBeacons only transmit data -- they have no idea what devices see them.
You can accomplish something similar, however, if you have an app running on each of the iOS devices you mention, and you have a server where you can build a web service. The web service would expose two methods:
reportIBeaconVisible(iBeaconProximityUUID, iBeaconMajor, iBeaconMinor, myPhoneAdvertisingId)
queryVisiblePhones(iBeaconProximityUUID, iBeaconMajor, iBeaconMinor)
The app would report each iBeacon it sees using the first method, passing the iBeacon's identifiers, along with the phone's advertising identifier to the server.
The app could then use the second method to ask the server what other phones have seen the exact same iBeacon, which would return a list of phone advertising identifiers.
You'd have to have logic on the phone to only report data to the server at a reasonable frequency. You'd also need code on the server to automatically delete phone records in the list if the phones haven't reported seeing a beacon in a certain time interval.
Background
The company I'm working in would like to launch an iOS app to support an hardware device that interacts with some mechanical automatism (aimed to home and building automation) we already produce.
Such automatism receives the pulse needed to activate itself from a nearby bluetooth device, whose MAC address is known by a white list.
We already know of the need to sign up to the MFi program for Bluetooth hardware to connect and talk effectively with Apple devices, exchanging significant messages, but what it is demanded here is to simply detect the presence of such MAC address. No need to establish protocol sessions and the like.
The facts
Investigating how to programmatically enable/disable Bluetooth interface in iOS, I learned it is impossible without private frameworks, as this post states; that is not an option for us, as the app has to be published on the App Store and it is known that Apple rejects apps including code that is coming from private frameworks.
By the way, the app usability would greatly benefit from a direct access to that feature, so I started thinking if, instead of directly interact with Bluetooth on/off state, would it be possible to let the user access to the Bluetooth preference pane straight from the application.
Does anyone know about that?
No, unfortunately it's not possible. There was a trick with:
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"prefs://"]];
but it was opening only the preferences (not straight to bluetooth settings) and it's disabled in iOS 5.1. So your only chance is to make a really good help screen (with nice graphics and animations maybe) that explains the user how to enable the bluetooth.
I want to develop an App that requires wired communication between Web cam type video camera and iPad2. Basically I will directly connect Web cam and iPad2 using cable and when I start web cam, whatever images(picture/video) captured by web cam should be displayed on iPad2.
Based on my research on this I found that iPad2 cable is only made for iPod Program so the connector is not a traditional USB port I can't do direct communication between web cam and iPad2. Am I missing anything?
We are going to use Vivotek camera and they have mentioned here that we can use safari to receive the Motion-JPEG stream. I am wondering if that could also possible on iPad 2 and is it reliable?
Further I found Apple's MFi Program to develop electronic accessories that connect to iPod, iPhone, and iPad. Is there anyone out here used this already and know more about this if I can go for this?
Thanks.
You can receive a motion jpeg stream in mobile Safari or in a UIWebView in a custom app. I am not able to (yet) successfully receive a motion jpeg stream via an AVPlayer, AVPlayerItem or AVURLAsset.
Becoming a MFI authorized company is non-trivial (I tried once). They want larger established companies that have demonstrated they have the skills and manufacturing know-how/contacts to produce quality accessories.
Curious if you can step back from your initial requirement and see if you can figure out how to do it wirelessly for at least the last step to the iPad 2. Can go wired up to 2 feet away from the iPad and use a local private wifi network for that last 2 feet (say).
I recommend you add (use existing, or purchase) a wireless gateway. Connect the camera to the gateway, and then connect the iPAD to the wireless network, and then browse in safari to the camera and then you can view the image. There is no "hard wired" way to get this to work.
As for the "hard wired" portion of the question, I do not believe that is not possible without a lot of work and hardware. There is no "video in" on an ipad to make it a monitor for a camera.