How to get paired bluetooth devices - ios

Question

I want to create one application that show me paired devices in my app.(for example any device that paired me before detect and show me.)
also in the next time I want to send one NSString like "hello" to paired device.
I searching in google and I got so confused!!!
Please tell me first how to get paired device with my mobile and second how to send NSString value to them.

Answer 1

Here is an exemple for what you need :
You have to adapt it to match what u want. But you can see how it work ...
#implementation ViewController
{
CBPeripheralManager *_peripheralManager;
BOOL _isAdvertising;
}
- (void)_startAdvertising
{
NSUUID *estimoteUUID = [[NSUUID alloc] initWithUUIDString:#"B9407F30-F5F8-466E-AFF9-25556B57FE6D"];
CLBeaconRegion *region = [[CLBeaconRegion alloc] initWithProximityUUID:estimoteUUID
major:2
minor:1
identifier:#"SimEstimote"];
NSDictionary *beaconPeripheralData = [region peripheralDataWithMeasuredPower:nil];
[_peripheralManager startAdvertising:beaconPeripheralData];
}
- (void)_updateEmitterForDesiredState
{
if (_peripheralManager.state == CBPeripheralManagerStatePoweredOn)
{
// only issue commands when powered on
if (_isAdvertising)
{
if (!_peripheralManager.isAdvertising)
{
[self _startAdvertising];
}
}
else
{
if (_peripheralManager.isAdvertising)
{
[_peripheralManager stopAdvertising];
}
}
}
}
#pragma mark - CBPeripheralManagerDelegate
- (void)peripheralManagerDidUpdateState:(CBPeripheralManager *)peripheral
{
[self _updateEmitterForDesiredState];
}
#pragma mark - Actions
- (IBAction)advertisingSwitch:(UISwitch *)sender
{
_isAdvertising = sender.isOn;
[self _updateEmitterForDesiredState];
}
#end
This for monitoring :
#implementation AppDelegate
{
CLLocationManager *_locationManager;
BOOL _isInsideRegion; // flag to prevent duplicate sending of notification
}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)options
{
// create a location manager
_locationManager = [[CLLocationManager alloc] init];
// set delegate, not the angle brackets
_locationManager.delegate = self;
NSUUID *estimoteUUID = [[NSUUID alloc] initWithUUIDString:#"B9407F30-F5F8-466E-AFF9-25556B57FE6D"];
CLBeaconRegion *region = [[CLBeaconRegion alloc] initWithProximityUUID:estimoteUUID
identifier:#"Estimote Range"];
// launch app when display is turned on and inside region
region.notifyEntryStateOnDisplay = YES;
if ([CLLocationManager isMonitoringAvailableForClass:[CLBeaconRegion class]])
{
[_locationManager startMonitoringForRegion:region];
// get status update right away for UI
[_locationManager requestStateForRegion:region];
}
else
{
NSLog(#"This device does not support monitoring beacon regions");
}
// Override point for customization after application launch.
return YES;
}
- (void)_sendEnterLocalNotification
{
if (!_isInsideRegion)
{
UILocalNotification *notice = [[UILocalNotification alloc] init];
notice.alertBody = #"Inside Estimote beacon region!";
notice.alertAction = #"Open";
[[UIApplication sharedApplication] scheduleLocalNotification:notice];
}
_isInsideRegion = YES;
}
- (void)_sendExitLocalNotification
{
if (_isInsideRegion)
{
UILocalNotification *notice = [[UILocalNotification alloc] init];
notice.alertBody = #"Left Estimote beacon region!";
notice.alertAction = #"Open";
[[UIApplication sharedApplication] scheduleLocalNotification:notice];
}
_isInsideRegion = NO;
}
- (void)_updateUIForState:(CLRegionState)state
{
ViewController *vc = (ViewController *)self.window.rootViewController;
if (state == CLRegionStateInside)
{
vc.label.text = #"Inside";
}
else if (state == CLRegionStateOutside)
{
vc.label.text = #"Outside";
}
else
{
vc.label.text = #"Unknown";
}
}
#pragma mark - CLLocationManagerDelegate
- (void)locationManager:(CLLocationManager *)manager
didDetermineState:(CLRegionState)state forRegion:(CLRegion *)region
{
// always update UI
[self _updateUIForState:state];
if ([UIApplication sharedApplication].applicationState == UIApplicationStateActive)
{
// don't send any notifications
return;
}
if (state == CLRegionStateInside)
{
[self _sendEnterLocalNotification];
}
else
{
[self _sendExitLocalNotification];
}
}
#end
You can have the complete description at this adress :
http://www.cocoanetics.com/2013/11/can-you-smell-the-ibeacon/