DonMag

Scenario:

We have iPads at various locations...
Users have iPhones, with an "Act as a BLE beacon" app, using the Service UUID as an identifier...
The iPads need to respond when a user gets in range...
The iPads *also* have to respond to any other BLE in range...

So far, not a big deal. However...

When the iPhone app goes background, it can ONLY broadcast the Service UUID, 

DonMag

Show an In-Progress indicator (such as a spinner)...

Make the Request...

      Alamofire.request(.GET, url, parameters: ["id": site.pressureSensorID])
            .responseJSON { response in
              // async call has returned...
              switch response.result {

DonMag

// "main" ViewController.swift

import UIKit

class ViewController: UIViewController {

	override func viewDidLoad() {
		super.viewDidLoad()
		// Do any additional setup after loading the view, typically from a nib.
	}

DonMag

- (IBAction)runTestURL:(id)sender {
	
	// 1
	NSString *dataUrl = @"https://someurl.com";
	NSURL *url = [NSURL URLWithString:dataUrl];
 
	// 2
	NSURLSessionDataTask *downloadTask = [[NSURLSession sharedSession] dataTaskWithURL:url
					completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
						// 4: Handle response here

DonMag

// this is ViewController.h

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController


@end

DonMag

// return proportional scaled size, with max width and height
func scaledSize(origSZ: CGSize, targSZ:CGSize) -> CGSize? {
	
	var lNewW = targSZ.width
	var lNewH = (origSZ.height / origSZ.width) * targSZ.width
	
	if (lNewH > targSZ.height) {
		lNewH = targSZ.height
		lNewW = (origSZ.width / origSZ.height) * targSZ.height

DonMag

//
#import "ViewController.h"
#import <WebKit/WebKit.h>

@interface ViewController ()

@property (strong, nonatomic) UIWebView *theWebView;
@property (strong, nonatomic) WKWebView *wkWebView;

@end

DonMag

struct Foo {
	
	var names: Set<String> = []
	var numbers: Set<Int> = []
	var otherNumbers: Set<Double> = []
	
	func setNames<S: SequenceType where S.Generator.Element == String>(seq: S) -> Foo {
		var new = self
		new.names = Set(seq)

DonMag

// in AppDelegate.swift

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

	var window: UIWindow?

DonMag

#import <UIKit/UIKit.h>

@interface DMView : UIView

@property (strong, nonatomic) UIColor *bkgColor;

- (id)initWithFrame:(CGRect)frame color:(UIColor *)color;

@end