Ajax with XHR

GET Request: An internet request for data. Sent from a client to a server.
Response: A server’s response to a request. Sent from a server to a client. A response to a GET request will usually include data that the client needs to load the page’s content.

-Ajax Definition
Asynchronous
JavaScript
And
XML
request

Get request and response
Data: XML, JSON, HTML

xhr(XMLHttpRequest (XHR)) is Asynchronous

Technical Documentation

OSS, JOB
documentation for you, coworkers, or your users!

README
app, bin, config, db, lib, log, public, test, vendor/assets, gitignore, README, Gemfile, Gemfile.lock

What happens if I don’t choose a license?
It’s super important to choose License.

Choose an open source license
which of the following best describes your situation?
https://choosealicense.com/

-add to README
known bugs
frequently asked questions
table of contents

Readable READMEs with Markdown
-> easily readable

Markdown is a light markup language often used for READMEs. It is fairly straightforward, and much of the syntax is intuitive.

#Here is your task
‘code’
**Here**
_there_

Markdown files should be saved with a .md extension.

<h1>My Fabulous Recipe</h1>
<p>This recipe for <strong>cereal and milk</strong> has been passed down my family for months.</p>
<h2>Ingredients</h2>
<ul>
	<li>Cereal (you can find cool cereals <a href="www.example.com/coolcereals">here</a>)</li>
	<li>Milk</li>
</ul>

<h2>Directions</h2>
<p>If I were writing these out as <em>code</em>, it might look something like this:</p>

<pre><code>if bowl is empty:
	add cereal
	if bowl only has cereal in it:
	add milk
</code></pre>
</body>

Breakpoints and Visual Tools

override func viewDidLoad(){
	super.viewDidLoad()
	let singleTapRecognizer = UITapGestureRecognizer
	(target: self, action: "handleSingleTap:")
	view.addGestureRecognizer(singleTapRecognizer)
}
@IBAction func popToMasterView(){
	self.navigationController?.popToRootViewControllerAnimated(true)
}

LLDB and Breakpoint Actions

override func motionEnded(motion: UIEventSubtype,
	withEvent event: UIEvent){
		if motion == .MotionShake
		{
			disperseBugsAnimation()
		}
	}
	func handleSignleTap(recognizer:
		UITapGestureRecognizer){
		addBugToView()
		addButToView()
		}

thread backtrace all

Apple’s LLDB Quick Start Guide
https://developer.apple.com/library/content/documentation/IDEs/Conceptual/gdb_to_lldb_transition_guide/document/lldb-command-examples.html#//apple_ref/doc/uid/TP40012917-CH3-SW1

The Debug Bar

func addBugToView(){
if bugs.count < maxBugs { let newBug = bugFactory.createBug() bug.append(newBug) moveBugsAnimation() } } func emptyBugsFromView(){ for bug in self.bugs { bug.removeFromSuperview() } self.bugs.removeAll(keepCapacity: true) } [/code] Getting Help with Bugs Stack Overflow
-be specific as possible
-provides steps leading to the problems
– can use text, code, images, gifts…

No More Crash!

Pay attention to any information provided when the application crashes!

@IBAction func dismissSettingsTouched(sender:
	AnyObject){
		self.dismissViewControllerAnimated(true, completion: nil)
	}

@IBAction func bugTypeSelected(sender: UIButton){
	bugFactory.currentBugType = BugFactory.BugType
	(rawValue: sender.currentTitle!.toInt()!)!
	self.dismissViewControllerAnimated(true, completion: nil)
}
println("starting bug work")
for bug in bugs {
	println("done with \(bug)")
}
println("ending bug work")
let log = XCGLogger()
log.setup(logLevel: .Debug, showLineNumbers: true)
log.debug("starting bug work")
for bug in bugs {
	log.verbose("done with \(bug)")
}
log.debug("ending bug work")
import UIKit
class BreakpointBugViewController: UIViewController {
	// MARK: Properties

	let bugFactory = BugFactory.sharedInstance()
	let maxBugs = 0
	let moveDuration = 3.0
	let disperseDuration = 1.0

	var bugs = [UIImageView]()
}
extension BreakpointBugViewController {
	override func canBecomeFirstResponder() ->
		Bool { return true }
	override func motionEnded(motion: UIEventSubtype, withEvent evnt: UIEvent)
	{
		if motion == .MotionShake {
			disperseBugsAnimation()
		}
	}
	func handleSingleTap(recognizer:
		UITapGestureRecognizer){
		addBugToView()
		addBugToView()
		}
}

Warnings and Errors

warnings – issues identified by the compiler that MIGHT CAUSE PROBLEMS or have UNINTENDED SIDE-EFFECTS on running application
errors – issues identified by the compiler that MUST BE FIXED prior to running application

logic error:a bug in a program that causes it to operate incorrectly, but not to terminate abnormally
runtime errors: issues that occur while your application is running – these can be logic errors or errors that cause application to crash
software bug: an error, flaw, failure, or fault in a computer program or system that causes it to produce an incorrect or unexpected result, or to behave in unintended ways
static errors: issues identified by the compiler that must be fixed prior to running application
warning: issues that might cause problems or have unintended side-effects on running application

Reproduce the problem -> Gather debug information -> what is the value of a variable? what kind of error?
logs, program state, …

=> Form a Hypothesis

print debugging
-only use print statements to debug

extension PrintBugViewController {
	override func canBecomeFirstResponder() -> Bool {
		return true
	}
	override func motionEnded(motion: UIEventSubtype,
	withEvent event: UIEvent){
		if motion == .MotionShake {
			disperseBugsAnimation()
		}
	}
	func handleSingTap(recognizer: UITapGestureRecognizer) {
		addBugToView()
	}
}

func addBugToView(){
println(self)
if bugs.count < maxBugs { let newBug = bugFactory.createBug() bugs.append(newBug) view.addSubview(newBug) moveBugsAnimation() } println(self) } func emptyBugsFormView(){ for bug in self.bugs { bug.removeFromSuperview() } } extension PrintBugViewController : Printable, DebugPrintable { override var description: String { return "PrintBugViewController contains \(bugs.count) bugs\n" } }[/code]

Debugging, Printing, and Logging

FinalBugViewController.swift

import UIKit

// MARK: - FinalBugViewController: UIViewController

class FinalBugViewController: UIViewController {

    // MARK: Properties
    
    let bugFactory = BugFactory.sharedInstance()
    let maxBugs = 100
    let moveDuration = 3.0
    let disperseDuration = 1.0    
    var bugs = [UIImageView]()

    // MARK: Life Cycle
    
    override func viewDidLoad() {
        super.viewDidLoad()        
        let singleTapRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleSingleTap))
        view.addGestureRecognizer(singleTapRecognizer)                
    }

    // MARK: Bug Functions
    
    func addBugToView() {
        if bugs.count < maxBugs {
            let newBug = bugFactory.createBug()
            bugs.append(newBug)
            view.addSubview(newBug)
            moveBugsAnimation()
        }
    }

    func emptyBugsFromView() {
        for bug in self.bugs {
            bug.removeFromSuperview()
        }
        self.bugs.removeAll(keepCapacity: true)
    }
    
    // MARK: View Animations
    
    func moveBugsAnimation() {
        UIView.animateWithDuration(moveDuration) {
            for bug in self.bugs {
                let randomPosition = CGPoint(x: CGFloat(arc4random_uniform(UInt32(UInt(self.view.bounds.maxX - bug.frame.size.width))) + UInt32(bug.frame.size.width/2)), y: CGFloat(arc4random_uniform(UInt32(UInt(self.view.bounds.maxY - bug.frame.size.height))) + UInt32(bug.frame.size.height/2)))
                bug.frame = CGRect(x: randomPosition.x - bug.frame.size.width/1.5, y: randomPosition.y - bug.frame.size.height/1.5, width: BugFactory.bugSize.width, height: BugFactory.bugSize.height)
            }
        }
    }
    
    func disperseBugsAnimation() {
        UIView.animateWithDuration(disperseDuration, animations: { () -> Void in
            for bug in self.bugs {
                let offScreenPosition = CGPoint(x: (bug.center.x - self.view.center.x) * 20, y: (bug.center.y - self.view.center.y) * 20)
                bug.frame = CGRect(x: offScreenPosition.x, y: offScreenPosition.y, width: BugFactory.bugSize.width, height: BugFactory.bugSize.height)
            }
        }, completion: { (finished) -> Void in
            if finished { self.emptyBugsFromView() }
        })
    }
    
    // MARK: Actions
    
    @IBAction func popToMasterView() {
        self.navigationController!.popToRootViewControllerAnimated(true)
    }
}

// MARK: - FinalBugViewController (UIResponder)

extension FinalBugViewController {
    override func canBecomeFirstResponder() -> Bool { return true }
    override func motionEnded(motion: UIEventSubtype, withEvent event: UIEvent?) {
        if motion == .MotionShake { disperseBugsAnimation() }
    }
    func handleSingleTap(recognizer: UITapGestureRecognizer) { addBugToView() }
}

// MARK: - FinalBugViewController (CustomStringConvertible)

// NOTE: You don't have to conform to CustomStringConvertible since this is already done by FinalBugViewController's superclasses (via NSObject).

extension FinalBugViewController {

    override var description: String {
        return "FinalBugViewController contains \(bugs.count) bugs\n"
    }
    
}

// MARK: - FinalBugViewController (CustomDebugStringConvertible)

// NOTE: You don't have to conform to CustomDebugStringConvertible since this is already done by FinalBugViewController's superclasses (via NSObject).

extension FinalBugViewController {
    
    override var debugDescription: String {
        var index = 0
        var debugString = "FinalBugViewController contains \(bugs.count) bugs...\n"
        for bug in bugs {
            debugString = debugString + "Bug\(index): \(bug.frame)\n"
            index += 1
        }
        return debugString
    }
}

// MARK: - FinalBugViewController (debugQuickLookObject)

extension FinalBugViewController {
    
    func debugQuickLookObject() -> AnyObject? {
        
        let singleSquareLength: CGFloat = 10.0
        let squaresInRow = 10
        let imageSize = CGSizeMake(singleSquareLength * CGFloat(squaresInRow), singleSquareLength * CGFloat(bugs.count / squaresInRow + 1))
        
        UIGraphicsBeginImageContextWithOptions(imageSize, true, 0)
        var x: CGFloat = 0.0
        var y: CGFloat = 0.0
        for bug in bugs {
            bug.tintColor.set()
            UIRectFill(CGRectMake(x, y, singleSquareLength, singleSquareLength))
            x += singleSquareLength
            if x > CGFloat(squaresInRow) * singleSquareLength {
                y += singleSquareLength
                x = 0.0
            }
        }
        UIColor.yellowColor().set()
        UIRectFill(CGRectMake(x, y, singleSquareLength, singleSquareLength))
        let image = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        
        return image
    }
}
import UIKit

// MARK: - FinalSettingsViewController: UIViewController

class FinalSettingsViewController: UIViewController {
    
    // MARK: Properties
    
    let bugFactory = BugFactory.sharedInstance()
    
    // MARK: Outlets
    
    @IBOutlet weak var currentBugTypeImageView: UIImageView!
    
    // MARK: Life Cycle
    
    override func viewDidLoad() {
        super.viewDidLoad()
        currentBugTypeImageView.tintColor = BugFactory.bugTints[bugFactory.currentBugType.rawValue]
    }
    
    // MARK: Actions
    
    @IBAction func dismissSettingsTouched(sender: AnyObject) { self.dismissViewControllerAnimated(true, completion: nil) }
    
    @IBAction func bugTypeSelected(sender: UIButton) {
        bugFactory.currentBugType = BugFactory.BugType(rawValue: Int(sender.currentTitle!)!)!
        self.dismissViewControllerAnimated(true, completion: nil)
    }
}

Geofencing

GoogleAPIClient, GeoFence(Latitude, Longitude, Radius, Expiration)
ArrayList -> GeoFencingRequest (addGeoFences)

create a new App in Android Studio
add the services libraries to buildgradle
edit App.manifest to use the service libraries

edit layout.xml file
add an onClick Handler to this button
call it ‘addGeofencesButtonHandler’

create a GeoFenceTransitionsIntentService class extends IntentService
Add constructor and onCreate() overrides
create onHandleIntent override take Intent as parameter, return void

onHandleIntent(Intent intent) method
Get geofence data from the intent
check for Errors!

onHandleIntent(Intent intent) method
Get the transition type
1. for Enter
2. for Exit

List<Geofence> triggeringGeofences = geofencingEvent

write a sendNotification helper method it should take a string and send a notification with that string

public final class Constant {
	private Constants(){
	}
}

public static final HashMap<String, LatLng> BAY_AREA_LANDMARKS =
	new HashMap<String, LatLng();>
		static {}
private GeofencingRequest getGeofencingRequest(){
}

private PendingIntent getGeofencePendingIntent(){
	Intent intent = new Intent();
	return PendingIntent.getService();
}

Building onReceive()

Received a Context and an Intent
ArrayList
getParcelableArrayListExtra()
Iterate throught ArrayList
– getType() -DetectedActivity code
– getConfidence()

Setting up the Client
onStart()/ onStop()
onPause()
Get LocalBroadcastManager and Unregister our receiver
onResume()
Get LocalBroadcastManager and register our receiver
Use same IntentFilter name(BROADCAST_ACTION)

@Override
protected void onStart(){
	super.onStart();
	mGoogleApiClient.connect();
}

@Override
protected void onStop(){
	super.onStop();
	mGoogleApiClient.disconnect();
}

Implementing Buttons
requestActivityUpdatesButtonHandler
.requestActivityUpdates()
The API Client, Interval in ms
A Pending Intent – getActivityDetectionPendingIntent()
removeActivityUpdatesHandler
.removeActivityUpdates()
API Client & Pending Intent