Mobile App Dev 2021W: Tutorial 10 - Revision history

Soma: /* Tasks/Questions */

2021-04-07T03:20:12Z

Tasks/Questions

← Older revision		Revision as of 03:20, 7 April 2021
Line 11:		Line 11:
	# Why do you think that Converter-SB doesn't have a proper menu?		# Why do you think that Converter-SB doesn't have a proper menu?
	# Change Converter-SB so it starts with a message saying to "Choose a conversion above" in the result area and the button says "Select conversion".		# Change Converter-SB so it starts with a message saying to "Choose a conversion above" in the result area and the button says "Select conversion".
	# Using the storyboard editor, add a Label at the bottom of the screen. This label should initially be blank. It should have a center horizontal alignment, span the width of the screen, and be anchored to the bottom of the safe area.		# Using the storyboard editor, add a Label at the bottom of the screen. This label should initially be blank. It should have a center horizontal alignment, span the width of the screen, and be anchored to the bottom of the safe area. Describe the process you followed and include your modified Main.storyboard file.
	# Modify ViewController.swift to make the label you added previously show a random encouragement message every time a conversion is selected OR if the label area is touched. This label should go blank once the user starts typing in something. Add at least three messages, such as the following:		# Modify ViewController.swift to make the label you added previously show a random encouragement message every time a conversion is selected OR if the label area is touched. This label should go blank once the user starts typing in something. Add at least three messages, such as the following:
	#* You are choosing wisely!		#* You are choosing wisely!

Soma at 03:15, 7 April 2021

2021-04-07T03:15:21Z

← Older revision		Revision as of 03:15, 7 April 2021
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			This tutorial is due on April 12, 2021 by 11:30 AM. Please submit your answers via cuLearn using [https://homeostasis.scs.carleton.ca/~soma/mad-2021w/templates/tut10-template.txt this template].

			Note that this tutorial is '''optional'''. If you complete it, it will replace your lowest tutorial grade or will give you bonus points worth 50% of one tutorial (whichever improves your grade more).

	==Tasks/Questions==		==Tasks/Questions==

Soma: /* Tasks/Questions */

2021-04-07T03:11:59Z

Tasks/Questions

← Older revision		Revision as of 03:11, 7 April 2021
Line 8:		Line 8:
	# Change Converter-SB so it starts with a message saying to "Choose a conversion above" in the result area and the button says "Select conversion".		# Change Converter-SB so it starts with a message saying to "Choose a conversion above" in the result area and the button says "Select conversion".
	# Using the storyboard editor, add a Label at the bottom of the screen. This label should initially be blank. It should have a center horizontal alignment, span the width of the screen, and be anchored to the bottom of the safe area.		# Using the storyboard editor, add a Label at the bottom of the screen. This label should initially be blank. It should have a center horizontal alignment, span the width of the screen, and be anchored to the bottom of the safe area.
	# Modify ViewController.swift to make the label you added previously show a random encouragement message every time a conversion is selected. This label should go blank once the user starts typing in something. Add at least three messages, such as the following:		# Modify ViewController.swift to make the label you added previously show a random encouragement message every time a conversion is selected OR if the label area is touched. This label should go blank once the user starts typing in something. Add at least three messages, such as the following:
	#* You ~~chose~~ wisely!		#* You are choosing wisely!
	#* Keep going! Almost there!		#* Keep going! Almost there!
	#* ~~Thank you for choosing.~~		#* Welcome to Converter-SB!

	==Code==		==Code==

Soma: /* Tasks/Questions */

2021-04-07T03:10:05Z

Tasks/Questions

← Older revision		Revision as of 03:10, 7 April 2021
Line 9:		Line 9:
	# Using the storyboard editor, add a Label at the bottom of the screen. This label should initially be blank. It should have a center horizontal alignment, span the width of the screen, and be anchored to the bottom of the safe area.		# Using the storyboard editor, add a Label at the bottom of the screen. This label should initially be blank. It should have a center horizontal alignment, span the width of the screen, and be anchored to the bottom of the safe area.
	# Modify ViewController.swift to make the label you added previously show a random encouragement message every time a conversion is selected. This label should go blank once the user starts typing in something. Add at least three messages, such as the following:		# Modify ViewController.swift to make the label you added previously show a random encouragement message every time a conversion is selected. This label should go blank once the user starts typing in something. Add at least three messages, such as the following:
	* You chose wisely!		#* You chose wisely!
	* Keep going! Almost there!		#* Keep going! Almost there!
	* Thank you for choosing.		#* Thank you for choosing.

	==Code==		==Code==

Soma: /* Tasks/Questions */

2021-04-07T03:09:28Z

Tasks/Questions

← Older revision		Revision as of 03:09, 7 April 2021
Line 7:		Line 7:
	# Why do you think that Converter-SB doesn't have a proper menu?		# Why do you think that Converter-SB doesn't have a proper menu?
	# Change Converter-SB so it starts with a message saying to "Choose a conversion above" in the result area and the button says "Select conversion".		# Change Converter-SB so it starts with a message saying to "Choose a conversion above" in the result area and the button says "Select conversion".
			# Using the storyboard editor, add a Label at the bottom of the screen. This label should initially be blank. It should have a center horizontal alignment, span the width of the screen, and be anchored to the bottom of the safe area.
			# Modify ViewController.swift to make the label you added previously show a random encouragement message every time a conversion is selected. This label should go blank once the user starts typing in something. Add at least three messages, such as the following:
			* You chose wisely!
			* Keep going! Almost there!
			* Thank you for choosing.

	==Code==		==Code==

Soma: /* Tasks/Questions */

2021-04-07T03:02:39Z

Tasks/Questions

← Older revision		Revision as of 03:02, 7 April 2021
Line 2:		Line 2:

	# Download and run [https://homeostasis.scs.carleton.ca/~soma/mad-2021w/code/Converter-SB.zip Converter-SB]. How similar is its execution to Converter2 from Tutorial 2? How similar to Converter2A from Tutorial 6?		# Download and run [https://homeostasis.scs.carleton.ca/~soma/mad-2021w/code/Converter-SB.zip Converter-SB]. How similar is its execution to Converter2 from Tutorial 2? How similar to Converter2A from Tutorial 6?
	# ~~Compare~~ Main.storyboard ~~with activity_main~~.~~xml from Tutorial 6. How similar are they~~? How ~~different?~~		# How are connections made between Main.storyboard and ViewController.swift? How does this compare to the connections between activity_main.xml and MainActivity.kt from Tutorial 6?
	~~# Compare ViewController~~.~~swift with~~ MainActivity.kt from Tutorial 6. How similar ~~are they~~? How ~~different~~?		# How is layout specified in Main.storyboard? How similar is this to how layout was specified in Converter2 and Converter2A?
			# How does the flow of control of Converter-SB compare to Converter2 and Converter2A?
	# Why do you think that Converter-SB doesn't have a proper menu?		# Why do you think that Converter-SB doesn't have a proper menu?
	# Change Converter-SB so it starts with a message saying to "Choose a conversion above" and		# Change Converter-SB so it starts with a message saying to "Choose a conversion above" in the result area and the button says "Select conversion".



	==Code==		==Code==

Soma at 02:56, 7 April 2021

2021-04-07T02:56:32Z

← Older revision		Revision as of 02:56, 7 April 2021
Line 1:		Line 1:
			==Tasks/Questions==

			# Download and run [https://homeostasis.scs.carleton.ca/~soma/mad-2021w/code/Converter-SB.zip Converter-SB]. How similar is its execution to Converter2 from Tutorial 2? How similar to Converter2A from Tutorial 6?
			# Compare Main.storyboard with activity_main.xml from Tutorial 6. How similar are they? How different?
			# Compare ViewController.swift with MainActivity.kt from Tutorial 6. How similar are they? How different?
			# Why do you think that Converter-SB doesn't have a proper menu?
			# Change Converter-SB so it starts with a message saying to "Choose a conversion above" and



	==Code==		==Code==

			[https://homeostasis.scs.carleton.ca/~soma/mad-2021w/code/Converter-SB.zip Converter-SB.zip]

	===Conversions.swift===		===Conversions.swift===

Soma: /* Code */

2021-04-07T02:37:34Z

Code

@@ Line 1: / Line 1: @@
 ==Code==
 ===Conversions.swift===
@@ Line 92: / Line 48: @@
 let availConversions = [String] (conversions.keys)
 </syntaxhighlight>

Soma: Created page with " ==Code== ===ViewController.swift=== // // ViewController.swift // Converter-SB // // Created by Anil Somayaji on 2021-04-06. // impo..."

2021-04-07T02:36:54Z

Created page with " ==Code== ===ViewController.swift=== <syntaxhighlight lang="swift" line> // // ViewController.swift // Converter-SB // // Created by Anil Somayaji on 2021-04-06. // impo..."

New page

==Code==

===ViewController.swift===

<syntaxhighlight lang="swift" line>
//
// ViewController.swift
// Converter-SB
//
// Created by Anil Somayaji on 2021-04-06.
//

import UIKit

class ViewController: UIViewController {
@IBOutlet var fromField: UITextField!
@IBOutlet weak var result: UILabel!
@IBOutlet weak var convButton: UIButton!

var convIndex = 0
var conv = conversions[availConversions[0]]!

override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}

@IBAction func updateConversion() {
convIndex = (convIndex + 1 ) % availConversions.count
conv = conversions[availConversions[convIndex]]!
convButton.setTitle("Conversion: \(availConversions[convIndex])", for: .normal)
}

@IBAction func doConversion() {
if let fromS = fromField.text {
if let from = Double(fromS) {
result.text =
conv.formatConversion(from)
} else {
result.text = "Please enter a number."
}
}
}
}
</syntaxhighlight>

===Conversions.swift===

<syntaxhighlight lang="swift" line>
// Conversions.swift

struct Converter {
var convFrom = "From Type"
var convTo = "To Type"
var convert: (_ from: Double) -> Double?

func formatConversion(_ from: Double) -> String {
if let to = self.convert(from) {
let toS = String(format: "%.3f", to)
return "\(from) \(self.convFrom) is \(toS) \(self.convTo)."
} else {
return "Converting \(from) \(convFrom) to \(self.convTo) failed."
}
}

init(_ from: String, _ to: String, _ f: @escaping (_ from: Double) -> Double?) {
self.convFrom = from
self.convTo = to
self.convert = f
}
}

func InToCM(_ inch: Double) -> Double {
let cm = 2.54 * inch
return cm
}

let conversions =
["F to C": Converter("Farenheit", "Celsius",
{F in return ((F - 32.0)*(5/9))}),
"C to F": Converter("Celsius", "Farenheit",
{C in return ((9/5)*C + 32.0)}),
"km to mi": Converter("kilometers", "miles",
{k in
let m = k * 0.6213712
return m
}),
"inch to cm": Converter("inches", "centimeters",
InToCM)
]

let availConversions = [String] (conversions.keys)
</syntaxhighlight>

===Main.storyboard===

<syntaxhighlight lang="xml" line>
<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="17701" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
<device id="retina4_7" orientation="portrait" appearance="light"/>
<dependencies>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="17703"/>
<capability name="Safe area layout guides" minToolsVersion="9.0"/>
<capability name="System colors in document resources" minToolsVersion="11.0"/>
<capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
</dependencies>
<scenes>

<scene sceneID="tne-QT-ifu">
<objects>
<viewController id="BYZ-38-t0r" customClass="ViewController" customModule="Converter_SB" customModuleProvider="target" sceneMemberID="viewController">
<view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
<rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
<subviews>
<textField opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="left" contentVerticalAlignment="center" borderStyle="roundedRect" textAlignment="center" minimumFontSize="17" translatesAutoresizingMaskIntoConstraints="NO" id="VJ7-bt-qir">
<rect key="frame" x="0.0" y="122" width="375" height="34"/>
<fontDescription key="fontDescription" type="system" pointSize="14"/>
<textInputTraits key="textInputTraits"/>
<connections>
<action selector="doConversion" destination="BYZ-38-t0r" eventType="editingChanged" id="WEr-SS-N11"/>
</connections>
</textField>
<button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="QgR-df-1nY">
<rect key="frame" x="0.0" y="44" width="375" height="30"/>
<state key="normal" title="Button"/>
<connections>
<action selector="updateConversion" destination="BYZ-38-t0r" eventType="touchUpInside" id="u10-i8-VVe"/>
</connections>
</button>
<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Label" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="QHi-YO-lly">
<rect key="frame" x="0.0" y="164" width="375" height="21"/>
<fontDescription key="fontDescription" type="system" pointSize="17"/>
<nil key="textColor"/>
<nil key="highlightedColor"/>
</label>
</subviews>
<viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
<color key="backgroundColor" systemColor="systemBackgroundColor"/>
<constraints>
<constraint firstItem="6Tk-OE-BBY" firstAttribute="trailing" secondItem="VJ7-bt-qir" secondAttribute="trailing" id="1By-U1-T9I"/>
<constraint firstItem="QgR-df-1nY" firstAttribute="leading" secondItem="6Tk-OE-BBY" secondAttribute="leading" id="3rM-HL-fub"/>
<constraint firstItem="QHi-YO-lly" firstAttribute="top" secondItem="VJ7-bt-qir" secondAttribute="bottom" constant="8" id="4Mw-3g-c0Y"/>
<constraint firstItem="VJ7-bt-qir" firstAttribute="top" secondItem="QgR-df-1nY" secondAttribute="bottom" constant="48" id="IBz-Q9-HJr"/>
<constraint firstAttribute="trailing" secondItem="QHi-YO-lly" secondAttribute="trailing" id="LsV-b9-Mq7"/>
<constraint firstItem="QHi-YO-lly" firstAttribute="leading" secondItem="6Tk-OE-BBY" secondAttribute="leading" id="NS2-ki-p00"/>
<constraint firstItem="QHi-YO-lly" firstAttribute="top" secondItem="VJ7-bt-qir" secondAttribute="bottom" constant="8" symbolic="YES" id="NX0-K4-DfK"/>
<constraint firstAttribute="trailing" secondItem="QgR-df-1nY" secondAttribute="trailing" id="ckB-TL-gBc"/>
<constraint firstItem="QgR-df-1nY" firstAttribute="top" secondItem="6Tk-OE-BBY" secondAttribute="top" constant="44" id="q2m-Gg-fyA"/>
<constraint firstItem="VJ7-bt-qir" firstAttribute="leading" secondItem="6Tk-OE-BBY" secondAttribute="leading" id="tT6-p8-3IJ"/>
</constraints>
</view>
<connections>
<outlet property="convButton" destination="QgR-df-1nY" id="6Dj-hw-rOA"/>
<outlet property="fromField" destination="VJ7-bt-qir" id="hkS-Oj-aWr"/>
<outlet property="result" destination="QHi-YO-lly" id="QEU-E4-Ty3"/>
</connections>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="-215" y="40"/>
</scene>
</scenes>
<resources>
<systemColor name="systemBackgroundColor">
<color white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
</systemColor>
</resources>
</document>
</syntaxhighlight>