Colour Behaviour Study of Japan / True Black on Real Life Physical Paper & on Computer Displays or Screens

I am hereby documenting few of my thoughts about black colour behaviour on Physical Paper & on Computer Display or on Screen.

 
I was from BFA (Bachelor of Fine Arts) – Applied Art background so we had subjects like Illustration, Calligraphy, Typography, Print Media Design, Logo & Symbol Design, Branding & Identity Design.

 
We use to design our assignments using Japan Black ink which is vary dark in contrast & which creates high contrast reach feeling of black colour tone on white paper.

 
So when we print our designs done in Adobe Illustrator or CorelDraw we use to fill the design with (CMYK) Cyan: 100%, Magenta: 100%, Yellow: 100%, K(Black): 100% than using only K: 100%. This CMYK values use to create high contrast Japan Black ink fill on White Paper.

 

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How to identify user is on iPhone, iPad or iPod touch by accessing their device width property. In other words how to write conditional code for 3.5 inch iPhone, 4 Inch iPhone, 4.7 inch iPhone, 5.5 inch iPhone, 9.7 inch iPad, 12.9 inch iPad

You may be programming Universal App for iPhone, iPad, iPad Pro & iPod touch. And you may be wondering how to write conditional code for that variant iOS device sizes.

 
So here is how to write code by identifying device height of your display or frame.

 
Here is how to solve this situation by identifying device height,

 

Note: This code uses native bounds of device so this code will work for all current devices that may be in landscape or portrait mode. Code is written in Swift Programming Language.

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How to secure macOS – OSX & iOS Wi-Fi Network with recommended settings for Wi-Fi routers and access points

I will list down steps to secure your macOS & iOS Wi-Fi Network.

 

Step 01: First things first, Update you Macintosh, iPhone, iPad, iPod touch & even AirPort Express, Airport Extreme base stations for latest software using Mac App Store.

 

Step 02: Choose Unique & Safe SSID (Service Set Identifier) Wi-Fi network name

 
Wi-Fi network name is case sensitive. Choose a unique name for your network and that isn’t shared by other nearby networks. If your SSID isn’t unique, Wi-Fi devices will have trouble identifying your network. This could cause network device to fail to automatically connect to your network, or to connect to other networks sharing the same SSID.

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Here is how you can call method or function in FirstViewController.swift from another Class called SecondViewController.swift in your iOS or macOS project within Xcode

Here is situation in your Xcode project that you want to call method from another class swift file to your original class of swift file.

 
Let’s call your original swift class file ‘FirstViewController’ which has ‘UIViewController’ as super class.

 
Second swift that you want to call function from we will assume that it has ‘SecondViewController’ as class name & it has ‘UIViewController’ as super class.

 
You have written function called ‘printSomething()’ in your ‘SecondViewController’ that would be triggered when somebody taps on button present on ‘FirstViewController’ as IBAction called ‘printThis(sender: UIButton)’

 
So you will write printThis function as follows:

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Here is how to calibrate & maximise your Mac, Apple Watch, iPhone, iPad or iPod touch battery life & performance

Introduction:

 
What is Battery life?

 
Battery life is the amount of time your device runs before it needs to be recharged.

 
What is Battery lifespan?

 
Battery lifespan is the amount of time your battery lasts until it needs to be replaced.

 

General Performance Tips & Solutions

 

  • Update your Apple device to the latest software updates & operating system:
  • Apple software updates often include advanced energy-saving technologies, so always make sure your device is running with the latest version of iOS, OS X, or watchOS.

     

  • Avoid extreme ambient temperatures: Your device is designed to perform well in a wide range of ambient temperatures, with 62° to 72° F (16° to 22° C) as the ideal comfort zone. Avoid exposing your device to ambient temperatures higher than 95° F (35° C), which can permanently damage battery capacity.
  •  
    Apple Device iPhone iPad iPod touch Temprature Comfort Zone

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What is Trust this Computer functionality means & what if you accidentally tapped on Don’t Trust this Computer & you want to reset it

What is trust settings means to your iOS & OSX device

 
Background: When you connect your iPhone, iPad, or iPod touch to a computer first time an alert asks whether you want to trust this computer or not.

 
Relationships of Trusted Devices:

  1. Trusted computers can sync with your iOS device, create backups, and access your device’s photos, videos, contacts, and other content.
  2. These computers remain trusted until you change device privacy settings or erase your iOS device.
  3. If you choose not to trust a computer, you block its access to content on your device. You’ll see the trust alert every time that you connect your iOS device to that computer.

 
ios9-trust-this-computer-alert-message

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How to fix Apple MacBook, MacBook Air, MacBook Pro, iPhone, iPad and iPod touch battery issue where battery status shows charging for long time & it never completes to 100% Charged

From time to time with long use of your Apple devices you may face issue like you may be charging your Apple MacBook, MacBook Air, MacBook Pro, iPhone, iPad and iPod touch for long time but battery charging never completes and display battery 100% Charged and it keep charging indefinitely.

 
So how to fix this?

 
Solution is simple…!!!

 
Assumption: I assume that you are using your Apple device without power cord attached & you have already backup your device using Time Machine for Macintosh & iTunes for iPhone, iPad and iPod touch.

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Apple iOS deleted apps reappear, keeps coming back or keeps reinstalling even if you have deleted them previously from your iPhone, iPad and iPod touch, Here is how to fix this.

It seems Apple iTunes App Store having problem for users with iOS devices including iPhone, iPad and iPod touch.

 
Symptoms: User deletes purchased or free app from their own iPhone, iPad or iPod touch but after few minutes same apps reinstalls / reappear on home screen.

 
Assumption: I assume your iOS device is connected to the internet.

 
First things first: Backup your iOS device using iTunes on your Macintosh.

 

Solution 01: This solution will work 100% of the time.

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What is Restrictions (parental control) in iOS, How to set & change password for restrictions on iPhone, iPad & iPod touch

Let’s know what is Restrictions:

 
Restrictions on iOS is also known as parental control.

 
You can turn on Restrictions on your iOS device to prevent access to specific apps and features.

 
You can disable hide specific apps or features to child lock or prevent particular user to access Safari, Camera, FaceTime, iTunes Store, iBooks Store, In-App Purchases, Siri, AirDrop, CarPlay, Installing apps from Apple App Store, Deleting apps.

 
You can also block changes or availability of types of content for specific user including Ratings, Music and podcasts, Movies, TV shows, Books, Apps, Siri, Websites etc.

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Here is how to set a background color in UIimage using Swift Programming Language while developing app for iOS in Xcode. With addition to this here is list of UIColor predefined / preset component values in Xcode that you can use using dot operator

I will explain below how to set background color to UIimage while developing app for iOS.

 

Assumptions: I assume that you have already created Xcode project for iOS app development & you are using storyboards for developing the same. Also you have dragged UIimage View to your current ViewController.

 
Step 01: Now connect your UIimage View to your ViewController.swift file with code something like this

 

@IBOutlet weak var selectImage: UIImageView!

 
Step 02: Now in your desired function set your UIimage’s background color with following code using dot operator

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