How to add custom font to iOS app in Xcode

You can add True Type Font (.ttf) or Open Type Font (.otf) to your app and use it the same way you use font provided by iOS.

Add your font file to your Xcode project

From menu bar select File->Add Files to “project_name” or just drag font files to your project Continue reading “How to add custom font to iOS app in Xcode”

Custom controls using @IBDesignable and @IBInsepectable

You can design custom controls and render them in real time from Interface Builder using @IBDesignable and @IBInspectable attributes.

In the following example we will create a custom UIButton and change its corner radius, border color and border width from InterFace Builder with the help of @IBDesignable and @IBInspectable attributes. Continue reading “Custom controls using @IBDesignable and @IBInsepectable”

How to change UILabel height dynamically to fit all text

In two steps we can make a UILabel change its height dynamically without writing code.

UILabel dynamic height

First select your UILabel and from “Identity inspector” set number of lines property to 0.

UILabel dynamic height

Next add Top, Trailing, Leading and Height constraints then select the height constraint and change its “Relation” property from “Equal” to “Greater Than or Equal” Continue reading “How to change UILabel height dynamically to fit all text”

Working with Dates in Swift

Working with Dates in Swift

To start working with dates in iOS you must be familiar with at least these three objects: Date, DateFormatter and DateComponents.

Date struct

Date is a struct that belongs to the Foundation framework.

It represents a specific point in time independent of any calendar or time zone.

Date structure bridges to the NSDate class.

It provides methods for creating dates, comparing dates and calculating time intervals between dates. Continue reading “Working with Dates in Swift”

Remove empty rows at the end of UITableView

Removing Empty Rows from the end of UITableView

Sometimes you have a table view with very few number of rows that are not covering the whole screen height.

In that case Xcode will add extra empty rows to your table view which looks very unprofessional. Continue reading “Remove empty rows at the end of UITableView”

Custom header view from xib for UITableView

In this step by step tutorial we will create a custom header view to use in UITableView and it will be loaded from xib file.

Creating the UITableViewHeaderFooterView class and xib

1- First of all create a new Swift file and make it subclass of UITableViewHeaderFooterView and name it “DemoHeaderView” Continue reading “Custom header view from xib for UITableView”

Passing data back and forward between view controllers

I will go straight to the point and tell you how to send data back and forward in different situations.

This code was written in Swift 3

Sending data forward using Segue

If you are navigating from ViewControllerA to ViewControllerB using Segue called “toViewControllerB” then do the following steps Continue reading “Passing data back and forward between view controllers”

Working with CALayer

What is CALayer

CALayer is an object responsible for drawing and animations and it is part of Core Animation framework.

It is always used as backing store for UIViews to manage visual content but it can be also used without views.

If it was created by a view the view assigns itself as delegate for that layer and you should not change that. Continue reading “Working with CALayer”

Set, Array and Dictionary what’s the differences?

Swift provides three collection types for storing collections of values

Here we will try to show the differences between them so you can easily decide which one to use in every situation.

Array:

Array is ordered collection so you can access any element inside it using its index.

Arrays can contain duplicates. Continue reading “Set, Array and Dictionary what’s the differences?”