Found 2006 Articles for Mobile Development

How to check edit text's text is email address or not in Android?

Chandu yadav
Updated on 30-Jul-2019 22:30:24
Before getting into an example, we should know the test scenario. In the login page, usually, we take email id and password from edit text. While taking email id from edit text. we should know, it is the valid format or not.This example demonstrates how to check the edit text's text is an email address or not.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.         In the above layout, we ... Read More

How do I use tabHost for Android?

Arjun Thakur
Updated on 30-Jul-2019 22:30:24
Before getting into example we should know what is tab host in android. Tab host holds set of tabs. Each tab contains either fragment or activity as per project specification. The user can scroll tabs from left to right or right to left.This example demonstrates how to use tab host in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.                             ... Read More

What are intent-filters in Android?

George John
Updated on 30-Jun-2020 05:29:17
An intent filter is an instance of the IntentFilter class. Intent filters are helpful while using implicit intents, It is not going to handle in java code, we have to set it up in AndroidManifest.xml. Android must know what kind of intent it is launching so intent filters give the information to android about intent and actions.Before launching intent, android going to do action test, category test and data test. This example demonstrate about how to use intent filters in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required ... Read More

How to set Adapter to Auto Complete Text view?

Ankith Reddy
Updated on 30-Jul-2019 22:30:24
 Before getting into an example, we should know what is autocomplete textview in android. Autocomplete textview is just like an edit text and it is a subclass of editext, but it is going to show suggestion from a list as a dropdown list. We have to set up Threshold value to auto-complete text view. for example, we have set it up Threshold as 1 so if user enters one letter is going to give suggestion according to Threshold letter.This example demonstrates about how to set up an adapter to auto-complete Textview.Step 1 − Create a new project in Android Studio, ... Read More

How to insert new cell into UITableView using Swift?

Rishi Rathor
Updated on 30-Jul-2019 22:30:24
To insert a new cell into UITableView we'll first have to create a table view cell and then add it to the table view using Cell for row at method of Table view.We can create a cell using Storyboard or by creating a nib of class UITableViewCell.In the View controller drag and drop a table view and connect it's outlet to the ViewController class.Let's create a cell in the table view we just created and create it's class, call it CustomCell, and assign the class to cell.Give it an identifier "CustomCell"Add a label in the cell and change it to ... Read More

How to create a WebView in iOS/iPhone?

Anvi Jain
Updated on 30-Jun-2020 05:24:12
To create a web view in iOS we'll use Webkit framework of iOS. Previously UIWebView was used to create web views but that has been deprecated now.We'll use WebKit View in this project.Create a new project and from object library drag and drop webKit View to the ViewController.Give constraints as per your requirement.Make an outlet connection to the webKit in ViewController.We'll open facebook in this example using the code below.let url = URL(string: "") override func viewDidLoad() {    super.viewDidLoad()    let request = URLRequest.init(url: self.url!)    self.wbView.load(request) }Now finally we need to add a key App Transport Security Settings ... Read More

How to set background for Navigation Bar in iOS?

Vrundesha Joshi
Updated on 30-Jul-2019 22:30:24
To set the background color for a navigation bar we can either do it programmatically or through the storyboard if it is on storyboard.Method 1Let's see how to change the background color of a navigation bar through the storyboard editor.Create a new project, select it's view controller and embed in navigation controller.Select the navigation bar and go to It's attribute inspector.This is how it looks in the Xcode 10. You can select the tint color from there and it will be changed for the navigation controller.Method 2Programmatically changing the navigation background.To programmatically change it, go to the view controller and ... Read More

What is difference between UITableViewController and UIViewController?

Rishi Rathor
Updated on 30-Jul-2019 22:30:24
UItableViewController and UIViewController are two different objects of iOS UIKit framework. Both are used for different purpose.A UIViewController class manages a ViewContoller which is responsible for actions that happen within that View controller. This class is aware of actions that happen on view controller, like ViewDidLoad, ViewWillApper, ViewDidAppear, ViewWillDisapper, ViewDidDisapper.Whereas, A UITableViewController is responsible for managing a table, it's data and it's events using UITableViewDataSource, UITableViewDelegate.A UITableViewController conforms to UIViewController, UITableViewDataSource and UITableViewDelegate to implement table view.Below is an example of a class implementing UIViewController.class ViewController : UIViewController { @IBOutlet weak var sampleView: UIView! ... Read More

How to compare two NSDates in iPhone/iOS?

Jennifer Nicholas
Updated on 30-Jul-2019 22:30:24
In this article we'll see how to compare two NSDates in swift. First of all we'll need to create two NSDates.We'll do it in playground instead of simulator this time.First Let's create two different dates.let dateOne = NSDateComponents() = 5 dateOne.month = 6 dateOne.year = 1993 let dateTwo = NSDateComponents() = 4 dateTwo.month = 2 dateTwo.year = 1995Using these date components we'll create dates and then compare themlet cal = NSCalendar.current let FirstDate = dateOne as DateComponents) let secondDate = dateTwo as DateComponents)Now to compare them we'll use a if condition.if secondDate!.compare(firstDate!) == .orderedAscending {   ... Read More

How can I send mail from an iPhone application?

Anvi Jain
Updated on 30-Jun-2020 05:25:17
To send an email from our application we'll need to use URL Schemes and some action on event of which the email will be sent. We can not actually send email from the application, unless it is an mailing application and we use MessageUI framework of iOS, but we can open some email app from our application with prefilled email and subject.We'll see both the ways of doing this.Let's see how we can open the MAIL app of iOS with an example.Create a project and on its first view controlleradd a button and change it's text to open "open e-mail", ... Read More