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Mobile Development Articles
Page 99 of 156
How to lock the Android device programmatically?
This example demonstrate about How to lock the Android device programmatically.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 Step 3 − Add the following code to res/xml/policies.xml Step 4 − Add the following code to src/DeviceAdminpackage app.tutorialspoint.com.sample ; import android.app.admin.DeviceAdminReceiver ; import android.content.Context ; import android.content.Intent ; import android.widget.Toast ; public class ...
Read MoreHow to align views at the bottom of the screen in Android?
This example demonstrate about How to align views at the bottom of the screen 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.java Step 3 − Add the following code to src/MainActivity.javapackage app.tutorialspoint.com.sample ; import android.os.Bundle ; import android.support.v7.app.AppCompatActivity ; public class MainActivity extends AppCompatActivity { @Override protected void onCreate (Bundle savedInstanceState) { super .onCreate(savedInstanceState) ; setContentView(R.layout. activity_main ) ; } }Step 4 − Add the following code to androidManifest.xml ...
Read MoreHow to answer incoming call programmatically in iOS?
Apple iPhone SDK doesn’t allow this feature. If you really wish to achieve it you can use some private api such as CTCallAnswer(call);This will result in your app store rejection.
Read MoreHow to enable/disable data connection in iOS programmatically?
User can turn on or turn off mobile data from settings of an iOS device, but it’s practically not possible to disable or enable the same programmatically. It is only possible if you jailbroke an iOS device.. Apple does not allow any apps developer to access wifi or Bluetooth.There are some private API’s which may aid this but eventually result in app rejection from the app store.
Read MoreWhere are the app cookies stored on the iPhone?
Cookies are small files which are stored on a user's device while browsing internet.When we talk about cookies in iPhone we usually talk about application using the Web Views or the browser applications.A normal iOS application does not contains cookies. An app will have cookies only if the application has one or more web views.To check where are the app cookies stored on iPhone, On an iPhone, go to Settings -> Safari -> Advanced -> Website Data and you will see all cookies stored on your device.For iOS Application using web view The UIWebView will automatically store the cookies in the sharedHTTPCookieStorage.
Read MoreHow to execute a task repeatedly after fixed time intervals in iOS
Apple has predefined class Timer, that fires after a certain time interval has elapsed, sending a specified message to a target object.To read more about the Timer class you can check official apple documentation herehttps://developer.apple.com/documentation/foundation/timerTo execute the task repeatedly after fixed interval of time we are going to use timer class. We are going to develop a sample application where the application prints hello Tutorials Point after every 5 seconds.So let’s get started, Step 1 − Open Xcode → New Project → Single View Application → Let’s name it “HelloTutotrialsPoint”Step 2 − Open ViewController.swift and write one method doSomething() below ...
Read MoreHow to make a background 25% transparent on iOS
Apple provides backgroundColor which is an instance property, Changes to this property can be animated. The default value is nil, which results in a transparent background color.To make background 25% transparent we should set the view to the UIColor with alpha 0.25view.backgroundColor = UIColor(white: 1, alpha: 0.25)You can write the following code in your ViewController’s viewDidLoad method.Your code should look like below.override func viewDidLoad() { super.viewDidLoad() view.backgroundColor = UIColor(white: 1, alpha: 0.25) }
Read MoreHow to detect user inactivity for 5 seconds in iOS?
While designing any iOS Application you might come across a scenario where you have to do some sort of action if the screen is inactive for some amount of time.Here we will be seeing the same, we will be detecting user inactivity for 5 seconds.We will be using Apple’s UITapGestureRecognizer you can read more about it herehttps://developer.apple.com/documentation/uikit/uitapgesturerecognizer.So Let’s get started! We will be designing a basic application where we will start the timer as soon as the application is launched. If the user fails to touch the screen or does not perform any operation till 5 seconds we will be ...
Read MoreHow to check notifications status for the iOS App
Notifications communicate important information to users of your app, regardless of whether your app is running on the user's device.For example, a sports app can let the user know when their favourite team scores. Notifications can also tell your app to download information and update its interface. Notifications can display an alert, play a sound, or badge the app's icon.You can read more about notification status here https://developer.apple.com/documentation/usernotificationsApple recommend to user UserNotifications framework, So let’s get started. We will be seeing very simple and easy solution to get the notification status.Step 1 − Firstly you need to import the UserNotifications ...
Read MoreHow to check which notifications are active in status bar in iOS?
To get the list of notifications which are active on your status bar tray we are going to use getdeliverednotifications, you can read more about it here.https://developer.apple.com/documentation/usernotifications/unusernotificationcenterhttps://developer.apple.com/documentation/usernotifications/unusernotificationcenter/1649520-getdeliverednotificationsWhile it is know that we cannot get the notifications from all apps as that would be a privacy violation, but we can get the notification for our applicationApple provide getDeliveredNotifications(completionHandler:)Which returns a list of the app’s notifications that are still displayed in Notification Center.You can write the following code depending upon your need.UNUserNotificationCenter.current().getDeliveredNotifications { (notifications) in print(notifications) }
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