How to write Simple Animation while setVisibility.GONE in Android?

By | September 5, 2017

Automatic animations on Layout Change If you want to animate views in a layout without writing big codes. Here is a Simple way. Find the root element of the layout and add this property to it. Adding Manual Animations Fade Out Animation Fade In Animation Move Down by height Translate animate to origin Position Adding Duration Chaining Animations… Read More »

James

How to add finger print authentication in Android.

By | August 30, 2017

Android 6.0 saw the introduction of fingerprint authentication, a new security feature that allows users to confirm their identify with a single touch. Well, after that this has become a common way of authentication for users. Advantages Very easy, fast and convenient to use for authentication Don’t need to remember No struggling with the keyboards No more password… Read More »

James

HTML events in Angular JS

By | August 25, 2017

You can add AngularJS event listeners to your HTML elements by using one or more of these directives: ng-blur ng-change ng-click ng-copy ng-cut ng-dblclick ng-focus ng-keydown ng-keypress ng-keyup ng-mousedown ng-mouseenter ng-mouseleave ng-mousemove ng-mouseover ng-mouseup ng-paste Example

James

How to do a List filtering in Angular JS?

By | August 20, 2017

Filtering is really easy in Angular JS. In Angular JS we use the “filter” keyword to do the filtering. Example Copy and paste the above code in an html and run. You will see the result. Here we have a variable named “my_search” which is a textbox in HTML. so the filter value is taken from the textbox.… Read More »

James

Class has not initialiser error in Swift – Solved.

By | August 14, 2017

Apart from other languages, when you write a class in Swift, It should have a initialiser. To solve this we have to write init() function in that particular class. Just like below. For example, look at the below class. Here we have 5 variables. The above error usually comes when you don’t initialize all variables in the class… Read More »

James

What is Scope and RootScope in Angular JS? with examples

By | August 10, 2017

Scope Scope is the binding part between the HTML (UI) and the Javascript (the Controller). Scope object contains the available properties and methods. Scope is accessible in both HTML and Javascript. Scope Example Root Scope Root Scope is created on the HTML element that contains the ng-app directive Root Scope is available for the entire application If a… Read More »

James

What is ng-model in Angular JS and How to use it?

By | August 1, 2017

With the ng-model directive you can bind the value of an input field to a variable created in AngularJS. Here we will have two input fields which will bind to two variables in Angular JS. Example Just copy paste the above code to your editor and save in html and see the result.

James

How to find location in Android using GPS?

By | July 25, 2017

This example helps you to find the location in Android using the GPS. I have commented out some functionality in the code. You can uncomment it and extend it at your wish. At first we will create a utility class that will handle all GPS related Operations. GPS Utility Class This class has all utility functions for getting… Read More »

James

Floating Button like Facebook Chat in Android

By | July 20, 2017

Floating widgets float over the screen over any app that is currently running. Here we will make a floating action button that you can drag around the screen to position and do actions on it. Add Permission For drawing over the other apps, you need “android.permission.SYSTEM_ALERT_WINDOW” permission. So add this entry in your manifest. Our Manifest will look… Read More »

James

What are Angular JS modules? – A Simple Demo

By | July 15, 2017

Angular JS modules means : An AngularJS module defines an application. The module is a container for the different parts of an application like controller, services, filters, directives etc. The module is a container for the application controllers. Controllers always belong to a module. Example Here we have a module named “MyApp” and controller for this module is… Read More »

James

Angular JS Directives in Short.

By | July 10, 2017

Here is a comprehensive list of Angular JS Directives. Directive Description ng-app It defines the root element of an application. ng-bind It binds the content of an html element to application data. ng-bind-html Itbinds the innerhtml of an html element to application data, and also removes dangerous code from the html string. ng-bind-template It specifies that the text… Read More »

James

Starting with Angular JS

By | July 5, 2017

What is Angular JS? AngularJS is a very powerful JavaScript Framework. It is mainly used in Single Page Application (SPA) projects. Open source, completely free To Start You just have to import the below script to start with first simple application. Lets try a simple application All Done. Lets see in the next demo.

James

Bottom Navigation Demo in Android

By | June 15, 2017

To get started with this, you need the latest version (version 25) of Android SDK & tools (including SDK tools, build-tools, platform-tools, support repository). Gradle Add the design support library First step is to add the design support library to your app-level build.gradle file. Example is as shown below: Layout Add the BottomNavigationView to your layout Next step,… Read More »

James

What are weak references? How it can be used to avoid memory leaks?

By | June 1, 2017

Weak reference objects, which do not prevent their referents from being made finalizable, finalized, and then reclaimed. Weak references are most often used to implement canonicalizing mappings. Suppose that the garbage collector determines at a certain point in time that an object is weakly reachable. At that time it will atomically clear all weak references to that object… Read More »

James

Android Speech to Text Tutorial

By | June 1, 2017

Android comes with a built in feature for Speech to Text. This is really helpful when you want to provide navigation in your app through voice commands. When you say something in the app, your voice will be streamed to the server and the server will convert it to text and send back. You can also have offline… Read More »

James

What are the different Logging options available in Android?

By | May 29, 2017

Android uses a centralized logging system. However you can write your own custom log statements. Log Statements To write log statements, you use use the android.util.Log class with the following methods: Log.v() Log.d() Log.i() Log.w() Log.e() Log.wtf() They are sorted by relevance with Log.i() being the least important one. The first parameter of these methods is a TAG… Read More »

James

Simple Image Scaling Demo in Android

By | May 20, 2017

This article shows how you can do simple image scaling in Android. Here I have a simple class that Scales the image. The Utility class Layout The layout which shows the image for scaling. Set the above xml as layout for the Activity. Activity Please leave your comments at the end of the post.

James