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What is context in android ?

The topic of Context in Android seems to be confusing too many. People just know that Context is needed quite often to do basic things in Android. People sometimes panic because they try to do perform some operation that requires the Context and they don’t know how to “get” the right Context. I’m going to try to demystify the idea of Context in Android. A full treatment of the issue is beyond the scope of this post, but I’ll try to give a general overview so that you have a sense of what Context is and how to use it.
What exactly is Context?


Well, the documentation itself provides a rather straightforward explanation: The Context class is an “Interface to global information about an application environment". The Context class itself is declared as abstract class, whose implementation is provided by the Android OS. The documentation further provides that Context “…allows access to application-specific resources and classes, as well as up-calls for application-level operations such as…

LocationManager vs GoogleApiClient

User Location on Android
Getting the user’s location on Android is a little less straightforward than on iOS. To start the confusion, there are two totally different ways you can do it. The first is using Android APIs from android.location.LocationListener, and the second is using Google Play Services APIs com.google.android.gms.location.LocationListener. Let’s go through both of them.
1.Android’s Location API
The Android’s location APIs use three different providers to get location - ·LocationManager.GPS_PROVIDER — This provider determines location using satellites. Depending on conditions, this provider may take a while to return a location fix. ·LocationManager.NETWORK_PROVIDER — This provider determines location based on availability of cell tower and WiFi access points. Results are retrieved by means of a network lookup. ·LocationManager.PASSIVE_PROVIDER — This provider will return locations generated by other providers. You passively receive location updates …

ANGULAR-2

Angular JS is an open source framework built on JavaScript. It was built by the
developers at Google. This framework was used to overcome obstacles encountered while
working with Single Page applications. Also, testing was considered as a key aspect while
building the framework. It was ensured that the framework could be easily tested. The
initial release of the framework was in October 2010.

Features of Angular 2:Components: The earlier version of Angular had a focus of Controllers but now has changed the focus to having components over controllers. Components help to
build the applications into many modules. This helps in better maintaining the
application over a period of time.

TypeScript: The newer version of Angular is based on TypeScript. This is a
superset of JavaScript and is maintained by Microsoft.

Services: Services are a set of code that can be shared by different components
of an application. So for example, if you had a data component that picked data
from a database, you …