(MUSIC) Skales Ijo Ayo (Remix) ft Pasuma & Olamide

Amidst the success of his debut album “Man Of The Year”; Baseline Music front man Skales a.k.a “S to the K” teams up Fuji royal Pasuma and the street-hop/rap titan Olamide as he returns with the remix to one of his album cuts – “Ijo Ayo”.

DOWNLOAD Skales – Ijo Ayo (Remix) ft. Pasuma & Olamide

Android Fundamentals

Android Fundamental

What is Android?

Android Operation System

Android is an operating system based on Linux with a Java programming interface.
The Android Software Development Kit (Android SDK) provides all necessary tools to develop Android applications. This includes a compiler, debugger and a device emulator, as well as its own virtual machine to run Android programs. 
Android is currently primarily developed by Google. 
Android allows background processing, provides a rich user interface library, supports 2-D and 3-D graphics using the OpenGL libraries, access to the file system and provides an embedded SQLite database. 
Android applications consist of different components and can re-use components of other applications. This leads to the concept of a task in Android; an application can re-use other Android components to archive a task. For example you can trigger from your application another application which has itself registered with the Android system to handle photos. In this other application you select a photo and return to your application to use the selected photo. 

Google Play (Android Market)

Google offers the Google Play service in which programmers can offer their Android application to Android users. Google phones include the Google Play application which allows to install applications. 
Google Play also offers an update service, e.g. if a programmer uploads a new version of his application to Google Play, this service will notify existing users that an update is available and allow to install it. 
Google Play used to be called Android Market. 

Security and permissions

Security concept in Android

During deployment on an Android device, the Android system will create a unique user and group ID for every Android application. Each application file is private to this generated user, e.g. other applications cannot access these files. 
In addition each Android application will be started in its own process. 
Therefore by means of the underlying Linux operating system, every Android application is isolated from other running applications. 
If data should be shared, the application must do this explicitly, e.g. via a service or a content provider. 

Permission concept in Android

Android also contains a permission system. Android predefines permissions for certain tasks but every application can define additional permissions. 
An Android application declare its required permissions in its AndroidManifest.xml configuration file. For example an application may declare that it requires access to the Internet. 
Permissions have different levels. Some permissions are automatically granted by the Android system, some are automatically rejected. 
In most cases the requested permissions will be presented to the user before installation of the application. The user needs to decide if these permissions are given to the application. 
If the user denies a permission required by the application, this application cannot be installed. The check of the permission is only performed during installation, permissions cannot be denied or granted after the installation. 
Not all users pay attention to the required permissions during installation. But some users do and they write negative reviews on Google Play. 

Android applications and tasks

Application

An Android application consists out of different Android components and additional resources. The Android system knows activities, services, broadcast receiver and content provider as components. 

Tasks across application borders

Android application components can connect to components of other Android applications to create tasks. For example an application which allows you to make a photo can start an email application and instruct this application to create a new email and attach a photo to this email.