Coastal Bulletin
Coastal Bulletin
Meaning of Android App Android is a Software Application running on Android platform and built in mobile application. Android is a mobile operating system based on a modified version of the Linux kernel and it is a open source software.
Android Application has 4 components
1. Activities : An Activity is an application component which provides a screen by which users can interact in order to do some actions, such as send an email , dial the phone, take a photo or view a map. An activity can start other activities, even the activities that lives in different applications.
2. Services : A Service is an application component which performs long-running operations in the background without a user interface.
3. Broadcast receivers : Broadcast receivers is an Android component that allows the user to register for application or system events. Once the event occurs all the registered receivers are notified by the Android runtime.
4. Content providers : A content provider manages access to the central repository of data. A content provider is part of an Android application, that provides its own User Interface for working with the data. However, content providers are majorly used by other applications, which access the provider using provider client object.
The Fragment class is one of the important part of an application's design, especially while designing for large screen devices, such as tablets. A fragment signifies a distinct part of an activity's behavior, including the associated User Interface. It has its own lifecycle which is identical to that of the activity and can exist next to other fragments which are embedded in the activity. During the time when activity is running, you can insert or add and remove fragments and include each fragment in a back stack that's controlled by the activity, allowing the user to navigate backwards through the fragment states, without evacuating the activity.
Types of Mobile Apps by Technology
There are three basic types of mobile apps
Classes
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