XML Exercises - Declare UI elements in XML - 07/12/2017 01:21 EST

A layout defines the visual structure for a user interface, such as the UI for an activity or app widget. You can declare a layout in XML. Declare UI elements in XML. Android provides a straightforward XML vocabulary that corresponds to the View classes and subclasses, such as those for widgets and layouts. The advantage to declaring your UI in XML is that it enables you to better separate the presentation of your application from the code that controls its behavior. Your UI descriptions are external to your application code, which means that you can modify or adapt it without having to modify your source code and recompile. Android Layout Types There is number of Layouts provided by Android which you will use in almost all the Android applications to provide the different view, look and feel. i. ConstraintLayout ii. LinearLayout (Vertical) iii. LinearLayout(Horizontal) iv. RelativeLayout v. TableLayout vi. GridLayout vii. FrameLayout Write the XML Using Android's XML vocabulary, you can quickly design UI layouts and the screen elements they contain, in the same way, you create web pages in HTML — with a series of nested elements. Each layout file must contain exactly one root element, which must be a View or ViewGroup object. Once you've defined the root element, you can add additional layout objects or widgets as child elements to gradually build a View hierarchy that defines your layout. Assignment Description: In this work, you need to write XML codes to demonstrate your understanding of the SEVEN (7) types of layouts. Browse through the Google Play to find your favorite app to redesign the graphic user interface (GUI) with the suitable type of Layout. For each GUI, you need to reference to the original app website address. What do you have to hand in? Project XML Code, a screen print: Provide a single zipped file containing all directories/files in your Android project. Therefore, all classes, source code, resources, manifest file etc will be included. You should also include a screen print of the main opening menu/screen of your app. Include your name in the zipped file name e.g. [login to view URL]