The component tree provides a visual overview of the hierarchy of the user interface design.
Android studio time palette android#
Note that if you find the image of the device frame surrounding the display layout distracting, it can be turned off by selecting the settings menu in the toolbar (represented by the gear icon) and toggling off the Include Device Frames (if available) option.Ĭ – Component Tree – As outlined in the previous chapter (Understanding Android Views, View Groups and Layouts) user interfaces are constructed using a hierarchical structure. The device model represented by the layout can be changed at any time using a menu located in the toolbar. This layout allows for direct manipulation of the design in terms of allowing views to be selected, deleted, moved and resized. Items may be added to the layout either by dragging a view component from the palette and dropping it at the desired position on the layout, or by clicking on a widget in the palette and then clicking at the location on the layout where it is to be positioned.ī – Device Screen – The device screen provides a visual “what you see is what you get” representation of the user interface layout as it is being designed. These are grouped into categories for easy navigation. In design mode, the user interface can be visually manipulated by directly working with the view palette and the graphical representation of the layout.įigure 15-1 highlights the key areas of the Android Studio Designer tool in design mode:Ī – Palette – The palette provides access to the range of view components provided by the Android SDK. As such, the Designer tool operates in two distinct modes referred to as Design mode and Text mode. Under the surface, the Designer tool actually constructs an XML resource file containing the definition of the user interface that is being designed. Further, a wide variety of properties relating to the selected view may be modified using the Properties panel. Once a view has been placed on the canvas, it can be moved, deleted and resized (subject to the constraints of the parent view). Regardless of the level of complexity, the Android Studio Designer tool significantly simplifies the task of designing and implementing Android user interfaces.Īs has been demonstrated in previous chapters, the Designer tool provides a “what you see is what you get” (WYSIWYG) environment in which views can be selected from a palette and then placed onto a canvas representing the display of an Android device. Invariably these interactions take place through the application’s user interface.Ī well designed and implemented user interface, an important factor in creating a successful and popular Android application, can vary from simple to extremely complex, depending on the design requirements of the individual application. Most Android devices come equipped with a touch screen and keyboard (either virtual or physical) and taps and swipes are the primary form of interaction between the user and application. It is difficult to think of an Android application concept that does not require some form of user interface. Purchase the fully updated Android Studio Chipmunk Edition of this publication in eBook ($29.99) or Print ($46.99) formatĪndroid Studio Chipmunk Essentials - Java Edition Print and eBook (PDF) editions contain 94 chapters and over 800 pages You are currently reading the Android Studio 1.x - Android 5 Edition of this book.
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