This gives you a full tree of all of the widgets and containers inside of this layout resource. Towards the bottom-left corner is the component tree: ![]() A button to choose what language to use for determining which of your string resources gets used in the previewĪ couple of those - particularly the theme selector - pertain to topics that we will explore later in the book.A button to choose what theme to use for presenting the UI of the preview. ![]() A drop-down to choose what API level should be used for the simulated UI of the preview.A drop-down to choose what device size and resolution should be used for the preview, culled from your emulator images and the available device definitions.A toggle to control whether you are seeing the layout as applied to portrait or landscape perspectives.A drop-down to toggle whether you see the preview, the blueprint, or both.Preview Toolbarįrom left to right, the toolbar contains: It will become more useful with more complex layout resources. And, for some types of containers, it will show some of the sizing and positioning rules that you are using for children of that container:įor a trivial layout resource, the blueprint view does not show you much. However, rather than showing you a preview of what your UI might look like, it visually represents what widget and container classes you are using. This also visually depicts your layout resource. To the right of the preview area (or below it) is the blueprint view. If you drag items out of the Palette and drop them into the preview area, they will be added to your layout resource. This pours your layout resource contents into a preview frame that has aspects of a regular Android device, such as the navigation bar at the bottom and the status bar at the top. The one on the left or top is a preview of what your UI should resemble, if this layout were used for the UI of an activity: The main central area of the graphical layout editor consists of two perspectives on your layout resource contents. Some - such as the RecyclerView shown in the above screenshot - are from libraries and may have a “download” icon adjacent to them to help illustrate that.Īs we cover how to use the graphical layout editor, we will see how to create and configure several of these widgets, containers, and other items. A few are not strictly widgets or containers but rather other sorts of XML elements that you can have in a layout resource (e.g.,, ). They are divided into categories (“Widgets”, “Text”, “Layouts”, etc.) with many options in each. This lists all sorts of widgets and containers that you can drag and drop. The upper-left side of the graphical layout editor is the Palette tool: So, with that in mind, let’s review what it offers. However, there has been a bit more variation in how IDEs set up those editors, and Android Studio has its own approach to this sort of tool. The graphical editor also resembles those used in IDEs for decades. If you have done software development using other IDEs or editors, the XML editor in Android Studio should be akin to what you are used to. The XML editor is very useful but is also very typical: it offers basic editing with some amount of auto-completion to reduce the amount of typing that you need. Text View in Layout Editor with Preview and Attributes PanesĬlicking on items in the preview will select the corresponding XML element in the text editor. ![]() The “Split” one gives you both the text editor plus parts of the graphical layout editor: The “Code” one allows you to edit the raw XML that is the actual content of the layout resource: The “Design” one represents the graphical layout editor: One will be selected at any point in time. ![]() Towards the upper-right of the layout resource editing tab, you will see that it has a few toolbar buttons:Īndroid Studio Graphical Layout Editor, with Toolbar Buttons Highlighted If you open a layout resource in Android Studio, you will see one of two perspectives: XML, or a drag-and-drop graphical editor.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |