while editing your layout in Code view. The Layout Editor is especially powerful when However, you have to set all the constraints afterwards in the Attributes window or by dragging anchors. In the Text Editor, you can define the visual aspects of components with the XML code. There are a lot of components. Note that Open your original layout file, click the, In the dropdown list, select a suggested variant, such as, Open your original layout file, and click the, In the dialog that appears, define the resource qualifiers for the variant. Don’t worry; you can still switch view and edit XML with Text editor if you want, see below. Many components have text as part of their visual presentation. With Android Studio Layout Editor we can build layouts by dragging components onto the screen instead of writing the layout XML by hand. Also, because these are not fixed values, Android can resize and move them around with rules you have set. Find items in the Palette In the Component Tree, right-click the layout, and then click Convert your-layout-type to ConstraintLayout. a layout manager that's compatible with Android 2.3 (API level 9) and higher. for errors or an orange triangle exclamation icon The margin c, can learn more on this link about responsive design, Change to “Color” in the selection on the left. Figure 4. This opens the Layout Editor. ConstraintLayout. For example, we have a search for the Gravity attribute (first search with filtered attributes and second with all attributes). configure the layout appearance. When you start using layout editor, the “All attributes” section will be hidden in a separate section (for older versions you will see a link at the bottom of the attributes palette). Build a Responsive UI with ConstraintLayout. When you To use a suggested layout variant, do the following: If you'd like to create your own layout variant, do the following: When you have multiple variations of the same layout, you can switch between Figure 2. Open the Layout Inspector To open the Layout Inspector, do the following: Run your app on a connected device or emulator. The Android Studio Layout Editor As has been demonstrated in previous chapters, the Layout Editor 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. The component tree is important when you have some nested components. configurations. Material Guidelines documentation. The Layout Inspector in Android Studio allows you to compare your app layout with design mockups, display a magnified or 3D view of your app, and examine details of its layout at runtime. ImageView, or a RecyclerView from within the Layout Editor. When you open an XML layout file, the design editor opens by default, as shown automatically create constraints the home page of the appearance of your layout in the editor. To see all known issues in a window below the editor, click Attributes are properties for components in your layout. Adding a colour as a resource value is useful because you can reuse it everywhere in the app. An error might indicate an invalid entry for a layout-defining attribute, as The Layout Editor enables you to quickly build layouts by dragging UI elements With constraints, you are describing the position of components on the screen. Double-click content_main.xml to open it for editing. Shows the view hierarchy for your layout. If no specific entry exists for the item, then the command opens Above the attributes, there is a search field you can use; this is an excellent way of looking for those “hidden” attributes. In a TextView, you can choose between different sample text categories. into a visual design editor instead of writing layout XML by hand. to another kind of layout. Palette into the design editor. create layout variations for specific device configurations, Naming is important for linking of objects to work. building a layout with ConstraintLayout, attribute values are resource references. For the best colour out there, magenta :D, you write “#ff00ff”. Android Studio 2.2 Preview includes a new layout editor that's specially-built for a new layout called ConstraintLayout. appear when you use a hard-coded value where a resource reference is The buttons in the top row of the design editor enable you to configure the You can style it later. This page provides an overview of the Layout Editor. Most of the time, attributes will describe visual aspects of components, but sometimes they are used to set layout behaviour as well and set parameters for tools. Here is an example of a red colour. Open an existing layout in Android Studio, and click the Design button in the top-right corner of the editor window. RecyclerView to properly display the sample data. If you are using ConstraintLayout, you can Like we said before, we at CodeBrainer decided to use the name: “component” for all the elements that go on layouts or views, but you can also hear other names for them like views and widgets in some cases even controls. display the Design-time View Attributes window, as shown in figure 4. Studio 3.2 and later, you can add sample preview data to a TextView, an You can create a new layout in one of the following ways: A layout variant is an alternative version of an existing layout that is you can select from hundreds of fonts by following these steps: Content and code samples on this page are subject to the licenses described in the Content License. This window is available only when the design editor is open, The second one shows all the other attributes in alphabetical order. For more information about how to create layouts for different screens, see If you want to set a solid background using values, you must add a new colour value. Here you find Buttons, TextViews, Spinners, ImageViews etc. With a guideline, you can set constraints for each part of the screen separately.