Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.GRID ARCHITECTURE ARTICLE 6: The Grid Architecture Development Processīy Eamonn McCormick, Stuart McCafferty & David Forfia The following aspect ratios are recommended for use across your UI:Ĭontent and code samples on this page are subject to the licenses described in the Content License. To maintain consistency in your layout, use a consistent aspect ratio onĮlements like images, surfaces, and screen size. Aspect ratiosĪn aspect ratio is the proportion of an element's width to its height. Androidīreaks window size classes into 3: Compact, Medium, and Expanded. Window size classes are a set of opinionated viewport breakpoints that help youĭesign, develop, and test responsive and adaptive application layouts. Figure 4: Four-column gridĬheck out the Material 3 Canonical layouts page for details onĬreating flexible layouts across form factors. Learn the basics on how to set up a column grid andĪpply content in Layout basics. Align with an underlying grid to align content, but Figure 3: 8-dp grids are ideal for most UI elements, whileĪ 4-dp grid is better for smaller elements such as icons Column gridĬolumns build a grid structure to provide vertical definition to a layout byĭividing content within the body area. Smaller elements such as icons, type, and some elements within components areīest aligned to a 4 dp grid. Video 1: Showing an 8 dp grid highlighting 8 dp increments That's OK! You can stillĭownload the video and watch it with a video player. Android UI utilizes an 8 dp grid for layout, components, andĪlas, your browser doesn't support HTML5 video. Figure 2: Party cantaloupe in their respective densitiesĭp = (width in pixels * 160) / screen density Grids Baseline gridīuilding with an underlying grid helps create consistent spacing and alignmentĪcross your UI. Used for vector drawables) each correspond to a resource file of your app. The most commonly used densityīuckets are mdpi, hdpi, xhdpi, xxhdpi, and xxxhdpi ( nodpi andĪnydpi refer to a bucket that does not scale per device resolution, typically This is why you should not declareĪndroid groups ranges of screen densities into "buckets" and uses them toĭeliver the optimal set of assets to your device. Screens, and smaller on high-density screens. Result, UI elements of the same pixel dimensions appear larger on low-density High-density screens have more pixels per inch than low-density ones. See how toĪndroid uses these units to help scale and translate across the range of Users who have larger text settings forĪccessibility see font sizes match their text size preferences. The primary difference between these units of measurement is that scalable Important: Always specify font sizes in sp units or scalable pixels. The Android system calculates the actual font size to use based on theĭevice and the user's preference set in the Settings app of their Android The default value of an sp is the same as the default value for aĭp.
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