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Producing Standard Tab and Menu Icons for Android Apps
When developing mobile apps or designing graphics for mobile apps, one must follow certain guidelines. Using images made for other systems, especially desktop-based, is not a good idea. Foreign graphics will look weird at best, or will render your Android apps hardly recognizable at worst.Designing Standard Tab and Menu Icons for Android Description: When developing mobile apps or drawing graphics for Android apps, one must follow srict guidelines. Using images designed for different operating systems, especially desktop-based, is generally not a good idea. Foreign images will look weird at best, or will make your Android apps hardly recognizable at worst. Body: There exist strict guidelines published in reference to Android icons. Different design guidelines are available for tab icons and menu graphics.
Tab icons are drawn in individual tabs in tabbed UI. Tab icons should be supplied in two different states: unselected and selected. It is required that tab icons are created as simple, flat shapes as opposed to icons drawn in 3D or isometric projection.
Android OS and Android apps can run on a variety of different platforms employing a wide range of hardware. In reference to icon images, those platforms can have different display sizes, display resolutions, pixel dimensions and density. To accommodate the wide range of screens, Android developers should supply all tab icons used in their apps in at least three resolutions to be shown on low, medium, and high density screens. Pixel-wise, the outer boundaries for the three resolutions are defined as 24x24, 32x32, and 48x48 pixels. Inner dimensions should not exceed 22x22, 28x28, and 42x42 pixels respectively. By providing all three standard sizes, developers can ensure that their apps will display properly on a wide range of platforms running the Android OS.
Menu icons are displayed in the "options" menu, and are shown to users when they press the Menu button. Similar to tab icons, menu icons should be flat, grayscale images. Like tab icons, developers cannot use 3D or isometric projections.
Screen resolutions for menu icons are defined in a slightly more comprehensive way compared to tab icons. Instead of just two sizes described for tab icons (inner shape and boundary box), the inner shape of menu icons can be smaller or bigger depending on their shape. If a menu icon is square-shaped, its resolution should be smaller than for icons with different shapes. The reason for specifying two different size limits is to establish a consistent visual size across the two icon types.
The outer dimensions for ldpi, mdpi and hdpi icons are described as 36x36, 48x48, and 72x72 pixels respectively. Inner shapes for square, low-definition icons should be 22x22 pixels, while non-square icons should fit into a boundary box sized 24x24 pixels. Similarly, medium-definition icons should fit 30x30 and 32x32 pixel boundaries, while high-definition images should fit into 44x44 and 48x48 pixel boxes respectively.
Instead of designing your own icons conforming to these guidelines, Android developers have an option of ordering ready-made images from professional designers. As an example, Android Tab Icons by Aha-Soft include 112 unique tab icons in both states and all three standard sizes. Should additional resolutions be required, developers can render images at any resolution by opening scalable vector sources. Android Tab Icons can be previewed and downloaded at http://www.aha-soft.com/stock-icons/android-tab-icons.htm.
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