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Designing Standard Tab and Menu Icons for Android
When developing mobile apps or designing graphics for mobile apps, it is essential to conform to certain guidelines. Using icons designed for different systems, especially desktop-based, is generally not a good idea. Foreign graphics will look weird at best, or will make your Android apps hardly recognizable at worst.Producing Standard Tab and Menu Icons for Android Description: When developing Android apps or drawing graphics for mobile apps, one must follow certain guidelines. Re-using icons designed for different operating systems, especially desktop-based, is generally not a good idea. Foreign graphics will look out of place at best, or will render your Android apps appear hardly recognizable at worst. Body: There exist precise guidelines published for designing standard-compliant Android icons. Different design guidelines are published for tab icons and menu graphics.
Tab icons are drawn in individual tabs in tabbed interface. Tab icons should be supplied in two distinct states: selected and unselected. It is recommended that tab icons are created as simple, flat shapes as opposed to icons shown in 3D or isometric projection.
Android OS and Android apps are used on a variety of different platforms employing a wide range of hardware. In connection to icon images, those devices can have different display sizes, display resolutions, pixel density and dimensions. To accommodate the variety of displays, Android developers should supply all tab icons used in their apps in at least three resolutions to be drawn on low, medium, and high density screens. Resolution-wise, the outer boundaries for the three sizes are defined as 24x24, 32x32, and 48x48 pixels. Inner dimensions should not exceed 22x22, 28x28, and 42x42 pixels respectively. By providing all three standard resolutions, developers can ensure that their apps will be shown properly on a variety of platforms running the Android OS.
Menu icons are used in the "options" menu, and are shown to the user when they press the Menu button. Similar to tab icons, menu icons should be flat, greyscale images. Just as tab icons, developers should not use 3D or isometric projections.
Screen resolutions for menu icons are described in a slightly more comprehensive way as opposed to to tab icons. Instead of two resolutions described for tab graphics (inner shape and boundary box), the inner shape of menu icons can be smaller or bigger depending on whether they are square-shaped or not. If a menu icon is square-shaped, its size should be smaller than for icons shaped otherwise. The reason for having two different sizes is to establish a consistent visual weight 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 is 22x22 pixels, while non-square icons should fit into a boundary box sized 24x24 pixels. Similarly, mdpi icons should fit 30x30 and 32x32 pixel boxes, 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 icons from professional designers. For example, Android Tab Icons by Aha-Soft offer 112 unique tab icons in selected and unselected states and all three standard sizes. Should additional resolutions be required, developers can render icons at any size by opening scalable vector sources. Android Tab Icons can be viewed and downloaded at http://www.aha-soft.com/stock-icons/android-tab-icons.htm.
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