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Producing Tab and Menu Icons for Android Apps
When designing Android apps or drawing graphics for Android apps, it is essential to conform to srict guidelines. Using graphics designed for other operating systems, especially desktop-based, is generally not a good idea. Foreign graphics will look weird at best, or will make your Android apps appear 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 certain guidelines. Using images designed for other operating systems, especially desktop-based, is not a good idea. Foreign graphics will look out of place at best, or will make your Android apps appear hardly recognizable at worst. Body: There exist strict guidelines available in reference to Android icons. Different design guidelines are published for tab icons and menu images.
Tab icons represent individual tabs in tabbed interface. Tab icons must be supplied in two different states: selected and unselected. It is required that tab icons are drawn as simple, flat shapes as opposed to icons shown in 3D or isometric projection.
Android OS and Android apps are used on a wide range of hardware platforms using a wide range of hardware. In connection to icon images, those platforms can have different display sizes, screen resolutions, pixel density and dimensions. To accommodate the wide range of displays, Android developers should supply all tab icons used in their apps in at least three resolutions to be displayed on low, medium, and high density displays. 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 supplying all three standard sizes, designers can ensure that their apps will be shown 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, greyscale images. Just as tab icons, developers cannot use 3D or isometric projections.
Pixel resolutions for menu icons are described in a slightly more complex way compared to tab icons. Instead of just two resolutions described for tab graphics (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 having two different size limits is to establish a consistent visual size across the two icon types.
The outer dimensions for low, medium, and high resolution 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 boxes, while high-definition images should fit into 44x44 and 48x48 pixel boundaries respectively.
Instead of designing your own icons matching these guidelines, Android developers have an option of obtaining stock graphics from professional designers. For example, Android Tab Icons by Aha-Soft offer 112 unique tab images in both states and all three standard resolutions. If an additional size is needed, 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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