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Producing Tab and Menu Icons for Android Apps
When designing Android apps or drawing graphics for mobile apps, it is essential to follow certain guidelines. Re-using graphics designed for different operating systems, especially desktop-based, is not a good idea. Foreign graphics will look weird at best, or will make your Android apps appear hardly recognizable at worst.Designing Tab and Menu Icons for Android Apps Description: When developing mobile apps or drawing graphics for mobile apps, one must follow certain guidelines. Using icons made for different systems, especially desktop-based, is 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 available 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 interface. Tab icons must be supplied in two distinct states: selected and unselected. It is required that tab icons are created as simple, flat shapes as opposed to images shown in 3D or isometric projection.
Android OS and Android apps can run on a wide range of hardware platforms employing a wide range of hardware. In connection to icon images, those devices can have different screen sizes, display resolutions, pixel dimensions and density. To accommodate the variety of screens, Android developers should provide all tab icons used in their apps in at least three resolutions to be drawn on low, medium, and high density displays. Resolution-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 supplying all three standard sizes, designers can ensure that their apps will be shown properly on a wide range of devices 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.
Pixel sizes for menu icons are defined in a slightly more comprehensive way as opposed to to tab icons. Instead of just two sizes described for tab graphics (inner shape and boundary box), the inner shape of menu icons can be smaller or larger depending on their shape. If a menu icon is square-shaped, its dimensions 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 low, medium, and high resolution 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 dots. 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 drawing your own images matching these guidelines, Android developers have an option of getting ready-made icons from professional designers. For example, Android Tab Icons by Aha-Soft offer 112 unique tab images in both states and all three standard sizes. If an additional size is needed, developers can render icons at any size 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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