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Designing Standard Tab and Menu Icons for Android
When designing mobile apps or drawing graphics for mobile apps, one must follow srict guidelines. Using graphics designed for other operating systems, especially desktop-based, is generally not a good idea. Foreign icons 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 designing Android apps or designing graphics for Android apps, one must follow srict guidelines. Using icons designed for other operating systems, especially desktop-based, is generally not a good idea. Foreign images will look out of place at best, or will make your Android apps appear hardly recognizable at worst. Body: There are strict guidelines available in reference to Android icons. Different design guidelines are available for tab icons and menu images.
Tab icons are drawn in individual tabs in tabbed UI. Tab icons should be supplied in two different states: selected and unselected. It is recommended that tab icons are drawn as simple, flat shapes as opposed to images 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 screen sizes, display resolutions, pixel dimensions and density. To accommodate the variety of displays, Android developers must supply all tab icons used in their apps in at least three resolutions to be displayed on low, medium, and high density screens. Resolution-wise, the outer boundaries for the three sizes are defined as 24x24, 32x32, and 48x48 pixels. The size of the shape itself should not exceed 22x22, 28x28, and 42x42 pixels respectively. By supplying all three standard sizes, developers can ensure that their apps will be shown properly on a variety 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 are specified as flat, grayscale images. Like tab icons, developers should not use 3D or isometric projections.
Pixel resolutions for menu icons are defined in a slightly more complex way as opposed to 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 larger 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 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 should be 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 rectangles respectively.
Instead of drawing your own icons matching these guidelines, Android developers have an option of getting stock icons from professional designers. As an example, Android Tab Icons by Aha-Soft offer 112 unique tab images in selected and unselected states and all standard resolutions. Should additional resolutions be required, developers can render images at any resolution by accessing 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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