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Making Tab and Menu Icons for Android
When designing mobile apps or drawing graphics for Android apps, one must follow certain guidelines. Using graphics made for other operating systems, especially desktop-based, is not a good idea. Foreign icons will look weird at best, or will make your Android apps appear hardly recognizable at worst.Producing Standard Tab and Menu Icons for Android Apps Description: When developing Android apps or designing graphics for Android apps, one must follow srict guidelines. Re-using images 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 hardly recognizable at worst. Body: There are strict guidelines available for designing standard-compliant Android icons. Different design guidelines are published for tab icons and menu images.
Tab icons represent individual tabs in tabbed UI. Tab icons must be supplied in two different states: unselected and selected. It is recommended that tab icons are created as simple, flat shapes as opposed to images drawn in 3D or isometric projection.
Android OS and Android apps are used on a multitude of different platforms employing a wide range of hardware. In reference to icon images, those platforms can have different screen sizes, display resolutions, pixel density and dimensions. To accommodate the wide range of displays, Android developers should provide all tab icons used in their apps in at least three resolutions to be shown on low, medium, and high density displays. 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 including all three standard sizes, designers 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, grayscale images. Just as tab icons, developers should not use 3D or isometric projections.
Screen resolutions for menu icons are described in a slightly more complex way compared to tab icons. Instead of two resolutions 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 dimensions should be smaller than for icons with different shapes. 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 defined 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 boundaries respectively.
Instead of designing your own graphics conforming to these guidelines, Android developers have an option of getting ready-made graphics from professional designers. As an example, Android Tab Icons by Aha-Soft include 112 unique tab graphics in both states and all standard resolutions. If an additional size is needed, developers can render icons at any resolution by accessing 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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