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Producing Standard Tab and Menu Icons for Android
When designing Android apps or designing graphics for Android apps, it is essential to conform to srict guidelines. Re-using images designed for other systems, especially desktop-based, is generally not a good idea. Foreign icons will look weird at best, or will render your Android apps appear hardly recognizable at worst.Making Standard Tab and Menu Icons for Android Description: When developing Android apps or designing graphics for Android apps, it is essential to conform to certain guidelines. Using icons designed for other systems, especially desktop-based, is not a good idea. Foreign images will look weird at best, or will make your Android apps hardly recognizable at worst. Body: There are 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 UI. Tab icons must be supplied in two different states: unselected and selected. It is required that tab icons are drawn as simple, flat shapes as opposed to images shown in 3D or isometric projection.
Android OS and Android apps can run on a variety of hardware platforms using a wide range of hardware. In reference to icon graphics, those platforms can have different display sizes, screen resolutions, pixel density and dimensions. To accommodate the wide range of screens, Android developers must provide 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. Inner dimensions 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 the user when they press the Menu button. Similar to tab icons, menu icons should be flat, grayscale images. Like tab icons, developers should not use 3D or isometric projections.
Pixel sizes for menu icons are described in a slightly more comprehensive way as opposed to to tab icons. Instead of two sizes described for tab icons (inner shape and boundary box), the inner shape of menu icons can be smaller or larger depending on whether they are square-shaped or not. 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 size across the two icon types.
The outer dimensions for low, medium, and high resolution icons are defined 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 designing your own images matching these guidelines, Android developers have an option of getting stock images from professional designers. As an example, Android Tab Icons by Aha-Soft include 112 unique tab graphics in both states and all three standard sizes. Should additional resolutions be required, developers can produce images 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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