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Designing Tab and Menu Icons for Android
When developing Android apps or designing graphics for Android apps, it is essential to follow srict guidelines. Re-using graphics designed for different operating systems, especially desktop-based, is generally not a good idea. Foreign graphics will look weird at best, or will render your Android apps hardly recognizable at worst.Designing Tab and Menu Icons for Android Description: When developing mobile apps or designing graphics for Android apps, it is essential to follow certain guidelines. Re-using icons designed for other systems, especially desktop-based, is generally not a good idea. Foreign graphics will look out of place at best, or will make your Android apps hardly recognizable at worst. Body: There exist precise guidelines published 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 UI. Tab icons should be provided in two distinct states: unselected and selected. It is recommended that tab icons are drawn as simple, flat shapes as opposed to images drawn 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 reference to icon graphics, those devices can have different screen sizes, display resolutions, pixel density and dimensions. To accommodate the wide range of displays, Android developers must 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 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 display properly on a variety of platforms running the Android OS.
Menu icons are displayed in the "options" menu, and are displayed to the user when they press the Menu button. Similar to tab icons, menu icons are specified as flat, greyscale images. Like tab icons, developers should not use 3D or isometric projections.
Screen resolutions for menu icons are defined in a slightly more complex way compared to tab icons. Instead of two sizes described for tab graphics (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 weight 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 should be 22x22 pixels, while non-square icons should fit into a boundary box sized 24x24 dots. Similarly, mdpi 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 images matching these guidelines, Android developers have an option of obtaining ready-made graphics from professional designers. For example, Android Tab Icons by Aha-Soft include 112 unique tab graphics in both states and all standard sizes. If an additional size is needed, developers can produce icons at any resolution 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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