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Designing Tab and Menu Icons for Android Apps
When designing Android apps or drawing graphics for mobile apps, one must follow srict guidelines. Using graphics made for different operating systems, especially desktop-based, is not a good idea. Foreign images will look weird at best, or will make your Android apps appear hardly recognizable at worst.
Making Tab and Menu Icons for Android Apps
Description:
When developing Android apps or designing graphics for Android apps, one must conform to srict guidelines. Re-using graphics designed 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 hardly recognizable at worst.
Body:
There exist precise guidelines available in reference to Android icons. Different design guidelines are published for tab icons and menu icons.
Tab icons represent individual tabs in tabbed interface. Tab icons must be supplied in two distinct states: unselected and selected. It is required that tab icons are created as simple, flat shapes as opposed to icons 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 connection to icon graphics, those platforms can have different display sizes, screen resolutions, pixel density and dimensions. To accommodate the wide range 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 displays. Pixel-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 including all three standard resolutions, developers 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 users when they press the Menu button. Similar to tab icons, menu icons are specified as flat, grayscale images. Just as tab icons, developers should not use 3D or isometric projections.
Pixel sizes for menu icons are defined in a slightly more complex way compared to tab icons. Instead of just two resolutions described for tab icons (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 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 boundaries, while high-definition images should fit into 44x44 and 48x48 pixel boundaries respectively.
Instead of designing your own icons matching these guidelines, Android developers have an option of obtaining ready-made images from professional designers. As an example, Android Tab Icons by Aha-Soft offer 112 unique tab icons in both states and all standard resolutions. Should additional resolutions be required, developers can render graphics at any size 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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