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 Zircon with Shadow Icon |
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Designing Tab and Menu Icons for Android
When developing mobile apps or designing graphics for Android apps, it is essential to conform to certain guidelines. Using graphics made for other systems, especially desktop-based, is not a good idea. Foreign icons will look out of place at best, or will render your Android apps hardly recognizable at worst.Producing Standard Tab and Menu Icons for Android Apps Description: When developing Android apps or designing graphics for mobile apps, one must conform to certain guidelines. Re-using graphics made for other operating systems, especially desktop-based, is 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 exist 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: selected and unselected. It is required that tab icons are drawn as simple, flat shapes as opposed to graphics shown 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 graphics, those devices can have different screen sizes, screen resolutions, pixel dimensions and density. To accommodate the variety of screens, Android developers must 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. The size of the shape itself should not exceed 22x22, 28x28, and 42x42 pixels respectively. By providing all three standard sizes, developers can ensure that their apps will be shown properly on a wide range of platforms running the Android OS.
Menu icons are displayed in the "options" menu, and are displayed to users 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 defined in a slightly more comprehensive way as opposed to to tab icons. Instead of just two sizes defined 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 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, mdpi icons should fit 30x30 and 32x32 pixel boundaries, while high-definition images should fit into 44x44 and 48x48 pixel rectangles respectively.
Instead of drawing your own graphics conforming to these guidelines, Android developers have an option of obtaining ready-made graphics from professional designers. For example, Android Tab Icons by Aha-Soft offer 112 unique tab icons in both states and all three standard sizes. Should additional resolutions be required, developers can produce 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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