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Producing Standard Tab and Menu Icons for Android Apps
When developing Android apps or drawing graphics for Android apps, one must follow certain guidelines. Using images designed for different systems, especially desktop-based, is generally not a good idea. Foreign icons will look out of place at best, or will render your Android apps hardly recognizable at worst.Making Standard Tab and Menu Icons for Android Description: When designing Android apps or drawing graphics for mobile apps, one must follow certain guidelines. Using graphics designed for different systems, especially desktop-based, is 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 exist strict guidelines available for designing standard-compliant Android icons. Different design guidelines are published for tab icons and menu icons.
Tab icons are drawn in individual tabs in tabbed UI. Tab icons should be supplied in two different states: selected and unselected. It is required that tab icons are created as simple, flat shapes as opposed to images 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 connection to icon graphics, those platforms can have different screen sizes, screen resolutions, pixel dimensions and density. 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 displayed on low, medium, and high density screens. 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 providing all three standard resolutions, designers can ensure that their apps will display properly on a wide range of platforms running the Android OS.
Menu icons are drawn 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, greyscale images. Just as tab icons, developers cannot use 3D or isometric projections.
Pixel resolutions for menu icons are defined in a slightly more complex way compared to tab icons. Instead of just two resolutions defined 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 shaped otherwise. 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 rectangles respectively.
Instead of drawing your own icons conforming to these guidelines, Android developers have an option of obtaining ready-made icons from professional designers. As an example, Android Tab Icons by Aha-Soft include 112 unique tab graphics in both states and all three standard resolutions. If an additional size is needed, developers can render icons 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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