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Producing Tab and Menu Icons for Android
When developing mobile apps or designing graphics for Android apps, it is essential to follow certain guidelines. Re-using graphics made for other systems, especially desktop-based, is not a good idea. Foreign graphics will look weird at best, or will make your Android apps hardly recognizable at worst.Designing Tab and Menu Icons for Android Description: When designing Android apps or drawing graphics for mobile apps, one must conform to certain guidelines. Re-using images designed for different 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. Body: There are 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 should be supplied in two different states: selected and unselected. It is required that tab icons are drawn 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 hardware platforms using a wide range of hardware. In reference to icon images, those platforms can have different screen sizes, screen resolutions, pixel dimensions and density. To accommodate the wide range of displays, Android developers should 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. Inner dimensions should not exceed 22x22, 28x28, and 42x42 pixels respectively. By including all three standard resolutions, developers can ensure that their apps will display properly on a variety of platforms 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 should be flat, greyscale images. Just as tab icons, developers cannot use 3D or isometric projections.
Screen sizes for menu icons are defined in a slightly more complex way as opposed to to tab icons. Instead of just two sizes described for tab graphics (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 size should be smaller than for icons with different shapes. The reason for having two different size limits is to establish a consistent visual size across the two icon types.
The outer dimensions for low, medium, and high resolution icons are described 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 pixels. Similarly, medium-definition icons should fit 30x30 and 32x32 pixel boxes, while high-definition images should fit into 44x44 and 48x48 pixel rectangles respectively.
Instead of drawing your own images matching these guidelines, Android developers have an option of obtaining stock graphics from professional designers. For example, Android Tab Icons by Aha-Soft include 112 unique tab graphics in selected and unselected states and all standard sizes. If an additional size is needed, developers can produce 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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