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Making Tab and Menu Icons for Android
When designing mobile apps or drawing graphics for mobile apps, it is essential to conform to certain guidelines. Using graphics made for different operating systems, especially desktop-based, is generally not a good idea. Foreign icons will look weird at best, or will render your Android apps hardly recognizable at worst.Producing Tab and Menu Icons for Android Apps Description: When developing Android apps or drawing graphics for Android apps, one must conform to srict guidelines. Using icons designed for other operating systems, especially desktop-based, is not a good idea. Foreign icons will look out of place at best, or will make 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 graphics.
Tab icons are drawn in individual tabs in tabbed interface. Tab icons should be supplied in two distinct states: selected and unselected. It is recommended that tab icons are designed as simple, flat shapes as opposed to graphics shown in 3D or isometric projection.
Android OS and Android apps are used on a variety of different platforms using a wide range of hardware. In connection to icon images, those platforms can have different screen sizes, screen resolutions, pixel density and dimensions. To accommodate the variety of displays, Android developers should supply all tab icons used in their apps in at least three resolutions to be shown on low, medium, and high density screens. 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 providing all three standard resolutions, designers can ensure that their apps will be shown properly on a variety of devices running the Android OS.
Menu icons are used in the "options" menu, and are displayed to users when they press the Menu button. Similar to tab icons, menu icons should be flat, greyscale images. Like tab icons, developers cannot use 3D or isometric projections.
Screen sizes for menu icons are described in a slightly more complex way as opposed to to tab icons. Instead of two resolutions defined for tab icons (inner shape and boundary box), the inner shape of menu icons can be smaller or bigger depending on whether they are square-shaped or not. If a menu icon is square-shaped, its resolution should be smaller than for icons with different shapes. The reason for specifying two different sizes is to establish a consistent visual weight across the two icon types.
The outer dimensions for ldpi, mdpi and hdpi icons are described 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 boxes respectively.
Instead of drawing your own icons matching these guidelines, Android developers have an option of ordering ready-made images from professional designers. As an example, Android Tab Icons by Aha-Soft include 112 unique tab icons in selected and unselected states and all three standard resolutions. Should additional resolutions be required, developers can produce graphics at any resolution 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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