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Designing Standard Tab and Menu Icons for Android
When designing mobile apps or drawing graphics for mobile apps, one must follow srict guidelines. Using graphics made for different operating systems, especially desktop-based, is generally not a good idea. Foreign graphics 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 designing mobile apps or designing graphics for Android apps, one must conform to certain guidelines. Using graphics made for other 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 appear hardly recognizable at worst. Body: There exist strict guidelines published in reference to Android icons. Different design guidelines are published for tab icons and menu images.
Tab icons are drawn in individual tabs in tabbed interface. Tab icons must be provided in two different states: selected and unselected. It is recommended that tab icons are created as simple, flat shapes as opposed to images shown in 3D or isometric projection.
Android OS and Android apps can run on a wide range of different platforms using a wide range of hardware. In connection to icon images, those devices can have different screen sizes, screen resolutions, pixel density and dimensions. 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 drawn 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, designers can ensure that their apps will be shown properly on a variety 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. Like tab icons, developers cannot use 3D or isometric projections.
Pixel resolutions for menu icons are described in a slightly more complex way as opposed to to tab icons. Instead of two sizes defined for tab graphics (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 size should be smaller than for icons shaped otherwise. The reason for specifying two different size limits is to establish a consistent visual weight 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 is 22x22 pixels, while non-square icons should fit into a boundary box sized 24x24 pixels. Similarly, mdpi icons should fit 30x30 and 32x32 pixel boxes, 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 ordering stock images from professional designers. For example, Android Tab Icons by Aha-Soft include 112 unique tab graphics in both states and all standard resolutions. If an additional size is needed, 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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