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Producing Tab and Menu Icons for Android Apps
When developing Android apps or designing graphics for Android apps, it is essential to conform to srict guidelines. Re-using images made for other systems, especially desktop-based, is generally not a good idea. Foreign icons will look out of place at best, or will make your Android apps hardly recognizable at worst.Producing Standard Tab and Menu Icons for Android Description: When designing Android apps or drawing graphics for Android apps, one must follow srict guidelines. Re-using images designed for different 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. Body: There are precise guidelines published 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 interface. Tab icons should be supplied in two distinct states: unselected and selected. It is required that tab icons are drawn as simple, flat shapes as opposed to graphics drawn in 3D or isometric projection.
Android OS and Android apps are used on a multitude of hardware platforms employing a wide range of hardware. In reference to icon images, those devices can have different display sizes, screen resolutions, pixel density and dimensions. To accommodate the variety of displays, Android developers must 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 including 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 drawn in the "options" menu, and are displayed to the user when they press the Menu button. Similar to tab icons, menu icons are specified as flat, grayscale images. Just as tab icons, developers cannot use 3D or isometric projections.
Screen resolutions for menu icons are described in a slightly more comprehensive way compared to tab icons. Instead of two sizes 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 dimensions should be smaller than for icons shaped otherwise. The reason for having two different size limits 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 boundaries respectively.
Instead of drawing your own images conforming to these guidelines, Android developers have an option of getting ready-made images from professional designers. For example, Android Tab Icons by Aha-Soft offer 112 unique tab images in both states and all three standard resolutions. If an additional size is needed, developers can render graphics at any size 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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