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Producing Tab and Menu Icons for Android Apps
When developing Android apps or designing graphics for mobile apps, one must conform to certain guidelines. Using icons made for other systems, especially desktop-based, is generally not a good idea. Foreign graphics will look weird at best, or will make your Android apps appear hardly recognizable at worst.Producing Standard Tab and Menu Icons for Android Description: When developing Android apps or designing graphics for mobile apps, it is essential to follow srict guidelines. Using graphics designed for other operating systems, especially desktop-based, is generally not a good idea. Foreign graphics will look weird at best, or will make your Android apps appear hardly recognizable at worst. Body: There exist strict guidelines published in reference to Android icons. Different design guidelines are available for tab icons and menu icons.
Tab icons are drawn in individual tabs in tabbed UI. Tab icons must be provided in two different states: selected and unselected. It is required that tab icons are drawn 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 hardware platforms employing a wide range of hardware. In connection to icon graphics, those devices can have different display sizes, screen resolutions, pixel density and dimensions. To accommodate the variety of screens, Android developers must supply all tab icons used in their apps in at least three resolutions to be displayed on low, medium, and high density screens. Resolution-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 supplying all three standard sizes, developers can ensure that their apps will display properly on a wide range of devices 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, grayscale images. Just as tab icons, developers should not use 3D or isometric projections.
Screen sizes for menu icons are described in a slightly more complex way compared 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 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 specifying two different sizes is to establish a consistent visual size across the two icon types.
The outer dimensions for ldpi, mdpi and hdpi 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, mdpi icons should fit 30x30 and 32x32 pixel boxes, while high-definition images should fit into 44x44 and 48x48 pixel boxes respectively.
Instead of drawing your own images conforming to 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 selected and unselected states and all 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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