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Producing Tab and Menu Icons for Android Apps
When developing Android apps or drawing graphics for Android apps, one must follow srict guidelines. Using icons designed for other systems, especially desktop-based, is not a good idea. Foreign images will look out of place at best, or will render your Android apps hardly recognizable at worst.Designing Tab and Menu Icons for Android Description: When developing mobile apps or drawing graphics for mobile apps, one must follow srict guidelines. Using images designed for other systems, especially desktop-based, is generally not a good idea. Foreign images will look weird at best, or will make your Android apps appear hardly recognizable at worst. Body: There are precise guidelines published in reference to Android icons. Different design guidelines are available for tab icons and menu graphics.
Tab icons are drawn in individual tabs in tabbed UI. Tab icons should be provided in two distinct states: unselected and selected. 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 variety of hardware platforms employing a wide range of hardware. In connection to icon graphics, those devices can have different screen sizes, screen resolutions, pixel density and dimensions. To accommodate the wide range of screens, Android developers must provide 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 sizes, designers can ensure that their apps will display properly on a variety 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 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 described 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 resolution 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 low, medium, and high resolution 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 pixels. Similarly, mdpi icons should fit 30x30 and 32x32 pixel boundaries, while high-definition images should fit into 44x44 and 48x48 pixel rectangles respectively.
Instead of designing your own graphics matching these guidelines, Android developers have an option of obtaining ready-made images from professional designers. As an 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 render icons 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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