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Designing Tab and Menu Icons for Android
When developing mobile apps or designing graphics for mobile apps, it is essential to conform to srict guidelines. Using icons designed for other operating systems, especially desktop-based, is not a good idea. Foreign icons will look weird at best, or will make your Android apps hardly recognizable at worst.Making Standard Tab and Menu Icons for Android Apps Description: When developing Android apps or designing graphics for Android apps, one must follow srict guidelines. Using icons made for different systems, especially desktop-based, is not a good idea. Foreign graphics will look out of place at best, or will render your Android apps appear hardly recognizable at worst. Body: There are strict guidelines available in reference to 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 must be supplied in two different states: selected and unselected. It is required that tab icons are created as simple, flat shapes as opposed to graphics drawn in 3D or isometric projection.
Android OS and Android apps can run on a variety of hardware platforms using a wide range of hardware. In connection to icon images, those platforms can have different screen sizes, screen resolutions, pixel dimensions and density. To accommodate the wide range of screens, Android developers should supply 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 resolutions 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, developers can ensure that their apps will display properly on a wide range of platforms 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 should be flat, grayscale images. Just as tab icons, developers should not use 3D or isometric projections.
Screen resolutions for menu icons are defined in a slightly more comprehensive way as opposed to to tab icons. Instead of just 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 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 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 boundaries respectively.
Instead of drawing your own icons conforming to these guidelines, Android developers have an option of getting stock graphics from professional designers. As an example, Android Tab Icons by Aha-Soft offer 112 unique tab icons in selected and unselected states and all three standard sizes. 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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