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Making Tab and Menu Icons for Android Apps
When developing mobile apps or designing graphics for Android apps, one must follow srict guidelines. Re-using images designed for different systems, especially desktop-based, is generally not a good idea. Foreign images will look out of place at best, or will render your Android apps appear hardly recognizable at worst.Producing Tab and Menu Icons for Android Apps Description: When developing Android apps or designing graphics for mobile apps, one must follow srict guidelines. Re-using images made for different operating systems, especially desktop-based, is not a good idea. Foreign images will look weird at best, or will render your Android apps hardly recognizable at worst. Body: There exist precise guidelines published for designing standard-compliant Android icons. Different design guidelines are published for tab icons and menu images.
Tab icons represent individual tabs in tabbed interface. Tab icons must be provided in two distinct states: unselected and selected. It is recommended that tab icons are designed as simple, flat shapes as opposed to images shown in 3D or isometric projection.
Android OS and Android apps can run on a variety of different platforms employing a wide range of hardware. In connection to icon graphics, those platforms can have different screen sizes, screen resolutions, pixel dimensions and density. 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 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 supplying all three standard sizes, designers can ensure that their apps will be shown properly on a wide range 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 should be flat, grayscale images. Like tab icons, developers should not use 3D or isometric projections.
Pixel resolutions for menu icons are described in a slightly more comprehensive way compared to tab icons. Instead of just two resolutions defined for tab graphics (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 size should be smaller than for icons with different shapes. The reason for specifying 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 should be 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 boxes, while high-definition images should fit into 44x44 and 48x48 pixel boundaries respectively.
Instead of designing your own images matching these guidelines, Android developers have an option of getting ready-made icons from professional designers. As an example, Android Tab Icons by Aha-Soft offer 112 unique tab images in selected and unselected states and all standard resolutions. If an additional size is needed, developers can render images at any size by opening scalable vector sources. Android Tab Icons can be viewed and downloaded at http://www.aha-soft.com/stock-icons/android-tab-icons.htm.
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