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Making Standard Tab and Menu Icons for Android Apps
When developing Android apps or drawing graphics for Android apps, one must conform to srict guidelines. Using icons made for different systems, especially desktop-based, is generally not a good idea. Foreign graphics will look weird at best, or will make your Android apps hardly recognizable at worst.Designing Tab and Menu Icons for Android Apps Description: When designing mobile apps or drawing graphics for mobile apps, it is essential to conform to certain guidelines. Using icons designed for different operating systems, especially desktop-based, is not a good idea. Foreign graphics will look weird at best, or will render your Android apps appear hardly recognizable at worst. Body: There exist precise guidelines available in reference to Android icons. Different design guidelines are available for tab icons and menu images.
Tab icons represent individual tabs in tabbed UI. Tab icons must be supplied in two different states: unselected and selected. It is required that tab icons are designed 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 different platforms using a wide range of hardware. In connection to icon images, those devices can have different display sizes, display resolutions, pixel density and dimensions. To accommodate the variety of screens, Android developers should provide all tab icons used in their apps in at least three resolutions to be drawn on low, medium, and high density screens. 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 providing 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 displayed to the user 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.
Screen sizes for menu icons are defined in a slightly more comprehensive way as opposed to to tab icons. Instead of just two sizes defined for tab icons (inner shape and boundary box), the inner shape of menu icons can be smaller or larger 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 size across the two icon types.
The outer dimensions for low, medium, and high resolution 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 pixels. 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 icons conforming to these guidelines, Android developers have an option of getting ready-made graphics from professional designers. For example, Android Tab Icons by Aha-Soft offer 112 unique tab icons in both states and all standard resolutions. Should additional resolutions be required, developers can produce icons at any size by accessing 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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