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Producing Tab and Menu Icons for Android Apps
When developing mobile apps or drawing graphics for mobile apps, one must follow certain 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 render your Android apps appear hardly recognizable at worst.Producing Tab and Menu Icons for Android Description: When designing Android apps or drawing graphics for mobile apps, one must follow srict guidelines. Re-using icons designed 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. Body: There are strict guidelines available for designing standard-compliant Android icons. Different design guidelines are published for tab icons and menu icons.
Tab icons represent individual tabs in tabbed interface. Tab icons must be supplied in two different states: unselected and selected. It is recommended that tab icons are created as simple, flat shapes as opposed to graphics drawn in 3D or isometric projection.
Android OS and Android apps are used on a wide range of different platforms using a wide range of hardware. In reference to icon images, those platforms can have different screen sizes, display resolutions, pixel density and dimensions. 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 shown on low, medium, and high density screens. Resolution-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 providing all three standard resolutions, designers can ensure that their apps will display properly on a wide range of devices running the Android OS.
Menu icons are displayed in the "options" menu, and are displayed 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.
Pixel sizes for menu icons are defined in a slightly more comprehensive way compared to tab icons. Instead of just two sizes described for tab icons (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 with different shapes. The reason for having two different sizes 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 should be 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 designing your own icons conforming to these guidelines, Android developers have an option of obtaining ready-made images from professional designers. For example, Android Tab Icons by Aha-Soft offer 112 unique tab images in both states and all 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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