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Icon sizes: 256x256, 128x128, 48x48, 32x32, 24x24, 20x20, 16x16, 512x512 File formats: ICO, GIF, PNG, BMP Making Tab and Menu Icons for AndroidWhen designing mobile apps or drawing graphics for mobile apps, one must conform to srict guidelines. Re-using icons designed for other operating 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.Producing Standard Tab and Menu Icons for Android Apps Description: When developing Android apps or drawing graphics for mobile apps, it is essential to conform to srict guidelines. Re-using images designed for other 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 are strict guidelines published 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 should be provided in two distinct states: unselected and selected. It is recommended that tab icons are designed as simple, flat shapes as opposed to graphics drawn in 3D or isometric projection. Android OS and Android apps are used on a multitude of different platforms using a wide range of hardware. In reference to icon images, those devices 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 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, developers can ensure that their apps will display properly on a variety 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. Just as tab icons, developers should not use 3D or isometric projections. Pixel sizes for menu icons are defined in a slightly more complex 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 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 having two different sizes is to establish a consistent visual size 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 pixels. Similarly, medium-definition 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 images matching these guidelines, Android developers have an option of ordering stock images from professional designers. For example, Android Tab Icons by Aha-Soft offer 112 unique tab images in both states and all three standard sizes. Should additional resolutions be required, developers can render images 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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