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 Heart with Shadow Icon |
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Making Tab and Menu Icons for Android
When developing Android apps or designing graphics for mobile apps, it is essential to follow certain guidelines. Re-using images designed for different systems, especially desktop-based, is generally not a good idea. Foreign icons 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 mobile apps or drawing graphics for Android apps, it is essential to follow certain guidelines. Using images designed for other operating systems, especially desktop-based, is not a good idea. Foreign graphics will look out of place at best, or will make your Android apps appear hardly recognizable at worst. Body: There exist strict guidelines published for designing standard-compliant Android icons. Different design guidelines are published for tab icons and menu images.
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 shown in 3D or isometric projection.
Android OS and Android apps can run on a multitude of hardware 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 drawn on low, medium, and high density displays. Resolution-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 resolutions, developers can ensure that their apps will be shown properly on a variety of devices running the Android OS.
Menu icons are displayed in the "options" menu, and are shown to the user when they press the Menu button. Similar to tab icons, menu icons are specified as flat, grayscale images. Like tab icons, developers should not use 3D or isometric projections.
Screen sizes for menu icons are described in a slightly more complex way compared to tab icons. Instead of just two resolutions described for tab graphics (inner shape and boundary box), the inner shape of menu icons can be smaller or bigger depending on their shape. If a menu icon is square-shaped, its size should be smaller than for icons shaped otherwise. 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 is 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 boxes, 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 getting ready-made icons 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 resolutions. If an additional size is needed, developers can produce graphics 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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