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 Billboard Icon |
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Making Standard Tab and Menu Icons for Android
When developing Android apps or drawing graphics for mobile apps, one must conform to srict guidelines. Re-using images designed for different systems, especially desktop-based, is not a good idea. Foreign icons will look weird at best, or will make your Android apps hardly recognizable at worst.Making Tab and Menu Icons for Android Apps Description: When designing mobile apps or designing graphics for mobile apps, it is essential to follow srict guidelines. Using icons designed for different systems, especially desktop-based, is not a good idea. Foreign images will look weird at best, or will render your Android apps appear hardly recognizable at worst. Body: There exist precise guidelines available for designing standard-compliant Android icons. Different design guidelines are published for tab icons and menu graphics.
Tab icons are drawn in individual tabs in tabbed UI. Tab icons must be provided in two different states: unselected and selected. It is required that tab icons are designed as simple, flat shapes as opposed to images 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 graphics, those platforms can have different display sizes, screen resolutions, pixel density and dimensions. To accommodate the variety of displays, Android developers must provide all tab icons used in their apps in at least three resolutions to be shown on low, medium, and high density displays. Resolution-wise, the outer boundaries for the three resolutions are defined as 24x24, 32x32, and 48x48 pixels. The size of the shape itself should not exceed 22x22, 28x28, and 42x42 pixels respectively. By including all three standard resolutions, designers can ensure that their apps will display properly on a variety of devices running the Android OS.
Menu icons are used 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, greyscale images. Like tab icons, developers cannot use 3D or isometric projections.
Pixel resolutions for menu icons are described in a slightly more comprehensive way as opposed to 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 whether they are square-shaped or not. 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 should be 22x22 pixels, while non-square icons should fit into a boundary box sized 24x24 dots. Similarly, mdpi 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 ordering stock images from professional designers. As an example, Android Tab Icons by Aha-Soft include 112 unique tab graphics in both states and all three standard resolutions. Should additional resolutions be required, developers can render graphics at any size 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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