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Making Tab and Menu Icons for Android
When designing mobile apps or drawing graphics for mobile apps, it is essential to conform to certain guidelines. Using icons made for different systems, especially desktop-based, is generally not a good idea. Foreign images will look out of place at best, or will render your Android apps appear hardly recognizable at worst.Making Tab and Menu Icons for Android Description: When developing Android apps or designing graphics for Android apps, it is essential to follow certain guidelines. Re-using graphics made for different operating systems, especially desktop-based, is generally not a good idea. Foreign icons will look out of place at best, or will make your Android apps hardly recognizable at worst. Body: There are strict guidelines available for designing standard-compliant Android icons. Different design guidelines are available for tab icons and menu images.
Tab icons represent individual tabs in tabbed UI. Tab icons should be provided in two different states: unselected and selected. It is required that tab icons are drawn as simple, flat shapes as opposed to icons drawn in 3D or isometric projection.
Android OS and Android apps can run on a variety of hardware platforms employing a wide range of hardware. In reference to icon images, those devices can have different display sizes, screen resolutions, pixel density and dimensions. To accommodate the wide range 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. 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 supplying all three standard sizes, developers can ensure that their apps will display properly on a variety of devices running the Android OS.
Menu icons are drawn in the "options" menu, and are shown to the user 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 as opposed to to tab icons. Instead of two resolutions described for tab icons (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 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, medium-definition icons should fit 30x30 and 32x32 pixel boxes, while high-definition images should fit into 44x44 and 48x48 pixel rectangles respectively.
Instead of designing your own icons conforming to these guidelines, Android developers have an option of obtaining stock icons from professional designers. As an example, Android Tab Icons by Aha-Soft offer 112 unique tab images in selected and unselected states and all standard resolutions. Should additional resolutions be required, developers can produce images 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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