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Designing Standard Tab and Menu Icons for Android Apps
When developing mobile apps or drawing graphics for Android apps, it is essential to conform to srict guidelines. Using graphics designed for different systems, especially desktop-based, is not a good idea. Foreign images will look weird at best, or will make your Android apps appear hardly recognizable at worst.Producing Standard Tab and Menu Icons for Android Description: When designing mobile apps or drawing graphics for Android apps, it is essential to follow certain guidelines. Using icons designed for different 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 hardly recognizable at worst. Body: There exist precise guidelines available for designing standard-compliant Android icons. Different design guidelines are available for tab icons and menu graphics.
Tab icons represent 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 graphics shown in 3D or isometric projection.
Android OS and Android apps can run on a multitude of hardware platforms employing a wide range of hardware. In reference to icon graphics, those devices can have different display sizes, display resolutions, pixel dimensions and density. To accommodate the wide range of displays, Android developers must provide all tab icons used in their apps in at least three resolutions to be displayed on low, medium, and high density screens. 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 sizes, developers can ensure that their apps will display properly on a wide range of platforms running the Android OS.
Menu icons are drawn in the "options" menu, and are displayed to users when they press the Menu button. Similar to tab icons, menu icons should be 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 sizes defined 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 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 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 boxes respectively.
Instead of drawing your own graphics matching these guidelines, Android developers have an option of obtaining ready-made icons from professional designers. As an example, Android Tab Icons by Aha-Soft include 112 unique tab icons in both 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 previewed and downloaded at http://www.aha-soft.com/stock-icons/android-tab-icons.htm.
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