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 Notebook 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. Using images designed for different systems, especially desktop-based, is not a good idea. Foreign images will look out of place at best, or will render your Android apps hardly recognizable at worst.Making Standard Tab and Menu Icons for Android Apps Description: When developing Android apps or drawing graphics for Android apps, it is essential to conform to srict guidelines. Using graphics designed for different operating 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 hardly recognizable at worst. Body: There are precise guidelines available for designing standard-compliant Android icons. Different design guidelines are available for tab icons and menu icons.
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 designed as simple, flat shapes as opposed to icons shown in 3D or isometric projection.
Android OS and Android apps can run on a variety of hardware platforms using a wide range of hardware. In reference to icon images, those platforms can have different screen sizes, screen resolutions, pixel dimensions and density. To accommodate the wide range of screens, 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 screens. Resolution-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 supplying all three standard resolutions, developers can ensure that their apps will be shown properly on a wide range of platforms running the Android OS.
Menu icons are used in the "options" menu, and are displayed to the user when they press the Menu button. Similar to tab icons, menu icons are specified as flat, grayscale images. Just as tab icons, developers cannot use 3D or isometric projections.
Pixel sizes for menu icons are described in a slightly more complex way as opposed to to tab icons. Instead of just two resolutions defined 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 specifying two different size limits 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 boxes respectively.
Instead of drawing your own graphics matching these guidelines, Android developers have an option of getting stock icons from professional designers. For example, Android Tab Icons by Aha-Soft include 112 unique tab images in both states and all standard sizes. Should additional resolutions be required, developers can render images 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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