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Mastering Android Studio 3 by Kyle Mew

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Layered icons

The foreground layer is where we apply our imagery. This can be our own artwork, in the case of a launcher icon, or clip art/text, if we are creating action icons. The wizard automatically generates an icon for each possible usage, including a Play Store icon, which involves creating an entirely new asset. The Show Safe Zone feature is, without doubt, the most useful of the preview features, as it displays a bounding circle that our asset should not extend beyond if our icon is to display correctly on all devices and platforms. The Resize: control allows us to quickly ensure that none of our icons extend beyond this zone.

Selecting Trim: as a scaling option will remove any excess pixels before creating the finished icon, meaning ...

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