I'm currently designing images in four different dimensions (ldpi,mdpi,hdpi and xhdpi) for an Android application. i know that the different drawable folders are used dependig on the dpi of the devices' screen.
But what is the optimal dpi in photoshop to save the pngs?
Should images for ldpi saved with 120dpi, mdpi with 160dpi and so on?
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You might be confused about what PPI (pixels per inch) to set your deliverables at. Just leave them at the standard 72 PPI, and scale the images accordingly.