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Apps Please, test my ruler

Discussion in 'Android Development' started by dimiter, Sep 6, 2011.

  1. dimiter

    dimiter Newbie
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    Jul 27, 2011
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    Moscow
    I have develop the ruler app. But i saw, what it work incorrect: real QVGA screen size is 47 mm, it show about 50 mm.
    But: QVGA dpi is 120, resolution is 240. Screen size should be 2 inch = 50.8 mm.
    So i divide dpi from abstract number for accuracy:
    pix_per_inch=StraightEdgeActivity.dpi/0.943;
    It's correct in QWGA (mistake is < 0.1 mm in screen size). But, maybe, in other screens it's incorrect. Please, test it, and send you mistakes.
    Download here: Ruler app ?????????? ?????????????
     

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