Move drawables to "drawable-nodpi" instead of "drawable" to get correct bitmap sizes

[ursusursus]

Hi, in demo your bitmaps in memory are astronomically huge as they are in "drawable" folder, which is "drawable-mdpi" and if you run it on modern xxxhdpi phone, you will get multiplier * 4 (i think) of each dimension, there fore each bitmap is 16times bigger in memory (124mb+ bitmaps)

[eschao]

I will think about it, thanks!

[Huskyyy]

经过测试，在 480dpi 的手机（屏幕尺寸 1080x1920，华为，api 24）上，解析出来的 bitmap 的大小是 3240x5760，将 1080p 的图片放入 drawable-xxhdpi 目录下则为正常大小 1080x1920。可以考虑将图片放入不同的 drawable 目录。