屏幕物理尺寸單位:英寸 1英寸 ~2.54cm
常見的有5.0 5.1 5.2 5.5 5.7 5.9 6.0等

1.屏幕分辨率 = 縱向橫向像素 例如:19201080
??? 1px = 1個像素點
2.屏幕像素密度 dpi(每英寸上的像素點數(shù))

?????????????????px??????????????dpi????????icon
ldpi ???????320x240???????120??????36x36????????1dp = 0.75px
mdpi ?????480x320???????160??????48x48????????1dp = 1px
hdpi???????800x480???????240??????72x72????????1dp = 1.5px
xhdpi?????1280x720?????320??????96x96?????????1dp = 2px
xxhdpi???1920x1080???480????144x144???????1dp = 3px
xxxhdpi??2560x1440??640????192x192???????1dp = 4px

px = density x dp
density = dpi /160
px = dp x (dpi / 160)

項目中用的一個大神通過今日頭條總結(jié)的屏幕適配方案,暫時沒出什么問題.
http://www.itdecent.cn/p/55e0fca23b4f

我只是個小菜鳥,把自己容易忘的東西記錄下來而已[]_(￣▽￣)*