android 自动调整屏幕分辨率.pdf

1 12 andorid dip dip px dip density 160 density 160 android DisplayMetrics density 0 75 1 1 5 dip px drawable hdpi drawable mdpi drawable ldpi density dip dip dip 240 x320 density 120 320dipx426 6dip 320 x480 density 160 320dipx480dip 480 x800 density 240 320dipx533 3dip 480 x854 density 240 320dipx569 33dip 2 12 web android layout Android 480 x320 640 x360 800 x480 App res layout layout 640 x360 layout 800 x480 layout R java layout hdpi mdpi ldpi drawable 2 1 drawable mdpi drawable ldpi drawable hdpi drawable hdpi drawable mdpi drawable ldpi 1 drawable hdpi WVGA 480 x800 FWVGA 480 x854 2 drawable mdpi HVGA 320 x480 3 drawable ldpi QVGA 240 x320 3 12 1 Screen size 2 8 3 2 3 5 3 7 milestone 3 7 Aspect Ratio long nolong Milestone 16 9 long Resolution Milestone 854 480 DPI dot per inch 120dpi 160dpi QVGA 320 240 2 1 5 dpi 160 UI Density resolution Screen size Density independent pixel dip dip dip pixel dpi 160 px dp dpi 160 2 DPI WVGA 800 480 3 7 DPI 1 4 12 1 Diagonal pixel DPI 933 3 7 252 3 3 1 DPI 3 2 5 12 2 3 2 1 Low density 120 ldpi Medium density 160 mdpi High density 240 hdpi Small screen QVGA 240 x320 Norm al screen WQVGA400 240 x400 WQVGA432 240 x432 HVGA 320 x480 WVGA800 480 x800 WVGA854 480 x854 Large screen WVGA800 480 x800 WVGA854 480 x854 1 3 3 3 800 480 854 480 6 12 3 3 4 5 1 1 5 4 UI 3 Android 3 UI 3 2 Icon Type Standard Asset Sizes in Pixels for Generalized Screen Densities Low density screen ldpi Medium density screen mdpi High density screen hdpi Launc her 36 x 36 px 48 x 48 px 72 x 72 px 7 12 Menu 36 x 36 px 48 x 48 px 72 x 72 px Statu s Bar 24 x 24 px 32 x 32 px 48 x 48 px Tab 24 x 24 px 32 x 32 px 48 x 48 px Dialo g 24 x 24 px 32 x 32 px 48 x 48 px List View 24 x 24 px 32 x 32 px 48 x 48 px 2 5 1 5 layout xml windos title bar layout small 3 layout normal 4 5 layout large 4 7 layout xlarge 7 10 2 dpi 5 drawable drawalbe ldpi drawable mdpi drawable hdpi drawable xhdpi Android hdpi mdpi ldpi Android Android os Android 1 6 Google 8 12 1 6 drawable hdpi drawable mdpi drawable ldpi drawable hdpi himi png drawable hdpi drawable himi png drawable mdpi drawable dpi 3 1 drawable hdpi drawable mdpi drawable ldpi drawable 2 assets assets id Android Android os 1 6 android Android Android os AndroidMainFest OK android 1 5SDK OK 9 12 1 Screen size Android 3 2 Aspect ratio 3 Resolution 4 Density 5 Density independent pixel Adnroid1 6 SDK AndroidManifest xml Android 3 1 2 medium 3 medium 160 1 android anyDensity false 2 android anyDensity false 3 android anyDensity false 10 12 1 normal normal medium 2 larger normal medium DIP DIP 1 DIP 2 Layout DIP 3 android anyDensity false 4 DIP SP 1 wrap content fill parent dip in XML layout files 2 AbsoluteLayout 3 dip px scroll 16px 1 160dip 16px 160dpi 1 10th of an inch or 2 5 mm 2 240dip 16px 240dpi 1 15th of an inch or 1 7 mm The gesture threshold expressed in dip private static final float GESTURE THRESHOLD DIP 16 0f Convert the dips to pixels final float scale getContext getResources getDisplayMetrics density mGestureThreshold int GESTURE THRESHOLD DIP scale 4 9 1 240 x240 160 x160 2 API 11 12 3 res drawable nodpi 4 BitmapFactory Options 9 5 CPU RAM or ROM a android density Android 1 6 density API Level 4 b density density 240 240 c 800 x480 px d density density 480dip 800dip WVGA density 120 240px 400px density 160 320px 533px density 240 480px 800px a AndroidManifest xml b android 2 0 res xxx hdpi density 240 res xxx mdpi density 160 res xxx ldpi density 120 12 12 res xxx xxx mdpi desity density density c layout xml i dp dip dx Density ind