该方法是shell 和makefile组合使用
wallpapers := $(shell ls packages/apps/hyst_apps/NewBingoLauncher_C/default_wallpaper_config/)
PRODUCT_COPY_FILES += $(foreach wallpaper,$(wallpapers), $(if $(findstring customized_config,$(wallpaper)), \ packages/apps/hyst_apps/NewBingoLauncher_C/default_wallpaper_config/$(wallpaper):system/$(wallpaper), \ packages/apps/hyst_apps/NewBingoLauncher_C/default_wallpaper_config/$(wallpaper):system/wallpaper/$(wallpaper)))第一句是用shell 列出文件夹packages/apps/hyst_apps/NewBingoLauncher_C/default_wallpaper_config/下所有文件存放到wallpapers中
第二句是makefile foreach函数循环展开wallpapers并根据需要组合复制路径
，自己打败自己的远远多于比别人打败的。
