mipmap folders for diffrent DPIs, No more diffrent DPIs drawable folders. 4个不同分辨率的mipmap文件夹，与不同DPI的drawable文件夹没啥区别。 Should I put all my resources in the mipmap folders, or just the app icon? 我应该把所有资源都放到mipmap文件夹么？或者只放应用的图标？
答案：The mipmap folders are for placing your app icons in only. Any other drawable assets you use should be placed in the relevant drawable folders as before.
mipmap文件夹只放应用图标。其他需要使用的drawable资源象之前一样放到对应的drawable文件夹。
https://stackoverflow.com/questions/28065267/mipmap-vs-drawable-folders