Android Studio Drawable和Mipmap文件夹的区别是啥啊

我是把图片资源放到mipmap中呢？还是新建drawable-xhdip之类的文件夹放图片呢

drawable-xhdip

xhdpi hdpi dpi 带表不同的屏幕像素密度 一张图 得做几张 才能在不同屏幕像素密度下保持资料一致

新版本mipmap代替了drawable
http://segmentfault.com/q/1010000002603418

mipmap资源和drawable资源的使用一样，感觉没太大区别，只是性能有一定优化

复制过来的官方介绍：
Mipmapping for drawables
Using a mipmap as the source for your bitmap or drawable is a simple way to provide a quality image and various image scales, which can be particularly useful if you expect your image to be scaled during an animation.
Android 4.2 (API level 17) added support for mipmaps in the Bitmap class—Android swaps the mip images in your Bitmap when you've supplied a mipmap source and have enabled setHasMipMap(). Now in Android 4.3, you can enable mipmaps for a BitmapDrawable object as well, by providing a mipmap asset and setting the android:mipMap attribute in a bitmap resource file or by calling hasMipMap().