在项目中使用MWPhotoBrowser未导入ALAssetsLibrary类库时会导致编译时出现异常:
"_OBJC_CLASS_$_ALAssetsLibrary", referenced from:和clang: error: linker command failed with exit code 1 (use -v to see invocation)
在项目的TARGET的Build Phases中导入AssetsLibrary.framework即可编译成功。