1.retrace error log
Proguard wants each “at” on a separate line, and only with white space before it. If it sees anything but white space before the at, it will not unobfuscate it.
每行以at 开头，前面只能有空格，不能有其他。
/Users/samzhao/Documents/adt-bundle-mac-x86_64-20131030/sdk/tools/proguard/bin/retrace.sh -verbose mapping.txt 1.txt
2.让gitignore 起作用
Even if you haven’t tracked the files so far, git seems to be able to “know” about them even after you add them to .gitignore.
A quick fix that I’ve used was to run the following commands from the top folder of your git repo:
git rm -r --cached .
Followed by:
git add .
and
git commit -m "fixed untracked files"
3.让git不跟踪文件的变化
git update-index --assume-unchanged <file>
4.git 出现 fatal: The remote end hung up unexpectedly
git config http.postBuffer 524288000