http://stackoverflow.com/questions/16795492/gson-error-jellybean
Caused by: java.lang.StackOverflowError\n\tat com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:375)
...
The solution is to downgrade the GSON version to 1.7 and the problem is solved.
But a new problem comes out, gson cannot be parsed after obfuscation and compilation.
After the test, it was found that the obfuscated compilation can also be used normally.