编译android运行时报错：
JS Exception: cc.sys is undefined, file: assets/main.js, lineno: 3
Stack: @assets/main.js
1
@assets/main.js:1:2
编译android运行时报错：
JS Exception: cc.sys is undefined, file: assets/main.js, lineno: 3
Stack: @assets/main.js1
@assets/main.js:1:2