2019-08-15

asset的使用

1.要在yaml中配置；/xx/lll/

2.代码中要完整路径。/lll/ggg

Lost connection to device

解决方法：brew upgrade --fetch-HEAD usbmuxd

协程

Future.delayed(Duration(seconds:1), (){return onValue;}).then((onValue){ print(onValue);});