【发布时间】：2018-08-17 18:04:28
【问题描述】：
我在 expo 中使用 react native，操作系统：Elementary OS，模拟器：Android Studio 模拟器。
尝试在模拟器中打开应用时出现以下错误
12:58:16: Starting Android...
Error running adb: Error running app. Error: Activity not started, unable to resolve Intent { act=android.intent.action.VIEW dat=exp://192.168.0.101:19000 flg=0x10000000 }
› Press a to open Android device or emulator, or i to open iOS emulator.
› Press q to display QR code.
› Press r to restart packager, or R to restart packager and clear cache.
› Press d to toggle development mode. (current mode: development)
(node:15266) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'length' of null
at /xdl/src/Android.js:90:18
at Generator.next (<anonymous>)
at step (/home/afzal/AFZAL/Cloud_Drive/Development/React Native/react-native-boilerplate-redux-flow-master/node_modules/xdl/build/Android.js:475:191)
at /home/afzal/AFZAL/Cloud_Drive/Development/React Native/react-native-boilerplate-redux-flow-master/node_modules/xdl/build/Android.js:475:361
at <anonymous>
at process._tickCallback (internal/process/next_tick.js:160:7)
(node:15266) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
【问题讨论】：
标签： android react-native expo