‘:app:processDebugResources‘.java.io.IOException:Couldnotdeletefolder..\android\app\build\generated\source\r\debug\com\facebook\drawee
https://stackoverflow.com/questions/35158205/react-native-run-android-fail-on-appprocessdebugresources
Run this command to clean project:
cd android&&gradlew clean
After, run the following command to run project again:
cd..&&react-nativerun-android
原文：http://www.cnblogs.com/caicai2480/p/7198001.html