When a real machine is debugged, the cmd command executes react-native run-android when the com.android.ddmlib.InstallException:Unable to upload some APKs exception occurs, Then there is a solution that tries to view or debug and general logs by outputting the error stack, and no other errors are found.
Behind the discovery ADB devices appeared two devices one is a real machine, the other is emulator-5594 host, because can not appear two or more devices, immediately kill ADB, restart command: adb kill-server adb start-server, Pretty happy to open the debugging React-native run-android, or the error (egg pain).
At this time to StackOverflow a search error found that the default gradle1.3.1 changed to 1.2.3 package run successfully
Reference: Http://stackoverflow.com/questions/32932874/com-android-ddmlib-installexception-unable-to-upload-some-apks
Attach the result of the operation:
Com.android.ddmlib.InstallException:Unable to upload some APKs?