node.js - react-native run-android Could not resolve all dependencies for configuration ':classpath' -

-

i learing react-native,i got error when used command 'react-native run-android' on windows 10

failure: build failed exception.  * went wrong: problem occurred configuring root project 'demo'. > not resolve dependencies configuration ':classpath'.    > not download gradle-core.jar (com.android.tools.build:gradle-core:1.3.1)       > not resource 'https://jcenter.bintray.com/com/android/tools/build/gradle-core/1.3.1/gradle-core-1.3.1.jar'.          > not 'https://jcenter.bintray.com/com/android/tools/build/gradle-core/1.3.1/gradle-core-1.3.1.jar'.             > peer not authenticated  * try: run --stacktrace option stack trace. run --info or --debug option more log output.

i'm tired,i'll appreciate helping me!


Comments

Post a Comment

Popular posts from this blog

Capture and play voice with Asterisk ARI -

-
there channel ari demo in wich can control channel state: ring, answer, play silence, play tone or audio-file ( https://github.com/asterisk/ari-examples/tree/master/channel-state , https://wiki.asterisk.org/wiki/display/ast/ari+and+channels%3a+manipulating+channel+state ) possible receive chunks (parts, buffers, etc.) of call voice (which created remote subscriber) or write chunks of voice, example array of bytes (not file) in audio format (alaw, ulow etc). you can use asterisk eagi interface voice data. other option use record or mixmonitor app record channel(channel have put stasis allow dialplan control ari) "write chunks of voice" can done application playback also can create own application using c/c++, compile asterisk , result want. no, can't redirect voice directly using ari.
Read more

c++ - Can not find the "fiostream.h" file -

-
i'm learning c++ now. here question: #include <fiostream.h> no matter used: #include <fiostream> #include "fiostream" #include "fiostream.h" i can not find "fiostream.h" file anywhere. where can find "fiostream.h" file? does "iostream.h" include "fiostream.h"'s functions? what's difference between "fiostream.h" , "iostream.h"? thank you~~ what's difference between "fiostream.h" , "iostream.h"? the difference “f”. neither header exists. iostream does, fiostream doesn’t (but fstream does).
Read more

java - Why database contraints in HSQLDB are only checked during a commit when using transactions in Hibernate? -

-
i spotted odd behavior in hsql, seems when using database transactions database contraints not checked during sql inserts during sql commits , when transaction rollbacked not checked @ all. i have spring integration test: @runwith(springjunit4classrunner.class) @transactionconfiguration(defaultrollback=true, transactionmanager="transactionmanager") @transactional public class integrationtest { with test creates new entity instance , calls hibernate's persist on it. it works fine, when change defaultrollback false fails: caught exception while allowing testexecutionlistener [org.springframework.test.context.transaction.transactionaltestexecutionlistener@517a2b0] process 'after' execution test: method [public void myintegrationtest.test()], instance [myintegrationtest@546e61d5], exception [null] org.springframework.dao.dataintegrityviolationexception: not execute statement; sql [n/a]; constraint [null]; nested exception org.hibernate.exception.const...
Read more