Я новый пользователь студии android. Сначала я столкнулся с такими проблемами, как отключение кнопки запуска и отображение XML.
Когда я пытался решить эти проблемы, я сталкиваюсь с кучей кодов ошибок.
A problem occurred configuring root project 'Myfirstapp'.
> Could not resolve all artifacts for configuration ':classpath'.
> Could not download protobuf-java.jar (com.google.protobuf:protobuf-java:3.4.0): No cached version available for offline mode
> Could not download bcpkix-jdk15on.jar (org.bouncycastle:bcpkix-jdk15on:1.56): No cached version available for offline mode
> Could not download bcprov-jdk15on.jar (org.bouncycastle:bcprov-jdk15on:1.56): No cached version available for offline mode
> Could not download fastutil.jar (it.unimi.dsi:fastutil:7.2.0): No cached version available for offline mode
> Could not download jimfs.jar (com.google.jimfs:jimfs:1.1): No cached version available for offline mode
> Could not download guava.jar (com.google.guava:guava:27.1-jre): No cached version available for offline mode
> Could not download httpclient.jar (org.apache.httpcomponents:httpclient:4.5.6): No cached version available for offline mode
> Could not download httpcore.jar (org.apache.httpcomponents:httpcore:4.4.10): No cached version available for offline mode
> Could not download kotlin-reflect.jar (org.jetbrains.kotlin:kotlin-reflect:1.3.71): No cached version available for offline mode
> Could not download antlr4.jar (org.antlr:antlr4:4.5.3): No cached version available for offline mode
> Could not download juniversalchardet.jar (com.googlecode.juniversalchardet:juniversalchardet:1.0.3): No cached version available for offline mode
> Could not download gson.jar (com.google.code.gson:gson:2.8.5): No cached version available for offline mode
> Could not download kotlin-stdlib.jar (org.jetbrains.kotlin:kotlin-stdlib:1.3.71): No cached version available for offline mode
> Could not download proguard-base.jar (net.sf.proguard:proguard-base:6.0.3): No cached version available for offline mode
> Could not download jdom2.jar (org.jdom:jdom2:2.0.6): No cached version available for offline mode
> Could not download commons-compress.jar (org.apache.commons:commons-compress:1.12): No cached version available for offline mode
> Could not download trove4j.jar (org.jetbrains.trove4j:trove4j:20160824): No cached version available for offline mode
> Could not download commons-codec.jar (commons-codec:commons-codec:1.10): No cached version available for offline mode
> Could not download jaxb-runtime.jar (org.glassfish.jaxb:jaxb-runtime:2.3.1): No cached version available for offline mode
> Could not download FastInfoset.jar (com.sun.xml.fastinfoset:FastInfoset:1.2.15): No cached version available for offline mode
Вот скриншот ошибок, с которыми я сталкиваюсь: