一直遇到這樣的問題
Unable to resolve dependency for ':app@debug/compileClasspath': Could not download rxjava.jar (io.reactivex.rxjava2:rxjava:2.1.16)
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Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not download rxjava.jar (io.reactivex.rxjava2:rxjava:2.1.16)
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Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not download rxjava.jar (io.reactivex.rxjava2:rxjava:2.1.16)
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Unable to resolve dependency for ':app@release/compileClasspath': Could not download rxjava.jar (io.reactivex.rxjava2:rxjava:2.1.16)
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Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not download rxjava.jar (io.reactivex.rxjava2:rxjava:2.1.16)
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解決方法兩個字 ：翻牆
可能有些朋友開了還是不行，那就把PAC模式改成全局模式