Android Studio Gradle project sync failed，Configure project:app 前出现红叹号

Question

Android Studio Gradle project sync failed，Configure project:app 前出现红叹号

提示为

    org.gradle.api.ProjectConfigurationException: A problem occurred configuring project ':app'
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
    at java.lang.Thread.run(Thread.java:745)
Caused by: com.android.builder.errors.EvalIssueException: Failed to install the following Android SDK packages as some licences have not been accepted.
   build-tools;28.0.2 Android SDK Build-Tools 28.0.2
To build this project, accept the SDK license agreements and install the missing components using the Android Studio SDK Manager.
Alternatively, to transfer the license agreements from one workstation to another, see http://d.android.com/r/studio-ui/export-licenses.html

Using Android SDK: D:\Android\SDK
    at com.android.build.gradle.internal.SdkHandler.initTarget(SdkHandler.java:194)
    at com.android.build.gradle.BasePlugin.ensureTargetSetup(BasePlugin.java:980)
    at com.android.build.gradle.BasePlugin.createAndroidTasks(BasePlugin.java:752)
    at com.android.build.gradle.BasePlugin.lambda$null$4(BasePlugin.java:690)
    at com.android.builder.profile.ThreadRecorder.record(ThreadRecorder.java:81)
    at com.android.build.gradle.BasePlugin.lambda$createTasks$5(BasePlugin.java:686)
    at org.gradle.internal.event.BroadcastDispatch$ActionInvocationHandler.dispatch(BroadcastDispatch.java:91)
    at org.gradle.internal.event.BroadcastDispatch$ActionInvocationHandler.dispatch(BroadcastDispatch.java:80)
    at org.gradle.internal.event.AbstractBroadcastDispatch.dispatch(AbstractBroadcastDispatch.java:42)
    at org.gradle.internal.event.BroadcastDispatch$SingletonDispatch.dispatch(BroadcastDispatch.java:230)
    at org.gradle.internal.event.BroadcastDispatch$SingletonDispatch.dispatch(BroadcastDispatch.java:149)
    at org.gradle.internal.event.AbstractBroadcastDispatch.dispatch(AbstractBroadcastDispatch.java:58)
    at org.gradle.internal.event.BroadcastDispatch$CompositeDispatch.dispatch(BroadcastDispatch.java:324)
    at org.gradle.internal.event.BroadcastDispatch$CompositeDispatch.dispatch(BroadcastDispatch.java:234)
    at org.gradle.internal.event.ListenerBroadcast.dispatch(ListenerBroadcast.java:140)
    at org.gradle.internal.event.ListenerBroadcast.dispatch(ListenerBroadcast.java:37)
    at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
    at com.sun.proxy.$Proxy27.afterEvaluate(Unknown Source)
    at org.gradle.configuration.project.LifecycleProjectEvaluator.notifyAfterEvaluate(LifecycleProjectEvaluator.java:76)
    ... 85 more

Answer 1

不知道你这个问题是否已经解决, 如果还没有解决的话:

• 这篇文章：android studio报错Error: Gradle project sync failed. Please fix your project and try again. 也许能够解决你的问题，你可以看下
• 除此之外, 这篇博客: 记录一下我安装android studio3.4的过程中曾出现的几个问题中的 Gradle project sync failed 部分也许能够解决你的问题, 你可以仔细阅读以下内容或者直接跳转源博客中阅读:
  
  Gradle project sync failed.解决办法
  参考这篇帖子

如果你已经解决了该问题, 非常希望你能够分享一下解决方案, 写成博客, 将相关链接放在评论区, 以帮助更多的人 ^-^