我搜索了这个问题并尝试了所提出的解决方案但没有成功.我有一个项目,当我去查看源文件时,让我说Fragment它让我到

java类就好了.

现在当我去File – >新项目并完成所有相同的设置程序.现在,当我单击Fragment的源代码时,我将被带到反编译类文件中.

我的新项目是SDK 28,我已经执行了更新,但它们没有改变任何东西.通过将我的compileSDKVersion设置为27并相应地调整依赖项,它可以工作.但它应该只适用于SDK 28,我不明白我缺少什么

在下面的照片中,您可以看到我已安装API28的来源

此外,当我单击下面的“下载源”选项时,我收到以下IDE错误

java.util.NoSuchElementException

at java.util.Collections$EmptyIterator.next(Collections.java:4189)

at org.jetbrains.plugins.gradle.util.GradleAttachSourcesProvider.getSourceFile(GradleAttachSourcesProvider.java:160)

at org.jetbrains.plugins.gradle.util.GradleAttachSourcesProvider.access$100(GradleAttachSourcesProvider.java:59)

at org.jetbrains.plugins.gradle.util.GradleAttachSourcesProvider$1$1.onSuccess(GradleAttachSourcesProvider.java:126)

at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$7.execute(ExternalSystemUtil.java:876)

at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$9.run(ExternalSystemUtil.java:905)

at com.intellij.openapi.progress.impl.CoreProgressManager$TaskRunnable.run(CoreProgressManager.java:713)

at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$1(CoreProgressManager.java:157)

at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:543)

at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:488)

at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:94)

at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:144)

at com.intellij.openapi.progress.impl.ProgressManagerImpl$2.run(ProgressManagerImpl.java:165)

at com.intellij.openapi.application.impl.ApplicationImpl$1.run(ApplicationImpl.java:315)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)

at java.util.concurrent.FutureTask.run(FutureTask.java:266)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at java.lang.Thread.run(Thread.java:745)

我的gradle文件具有正确的SDK集,您可以在项目结构的外部库部分中看到.jar文件夹

但当我点击源代码时,我看到的是Decompile Class !!