问题：
Dex: Error converting bytecode to dex:
Cause: Dex cannot parse version 52 byte code.
This is caused by library dependencies that have been compiled using Java 8 or above.
If you are using the 'java' gradle plugin in a library submodule add
targetCompatibility = '1.7'
sourceCompatibility = '1.7'
to that submodule's build.gradle file.
UNEXPECTED TOP-LEVEL EXCEPTION:
java.lang.RuntimeException: Exception parsing classes
at com.android.dx.command.dexer.Main.processClass(Main.java:781)
at com.android.dx.command.dexer.Main.processFileBytes(Main.java:747)
at com.android.dx.command.dexer.Main.access$1200(Main.java:88)
at com.android.dx.command.dexer.Main$FileBytesConsumer.processFileBytes(Main.java:1689)
at com.android.dx.cf.direct.ClassPathOpener.processArchive(ClassPathOpener.java:284)
at com.android.dx.cf.direct.ClassPathOpener.processOne(ClassPathOpener.java:166)
at com.android.dx.cf.direct.ClassPathOpener.process(ClassPathOpener.java:144)
at com.android.dx.command.dexer.Main.processOne(Main.java:695)
at com.android.dx.command.dexer.Main.processAllFiles(Main.java:587)
at com.android.dx.command.dexer.Main.runMultiDex(Main.java:376)
at com.android.dx.command.dexer.Main.run(Main.java:290)
at com.android.builder.internal.compiler.DexWrapper.run(DexWrapper.java:54)
at com.android.builder.core.DexByteCodeConverter.lambda$dexInProcess$0(DexByteCodeConverter.java:174)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: com.android.dx.cf.iface.ParseException: bad class file magic (cafebabe) or version (0034.0000)
at com.android.dx.cf.direct.DirectClassFile.parse0(DirectClassFile.java:476)
at com.android.dx.cf.direct.DirectClassFile.parse(DirectClassFile.java:406)
at com.android.dx.cf.direct.DirectClassFile.parseToInterfacesIfNecessary(DirectClassFile.java:388)
at com.android.dx.cf.direct.DirectClassFile.getMagic(DirectClassFile.java:251)
at com.android.dx.command.dexer.Main.parseClass(Main.java:793)
at com.android.dx.command.dexer.Main.access$1600(Main.java:88)
at com.android.dx.command.dexer.Main$ClassParserTask.call(Main.java:1728)
at com.android.dx.command.dexer.Main.processClass(Main.java:779)
... 16 more
1 error; aborting
com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.ide.common.process.ProcessException: Return code 1 for dex process
网上查找都是改jdk版本等 在我这里都解决不了。。。
我的解决方式：提高Android studio 版本到 3.0.1
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