环境：Android Studio 4.0 打开虚拟设备时，弹出“Unable to locate adb”，如下图：
分类： Android Studio
com.android.tools.r8.ApiLevelException: Invoke-customs are only supported starting with Android O
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com.android.builder.dexing.DexArchiveBuilderException: com.android.builder.dexing.DexArchiveBuilderException: Failed to process /Users/Project/GitLab/rsdk-client-plugin-android/Android/Plugins/AndroidStudio/sq37gameshskd/riversdk_core_libs/libs/okhttp-3.14.2.jar at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at java.util.concurrent.ForkJoinTask.getThrowableException(ForkJoinTask.java:593) at java.util.concurrent.ForkJoinTask.reportException(ForkJoinTask.java:677) at java.util.concurrent.ForkJoinTask.join(ForkJoinTask.java:720) at com.android.ide.common.internal.WaitableExecutor.waitForTasksWithQuickFail(WaitableExecutor.java:146) at com.android.build.gradle.internal.transforms.DexArchiveBuilderTransform.transform(DexArchiveBuilderTransform.java:308) at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:221) at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:217) at com.android.builder.profile.ThreadRecorder.record(ThreadRecorder.java:102) at com.android.build.gradle.internal.pipeline.TransformTask.transform(TransformTask.java:212) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73) at org.gradle.api.internal.project.taskfactory.IncrementalTaskAction.doExecute(IncrementalTaskAction.java:46) at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:39) at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:26) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:121) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328) at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:110) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:92) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70) at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51) at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:62) at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54) at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:60) at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:97) at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:87) at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:52) at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52) at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54) at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43) at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:248) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328) at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:241) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:230) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:123) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:79) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:104) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:98) at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:626) at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:581) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:98) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:59) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:128) at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37) at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37) at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java:23) at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java:43) at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:46) at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37) at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:30) at org.gradle.initialization.DefaultGradleLauncher$ExecuteTasks.run(DefaultGradleLauncher.java:314) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328) at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110) at org.gradle.initialization.DefaultGradleLauncher.runTasks(DefaultGradleLauncher.java:204) at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:134) at org.gradle.initialization.DefaultGradleLauncher.executeTasks(DefaultGradleLauncher.java:109) at org.gradle.internal.invocation.GradleBuildController$1.call(GradleBuildController.java:78) at org.gradle.internal.invocation.GradleBuildController$1.call(GradleBuildController.java:75) at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:152) at org.gradle.internal.invocation.GradleBuildController.doBuild(GradleBuildController.java:100) at org.gradle.internal.invocation.GradleBuildController.run(GradleBuildController.java:75) at org.gradle.tooling.internal.provider.runner.BuildModelActionRunner.run(BuildModelActionRunner.java:53) at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35) at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35) at org.gradle.tooling.internal.provider.ValidatingBuildActionRunner.run(ValidatingBuildActionRunner.java:32) at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner$1.run(RunAsBuildOperationBuildActionRunner.java:43) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328) at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110) at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner.run(RunAsBuildOperationBuildActionRunner.java:40) at org.gradle.tooling.internal.provider.SubscribableBuildActionRunner.run(SubscribableBuildActionRunner.java:51) at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:47) at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:30) at org.gradle.launcher.exec.BuildTreeScopeBuildActionExecuter.execute(BuildTreeScopeBuildActionExecuter.java:39) at org.gradle.launcher.exec.BuildTreeScopeBuildActionExecuter.execute(BuildTreeScopeBuildActionExecuter.java:25) at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:80) at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:53) at org.gradle.tooling.internal.provider.ServicesSetupBuildActionExecuter.execute(ServicesSetupBuildActionExecuter.java:57) at org.gradle.tooling.internal.provider.ServicesSetupBuildActionExecuter.execute(ServicesSetupBuildActionExecuter.java:32) at org.gradle.tooling.internal.provider.GradleThreadBuildActionExecuter.execute(GradleThreadBuildActionExecuter.java:36) at org.gradle.tooling.internal.provider.GradleThreadBuildActionExecuter.execute(GradleThreadBuildActionExecuter.java:25) at org.gradle.tooling.internal.provider.ParallelismConfigurationBuildActionExecuter.execute(ParallelismConfigurationBuildActionExecuter.java:43) at org.gradle.tooling.internal.provider.ParallelismConfigurationBuildActionExecuter.execute(ParallelismConfigurationBuildActionExecuter.java:29) at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:69) at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:30) at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:59) at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:44) at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:45) at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:30) at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:67) at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122) at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:37) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122) at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122) at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122) at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:74) at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:72) at org.gradle.util.Swapper.swap(Swapper.java:38) at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:72) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122) at org.gradle.launcher.daemon.server.exec.LogAndCheckHealth.execute(LogAndCheckHealth.java:55) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122) at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:62) at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122) at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:82) at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122) at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50) at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:295) at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63) at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55) at java.lang.Thread.run(Thread.java:748) Caused by: com.android.builder.dexing.DexArchiveBuilderException: Failed to process /Users/Project/GitLab/rsdk-client-plugin-android/Android/Plugins/AndroidStudio/sq37gameshskd/riversdk_core_libs/libs/okhttp-3.14.2.jar at com.android.build.gradle.internal.transforms.DexArchiveBuilderTransform.launchProcessing(DexArchiveBuilderTransform.java:805) at com.android.build.gradle.internal.transforms.DexArchiveBuilderTransform.lambda$convertToDexArchive$8(DexArchiveBuilderTransform.java:730) at java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1424) at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056) at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157) Caused by: com.android.builder.dexing.DexArchiveBuilderException: Error while dexing. The dependency contains Java 8 bytecode. Please enable desugaring by adding the following to build.gradle android { compileOptions { sourceCompatibility 1.8 targetCompatibility 1.8 } } See https://developer.android.com/studio/write/java8-support.html for details. Alternatively, increase the minSdkVersion to 26 or above. at com.android.builder.dexing.D8DexArchiveBuilder.getExceptionToRethrow(D8DexArchiveBuilder.java:175) at com.android.builder.dexing.D8DexArchiveBuilder.convert(D8DexArchiveBuilder.java:152) at com.android.build.gradle.internal.transforms.DexArchiveBuilderTransform.launchProcessing(DexArchiveBuilderTransform.java:800) ... 6 more Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete at com.android.tools.r8.utils.ExceptionUtils.withCompilationHandler(ExceptionUtils.java:76) at com.android.tools.r8.utils.ExceptionUtils.withD8CompilationHandler(ExceptionUtils.java:45) at com.android.tools.r8.D8.run(D8.java:88) at com.android.builder.dexing.D8DexArchiveBuilder.convert(D8DexArchiveBuilder.java:147) ... 7 more Caused by: com.android.tools.r8.utils.AbortException at com.android.tools.r8.utils.Reporter.failIfPendingErrors(Reporter.java:77) at com.android.tools.r8.utils.Reporter.fatalError(Reporter.java:67) at com.android.tools.r8.utils.ExceptionUtils.withCompilationHandler(ExceptionUtils.java:62) ... 10 more Suppressed: com.android.tools.r8.ApiLevelException: Invoke-customs are only supported starting with Android O (--min-api 26) at com.android.tools.r8.dex.FileWriter.checkThatInvokeCustomIsAllowed(FileWriter.java:1296) at com.android.tools.r8.dex.FileWriter.writeCallSite(FileWriter.java:635) at com.android.tools.r8.dex.FileWriter.writeFixedSectionItems(FileWriter.java:302) at com.android.tools.r8.dex.FileWriter.generate(FileWriter.java:193) at com.android.tools.r8.dex.ApplicationWriter.writeDexFile(ApplicationWriter.java:356) at com.android.tools.r8.dex.ApplicationWriter.lambda$write$2(ApplicationWriter.java:188) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Suppressed: java.util.concurrent.ExecutionException: com.android.tools.r8.ApiLevelException: Invoke-customs are only supported starting with Android O (--min-api 26) at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at com.android.tools.r8.utils.ThreadUtils.awaitFutures(ThreadUtils.java:21) at com.android.tools.r8.dex.ApplicationWriter.write(ApplicationWriter.java:216) at com.android.tools.r8.D8.run(D8.java:167) at com.android.tools.r8.D8.lambda$run$1(D8.java:91) at com.android.tools.r8.utils.ExceptionUtils.withCompilationHandler(ExceptionUtils.java:58) at com.android.tools.r8.utils.ExceptionUtils.withD8CompilationHandler(ExceptionUtils.java:45) at com.android.tools.r8.D8.run(D8.java:88) at com.android.builder.dexing.D8DexArchiveBuilder.convert(D8DexArchiveBuilder.java:147) at com.android.build.gradle.internal.transforms.DexArchiveBuilderTransform.launchProcessing(DexArchiveBuilderTransform.java:800) at com.android.build.gradle.internal.transforms.DexArchiveBuilderTransform.lambda$convertToDexArchive$8(DexArchiveBuilderTransform.java:730) at java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1424) at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056) at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157) [CIRCULAR REFERENCE:com.android.tools.r8.ApiLevelException: Invoke-customs are only supported starting with Android O (--min-api 26)] :app:transformClassesWithDexBuilderForRelease FAILED FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':app:transformClassesWithDexBuilderForRelease'. |
原因是某些第三方库使用了Java 1.8的API，导致整个项目必须使用Java 1.8。
解决方法就是增加如下编译命令
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compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } |
完整的例子如下：
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apply plugin: 'com.android.library' android { compileSdkVersion 30 buildToolsVersion "30.0.2" defaultConfig { minSdkVersion 14 targetSdkVersion 30 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" consumerProguardFiles "consumer-rules.pro" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' } } compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } } dependencies { implementation fileTree(dir: "libs", include: ["*.jar"]) implementation 'com.android.support:appcompat-v7:28.0.0' implementation 'pub.devrel:easypermissions:2.0.1' testImplementation 'junit:junit:4.13' androidTestImplementation 'com.android.support.test:runner:1.0.2' androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' } |
参考链接
IntelliJ IDEA/Android Studio中统计代码行数
IntelliJ IDEA/Android Studio的插件库，统计代码行数可以用到插件：Statistic。
Robolectric单元测试报错“ReflectionHelpers.java java.lang.IllegalAccessException at UnsafeFieldAccessorImpl.java”
macOS Catalina 10.15.6，使用HomeBrew执行brew install java,安装了目前最新的openjdk-14.0.1之后，执行bash gradlew clean build,报告如下错误信息：
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com.xxxx.plugin.face.FaceTest > executeAsync_Success FAILED java.lang.RuntimeException at ReflectionHelpers.java:223 Caused by: java.lang.RuntimeException at ReflectionHelpers.java:208 Caused by: java.lang.IllegalAccessException at UnsafeFieldAccessorImpl.java:76 |
目前测试发现，升级Robolectric版本并不能解决问题。其实对于Android Studio来说，完全可以指定Android Studio自带的JDK进行编译。
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$ echo "export JAVA_HOME='/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home'" >> ~/.bashrc $ source ~/.bashrc # 由于macOS Catalina 10.15.6已经切换到zsh了，因此需要配置zsh的配置文件 $ echo "export JAVA_HOME='/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home'" >> ~/.zprofile $ source ~/.zprofile |
关闭SHELL，之后重新打开新的SHELL，重新执行编译命令即可。
建议Android版本发布使用的JDK就是Android Studio自带的JDK，这样可以保证应用的稳定性，减少由于JDK差异导致的各种问题。
当前建议的版本
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$ java -version openjdk version "1.8.0_242-release" OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593) OpenJDK 64-Bit Server VM (build 25.242-b3-6222593, mixed mode) |
参考链接
在macOS Catalina(10.15.5)上搭建Flutter开发环境
下载并安装目前最新的Android Studio 4.0，然后通过Android Studio 4.0安装Android SDK。
下载目前最新的flutter
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$ cd ~ $ mkdir Android $ cd Android $ git clone -b stable https://github.com/flutter/flutter.git |
配置环境变量
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$ export PATH=/Users/`whoami`/Android/flutter/bin:$PATH # android sdk目录，替换为你自己的即可，下面是Android Studio安装SDK的默认目录 $ export ANDROID_HOME="/Users/`whoami`/Library/Android/sdk" $ export PATH=${PATH}:${ANDROID_HOME}/tools $ export PATH=${PATH}:${ANDROID_HOME}/platform-tools $ export PUB_HOSTED_URL=https://pub.flutter-io.cn $ export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn |
上述环境变量，全部追加到 .bashrc 尾部
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export PATH=/Users/`whoami`/Android/flutter/bin:$PATH # android sdk目录，替换为你自己的即可，下面是Android Studio安装SDK的默认目录 export ANDROID_HOME="/Users/`whoami`/Library/Android/sdk" export PATH=${PATH}:${ANDROID_HOME}/tools export PATH=${PATH}:${ANDROID_HOME}/platform-tools export PUB_HOSTED_URL=https://pub.flutter-io.cn export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn |
如果不增加到.bashrc 尾部，则在 Android Studio 4.0 创建项目的时候，会非常慢，主要是网络问题。
必要的环境配置，依赖下载
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#对于 macOS Catalina 10.15.5 来说，由于Shell被替换成了ZSH,因此环境变量需要重新配置一下 $ cp /etc/zprofile ~/.zprofile $ chmod u+w ~/.zprofile $ echo "source ~/.bashrc" >> .zprofile $ flutter doctor $ flutter doctor --android-licenses $ sudo gem install cocoapods # 杀掉全部的dart进程，否则可能导致长时间无法创建项目的问题 # 任何时候，flutter相关卡住，貌似都可以这样操作 $ killall -9 dart |
在Android Studio 4.X下查看窗口布局层次Hierarchy Viewer/Layout Inspector
在Android开发的时候，又是需要检查窗口布局层次，观察布局是否显示正确。
早期版本是使用Hierarchy Viewer ,最新的Android Studio 4.X下，我们使用 Layout Inspector,具体操作参考下图：
继续阅读在Android Studio 4.X下查看窗口布局层次Hierarchy Viewer/Layout Inspector
Activity singleInstance/singleTop启动模式的理解
Android有四种启动模式，分别是standard，singleTop，singleTask，singleInstance。下面分别简单的介绍下这四种启动模式的作用。
standard
Android 默认的一种启动模式。不需要为activity设置launchMode。这种启动模式简单的来说就是当你startActivity的时候，他就创建一个。
singleTop
这种模式模式从字面意思就能看得出来，就是当前的activity处于栈顶的时候，当你startActivity当前的activity的时候，它不会创建新的activity，而是会复用之前的activity。举个例子，startActivity了一个ActivityA，ActivityA又startActivity了ActivityB，当在ActivityB再次startActivity一个ActivityB的时候，它不会创建一个新的ActivityB，而是复用之前的ActivityB。
这里需要注意的是，只有当前的activity处于栈顶的时候才管用。举个例子：startActivity了一个ActivityA，ActivityA又startActivity了ActivityB，ActivityB又startActivity了ActivityA，那么ActivityA还是会重新创建，而不是复用之前的ActivityA。
singleTask
单一任务。意思就是说当前的activity只有一个实例，无论在任何地方startActivity出来这个activity，它都只存在一个实例。并且，它会将在他之上的所有activity都销毁。通常这个activity都是用来作为MainActivity。因为主页只需要存在一个，然后回到主页的时候可以将所有的activity都销毁起到退出应用的作用。举个例子，startActivity了一个ActivityA，ActivityA的启动模式为singleTask，那么在ActivityA里startActivity了一个ActivityB，在ActivityB里startActivity了一个ActivityC。此时在当前的任务栈中的顺序是，ActivityA->ActivityB->ActivityC。然后在ActivityC里重新startActivity了一个ActivityA，此时ActivityA会将存在于它之上的所有activity都销毁。所以此时任务栈中就只剩下ActivityA了。
singleInstance
这个模式才是重点，也是比较容易入坑的一种启动模式。字面上理解为单一实例。它具备所有singleTask的特点，唯一不同的是，它是存在于另一个任务栈中。上面的三种模式都存在于同一个任务栈中，而这种模式则是存在于另一个任务栈中。
注意事项
以往的理解中，只要在AndroidManifest.xml中声明singleTop或者singleInstance,那么在使用startActivity或者startActivityForResult的时候，自动就会保证singleInstance的情况下只有一个对象，singleTop的情况下不会两个相同的Activity叠加在一起。
但是现实是让人崩溃的。
使用如下的代码：
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package com.mobibrw.myapplication; import androidx.appcompat.app.AppCompatActivity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.Button; public class MainActivity extends AppCompatActivity { private final static int SINGLE_INSTANCE = 1; private final static int SINGLE_TOP = 2; private void startSingleInstanceActivity() { final Intent intent = new Intent(this, SingleInstanceActivity.class); //intent.addFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | Intent.FLAG_ACTIVITY_REORDER_TO_FRONT); startActivityForResult(intent, SINGLE_INSTANCE); } private void startSingleTopActivity() { final Intent intent = new Intent(this, SingleTopActivity.class); //intent.addFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | Intent.FLAG_ACTIVITY_REORDER_TO_FRONT); startActivityForResult(intent, SINGLE_TOP); } private void startSingleInstanceWithFlagsActivity() { final Intent intent = new Intent(this, SingleInstanceActivity.class); intent.addFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | Intent.FLAG_ACTIVITY_REORDER_TO_FRONT); startActivityForResult(intent, SINGLE_INSTANCE); } private void startSingleTopWithFlagsActivity() { final Intent intent = new Intent(this, SingleTopActivity.class); intent.addFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | Intent.FLAG_ACTIVITY_REORDER_TO_FRONT); startActivityForResult(intent, SINGLE_TOP); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Button btnSingleTop = findViewById(R.id.SingleTop); btnSingleTop.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { startSingleTopActivity(); startSingleTopActivity(); } }); Button btnSingleInstance = findViewById(R.id.SingleInstance); btnSingleInstance.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { startSingleInstanceActivity(); startSingleInstanceActivity(); } }); Button btnSingleTopWithFlags = findViewById(R.id.SingleTopWithFlags); btnSingleTopWithFlags.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { startSingleTopWithFlagsActivity(); startSingleTopWithFlagsActivity(); } }); Button btnSingleInstanceWithFlags = findViewById(R.id.SingleInstanceWithFlags); btnSingleInstanceWithFlags.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { startSingleInstanceWithFlagsActivity(); startSingleInstanceWithFlagsActivity(); } }); } } |
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<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.mobibrw.myapplication"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".SingleInstanceActivity" android:launchMode="singleInstance"/> <activity android:name=".SingleTopActivity" android:launchMode="singleTop"/> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest> |
在两次触发startSingleTopActivity/startSingleInstanceActivity的时候，出现了两个叠加的Activity，如下：
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$ adb shell dumpsys activity | grep SingleTopActivity Hist #2: ActivityRecord{6f4fc4 u0 com.mobibrw.myapplication/.SingleTopActivity t457} Intent { cmp=com.mobibrw.myapplication/.SingleTopActivity } Hist #1: ActivityRecord{4a4ec71 u0 com.mobibrw.myapplication/.SingleTopActivity t457} Intent { cmp=com.mobibrw.myapplication/.SingleTopActivity } Run #1: ActivityRecord{6f4fc4 u0 com.mobibrw.myapplication/.SingleTopActivity t457} mResumedActivity: ActivityRecord{6f4fc4 u0 com.mobibrw.myapplication/.SingleTopActivity t457} mFocusedActivity: ActivityRecord{6f4fc4 u0 com.mobibrw.myapplication/.SingleTopActivity t457} |
可以看到出现两个单独的实例 Hist #2/Hist #1，而不是预期的忽略第二次调用。
在两次触发startSingleTopWithFlagsActivity/startSingleInstanceWithFlagsActivity的时候，只会出现了一个Activity，如下：
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$ adb shell dumpsys activity | grep SingleTopActivity Hist #1: ActivityRecord{933a335 u0 com.mobibrw.myapplication/.SingleTopActivity t457} Intent { flg=0x420000 cmp=com.mobibrw.myapplication/.SingleTopActivity } Run #1: ActivityRecord{933a335 u0 com.mobibrw.myapplication/.SingleTopActivity t457} mResumedActivity: ActivityRecord{933a335 u0 com.mobibrw.myapplication/.SingleTopActivity t457} mFocusedActivity: ActivityRecord{933a335 u0 com.mobibrw.myapplication/.SingleTopActivity t457} |
两者的区别就是
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intent.addFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | Intent.FLAG_ACTIVITY_REORDER_TO_FRONT); |
这句代码。
还是学艺不精啊。
完整例子代码，点击此处下载 MyApplication
参考链接
Gradle: 一个诡异的问题(ERROR: Failed to parse XML AndroidManifest.xml ParseError at [row,col]:[5,5] Message: expected start or end tag)
今天同事说他下了一个老版本的Android Studio项目死活编不过，我心想不就是一个项目么，编不过要么就是代码有问题，要么就是依赖库不完整这能有什么问题，于是自己在自己电脑试了下，结果自己也中招了：
error: cannot find symbol import android.support.v7.widget.ListViewCompat;
项目中，当
com.android.support:appcompat-v7升级到28之后，出现如下错误
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~/Source/TimeFlow/lib-ui/src/main/java/com/mobibrw/lib/ui/SwipeListView/SwipeListView.java:194: 错误: 找不到符号 import android.support.v7.widget.ListViewCompat; ^ 符号: 类 ListViewCompat 位置: 程序包 android.support.v7.widget |
这个原因是由于com.android.support:appcompat-v7升级到28之后
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implementation 'com.android.support:appcompat-v7:28.+' |
已经不包含 android.support.v7.widget.ListViewCompat;这个类了。
我们要么使用android.support.v4.widget.ListViewCompat;替代，要么直接使用android.widget.ListView。
目前的解决方法是直接使用android.widget.ListView
参考链接
加快Android Studio 3.6.3的编译速度
1. 加大给Android Studio 3.6.3分配的内存
打开Android Studio的安装目录，找到虚拟机的配置文件，进行修改，如下：
Windows
编辑安装目录下的bin\studio64.exe.vmoptions
macOS Catalina(10.15.4)
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$ sudo vim /Applications/Android\ Studio.app/Contents/bin/studio.vmoptions |