Firestore问题：CloudFirestorePlugin.java使用未经检查或不安全的操作

Question

安装Firestore依赖项后，在运行我的项目时出现以下错误。我该怎么办？

注意：C：\ src \ flutter.pub-cache \ hosted \ pub.dartlang.org \ cloud_firestore-0.13.5 \ android \ src \ main \ java \ io \ flutter \ plugins \ firebase \ cloudfirestore \ CloudFirestorePlugin.java使用未经检查或不安全的操作。注意：重新编译-Xlint：未经检查以获取详细信息。 D8：无法在单个dex文件中容纳请求的类（＃方法：79495> 65536）com.android.builder.dexing.DexArchiveMergerException：时出错合并dex档案：.dex文件中方法引用的数量不能超过64K。了解如何解决此问题，网址为：https://developer.android.com/tools/building/multidex.html位于com.android.builder.dexing.D8DexArchiveMerger.getExceptionToRethrow（D8DexArchiveMerger.java:131）在com.android.builder.dexing.D8DexArchiveMerger.mergeDexArchives（D8DexArchiveMerger.java:118）在com.android.build.gradle.internal.transforms.DexMergerTransformCallable.call（DexMergerTransformCallable.java:102）在com.android.build.gradle.internal.tasks.DexMergingTaskRunnable.run（DexMergingTask.kt：444）在com.android.build.gradle.internal.tasks.Workers $ ActionFacade.run（Workers.kt：335）在org.gradle.workers.internal.AdapterWorkAction.execute（AdapterWorkAction.java:50）在org.gradle.workers.internal.DefaultWorkerServer.execute（DefaultWorkerServer.java:47）在org.gradle.workers.internal.NoIsolationWorkerFactory $ 1 $ 1 $ 1.create（NoIsolationWorkerFactory.java:65）在org.gradle.workers.internal.NoIsolationWorkerFactory $ 1 $ 1 $ 1.create（NoIsolationWorkerFactory.java:61）在org.gradle.internal.classloader.ClassLoaderUtils.executeInClassloader（ClassLoaderUtils.java:98）在org.gradle.workers.internal.NoIsolationWorkerFactory $ 1 $ 1.execute（NoIsolationWorkerFactory.java:61）在org.gradle.workers.internal.AbstractWorker $ 1.call（AbstractWorker.java:44）在org.gradle.workers.internal.AbstractWorker $ 1.call（AbstractWorker.java:41）在org.gradle.internal.operations.DefaultBuildOperationExecutor $ CallableBuildOperationWorker.execute（DefaultBuildOperationExecutor.java:416）在org.gradle.internal.operations.DefaultBuildOperationExecutor $ CallableBuildOperationWorker.execute（DefaultBuildOperationExecutor.java:406）在org.gradle.internal.operations.DefaultBuildOperationExecutor $ 1.execute（DefaultBuildOperationExecutor.java:165）在org.gradle.internal.operations.DefaultBuildOperationExecutor.execute（DefaultBuildOperationExecutor.java:250）在org.gradle.internal.operations.DefaultBuildOperationExecutor.execute（DefaultBuildOperationExecutor.java:158）在org.gradle.internal.operations.DefaultBuildOperationExecutor.call（DefaultBuildOperationExecutor.java:102）在org.gradle.internal.operations.DelegatingBuildOperationExecutor.call（DelegatingBuildOperationExecutor.java:36）在org.gradle.workers.internal.AbstractWorker.executeWrappedInBuildOperation（AbstractWorker.java:41）在org.gradle.workers.internal.NoIsolationWorkerFactory $ 1.execute（NoIsolationWorkerFactory.java:56）在org.gradle.workers.internal.DefaultWorkerExecutor $ 3.call（DefaultWorkerExecutor.java:215）在org.gradle.workers.internal.DefaultWorkerExecutor $ 3.call（DefaultWorkerExecutor.java:210）在java.util.concurrent.FutureTask.run（FutureTask.java:266）在org.gradle.internal.work.DefaultConditionalExecutionQueue $ ExecutionRunner.runExecution（DefaultConditionalExecutionQueue.java:215）在org.gradle.internal.work.DefaultConditionalExecutionQueue $ ExecutionRunner.runBatch（DefaultConditionalExecutionQueue.java:164）在org.gradle.internal.work.DefaultConditionalExecutionQueue $ ExecutionRunner.run（DefaultConditionalExecutionQueue.java:131）在java.util.concurrent.Executors $ RunnableAdapter.call（Executors.java:511）在java.util.concurrent.FutureTask.run（FutureTask.java:266）在org.gradle.internal.concurrent.ExecutorPolicy $ CatchAndRecordFailures.onExecute（ExecutorPolicy.java:64）在org.gradle.internal.concurrent.ManagedExecutorImpl $ 1.run（ManagedExecutorImpl.java:48）在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1149）在java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:624）在org.gradle.internal.concurrent.ThreadFactoryImpl $ ManagedThreadRunnable.run（ThreadFactoryImpl.java:56）在java.lang.Thread.run（Thread.java:748）造成原因：com.android.tools.r8.CompilationFailedException：编译失败在com.android.tools.r8.utils.t.a（：55）处完成com.android.tools.r8.D8.run（：11）位于com.android.builder.dexing.D8DexArchiveMerger.mergeDexArchives（D8DexArchiveMerger.java:116）... 34更多原因：com.android.tools.r8.utils.AbortException：错误：null，无法在单个dex文件中容纳请求的类（＃方法：79495> 65536），位于com.android.tools.r8.utils.Reporter.a（：21）在com.android.tools.r8.utils.Reporter.a（：7）处com.android.tools.r8.dex.VirtualFile.a（：33）位于com.android.tools.r8.dex.VirtualFile $ h.a（：5）在com.android.tools.r8.dex.ApplicationWriter.a（：13）位于com.android.tools.r8.dex.ApplicationWriter.write（：35）位于com.android.tools.r8.D8.d（：44）位于com.android.tools.r8.D8.b（：1）位于com.android.tools.r8.utils.t.a（：23）... 36更多

FAILURE：构建因异常而失败。

• 出了什么问题：任务'：app：mergeDexDebug'的执行失败。

  执行com.android.build.gradle.internal.tasks.Workers $ ActionFacade时发生故障com.android.builder.dexing.DexArchiveMergerException：合并dex归档文件时出错：.dex文件中方法引用的数量不能超过64K。要了解如何解决此问题，请访问https://developer.android.com/tools/building/multidex.html

• 尝试：使用--stacktrace选项运行以获取堆栈跟踪。使用--info或--debug选项运行以获取更多日志输出。使用--scan运行以获取完整的见解。

• 在https://help.gradle.org获取更多帮助

在5m 31s内建立失败[！]收缩器可能无法优化Java字节码。要禁用收缩器，请将--no-shrink标志传递给此命令。要了解更多信息，请参见：https://developer.android.com/studio/build/shrink-code完成于错误：Gradle任务assembleDebug失败，退出代码为1

Answer 1

如果尚未启用multidex，请转到android-> app-> gradle.build并添加

multidrxEnabled true

在defaultConfig中

应该看起来像这样：

defaultConfig {
            // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
            applicationId "com.example.chat_app_flutter_firebase"
            minSdkVersion 16
            targetSdkVersion 28
            versionCode flutterVersionCode.toInteger()
            versionName flutterVersionName
            testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

            //Enable multidex by adding this line 

            multiDexEnabled true
        }