Java 错误ndkBuild:createprocess错误=2系统找不到指定的文件

我用NDK运行一个项目，Gradle被同步。 运行项目时，程序将发出以下错误：

error ndkBuild: createprocess error=2 the system cannot find the file specified org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':XFacePCA:ndkBuild'. at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:97) 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.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63) at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$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: org.gradle.process.internal.ExecException: A problem occurred starting process 'command '/Users/hujiawei/Android/android_ndk/ndk-build'' at org.gradle.process.internal.DefaultExecHandle.execExceptionFor(DefaultExecHandle.java:222) at org.gradle.process.internal.DefaultExecHandle.setEndStateInfo(DefaultExecHandle.java:202) at org.gradle.process.internal.DefaultExecHandle.failed(DefaultExecHandle.java:342) at org.gradle.process.internal.ExecHandleRunner.run(ExecHandleRunner.java:86) at org.gradle.internal.operations.BuildOperationIdentifierPreservingRunnable.run(BuildOperationIdentifierPreservingRunnable.java:39) ... 6 more Caused by: net.rubygrapefruit.platform.NativeException: Could not start '/Users/hujiawei/Android/android_ndk/ndk-build' at net.rubygrapefruit.platform.internal.DefaultProcessLauncher.start(DefaultProcessLauncher.java:27) at net.rubygrapefruit.platform.internal.WindowsProcessLauncher.start(WindowsProcessLauncher.java:22) at net.rubygrapefruit.platform.internal.WrapperProcessLauncher.start(WrapperProcessLauncher.java:36) at org.gradle.process.internal.ExecHandleRunner.run(ExecHandleRunner.java:68) ... 7 more Caused by: java.io.IOException: Cannot run program "/Users/hujiawei/Android/android_ndk/ndk-build" (in directory "C:\Users\amir\Desktop\XFace\XFacePCA"): CreateProcess error=2, The system cannot find the file specified at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048) at net.rubygrapefruit.platform.internal.DefaultProcessLauncher.start(DefaultProcessLauncher.java:25) ... 10 more Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified at java.lang.ProcessImpl.create(Native Method) at java.lang.ProcessImpl.(ProcessImpl.java:386) at java.lang.ProcessImpl.start(ProcessImpl.java:137) at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029) ... 11 more 我还升级了Gradle和NDK版本

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我不知道问题出在哪里。如何解决我的问题？

有人知道原因吗？为什么要手动触发ndk生成？这一切都可以从gradle自动完成。

android {
    compileSdkVersion 27

    sourceSets.main.jni.srcDirs = []

    task ndkBuild(type: Exec, description: 'Compile JNI source via NDK') {
        commandLine "$ndkDir/ndk-build",
        'NDK_PROJECT_PATH=build/intermediates/ndk',
        'NDK_LIBS_OUT=src/main/jniLibs',
        'APP_BUILD_SCRIPT=src/main/jni/Android.mk',
        'NDK_APPLICATION_MK=src/main/jni/Application.mk'
    }

    tasks.withType(JavaCompile) {
        compileTask -> compileTask.dependsOn ndkBuild
    }

    dependencies {
        implementation fileTree(dir: 'libs', include: ['*.jar'])
        implementation project(':OpenCVLibrary244')
        implementation 'com.android.support:support-v4:27.0.2'
    }