我有3个未解决的引用
anko，loop applicationContext 对于anco，我添加了
implementation "org.jetbrains.anko:anko-commons:$anko_version"
implementation "org.jetbrains.anko:anko-sdk25:$anko_version"
implementation "org.jetbrains.anko:anko-sdk25-listeners:$anko_version"
和
ext.anko_version='0.10.1'
我还需要为其他2项未解决的问题添加什么？
我必须添加
sourceSets {
main.kotlin.srcDirs += 'src/main/myKotlin'
}
我的Java代码和kotlin代码位于src / main / java / com / example / root / xyz /下的同一目录中。我已添加
sourceSets {
main.kotlin.srcDirs += 'src/main/java/com/example/root/securityalert/'
}
出现错误->无法获得类型为org.gradle.api.internal.tasks.DefaultSourceSet的源集“ main”的未知属性“ kotlin”
我正在尝试从Android中的Java代码调用kotlin代码。我从Internet获得了代码。我收到错误消息
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:compileDebugKotlin'.
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:100)
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.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$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.gradle.api.GradleException: Compilation error. See log for more details
at org.jetbrains.kotlin.gradle.tasks.TasksUtilsKt.throwGradleExceptionIfError(tasksUtils.kt:16)
at org.jetbrains.kotlin.gradle.tasks.KotlinCompile.processCompilerExitCode(Tasks.kt:429)
at org.jetbrains.kotlin.gradle.tasks.KotlinCompile.callCompiler$kotlin_gradle_plugin(Tasks.kt:390)
at org.jetbrains.kotlin.gradle.tasks.KotlinCompile.callCompiler$kotlin_gradle_plugin(Tasks.kt:274)
at org.jetbrains.kotlin.gradle.tasks.AbstractKotlinCompile.execute(Tasks.kt:233)
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$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:110)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:92)
... 32 more
我的Build.gradle（Project：xyz）文件是->
buildscript {
ext.kotlin_version = '1.2.50'
repositories {
google()
jcenter()
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.1.3'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
// Top-level build file where you can add configuration options common to all sub-projects/modules.
allprojects {
repositories {
google()
jcenter()
mavenCentral()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
我的build.gradle（Module：App）文件是->
/*plugins {
id "org.jetbrains.kotlin.jvm" //version "1.2.50"
}*/
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
android {
compileSdkVersion 26
defaultConfig {
applicationId "com.example.root.securityalert"
minSdkVersion 23
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
buildToolsVersion '27.0.3'
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
implementation 'com.android.support:design:26.1.0'
implementation 'io.reactivex.rxjava2:rxandroid:2.0.2'
implementation 'io.reactivex.rxjava2:rxjava:2.1.16'
implementation 'io.reactivex.rxjava2:rxkotlin:2.1.0'
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
compile 'com.android.support:support-annotations:27.1.1'
}
repositories {
mavenCentral()
}
代码
package com.example.root.securityalert
import android.bluetooth.BluetoothAdapter
import android.bluetooth.BluetoothDevice
import android.bluetooth.le.ScanCallback
import android.bluetooth.le.ScanFilter
import android.bluetooth.le.ScanResult
import android.bluetooth.le.ScanSettings
import android.os.Build
import android.support.annotation.RequiresApi
import com.loop.toolkit.kotlin.Utils.extensions.applicationContext
import io.reactivex.*
import io.reactivex.android.schedulers.AndroidSchedulers
import io.reactivex.schedulers.Schedulers
import org.jetbrains.anko.bluetoothManager
class BleScannerFlowable private constructor(
private val adapter: BluetoothAdapter,
private val stopCallback: ((BluetoothDevice) -> Boolean)? = null,
private val scanFilter: Array<out ScanFilter>? = null,
private val scanSettings: ScanSettings? = null
): FlowableOnSubscribe<BluetoothDevice> {
override fun subscribe(e: FlowableEmitter<BluetoothDevice>) {
if (isAboveLollipop()) {
setupSubscriber21(e)
} else {
setupSubscriber(e)
}
}
private fun setupSubscriber(emitter: FlowableEmitter<BluetoothDevice>) {
adapter.startLeScan { device, rssi, scanRecord ->
if (stopCallback?.invoke(device) == true) {
adapter.stopLeScan { device, rssi, scanRecord ->
emitter.onComplete()
}
}
emitter.onNext(device)
}
}
@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
private fun setupSubscriber21(emitter: FlowableEmitter<BluetoothDevice>) {
val isFilterSet = scanFilter?.isNotEmpty() == true
val filters = if (isFilterSet) scanFilter!!.toMutableList() else mutableListOf()
adapter.bluetoothLeScanner?.startScan(filters, scanSettings, ScanCaller(emitter))
}
@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
private inner class ScanCaller(private val emitter: FlowableEmitter<BluetoothDevice>) : ScanCallback() {
override fun onScanFailed(errorCode: Int) {
emitter.onError(Throwable("Scan failed with code $errorCode"))
}
override fun onScanResult(callbackType: Int, result: ScanResult?) {
if (result != null && result.device != null) {
if (stopCallback?.invoke(result.device) == true) {
adapter.bluetoothLeScanner?.stopScan(this)
emitter.onComplete()
} else {
emitter.onNext(result.device)
}
}
}
}
class Builder(private val adapter: BluetoothAdapter) {
private var scanFilter: Array<out ScanFilter>? = null
private var stopCallback: ((BluetoothDevice) -> Boolean)? = null
private var settingsBuilder: ScanSettings.Builder? = null
private var scanSettings: ScanSettings? = null
@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
fun setFilterByName(name: String) : Builder {
setScanFilters(ScanFilter.Builder()
.setDeviceName(name)
.build())
return this
}
@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
fun setScanFilters(vararg scanFilter: ScanFilter) : Builder{
this.scanFilter = scanFilter
return this
}
@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
fun setScanMode(scanMode: ScanModes) : Builder{
getSettingsBuilder().setScanMode(scanMode.settingId)
return this
}
fun setStopCallback(function: (BluetoothDevice) -> Boolean) : Builder {
this.stopCallback = function
return this
}
@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
fun setScanSettings(scanSettings: ScanSettings) : Builder {
this.scanSettings = scanSettings
return this
}
@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
fun build(): Flowable<BluetoothDevice> =
Flowable.create(BleScannerFlowable(adapter,
stopCallback,
scanFilter,
scanSettings ?: settingsBuilder?.build()),
BackpressureStrategy.LATEST)
fun buildLower(): Flowable<BluetoothDevice> =
Flowable.create(BleScannerFlowable(adapter, stopCallback),
BackpressureStrategy.LATEST)
@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
private fun getSettingsBuilder() : ScanSettings.Builder {
if (settingsBuilder == null) {
settingsBuilder = ScanSettings.Builder()
}
return settingsBuilder!!
}
}
}
@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
enum class ScanModes(val settingId: Int) {
LOW_LATENCY(ScanSettings.SCAN_MODE_LOW_LATENCY),
LOW_POWER(ScanSettings.SCAN_MODE_LOW_POWER),
BALANCED(ScanSettings.SCAN_MODE_BALANCED),
OPPORTUNISTIC(ScanSettings.SCAN_MODE_BALANCED)
}
fun startScanning() {
val adapter = applicationContext.bluetoothManager.adapter ?: return
val bleScanner = if (isAboveLollipop()) {
BleScannerFlowable.Builder(adapter)
.setScanMode(ScanModes.BALANCED)
.setStopCallback { it.name == "MyBleDevice" }
.build()
} else {
BleScannerFlowable.Builder(adapter)
.setStopCallback { it.name == "MyBleDevice" }
.buildLower()
}
bleScanner
.observeOn(AndroidSchedulers.mainThread())
.subscribe({
// do something with the bluetooth device
}, {
// handle error
it.printStackTrace()
}, {
// do on finish scan
})
}
fun isAboveLollipop() = Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP
答案 0 :(得分：0)
您的Gradle文件中的android块是在com.android.application插件中实现的。您需要取消注释该行
apply plugin: com.android.application
可以使用它。您应该为此取消两个apply plugin语句的注释。它们是必需的。