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kotlin项目集成dagger2时遇到：
E:\Users\lenovo\MyDagger2\app\src\main\java\com\xq\mydagger2\MainActivity.kt
Error:(22, 9) Unresolved reference: DaggerMainComponent
Error:Execution failed for task ':app:compileDebugKotlin'.
> Compilation error. See log for more details
查看gradle console：
Parallel execution with configuration on demand is an incubating feature.
app: 'androidProcessor' dependencies won't be recognized as kapt annotation processors.
Please change the configuration name to 'kapt' for these artifacts:'com.google.dagger:dagger-compiler:2.10'
and apply the kapt plugin: "apply plugin: 'kotlin-kapt'".
解决：
将
apply plugin: 'com.android.application'apply plugin: 'kotlin-android'apply plugin: 'kotlin-android-extensions'android {compileSdkVersion 26defaultConfig {applicationId "com.xq.mykotlin"minSdkVersion 14targetSdkVersion 26versionCode 1versionName "1.0"testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"}buildTypes {release {minifyEnabled falseproguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'}}configurations.all {resolutionStrategy.force 'com.android.support:support-annotations:26.1.0'}
}dependencies {implementation fileTree(dir: 'libs', include: ['*.jar'])implementation"org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"implementation 'com.android.support:appcompat-v7:26.1.0'implementation 'com.android.support.constraint:constraint-layout:1.1.3'testImplementation 'junit:junit:4.12'androidTestImplementation 'com.android.support.test:runner:1.0.2'androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'implementation 'com.google.dagger:dagger:2.17'annotationProcessor 'com.google.dagger:dagger-compiler:2.17' //java中用annotationProcessor
}
改成：
apply plugin: 'com.android.application'apply plugin: 'kotlin-android'apply plugin: 'kotlin-android-extensions'apply plugin: 'kotlin-kapt' //添加android {compileSdkVersion 26defaultConfig {applicationId "com.xq.mydagger2"minSdkVersion 14targetSdkVersion 26versionCode 1versionName "1.0"testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"}buildTypes {release {minifyEnabled falseproguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'}}configurations.all {resolutionStrategy.force 'com.android.support:support-annotations:26.1.0'}
}dependencies {implementation fileTree(dir: 'libs', include: ['*.jar'])implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"implementation 'com.android.support:appcompat-v7:26.1.0'implementation 'com.android.support.constraint:constraint-layout:1.1.3'testImplementation 'junit:junit:4.12'androidTestImplementation 'com.android.support.test:runner:1.0.2'androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'implementation 'com.google.dagger:dagger:2.17'
// annotationProcessor 'com.google.dagger:dagger-compiler:2.17'kapt 'com.google.dagger:dagger-compiler:2.17' //将annotationProcessor改成kapt//kotlin用kapt
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