【发布时间】：2020-01-07 12:09:10
【问题描述】：
我在我的项目中使用 androidx，但是当我在 android 4.3 上运行它时，出现以下错误：
Could not find class 'androidx.work.impl.background.systemjob.SystemJobService', referenced from method androidx.work.impl.Schedulers.createBestAvailableBackgroundScheduler
Could not find class 'androidx.work.impl.constraints.trackers.NetworkStateTracker$NetworkStateCallback', referenced from method androidx.work.impl.constraints.trackers.NetworkStateTracker.<init>
Could not find class 'java.lang.invoke.MethodHandles$Lookup', referenced from method retrofit2.Platform.invokeDefaultMethod
这是我的gradle：
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: "kotlin-kapt"
android {
compileSdkVersion 29
buildToolsVersion '29.0.2'
defaultConfig {
applicationId "xxx.xxx"
minSdkVersion 17
targetSdkVersion 29
renderscriptTargetApi 17
renderscriptSupportModeEnabled true
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
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"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.core:core-ktx:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'androidx.cardview:cardview:1.0.0'
implementation 'androidx.recyclerview:recyclerview:1.1.0'
testImplementation 'junit:junit:4.13'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
implementation 'com.squareup.retrofit2:retrofit:2.7.1'
implementation 'com.squareup.retrofit2:converter-gson:2.7.1'
implementation 'com.jakewharton:butterknife:10.2.1'
implementation 'com.squareup.okhttp3:okhttp:4.3.0'
kapt 'com.jakewharton:butterknife-compiler:10.2.1'
implementation 'com.google.dagger:dagger:2.25.4'
implementation 'com.google.dagger:dagger-android-support:2.25.4'
implementation 'com.google.dagger:dagger-android:2.25.4'
kapt 'com.google.dagger:dagger-compiler:2.25.4'
kapt 'com.google.dagger:dagger-android-processor:2.25.4'
implementation 'androidx.room:room-runtime:2.2.3'
kapt 'androidx.room:room-compiler:2.2.3'
kapt "android.arch.persistence.room:compiler:2.2.2"
implementation 'androidx.room:room-ktx:2.2.3'
implementation 'androidx.room:room-rxjava2:2.2.3'
implementation 'androidx.room:room-guava:2.2.3'
implementation 'com.squareup.retrofit2:converter-scalars:2.7.1'
implementation 'io.reactivex.rxjava2:rxjava:2.2.10'
implementation 'io.reactivex.rxjava2:rxandroid:2.1.1'
implementation 'com.jakewharton.retrofit:retrofit2-rxjava2-adapter:1.0.0'
implementation 'com.netflix.rxjava:rxjava-android:0.20.7'
def lifecycle_version = "2.1.0"
implementation "androidx.lifecycle:lifecycle-extensions:$lifecycle_version"
implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0-rc03"
implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.2.0-rc03"
implementation "androidx.work:work-runtime-ktx:2.2.0"
implementation "androidx.lifecycle:lifecycle-common-java8:$lifecycle_version"
implementation "androidx.lifecycle:lifecycle-reactivestreams-ktx:$lifecycle_version"
}
这是我的activity：
class CoursesActivity : DaggerAppCompatActivity()...{
override fun onCreate(savedInstanceState: Bundle?) {
super<DaggerAppCompatActivity>.onCreate(savedInstanceState)
lifecycle.addObserver(this)
setContentView(R.layout.activity_courses)
}
}
【问题讨论】：
标签： android retrofit okhttp androidx dagger