Wie zu beheben: java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory

Question

Ich habe ein Projekt, das ein Bibliotheksprojekt enthält. Mein Hauptprojekt hat die folgenden Abhängigkeiten:

dependencies { 
    compile fileTree(include: ['*.jar'], dir: 'libs') 
    compile project(':foundationclasses') 
    compile 'com.android.support:multidex:' 
    testCompile 'junit:junit:4.12' 
    compile 'com.android.support:appcompat-v7:23.3.0' 

    //NEUROTECHNOLOGY 
    compile files('libs/neurotec-media-android.jar') 
    compile files('libs/neurotec-media-processing-android.jar') 
    compile files('libs/neurotec-licensing-gui-android.jar') 
    compile files('libs/neurotec-licensing-android.jar') 
    compile files('libs/neurotec-gui-android.jar') 
    compile files('libs/neurotec-devices-android.jar') 
    compile files('libs/neurotec-core-android.jar') 
    compile files('libs/neurotec-cluster-android.jar') 
    compile files('libs/neurotec-biometrics-gui-android.jar') 
    compile files('libs/neurotec-biometrics-client-android.jar') 
    compile files('libs/neurotec-biometrics-android.jar') 
    compile files('libs/jna.jar') 
    compile files('libs/acra.jar') 

    //CREDENCE 
    compile files('libs/CredenceDeviceLib.jar') 

    //OTHER 
    compile 'cn.pedant.sweetalert:library:1.3' 
    compile 'com.github.fengdai:alertdialogpro-theme-material:0.2.6' 
    compile 'joda-time:joda-time:2.9.3' 
    compile 'com.wang.avi:library:1.0.2' 
    compile group: 'org.slf4j', name: 'slf4j-api', version: '1.7.12' 
} 

Meine Bibliothek project`s Abhängigkeiten:

dependencies { 
    compile fileTree(include: ['*.jar'], dir: 'libs') 
    compile 'com.google.guava:guava:18.0' 
    compile 'com.github.tony19:logback-android-classic:1.1.1-4' 
    compile group: 'org.slf4j', name: 'slf4j-api', version: '1.7.12' 
} 

gradlew App: Abhängigkeiten ergibt folgendes Ergebnis:

compile - Classpath for compiling the main sources. 
+--- project :foundationclasses           
| +--- com.google.guava:guava:18.0 
| +--- com.github.tony19:logback-android-classic:1.1.1-4 
| | +--- com.github.tony19:apktool-lib:1.4.4-3 
| | | \--- com.google.android:android:2.1_r1 
| | |   +--- commons-logging:commons-logging:1.1.1 
| | |   +--- org.apache.httpcomponents:httpclient:4.0.1 
| | |   | +--- org.apache.httpcomponents:httpcore:4.0.1 
| | |   | +--- commons-logging:commons-logging:1.1.1 
| | |   | \--- commons-codec:commons-codec:1.3 
| | |   +--- org.khronos:opengl-api:gl1.1-android-2.1_r1 
| | |   +--- xerces:xmlParserAPIs:2.6.2 
| | |   \--- xpp3:xpp3:1.1.4c 
| | \--- com.github.tony19:logback-android-core:1.1.1-4 
| \--- org.slf4j:slf4j-api:1.7.12 
+--- com.android.support:multidex: FAILED 
+--- com.android.support:appcompat-v7:23.3.0 
| +--- com.android.support:support-vector-drawable:23.3.0 
| | \--- com.android.support:support-v4:23.3.0 
| |   \--- com.android.support:support-annotations:23.3.0 
| +--- com.android.support:animated-vector-drawable:23.3.0 
| | \--- com.android.support:support-vector-drawable:23.3.0 (*) 
| \--- com.android.support:support-v4:23.3.0 (*) 
+--- cn.pedant.sweetalert:library:1.3 
| \--- com.pnikosis:materialish-progress:1.0 
|   \--- com.android.support:appcompat-v7:21.0.0 -> 23.3.0 (*) 
+--- com.github.fengdai:alertdialogpro-theme-material:0.2.6 
| +--- com.nineoldandroids:library:2.4.0 
| \--- com.github.fengdai:alertdialogpro-core:0.2.6 
|   \--- com.android.support:appcompat-v7:23.1.1 -> 23.3.0 (*) 
+--- joda-time:joda-time:2.9.3 
+--- com.wang.avi:library:1.0.2 
| +--- com.android.support:appcompat-v7:22.2.0 -> 23.3.0 (*) 
| \--- com.nineoldandroids:library:2.4.0 
\--- org.slf4j:slf4j-api:1.7.12 

Fehlerprotokoll:

java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory 
at nl.hsb.abis.fsm.ActivityController.<clinit>(ActivityController.java:33) 
at nl.hsb.finalapplication.MainActivity.onCreate(MainActivity.java:21) 
at android.app.Activity.performCreate(Activity.java:5133) 
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2293) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2389) 
at android.app.ActivityThread.access$600(ActivityThread.java:153) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1269) 
at android.os.Handler.dispatchMessage(Handler.java:99) 
at android.os.Looper.loop(Looper.java:137) 
at android.app.ActivityThread.main(ActivityThread.java:5289) 
at java.lang.reflect.Method.invokeNative(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:525) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555) 
at dalvik.system.NativeStart.main(Native Method) 

Ich habe alles versucht, aber ich kann diesen Fehler nicht loswerden, jeder Rat würde sehr geschätzt werden!

Answer 1

Sie enthielten die API slf4j, aber keine Implementierung. Je nachdem, welchen Logger Sie verwenden möchten, stehen verschiedene Implementierungsmodule zur Verfügung.

Zum Beispiel könnten Sie eine Abhängigkeit für die einfachen Logger hinzufügen:

dependencies { 
    ... 
    runtime group: 'org.slf4j', name: 'slf4j-simple', version: '1.7.12' 
    ... 
} 

Answer 2

Die {org.slf4j.LoggerFactory} Klasse Schiffe mit slf4j-api.jar. Aus irgendeinem mysteriösen Grund ist slf4j-api.jar zur Laufzeit nicht Teil Ihrer Anwendung.