Android 无法在应用程序中引用库模块的活动

我正在使用Android Studio 2.3.3，带有

请参阅我的示例项目。在这个项目中，有两个示例模块（作为Android Studio名称），app和library

库具有

com.example.test.myapplication.MainActivity

类，它在应用程序的

AndroidManifest.xml

中引用。应用程序编译良好，但在启动时崩溃：

10-31 22:20:55.031 30084-30084/? I/zygote64: Late-enabling -Xcheck:jni
10-31 22:20:55.312 30084-30084/? I/InstantRun: starting instant run server: is main process
10-31 22:20:55.325 30084-30084/? D/AndroidRuntime: Shutting down VM
10-31 22:20:55.327 30084-30084/? E/AndroidRuntime: FATAL EXCEPTION: main
                                                   Process: com.example.test.myapplication, PID: 30084
                                                   java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.test.myapplication/com.example.test.myapplication.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.example.test.myapplication.MainActivity" on path: DexPathList[[zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/base.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_dependencies_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_0_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_1_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_2_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_3_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_4_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_5_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_6_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_7_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_8_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/lib/arm64, /system/lib64, /vendor/lib64]]
                                                       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2718)
                                                       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
                                                       at android.app.ActivityThread.-wrap11(Unknown Source:0)
                                                       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
                                                       at android.os.Handler.dispatchMessage(Handler.java:105)
                                                       at android.os.Looper.loop(Looper.java:164)
                                                       at android.app.ActivityThread.main(ActivityThread.java:6541)
                                                       at java.lang.reflect.Method.invoke(Native Method)
                                                       at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
                                                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
                                                    Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.test.myapplication.MainActivity" on path: DexPathList[[zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/base.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_dependencies_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_0_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_1_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_2_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_3_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_4_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_5_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_6_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_7_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_8_apk.apk", zip file "/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.example.test.myapplication-dsBQ8b1LFh9WtKzvdfrLYg==/lib/arm64, /system/lib64, /vendor/lib64]]
                                                       at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:93)
                                                       at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
10-31 22:20:55.328 30084-30084/? E/AndroidRuntime:     at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
                                                       at android.app.Instrumentation.newActivity(Instrumentation.java:1173)
                                                       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2708)
                                                        ... 9 more
10-31 22:21:00.439 30084-30093/com.example.test.myapplication I/zygote64: Waiting for a blocking GC ObjectsAllocated
10-31 22:21:00.537 30084-30093/com.example.test.myapplication I/zygote64: WaitForGcToComplete blocked for 97.913ms for cause ObjectsAllocated

根据日志，应用程序工件中似乎不存在

MainActivity

类

事实上，app的

build.gradle

包含以下行：

debugCompile project(path: ':library', configuration: 'debugCompile')
releaseCompile project(path: ':library', configuration: 'releaseCompile')

当我用下面的一行替换这些行时，错误得到修复：

compile project(':library')

---

然而，这不是我想要的。在我的实际项目中，我有各种各样的产品风格和定制的构建类型，所以仅仅是一个

编译

，甚至不是一个解决方案

---

我在示例项目中犯了什么错误？

我自己解决了这个问题

关键点是在库的

build.gradle

中设置

publishNonDefault true

此外，上下文依赖关系应声明为：

debugCompile project(path: ':library', configuration: 'debug')
releaseCompile project(path: ':library', configuration: 'release')

---

固定在。谢谢。

在我的例子中，添加模块gradle实现项目（“：yourLib”）解决了这个问题

“在我的实际项目中有各种产品风格和自定义构建类型，所以仅仅一个编译，甚至3.0中的实现都不能成为解决方案。”是否只有一些构建类型使用这个类？您运行的是哪种生成类型导致了错误？实际上，您的repo中没有任何java文件夹（它应该在src/main/java中）。您的活动在哪里？@Jibbo-See/library/src/main/java/com/example/test/myapplication/@Code-peedient所有构建类型都会导致此错误；在这个示例项目中，包括调试和发布。感谢您回答我的一个问题。请同时回答另一个问题。