我按照https://developer.android.com/guide/app-bundle/build的说明构建了新的Android应用包 - 但是我从Play商店安装时遇到错误。
2018-06-04 11:06:09.397 10595-10595/? E/AndroidRuntime: Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: io.org.app.ui.loading.LoadingFragment
at androidx.navigation.fragment.b$a.a(FragmentNavigator.java:219)
at androidx.navigation.fragment.b$a.a(FragmentNavigator.java:202)
at androidx.navigation.k.a(NavInflater.java:140)
at androidx.navigation.k.a(NavInflater.java:169)
at androidx.navigation.k.a(NavInflater.java:120)
... 36 more
Caused by: java.lang.ClassNotFoundException: io.org.app.ui.loading.LoadingFragment
at java.lang.Class.classForName(Native Method)
at java.lang.Class.forName(Class.java:453)
at androidx.navigation.fragment.b$a.a(FragmentNavigator.java:215)
... 40 more
Caused by: java.lang.ClassNotFoundException: Didn't find class "io.org.app.ui.loading.LoadingFragment" on path: DexPathList[[zip file "/system/framework/org.apache.http.legacy.boot.jar", zip file "/data/app/io.org.app-2KUWPMF_QJ31_iG8kGu1rA==/base.apk", zip file "/data/app/io.org.app-2KUWPMF_QJ31_iG8kGu1rA==/split_config.arm64_v8a.apk", zip file "/data/app/io.org.app-2KUWPMF_QJ31_iG8kGu1rA==/split_config.en.apk", zip file "/data/app/io.prg.app-2KUWPMF_QJ31_iG8kGu1rA==/split_config.iw.apk", zip file "/data/app/io.org.app-2KUWPMF_QJ31_iG8kGu1rA==/split_config.xxhdpi.apk"],nativeLibraryDirectories=[/data/app/io.org.app-2KUWPMF_QJ31_iG8kGu1rA==/lib/arm64, /data/app/io.org.app-2KUWPMF_QJ31_iG8kGu1rA==/base.apk!/lib/arm64-v8a, /data/app/io.org.app-2KUWPMF_QJ31_iG8kGu1rA==/split_config.arm64_v8a.apk!/lib/arm64-v8a, /data/app/io.org.app-2KUWPMF_QJ31_iG8kGu1rA==/split_config.en.apk!/lib/arm64-v8a, /data/app/io.org.app-2KUWPMF_QJ31_iG8kGu1rA==/split_config.iw.apk!/lib/arm64-v8a, /data/app/io.org.app-2KUWPMF_QJ31_iG8kGu1rA==/split_config.xxhdpi.apk!/lib/arm64-v8a, /system/lib64, /vendor/lib64]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:125)
at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
... 43 more
Suppressed: java.io.IOException: No original dex files found for dex location /data/app/io.org.app-2KUWPMF_QJ31_iG8kGu1rA==/split_config.arm64_v8a.apk
at dalvik.system.DexFile.openDexFileNative(Native Method)
at dalvik.system.DexFile.openDexFile(DexFile.java:354)
at dalvik.system.DexFile.<init>(DexFile.java:101)
at dalvik.system.DexFile.<init>(DexFile.java:75)
at dalvik.system.DexPathList.loadDexFile(DexPathList.java:374)
at dalvik.system.DexPathList.makeDexElements(DexPathList.java:337)
at dalvik.system.DexPathList.<init>(DexPathList.java:157)
at dalvik.system.BaseDexClassLoader.<init>(BaseDexClassLoader.java:65)
at dalvik.system.PathClassLoader.<init>(PathClassLoader.java:64)
at com.android.internal.os.ClassLoaderFactory.createClassLoader(ClassLoaderFactory.java:73)
at com.android.internal.os.ClassLoaderFactory.createClassLoader(ClassLoaderFactory.java:88)
at android.app.ApplicationLoaders.getClassLoader(ApplicationLoaders.java:72)
at android.app.ApplicationLoaders.getClassLoader(ApplicationLoaders.java:38)
at android.app.LoadedApk.createOrUpdateClassLoaderLocked(LoadedApk.java:715)
at android.app.LoadedApk.getClassLoader(LoadedApk.java:750)
at android.app.LoadedApk.getResources(LoadedApk.java:972)
at android.app.ContextImpl.createAppContext(ContextImpl.java:2329)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5743)
at android.app.ActivityThread.access$1000(ActivityThread.java:198)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1637)
... 6 more
Suppressed: java.io.IOException: No original dex files found for dex location /data/app/io.org.app-2KUWPMF_QJ31_iG8kGu1rA==/split_config.en.apk
at dalvik.system.DexFile.openDexFileNative(Native Method)
at dalvik.system.DexFile.openDexFile(DexFile.java:354)
at dalvik.system.DexFile.<init>(DexFile.java:101)
at dalvik.system.DexFile.<init>(DexFile.java:75)
at dalvik.system.DexPathList.loadDexFile(DexPathList.java:374)
我在构建中包含了以下内容：
android {
buildTypes {
release {
multiDexKeepProguard file ('multidex-keep.pro')
}
}
}
multidex-keep.pro：
-keep class io.org.app.ui.main.** { *; }
-keep class io.org.app.ui.loading.** { *; }
答案 0 :(得分：2)
看起来类io.org.app.ui.loading.LoadingFragment是通过反射加载的，但是你的proguard文件不会阻止该类被混淆，所以它已被重命名，这解释了为什么找不到它。
我想你在本地部署应用程序的发布版本时会遇到同样的错误。
尝试调整proguard文件以防止重命名该类。
答案 1 :(得分：1)
我有同样的问题。 检查是否添加：
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-kapt'
在您的 build.gradle 文件中。
答案 2 :(得分：0)
下面我列出了可能的解决方案， 一步一步尝试此步骤：
转到调试块中的build.gradle（Module：app）并禁用minifyEnabled：
buildTypes {
debug {
minifyEnabled false
}
}
就我而言，我包括另一种布局
<include layout="@layout/attached_layout" />
到我活动的布局，就解决了。
android {
...
...
...
dataBinding {
enabled = true
}
}
例如：
<activity android:name="com.myExactPackageName.MyActivity"
<com.myExactPackageName.MyCustomView
android:id="@+id/myview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp" />
dexOptions {
preDexLibraries false
}
转到文件->设置->构建，执行，部署->即时运行->取消选中即时运行复选框
这在build.gradle（Module：app）
中android {
defaultConfig {
...
multiDexEnabled true
}
dependencies {
...
implementation 'androidx.multidex:multidex:2.0.1'
}
}
如果您使用的是应用程序类，则必须使用MultiDexApplication而不是Application进行扩展，并将其添加到 AndroidManifest.xml
<application
android:name="com.myPackageName.MyApplication"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name">
否则从库中添加MultiDexApplication类路径作为名称
<application
android:name="androidx.multidex.MultiDexApplication"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name">
答案 3 :(得分：0)
解决了。以上都不是。导致它是editorOptions错误。
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}