"ClassNotFoundException:在API 19上没有在路径DexPathList上找到类"

Question

我正在制作一款具有针对性的SDK版本24和最低版本19的Android应用程序.它在较高的API级别上工作正常,但是当尝试在API级别19上运行它时,它崩溃并出现以下错误:

java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{se.android/se.android.SplashScreenActivity}: java.lang.ClassNotFoundException: Didn't find class "se.android.SplashScreenActivity" on path: DexPathList[[zip file "/data/app/se.android-2.apk"],nativeLibraryDirectories=[/data/app-lib/se.android-2, /vendor/lib, /system/lib]]
                  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2121)
                  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
                  at android.app.ActivityThread.access$800(ActivityThread.java:135)
                  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
                  at android.os.Handler.dispatchMessage(Handler.java:102)
                  at android.os.Looper.loop(Looper.java:136)
                  at android.app.ActivityThread.main(ActivityThread.java:5017)
                  at java.lang.reflect.Method.invokeNative(Native Method)
                  at java.lang.reflect.Method.invoke(Method.java:515)
                  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
                  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
                  at dalvik.system.NativeStart.main(Native Method)
               Caused by: java.lang.ClassNotFoundException: Didn't find class "se.android.SplashScreenActivity" on path: DexPathList[[zip file "/data/app/se.android-2.apk"],nativeLibraryDirectories=[/data/app-lib/se.android-2, /vendor/lib, /system/lib]]
                  at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
                  at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
                  at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
                  at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
                  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2112)
                  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) 
                  at android.app.ActivityThread.access$800(ActivityThread.java:135) 
                  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 
                  at android.os.Handler.dispatchMessage(Handler.java:102) 
                  at android.os.Looper.loop(Looper.java:136) 
                  at android.app.ActivityThread.main(ActivityThread.java:5017) 
                  at java.lang.reflect.Method.invokeNative(Native Method) 
                  at java.lang.reflect.Method.invoke(Method.java:515) 
                  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 
                  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 
                  at dalvik.system.NativeStart.main(Native Method) 

相关活动在清单文件中设置:

<activity
        android:name=".SplashScreenActivity"
        android:label="@string/app_name"
        android:screenOrientation="portrait"
        android:theme="@style/Theme.AppCompat.NoActionBar">

        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>

</activity>

我已经尝试更改应用程序启动的哪个活动,但这也不起作用.在gradle设置中启用Multidex.

我已经尝试清理它并从存储库重新加载它但它不起作用.

Answer 1

我终于设法解决了这个问题.事实证明,虽然我在gradle设置中启用了MultiDex

defaultConfig {
   multiDexEnabled true
   ...
}

并导入了MultiDex库

depenencies {
   ...
   compile 'com.android.support:multidex:1.0.1'
   ...
}

我忘了在AndroidManifest.xml中添加它

<application
   ...
   android:name="android.support.multidex.MultiDexApplication"
   ...
>
   ...
</application>

添加该部分后,它现在可以在API级别19上运行.