android - java.lang.ClassNotFoundException in dalvik.system.BaseDexClassLoader.findClass

Question

java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.me.hexavoidaa/com.me.hexavoidaa.PTPlayer}: java.lang.ClassNotFoundException: Didn't find class "com.me.hexavoidaa.PTPlayer" on path: DexPathList[[zip file "/data/app/com.me.hexavoidaa-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.me.hexavoidaa-1, /vendor/lib, /system/lib]]
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2208)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2340)
    at android.app.ActivityThread.access$800(ActivityThread.java:157)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1247)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:157)
    at android.app.ActivityThread.main(ActivityThread.java:5293)
    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:1265)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
    at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.me.hexavoidaa.PTPlayer" on path: DexPathList[[zip file "/data/app/com.me.hexavoidaa-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.me.hexavoidaa-1, /vendor/lib, /system/lib]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:67)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
    at android.app.Instrumentation.newActivity(Instrumentation.java:1079)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2199)
    ... 11 more

Answer 1

add this to gradle.build:

defaultConfig {
...
minSdkVersion 14
targetSdkVersion // your version 
...

// Enabling multidex support.
multiDexEnabled true
}

dependencies {
  compile 'com.android.support:multidex:1.0.0'
}

• follow android developers page's instruction: https://developer.android.com/studio/build/multidex.html