I have the following Delegate...
fun integerPref(initialValue: Int) = object : ObservableProperty<Int>(initialValue) {
override fun afterChange(property: KProperty<*>, oldValue: Int, newValue: Int) {
getSharedPreference(INTEGER_PREF, EasyInjection.mode)
.edit()
.putInt(property.toString(), newValue)
.apply()
}
override fun getValue(thisRef: Any?, property: KProperty<*>): Int {
return getSharedPreference(INTEGER_PREF, EasyInjection.mode)
.getInt(property.toString(), initialValue)
}
}
This delegate aim to handling share preference. The problem happen when my application become MultiDex. When I use it like below code in activity, application crash.
class IntroduceActivity : BaseActivity() {
private val CURRENT_VERSION = 1
private val introVersion by integerPref()
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_introduce)
if (introVersion == CURRENT_VERSION) {
finish()
}
}
}
But, if I change the code to this one. Application not crash
class IntroduceActivity : BaseActivity() {
private val CURRENT_VERSION = 1
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_introduce)
var introVersion by integerPref()
if (introVersion == CURRENT_VERSION) {
finish()
}
}
}
I have read this document and it have some notice..
https://developer.android.com/studio/build/multidex.html
Caution: Do not execute MultiDex.install() or any other code through reflection or JNI before MultiDex.install() is complete. Multidex tracing will not follow those calls, causing ClassNotFoundException or verify errors due to a bad class partition between DEX files.
In conclusion, I want to know what happen in this scenario.
- application crash happen on Android below 21
- kotlin delegate use reflection
- why change from field variable to local variable is solved problem ?
- Logcat is not help
Logcat
FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.apg.mobile.som.uat/com.apg.mobile.som.activity.MainActivity}: java.lang.TypeNotPresentException: Type android/support/v4/app/ActivityCompatApi23$SharedElementCallbackImpl not present
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
at android.app.ActivityThread.access$600(ActivityThread.java:141)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5041)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.TypeNotPresentException: Type android/support/v4/app/ActivityCompatApi23$SharedElementCallbackImpl not present
at java.lang.Class.getDeclaredClasses(Native Method)
at java.lang.Class.getDeclaredClasses(Class.java:534)
at kotlin.reflect.jvm.internal.impl.load.java.structure.reflect.ReflectJavaClass.getInnerClassNames(ReflectJavaClass.kt:35)
at kotlin.reflect.jvm.internal.impl.load.java.structure.reflect.ReflectJavaClass.getInnerClassNames(ReflectJavaClass.kt:27)
at kotlin.reflect.jvm.internal.impl.load.java.lazy.descriptors.LazyJavaClassMemberScope$nestedClassIndex$1.invoke(LazyJavaClassMemberScope.kt:617)
at kotlin.reflect.jvm.internal.impl.load.java.lazy.descriptors.LazyJavaClassMemberScope$nestedClassIndex$1.invoke(LazyJavaClassMemberScope.kt:64)
at kotlin.reflect.jvm.internal.impl.storage.LockBasedStorageManager$LockBasedLazyValue.invoke(LockBasedStorageManager.java:323)
at kotlin.reflect.jvm.internal.impl.storage.LockBasedStorageManager$LockBasedNotNullLazyValue.invoke(LockBasedStorageManager.java:370)
at kotlin.reflect.jvm.internal.impl.load.java.lazy.descriptors.LazyJavaClassMemberScope$nestedClasses$1.invoke(LazyJavaClassMemberScope.kt:626)
at kotlin.reflect.jvm.internal.impl.load.java.lazy.descriptors.LazyJavaClassMemberScope$nestedClasses$1.invoke(LazyJavaClassMemberScope.kt:64)
at kotlin.reflect.jvm.internal.impl.storage.LockBasedStorageManager$MapBasedMemoizedFunction.invoke(LockBasedStorageManager.java:408)
at kotlin.reflect.jvm.internal.impl.load.java.lazy.descriptors.LazyJavaClassMemberScope.getContributedClassifier(LazyJavaClassMemberScope.kt:651)
at kotlin.reflect.jvm.internal.impl.resolve.scopes.InnerClassesScopeWrapper.getContributedClassifier(InnerClassesScopeWrapper.kt:29)
at kotlin.reflect.jvm.internal.impl.resolve.jvm.JavaDescriptorResolver.resolveClass(JavaDescriptorResolver.kt:38)
at kotlin.reflect.jvm.internal.impl.load.java.lazy.SingleModuleClassResolver.resolveClass(ModuleClassResolver.kt:29)
at kotlin.reflect.jvm.internal.impl.load.java.lazy.types.JavaTypeResolver.computeTypeConstructor(JavaTypeResolver.kt:132)
at kotlin.reflect.jvm.internal.impl.load.java.lazy.types.JavaTypeResolver.computeSimpleJavaClassifierType(JavaTypeResolver.kt:114)
at kotlin.reflect.jvm.internal.impl.load.java.lazy.types.JavaTypeResolver.transformJavaClassifierType(JavaTypeResolver.kt:90)
at kotlin.reflect.jvm.internal.impl.load.java.lazy.types.JavaTypeResolver.transformJavaType(JavaTypeResolver.kt:52)
at kotlin.reflect.jvm.internal.impl.load.java.lazy.descriptors.LazyJavaClassDescriptor$LazyJavaClassTypeConstructor.computeSupertypes(LazyJavaClassDescriptor.kt:178)
at kotlin.reflect.jvm.internal.impl.types.AbstractTypeConstructor$supertypes$1.invoke(AbstractTypeConstructor.kt:35)
at kotlin.reflect.jvm.internal.impl.types.AbstractTypeConstructor$supertypes$1.invoke(AbstractTypeConstructor.kt:22)
at kotlin.reflect.jvm.internal.impl.storage.LockBasedStorageManager$LockBasedLazyValue.invoke(LockBasedStorageManager.java:
