我将我的Launcher Activity从Java转换为Kotlin,并且在onCreate()中发生崩溃,我不明白它为什么会崩溃。onCreate从Java转换到Kotlin后崩溃
的Java:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
科特林:
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
调用堆栈:
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.a.b.c/com.a.b.c.Authentication.AuthenticationActivity}: java.lang.IllegalArgumentException: Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull, parameter savedInstanceState
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.IllegalArgumentException: Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull, parameter savedInstanceState
at com.a.b.c.Activity.AppLifecycleTracker.onActivityCreated(AppLifecycleTracker.kt)
at android.app.Application.dispatchActivityCreated(Application.java:195)
at android.app.Activity.onCreate(Activity.java:922)
at android.support.v4.app.FragmentActivity.onCreate(FragmentActivity.java:277)
at android.support.v7.app.AppCompatActivity.onCreate(AppCompatActivity.java:85)
at com.a.b.c.Authentication.AuthenticationActivity.onCreate(AuthenticationActivity.kt:147)
at android.app.Activity.performCreate(Activity.java:6251)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
你的onCreate()还有什么吗? – creativecreatorormaybenot
活动的名称是什么? – Bob
AuthenticationActivity.kt和清单文件有这个条目:<活动 机器人:名字= “Authentication.AuthenticationActivity。” 机器人:configChanges = “keyboardHidden |方向|屏幕尺寸| uiMode” 机器人:screenOrientation = “sensorPortrait” 机器人: theme =“@ style/AppTheme.Simple” tools:ignore =“InnerclassSeparator”> –
Harish