Issue
So, I know that in Java we use this to launch new Activity
Intent intent = new Intent(this, SomeActivity.class);
startActivity(intent);
But I'm writting a project using Kotlin, so in Kotlin it's like
val intent = Intent(this,SomeActivity::class.java)
startActivity(intent)
But it crashes with problem
FATAL EXCEPTION: main
Process: com.pashabred.passlin, PID: 15243
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.pashabred.passlin/com.pashabred.passlin.Enterring}: kotlin.KotlinNullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: kotlin.KotlinNullPointerException
at com.pashabred.passlin.Enterring.onCreate(Enterring.kt:17)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Solution
Ensure you have (question mark):
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
}
Instead:
override fun onCreate(savedInstanceState: Bundle) {
super.onCreate(savedInstanceState)
}
Answered By - klimat
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