Kotlin: I have a problem while switching from one Activity to another? - kotlin

Question

I have a problem when I want to switch between two activities.
This is my code on the first activity. I want to switch to the CatDoorActivity.
modifier = Modifier.clickable {
val intent = Intent(this, CatDoorActivity::class.java)
intent.putExtra("UUID", deviceUUID).putExtra("TITLE", deviceTitle)
this.startActivity(intent)
}
My Problem is this exception after running that code:
android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.mycatbellproject/com.example.mycatbellproject.CatDoorActivity}; have you declared this activity in your AndroidManifest.xml?
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:2065)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1727)
at android.app.Activity.startActivityForResult(Activity.java:5314)
at androidx.activity.ComponentActivity.startActivityForResult(ComponentActivity.java:705)
at android.app.Activity.startActivityForResult(Activity.java:5272)
at androidx.activity.ComponentActivity.startActivityForResult(ComponentActivity.java:686)
at android.app.Activity.startActivity(Activity.java:5658)
at android.app.Activity.startActivity(Activity.java:5611)
at com.example.mycatbellproject.MainActivity$CardItem$1.invoke(MainActivity.kt:255)
at com.example.mycatbellproject.MainActivity$CardItem$1.invoke(MainActivity.kt:254)
at androidx.compose.foundation.ClickableKt$clickable$4$gesture$1$2.invoke-k-4lQ0M(Clickable.kt:153)
at androidx.compose.foundation.ClickableKt$clickable$4$gesture$1$2.invoke(Clickable.kt:142)
at androidx.compose.foundation.gestures.TapGestureDetectorKt$detectTapAndPress$2$1$1.invokeSuspend(TapGestureDetector.kt:223)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
at kotlinx.coroutines.DispatchedTaskKt.resume(DispatchedTask.kt:178)
at kotlinx.coroutines.DispatchedTaskKt.dispatch(DispatchedTask.kt:166)
at kotlinx.coroutines.CancellableContinuationImpl.dispatchResume(CancellableContinuationImpl.kt:397)
at kotlinx.coroutines.CancellableContinuationImpl.resumeImpl(CancellableContinuationImpl.kt:431)
at kotlinx.coroutines.CancellableContinuationImpl.resumeImpl$default(CancellableContinuationImpl.kt:420)
at kotlinx.coroutines.CancellableContinuationImpl.resumeWith(CancellableContinuationImpl.kt:328)
at androidx.compose.ui.input.pointer.SuspendingPointerInputFilter$PointerEventHandlerCoroutine.offerPointerEvent(SuspendingPointerInputFilter.kt:511)
at androidx.compose.ui.input.pointer.SuspendingPointerInputFilter.dispatchPointerEvent(SuspendingPointerInputFilter.kt:406)
at androidx.compose.ui.input.pointer.SuspendingPointerInputFilter.onPointerEvent-H0pRuoY(SuspendingPointerInputFilter.kt:419)
at androidx.compose.ui.input.pointer.Node.dispatchMainEventPass(HitPathTracker.kt:310)
at androidx.compose.ui.input.pointer.Node.dispatchMainEventPass(HitPathTracker.kt:297)
at androidx.compose.ui.input.pointer.Node.dispatchMainEventPass(HitPathTracker.kt:297)
at androidx.compose.ui.input.pointer.Node.dispatchMainEventPass(HitPathTracker.kt:297)
at androidx.compose.ui.input.pointer.Node.dispatchMainEventPass(HitPathTracker.kt:297)
at androidx.compose.ui.input.pointer.NodeParent.dispatchMainEventPass(HitPathTracker.kt:179)
at androidx.compose.ui.input.pointer.HitPathTracker.dispatchChanges(HitPathTracker.kt:98)
at androidx.compose.ui.input.pointer.PointerInputEventProcessor.process-BIzXfog(PointerInputEventProcessor.kt:80)
at androidx.compose.ui.platform.AndroidComposeView.sendMotionEvent-8iAsVTc(AndroidComposeView.android.kt:1205)
at androidx.compose.ui.platform.AndroidComposeView.handleMotionEvent-8iAsVTc(AndroidComposeView.android.kt:1155)
at androidx.compose.ui.platform.AndroidComposeView.dispatchTouchEvent(AndroidComposeView.android.kt:1095)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3118)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2799)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3118)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2799)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3118)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2799)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3118)
E/AndroidRuntime: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2799)
at com.android.internal.policy.DecorView.superDispatchTouchEvent(DecorView.java:488)
at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1871)
at android.app.Activity.dispatchTouchEvent(Activity.java:4125)
at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:446)
at android.view.View.dispatchPointerEvent(View.java:14568)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:6016)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:5819)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5310)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5367)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5333)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5485)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5341)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:5542)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5314)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5367)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5333)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5341)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5314)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:8080)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:8031)
at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:7992)
at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:8203)
at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:220)
at android.os.MessageQueue.nativePollOnce(Native Method)
at android.os.MessageQueue.next(MessageQueue.java:335)
at android.os.Looper.loop(Looper.java:183)
at android.app.ActivityThread.main(ActivityThread.java:7656)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
Suppressed: kotlinx.coroutines.DiagnosticCoroutineContextException: [androidx.compose.runtime.BroadcastFrameClock#f19bf6c, StandaloneCoroutine{Cancelling}#fd19935, AndroidUiDispatcher#cea91ca]
I/Process: Sending signal. PID: 7109 SIG: 9
I have added the activity to the AndroidManifest.xml:
<activity
android:name=".CatDoorActivity"
android:configChanges="orientation"
android:exported="false"
android:theme="#style/Theme.MyCatbellProject"/>
The bottom of the exception says something about coroutines. I use them in for my room database. Do I get a problem intending a new activity and switching to it while using coroutines in my room database in the first activity? I use the room database viewmodel in my first activity but I dont use that on my second activity.
That is my second activity so far:
class CatDoorActivity : ComponentActivity(){
private var uuid: String = ""
private var title: String = ""
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
if(intent.extras != null) {
uuid = intent.extras!!.get("UUID") as String
title = intent.extras!!.get("TITLE") as String
}
setContent {
MyCatbellProjectTheme {
// A surface container using the 'background' color from the theme
Surface(
modifier = Modifier.fillMaxSize(),
color = MaterialTheme.colors.background
) {
MenuScreenUI()
}
}
}
}
...
The Repository of my room db uses the coroutines:
class DeviceRepository(application: Application) {
val searchResults = MutableLiveData<List<Device>>()
private var deviceDao: DeviceDao?
private val coroutineScope = CoroutineScope(Dispatchers.Main)
val allDevices: LiveData<List<Device>>?
fun insertDevice(newDevice: Device) {
coroutineScope.launch(Dispatchers.IO) {
asyncInsert(newDevice)
}
}
private suspend fun asyncInsert(device: Device) {
deviceDao?.addDevice(device)
}
fun deleteDevice(id: Int) {
coroutineScope.launch(Dispatchers.IO) {
asyncDelete(id)
}
}
private suspend fun asyncDelete(id: Int) {
deviceDao?.deleteDevice(id)
}
fun findDevice(name: String) {
coroutineScope.launch(Dispatchers.Main) {
searchResults.value = asyncFind(name).await()
}
}
private suspend fun asyncFind(name: String): Deferred<List<Device>?> =
coroutineScope.async(Dispatchers.IO) {
return#async deviceDao?.findDevice(name)
}
init {
val db: DeviceRoomDatabase? = DeviceRoomDatabase.getDatabse(application)
deviceDao = db?.deviceDao()
allDevices = deviceDao?.getAllDevices()
}
}