skgmn/cameraxx

Kotlin extensions, BindingAdapters, Composable functions for Android CameraX

Setup

dependencies {
    implementation "com.github.skgmn:cameraxx:0.7.0"
}

Features

CameraXX provides extensions methods for CameraX to use functions with coroutines and flows.

suspend fun Context.getProcessCameraProvider(): ProcessCameraProvider
suspend fun ImageCapture.takePicture(): ImageProxy
suspend fun ImageCapture.takePicture(ImageCapture.OutputFileOptions): ImageCapture.OutputFileResults
fun <T> ImageAnalysis.analyze(suspend (ImageProxy) -> T): Flow<T>
fun ImageProxy.toBitmap(): Bitmap
fun ImageProxy.toByteArray(): ByteArray
fun PreviewView.listenPreviewStreamState(): StateFlow<PreviewView.StreamState?>

• Using with Jetpack Compose
• Using with DataBinding

cameraxx's Issues

syntax in readMe example

In the usage example in the readMe, you use:

val zoomState by remember { ZoomState(pinchZoomEnabled = true) }

I think the intent is:

val zoomState:ZoomState = remember{ ZoomState(true) }

edit: Since a lot of these things, like preview in particular, are nullable and it's useful to change their value later, I'm thinking the original intent was probably:

var zoomState by remember { mutableStateOf(ZoomState(pinchZoomEnabled = true)) }

My only real purpose here is to say that there looks like a versioning issue where either an "=" got switched with a "by" or the mutableStateOf() got dropped.

Include screenshots in readme

Can you include screenshots in readme of how ui looks? also, publish the package to maven central or atleast on jipack.

Failed to call observer method

Hello,

I encountered the following bug. When I use your project in my composable it launches fine for the first time, but when I navigate somewhere (at least 2 views deep) and then come back to view using CameraPreview my app crashes with this:

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: pl.noolstudio.<redactedAppName>, PID: 21901
    java.lang.RuntimeException: Failed to call observer method
        at androidx.lifecycle.ClassesInfoCache$MethodReference.invokeCallback(ClassesInfoCache.java:226)
        at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeMethodsForEvent(ClassesInfoCache.java:194)
        at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeCallbacks(ClassesInfoCache.java:185)
        at androidx.lifecycle.ReflectiveGenericLifecycleObserver.onStateChanged(ReflectiveGenericLifecycleObserver.java:37)
        at androidx.lifecycle.LifecycleRegistry$ObserverWithState.dispatchEvent(LifecycleRegistry.java:354)
        at androidx.lifecycle.LifecycleRegistry.backwardPass(LifecycleRegistry.java:284)
        at androidx.lifecycle.LifecycleRegistry.sync(LifecycleRegistry.java:302)
        at androidx.lifecycle.LifecycleRegistry.moveToState(LifecycleRegistry.java:148)
        at androidx.lifecycle.LifecycleRegistry.setCurrentState(LifecycleRegistry.java:121)
        at androidx.navigation.NavBackStackEntry.updateState(NavBackStackEntry.kt:169)
        at androidx.navigation.NavBackStackEntry.setMaxLifecycle(NavBackStackEntry.kt:150)
        at androidx.navigation.NavController$NavControllerNavigatorState.markTransitionComplete(NavController.kt:312)
        at androidx.navigation.compose.ComposeNavigator.onTransitionComplete$navigation_compose_release(ComposeNavigator.kt:71)
        at androidx.navigation.compose.NavHostKt$NavHost$3$2$1$invoke$$inlined$onDispose$1.dispose(Effects.kt:486)
        at androidx.compose.runtime.DisposableEffectImpl.onForgotten(Effects.kt:85)
        at androidx.compose.runtime.CompositionImpl$RememberEventDispatcher.dispatchRememberObservers(Composition.kt:772)
        at androidx.compose.runtime.CompositionImpl.applyChanges(Composition.kt:639)
        at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$2.invoke(Recomposer.kt:479)
        at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$2.invoke(Recomposer.kt:416)
        at androidx.compose.ui.platform.AndroidUiFrameClock$withFrameNanos$2$callback$1.doFrame(AndroidUiFrameClock.android.kt:34)
        at androidx.compose.ui.platform.AndroidUiDispatcher.performFrameDispatch(AndroidUiDispatcher.android.kt:109)
        at androidx.compose.ui.platform.AndroidUiDispatcher.access$performFrameDispatch(AndroidUiDispatcher.android.kt:41)
        at androidx.compose.ui.platform.AndroidUiDispatcher$dispatchCallback$1.doFrame(AndroidUiDispatcher.android.kt:69)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:970)
        at android.view.Choreographer.doCallbacks(Choreographer.java:796)
        at android.view.Choreographer.doFrame(Choreographer.java:727)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:957)
        at android.os.Handler.handleCallback(Handler.java:938)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:223)
        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)
     Caused by: java.lang.NullPointerException
        at androidx.core.util.Preconditions.checkNotNull(Preconditions.java:119)
        at androidx.camera.lifecycle.LifecycleCameraRepository.suspendUseCases(LifecycleCameraRepository.java:433)
        at androidx.camera.lifecycle.LifecycleCameraRepository.setInactive(LifecycleCameraRepository.java:387)
        at androidx.camera.lifecycle.LifecycleCameraRepository.unregisterLifecycle(LifecycleCameraRepository.java:214)
        at androidx.camera.lifecycle.LifecycleCameraRepository$LifecycleCameraRepositoryObserver.onDestroy(LifecycleCameraRepository.java:514)
        at java.lang.reflect.Method.invoke(Native Method)
        at androidx.lifecycle.ClassesInfoCache$MethodReference.invokeCallback(ClassesInfoCache.java:219)
        at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeMethodsForEvent(ClassesInfoCache.java:194) 
        at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeCallbacks(ClassesInfoCache.java:185) 
        at androidx.lifecycle.ReflectiveGenericLifecycleObserver.onStateChanged(ReflectiveGenericLifecycleObserver.java:37) 
        at androidx.lifecycle.LifecycleRegistry$ObserverWithState.dispatchEvent(LifecycleRegistry.java:354) 
        at androidx.lifecycle.LifecycleRegistry.backwardPass(LifecycleRegistry.java:284) 
        at androidx.lifecycle.LifecycleRegistry.sync(LifecycleRegistry.java:302) 
        at androidx.lifecycle.LifecycleRegistry.moveToState(LifecycleRegistry.java:148) 
        at androidx.lifecycle.LifecycleRegistry.setCurrentState(LifecycleRegistry.java:121) 
        at androidx.navigation.NavBackStackEntry.updateState(NavBackStackEntry.kt:169) 
        at androidx.navigation.NavBackStackEntry.setMaxLifecycle(NavBackStackEntry.kt:150) 
        at androidx.navigation.NavController$NavControllerNavigatorState.markTransitionComplete(NavController.kt:312) 
        at androidx.navigation.compose.ComposeNavigator.onTransitionComplete$navigation_compose_release(ComposeNavigator.kt:71) 
        at androidx.navigation.compose.NavHostKt$NavHost$3$2$1$invoke$$inlined$onDispose$1.dispose(Effects.kt:486) 
        at androidx.compose.runtime.DisposableEffectImpl.onForgotten(Effects.kt:85) 
        at androidx.compose.runtime.CompositionImpl$RememberEventDispatcher.dispatchRememberObservers(Composition.kt:772) 
        at androidx.compose.runtime.CompositionImpl.applyChanges(Composition.kt:639) 
        at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$2.invoke(Recomposer.kt:479) 
        at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$2.invoke(Recomposer.kt:416) 
        at androidx.compose.ui.platform.AndroidUiFrameClock$withFrameNanos$2$callback$1.doFrame(AndroidUiFrameClock.android.kt:34) 
        at androidx.compose.ui.platform.AndroidUiDispatcher.performFrameDispatch(AndroidUiDispatcher.android.kt:109) 
        at androidx.compose.ui.platform.AndroidUiDispatcher.access$performFrameDispatch(AndroidUiDispatcher.android.kt:41) 
        at androidx.compose.ui.platform.AndroidUiDispatcher$dispatchCallback$1.doFrame(AndroidUiDispatcher.android.kt:69) 
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:970) 
        at android.view.Choreographer.doCallbacks(Choreographer.java:796) 
        at android.view.Choreographer.doFrame(Choreographer.java:727) 
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:957) 
        at android.os.Handler.handleCallback(Handler.java:938) 
        at android.os.Handler.dispatchMessage(Handler.java:99) 
        at android.os.Looper.loop(Looper.java:223) 
        at android.app.ActivityThread.main(ActivityThread.java:7656) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947) 

I will try to make minimal reproduction, but can't do it right now as I have no time.