我找不到如何将camerax与Previewview一起使用。
最佳答案
这是一个如何将Camerax
与PreviewView
一起使用的示例,该代码使用CameraX的最新版本,即camera-camera2版本1.0.0-beta12和camera-view版本1.0.0-alpha19。
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
previewView = view.findViewById(R.id.preview_view);
setCameraProviderListener();
}
private void setCameraProviderListener() {
ListenableFuture<ProcessCameraProvider> cameraProviderFuture =
ProcessCameraProvider.getInstance(requireContext());
cameraProviderFuture.addListener(() -> {
try {
ProcessCameraProvider cameraProvider = cameraProviderFuture.get();
bindPreview(cameraProvider);
} catch (ExecutionException | InterruptedException e) {
// No errors need to be handled for this Future
// This should never be reached
e.printStackTrace();
}
}, ContextCompat.getMainExecutor(requireContext()));
}
private void bindPreview(ProcessCameraProvider cameraProvider) {
previewView.setPreferredImplementationMode(PreviewView.ImplementationMode.SURFACE_VIEW);
Preview preview = new Preview.Builder().setTargetAspectRatio(AspectRatio.RATIO_4_3).
setTargetRotation(previewView.getDisplay().getRotation())
.build();
CameraSelector cameraSelector =
new CameraSelector.Builder().requireLensFacing(CameraSelector.LENS_FACING_BACK).build();
preview.setSurfaceProvider(previewView.getSurfaceProvider());
cameraProvider.bindToLifecycle(this, cameraSelector,preview);
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.camera.view.PreviewView
android:id="@+id/preview_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/Yellow"
android:layout_gravity="center" />
</LinearLayout>
关于java - 如何将CameraX与PreviewView一起使用?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/60301296/