如何在App中集成Android PreviewView

要在App中集成Android PreviewView，您需要按照以下步骤操作：

在您的App的build.gradle文件中添加相应的依赖：

implementation 'androidx.camera:camera-camera2:1.0.0-beta01'implementation 'androidx.camera:camera-lifecycle:1.0.0-beta01'

在您的布局文件中添加PreviewView：

<androidx.camera.view.PreviewView    android:id="@+id/previewView"    android:layout_width="match_parent"    android:layout_height="match_parent" />

在您的Activity或Fragment中初始化PreviewView并启动相机预览：

private lateinit var previewView: PreviewViewprivate lateinit var cameraProvider: ProcessCameraProvideroverride fun onCreate(savedInstanceState: Bundle?) {    super.onCreate(savedInstanceState)    setContentView(R.layout.activity_main)    previewView = findViewById(R.id.previewView)    val cameraProviderFuture = ProcessCameraProvider.getInstance(this)    cameraProviderFuture.addListener({        cameraProvider = cameraProviderFuture.get()        val preview = Preview.Builder().build()        preview.setSurfaceProvider(previewView.surfaceProvider)        val cameraSelector = CameraSelector.DEFAULT_BACK_CAMERA        cameraProvider.bindToLifecycle(this, cameraSelector, preview)    }, ContextCompat.getMainExecutor(this))}

运行您的App并查看摄像头预览在PreviewView中显示的效果。

通过以上步骤，您可以在您的App中成功集成Android PreviewView。