如何在CameraX上切换到前置摄像头？

// 导入必要的类
import androidx.camera.core.CameraSelector
import androidx.camera.lifecycle.ProcessCameraProvider
import androidx.camera.view.PreviewView

// 在适当的位置获取PreviewView实例
val previewView: PreviewView = findViewById(R.id.previewView)

// 获取CameraProvider实例
val cameraProviderFuture = ProcessCameraProvider.getInstance(this)

// 设置切换到前置摄像头的逻辑
cameraProviderFuture.addListener({
    val cameraProvider: ProcessCameraProvider = cameraProviderFuture.get()

    // 创建相机选择器，并选择前置摄像头
    val cameraSelector = CameraSelector.DEFAULT_FRONT_CAMERA

    // 绑定相机到生命周期中的PreviewView
    val camera = cameraProvider.bindToLifecycle(this, cameraSelector, previewView.previewSurfaceProvider)

    // 可以在此处执行其他相机操作，如设置图像分析器或图像捕获用例

}, ContextCompat.getMainExecutor(this))