init
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zxj
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package com.sw.dualscreen.activity
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import android.Manifest
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import android.content.Context
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import android.content.pm.PackageManager
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import android.graphics.SurfaceTexture
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import android.hardware.camera2.CameraCaptureSession
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import android.hardware.camera2.CameraDevice
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import android.hardware.camera2.CameraManager
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import android.hardware.camera2.CaptureRequest
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import android.os.Bundle
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import android.util.Log
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import android.view.Surface
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import android.view.TextureView
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import android.widget.Button
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import android.widget.Toast
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import androidx.appcompat.app.AppCompatActivity
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import androidx.core.content.ContextCompat
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import com.sw.dualscreen.R
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class Camera2Activity : AppCompatActivity() {
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private lateinit var cameraManager: CameraManager
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private var cameraIdList: Array<String> = arrayOf()
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private var currentCameraIdIndex = 0
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private lateinit var textureView: TextureView
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private var cameraDevice: CameraDevice? = null
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private var cameraCaptureSession: CameraCaptureSession? = null
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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setContentView(R.layout.activity_camera2)
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textureView = findViewById(R.id.textureView)
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cameraManager = getSystemService(Context.CAMERA_SERVICE) as CameraManager
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// 获取摄像头列表
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cameraIdList = cameraManager.cameraIdList
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if (cameraIdList.isEmpty()) {
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Toast.makeText(this, "没有可用的摄像头", Toast.LENGTH_SHORT).show()
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finish()
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}
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// 设置TextureView监听
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textureView.surfaceTextureListener = surfaceTextureListener
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// 切换摄像头按钮
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findViewById<Button>(R.id.switchButton).setOnClickListener {
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switchCamera()
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}
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}
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private val surfaceTextureListener = object : TextureView.SurfaceTextureListener {
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override fun onSurfaceTextureAvailable(surface: SurfaceTexture, width: Int, height: Int) {
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openCamera(cameraIdList[currentCameraIdIndex])
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}
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override fun onSurfaceTextureSizeChanged(
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surface: SurfaceTexture,
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width: Int,
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height: Int
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) {
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}
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override fun onSurfaceTextureDestroyed(surface: SurfaceTexture): Boolean = true
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override fun onSurfaceTextureUpdated(surface: SurfaceTexture) {}
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}
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private fun openCamera(cameraId: String) {
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if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) !=
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PackageManager.PERMISSION_GRANTED
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) {
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return
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}
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try {
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cameraManager.openCamera(cameraId, object : CameraDevice.StateCallback() {
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override fun onOpened(device: CameraDevice) {
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cameraDevice = device
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createCameraPreviewSession()
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}
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override fun onDisconnected(device: CameraDevice) {
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device.close()
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cameraDevice = null
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}
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override fun onError(device: CameraDevice, error: Int) {
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device.close()
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cameraDevice = null
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}
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}, null)
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} catch (e: Exception) {
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Log.e("Camera2", "打开摄像头失败", e)
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}
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}
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private fun createCameraPreviewSession() {
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val surfaceTexture = textureView.surfaceTexture
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surfaceTexture?.setDefaultBufferSize(textureView.width, textureView.height)
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val surface = Surface(surfaceTexture)
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try {
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val previewRequestBuilder = cameraDevice?.createCaptureRequest(
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CameraDevice.TEMPLATE_PREVIEW
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)?.apply {
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addTarget(surface)
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}
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cameraDevice?.createCaptureSession(
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listOf(surface),
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object : CameraCaptureSession.StateCallback() {
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override fun onConfigured(session: CameraCaptureSession) {
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cameraCaptureSession = session
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previewRequestBuilder?.let { builder ->
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builder.set(
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CaptureRequest.CONTROL_AF_MODE,
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CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE
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)
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session.setRepeatingRequest(builder.build(), null, null)
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}
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}
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override fun onConfigureFailed(session: CameraCaptureSession) {
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Toast.makeText(this@Camera2Activity, "配置失败", Toast.LENGTH_SHORT).show()
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}
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},
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null
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)
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} catch (e: Exception) {
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Log.e("Camera2", "创建预览会话失败", e)
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}
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}
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private fun switchCamera() {
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if (cameraIdList.size <= 1) {
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Toast.makeText(this, "只有一个摄像头", Toast.LENGTH_SHORT).show()
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return
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}
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// 关闭当前摄像头
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cameraCaptureSession?.close()
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cameraCaptureSession = null
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cameraDevice?.close()
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cameraDevice = null
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// 切换到下一个摄像头
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currentCameraIdIndex = (currentCameraIdIndex + 1) % cameraIdList.size
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openCamera(cameraIdList[currentCameraIdIndex])
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}
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override fun onDestroy() {
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super.onDestroy()
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cameraCaptureSession?.close()
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cameraDevice?.close()
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}
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}
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@@ -0,0 +1,100 @@
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package com.sw.dualscreen.activity
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import android.content.Context
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import android.graphics.Outline
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import android.hardware.display.DisplayManager
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import android.os.Bundle
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import android.view.View
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import android.view.ViewOutlineProvider
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import androidx.activity.enableEdgeToEdge
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import androidx.activity.viewModels
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import androidx.appcompat.app.AppCompatActivity
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import androidx.camera.core.CameraSelector
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import androidx.camera.core.Preview
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import androidx.camera.lifecycle.ProcessCameraProvider
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import androidx.core.content.ContextCompat
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import com.google.common.util.concurrent.ListenableFuture
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import com.sw.dualscreen.databinding.ActivityMainBinding
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import com.sw.dualscreen.ext.dp
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import com.sw.dualscreen.presentation.SecondaryScreenPresentation
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import com.sw.dualscreen.viewmodel.MyViewModel
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import com.sw.plate.utils.arcface.viewmodel.RecognizeViewModel
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import timber.log.Timber
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class MainActivity : AppCompatActivity() {
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private lateinit var binding: ActivityMainBinding
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private lateinit var cameraProviderFuture: ListenableFuture<ProcessCameraProvider>
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private val viewModel = MyViewModel()
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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enableEdgeToEdge()
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binding = ActivityMainBinding.inflate(layoutInflater)
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setContentView(binding.main)
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initView()
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startCamera()
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setupSecondaryDisplay()
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}
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private fun initView() {
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binding.previewView.outlineProvider = object : ViewOutlineProvider() {
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override fun getOutline(view: View, outline: Outline) {
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// outline.setRoundRect(0, 0, view.width, view.height, 12f.dp)
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outline.setRoundRect(0, 0, view.width, view.height, 280f.dp)
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}
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}
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binding.previewView.clipToOutline = true
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}
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private fun startCamera() {
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cameraProviderFuture = ProcessCameraProvider.getInstance(this)
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cameraProviderFuture.addListener({
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val cameraProvider = cameraProviderFuture.get()
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// 创建预览用例
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val preview = Preview.Builder()
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.build()
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.also {
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it.setSurfaceProvider(binding.previewView.surfaceProvider)
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}
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// 选择后置摄像头
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val cameraSelector = CameraSelector.DEFAULT_BACK_CAMERA
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try {
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// 解绑所有用例
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cameraProvider.unbindAll()
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// 绑定到生命周期
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cameraProvider.bindToLifecycle(
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this, cameraSelector, preview
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)
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} catch (exc: Exception) {
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Timber.e(exc, "Use case binding failed")
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}
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}, ContextCompat.getMainExecutor(this))
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}
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private fun setupSecondaryDisplay() {
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val displayManager = getSystemService(Context.DISPLAY_SERVICE) as DisplayManager
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val displays = displayManager.displays
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// 查找副屏（通常索引为1）
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if (displays.size > 1) {
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val secondaryDisplay = displays[1]
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// 创建副屏的Presentation
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val presentation =
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SecondaryScreenPresentation(
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activity = this,
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this,
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display = secondaryDisplay,
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viewModel = viewModel,
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recognizeViewModel = viewModels<RecognizeViewModel>().value
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)
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presentation.show()
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}
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}
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}
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