android camerax如何处理图像保存

Android CameraX 是一个用于简化 Android 相机功能开发的库

添加依赖项：

在 app 的 build.gradle 文件中，添加 CameraX 和存储库的依赖项：

dependencies {
    implementation 'androidx.camera:camera-core:1.0.0'
    implementation 'androidx.camera:camera-camera2:1.0.0'
    implementation 'androidx.camera:camera-lifecycle:1.0.0'
    implementation 'androidx.camera:camera-view:1.0.0'
    implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
}

同时，确保添加了以下权限：

<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.front" />

配置 CameraX：

在 Activity 或 Fragment 中，配置 CameraX 和生命周期组件：

import androidx.activity.viewModels
import androidx.appcompat.app.AppCompatActivity
import androidx.camera.core.ImageAnalysis
import androidx.camera.core.ImageProxy
import androidx.camera.core.CameraSelector
import androidx.camera.core.ImageAnalyzer
import androidx.camera.lifecycle.ProcessCameraProvider
import androidx.lifecycle.lifecycleScope
import kotlinx.coroutines.launch

class MainActivity : AppCompatActivity() {
    private val viewModel: MainViewModel by viewModels()

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val cameraProviderFuture = ProcessCameraProvider.getInstance(this)
        cameraProviderFuture.addListener({
            val cameraProvider = cameraProviderFuture.get()
            bindPreview(cameraProvider)
        }, ContextCompat.getMainExecutor(this))
    }

    private fun bindPreview(cameraProvider: ProcessCameraProvider) {
        val preview = androidx.camera.core.Preview.Builder().build()
        preview.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)

        val imageAnalyzer = ImageAnalyzerBuilder().build()

        val cameraSelector = CameraSelector.Builder().requireLensFacing(CameraSelector.LENS_FACING_BACK).build()

        val cameraProviderFuture = ProcessCameraProvider.getInstance(this)
        cameraProviderFuture.addListener({
            val cameraProvider = cameraProviderFuture.get()
            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraSelector = CameraSelector.Builder().requireLensFacing(CameraSelector.LENS_FACING_BACK).build()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {
                it.setSurfaceProvider(findViewById<View>(R.id.previewView).surfaceProvider)
            }

            val cameraProvider = cameraProviderFuture.get()

            val imageAnalyzer = ImageAnalyzerBuilder().build()

            val cameraProvider = cameraProviderFuture.get()

            val preview = androidx.camera.core.Preview.Builder().build().also {

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