Java怎么正确配置CameraX
时间: 2023-11-26 18:02:38 浏览: 81
要正确配置CameraX,需要进行以下步骤:
1. 在项目的 build.gradle 文件中添加以下依赖:
```groovy
dependencies {
def camerax_version = "1.0.0-beta05"
implementation "androidx.camera:camera-core:$camerax_version"
implementation "androidx.camera:camera-camera2:$camerax_version"
implementation "androidx.camera:camera-lifecycle:$camerax_version"
implementation "androidx.camera:camera-view:1.0.0-alpha22"
}
```
2. 在 AndroidManifest.xml 文件中添加以下权限:
```xml
<uses-permission android:name="android.permission.CAMERA" />
```
3. 在 layout 文件中添加 CameraView:
```xml
<androidx.camera.view.CameraView
android:id="@+id/camera_view"
android:layout_width="match_parent"
android:layout_height="match_parent" />
```
4. 在 Activity 或 Fragment 中初始化 CameraX,并绑定 CameraView:
```kotlin
class MainActivity : AppCompatActivity() {
private lateinit var cameraView: CameraView
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
cameraView = findViewById(R.id.camera_view)
// 初始化 CameraX
val cameraProviderFuture = ProcessCameraProvider.getInstance(this)
cameraProviderFuture.addListener({
val cameraProvider = cameraProviderFuture.get()
// 配置 Preview
val preview = Preview.Builder().build()
preview.setSurfaceProvider(cameraView.surfaceProvider)
// 绑定 CameraView 和 Preview
val cameraSelector = CameraSelector.DEFAULT_BACK_CAMERA
val camera = cameraProvider.bindToLifecycle(this, cameraSelector, preview)
}, ContextCompat.getMainExecutor(this))
}
}
```
这样就可以完成 CameraX 的配置了,可以通过 CameraView 实现相机预览和拍照功能。
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