MediaProjection录屏 kotlin

可以使用 MediaProjection API 来录屏，以下是 Kotlin 代码示例：

class ScreenCaptureService: Service() {
    private lateinit var mediaProjectionManager: MediaProjectionManager
    private var mediaProjection: MediaProjection? = null
    private lateinit var virtualDisplay: VirtualDisplay

    override fun onCreate() {
        super.onCreate()

        mediaProjectionManager = getSystemService(Context.MEDIA_PROJECTION_SERVICE) as MediaProjectionManager
    }

    override fun onBind(intent: Intent?): IBinder? {
        return null
    }

    fun startScreenCapture(resultCode: Int, data: Intent?) {
        mediaProjection = mediaProjectionManager.getMediaProjection(resultCode, data)
        val displayMetrics = resources.displayMetrics
        val screenWidth = displayMetrics.widthPixels
        val screenHeight = displayMetrics.heightPixels
        val screenDensity = displayMetrics.densityDpi

        virtualDisplay = mediaProjection!!.createVirtualDisplay(
            "ScreenCapture",
            screenWidth,
            screenHeight,
            screenDensity,
            DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR,
            // The surface on which to render the captured images
            surface,
            null, // Callbacks for when the display's projection is stopped or resized
            null // Handler on which to invoke the callbacks
        )
    }

    fun stopScreenCapture() {
        if (mediaProjection ! null) {
            mediaProjection!!.stop()
            mediaProjection = null
        }
        if (virtualDisplay != null) {
            virtualDisplay.release()
            virtualDisplay = null
        }
    }
}