如何关闭相机：相机使用完关闭,发现在要写很多代码,这样十分麻烦。

private stopCamera() { 
  this.mCaptureSession?.stop(); 
  this.mCameraInput?.close(); 
  this.mPreviewOutput?.release(); 
  this.mPreviewOutput2?.release(); 
  if (this.mCaptureSession) { 
    this.mCaptureSession.release(); 
    this.mCaptureSession = undefined; 
  } 
}
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