我需要在没有检测到人脸的情况下隐藏相机拍摄按钮.我已经尝试了三天了。我无法找到一种方法来在检测到人脸时采取行动。
注:这段代码工作得很好,我只是需要添加人脸检测器,如何添加,在哪里添加?然后用这个人脸检测器对相机拍摄按钮进行操作。
btn_shot.setVisibility(view.GONE)
这里是创建相机预览。
private void creatCameraPreview() throws CameraAccessException {
SurfaceTexture texture = textureView.getSurfaceTexture();
texture.setDefaultBufferSize(imageDimensions.getWidth(),
imageDimensions.getHeight());
Surface surface = new Surface(texture);
captureRequestBuilder = cameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
captureRequestBuilder.addTarget(surface);
cameraDevice.createCaptureSession(Arrays.asList(surface), new CameraCaptureSession.StateCallback() {
@Override
public void onConfigured(@NonNull CameraCaptureSession session) {
if (cameraDevice == null)
return;
cameraCaptureSession = session;
try {
updatePreview();
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
@Override
public void onConfigureFailed(@NonNull CameraCaptureSession session) {
Toast.makeText(CameraTaken.this, "Configuration Changed", Toast.LENGTH_SHORT).show();
}
}, null);
}
这里是打开相机
private void openCamera() throws CameraAccessException {
CameraManager manager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
assert manager != null;
cameraId = manager.getCameraIdList()[0]; //[0] for the back facing camera [1] for the front facing camera
CameraCharacteristics characteristics = manager.getCameraCharacteristics(cameraId);
StreamConfigurationMap map = characteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
assert map != null;
imageDimensions = map.getOutputSizes(SurfaceTexture.class)[0];
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission(this, Manifest.permission.INTERNET) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(CameraTaken.this, new String[]{
Manifest.permission.CAMERA,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.INTERNET}, 101);
return;
}
manager.openCamera(cameraId, stateCallBack, null);
}
你可以尝试使用相机API中的人脸检测器,大多数设备上都有。https:/developer.android.comreferenceandroidhardwarecamera2CaptureRequest#STATISTICS_FACE_DETECT_MODE。 打开它。https:/developer.android.comreferenceandroidhardwarecamera2CaptureResult#STATISTICS_FACES。 读取是否有任何面孔被检测到。