如何使用
Android camera2 api使用闪光灯进行手动(触控)对焦?
我的captureRequest设置是:
1. type – TEMPLATE_PREVIEW
2. CONTROL_AE_MODE – CONTROL_AE_MODE_OFF
3. FLASH_MODE – FLASH_MODE_SINGLE
4. CONTROL_AF_TRIGGER – CONTROL_AF_TRIGGER_START
用法:
CaptureSession.capture(captureRequest.build(), captureCallback, null);
结果:
如果有足够的光线,相机会聚焦.否则闪光灯会快速闪烁并且对焦失败.
最佳答案 您可以通过以下方式尝试使用闪光灯执行手动(触摸)对焦:
mPreviewBuilder.set(CaptureRequest.CONTROL_AE_MODE, CameraMetadata.CONTROL_AE_MODE_ON_AUTO_FLASH);
使用TRIGGER时,同时使用AE和AF:
mPreviewBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_CANCEL);
mPreviewBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_START);
mPreviewBuilder.set(CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER, CameraMetadata.CONTROL_AE_PRECAPTURE_TRIGGER_START);
然后:
mCameraCaptureSession.setRepeatingRequest(mPreviewBuilder.build(), mPreviewSessionCallback, mHandler);