小编YRf*_*ers的帖子

试图实现点击focus使用camera2api.

    CaptureRequest.Builder afBuilder = mPreviewBuilder;

    Rect newRect=new Rect(0,0,200,200);
    MeteringRectangle meteringRectangle=new MeteringRectangle(newRect,METERING_WEIGHT_DONT_CARE);

    MeteringRectangle[] areas = afBuilder.get(CaptureRequest.CONTROL_AF_REGIONS);

    mPreviewBuilder.set(CaptureRequest.CONTROL_AF_REGIONS,areas);
    mPreviewBuilder.set(CaptureRequest.CONTROL_AF_MODE, CameraMetadata.CONTROL_AF_MODE_AUTO);
    mPreviewBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_START);
    mPreviewSession.setRepeatingRequest(mPreviewBuilder.build(), mCaptureCallback, mBackgroundHandler);

在我的回电中,我不断陷入困境ACTIVE_SCAN并偶尔进入FOCUS_NOT_LOCKED状态.我似乎永远不会进入一个FOCUS_LOCKED状态,预览永远不会集中注意力.

使用三星星系音符3.