本文介绍了camera2,android中的手动对焦的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我正在寻找一个在 android 的 camera2 中手动对焦的示例.我试图获得如下所示的最小焦距和可用焦距,但这没有帮助.如何控制焦距?

i am looking for an example of manual focus in camera2 in android. I tried to get minimum focus distance and available focal lengths shown below, but it didn't help. How to control the focus distance ?

float minimumLens = characteristics.get(CameraCharacteristics.LENS_INFO_MINIMUM_FOCUS_DISTANCE);

float[] lensDistances = characteristics.get(CameraCharacteristics.LENS_INFO_AVAILABLE_FOCAL_LENGTHS); 

我需要用 seekbar 来控制它.提前致谢.

I need to control it with seekbar.Thanks in advance.

推荐答案

 switch (seekBar.getId()) {
            case R.id.sb_focus:
                float minimumLens = mCameraCharacteristics.get(CameraCharacteristics.LENS_INFO_MINIMUM_FOCUS_DISTANCE);
                float num = (((float) i) * minimumLens / 100);
                mPreviewBuilder.set(CaptureRequest.LENS_FOCUS_DISTANCE, num);
                int showNum = (int) num;
                mSeekBarTextView.setText("focus:" + showNum);
                break;}

小心,CONTROL_AF_MODE 应该关闭.
https://github.com/pinguo-yuyidong/Camera2/blob/master/app/src/main/java/us/yydcdut/androidltest/ui/DisplayFragment.java
第 1109 行代码

be careful ,CONTROL_AF_MODE should be OFF.
https://github.com/pinguo-yuyidong/Camera2/blob/master/app/src/main/java/us/yydcdut/androidltest/ui/DisplayFragment.java
code in Line 1109

这篇关于camera2,android中的手动对焦的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

05-19 06:09