第45讲手动对焦实战 -凯发k8旗舰厅

本讲是android camera专题系列的第45讲，我们介绍android camera2 api专题的手动对焦实战。

更多资源：

资源	描述
在线课程
知识星球	星球名称：深入浅出android camera 星球id: 17296815
wechat	极客笔记圈

手动对焦(manual focus)

判断手动对焦是否支持

lens_info_minimum_focus_distance是否大于0
cameracontrollermanager2#printfocuscapability

设置af mode为off

geekcamera代码逻辑

popupview
|--> preview#updatefocus
|----> preview#setfocusvalue
|------> cameracontroller2#setfocusvalue //更新focus mode或focus distance
|--------> camerasettings#setfocusmode
|--------> camerasettings#setfocusdistance
|------> cameracontroller2#setrepeatingrequest

调整focus distance

manualfocusseekbar#onprogresschanged // maniactivity
|--> preview#setfocusdistance
|----> cameracontroller2#setfocusdistance
|------> camerasettings#setfocusdistance
|------> cameracontroller2#setrepeatingrequest

setfocusdistance

private void setfocusdistance(capturerequest.builder builder) {
    if( mydebug.log )
        log.i(tag, "[af_practise] setfocusdistance change focus distance to "   focus_distance);
    builder.set(capturerequest.lens_focus_distance, focus_distance);
}