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 | 极客笔记在线课程 |
| 知识星球 | 星球名称：深入浅出Android Camera 星球ID: 17296815 |
| 极客笔记圈 |
判断手动对焦是否支持
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);
}
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