检查权限

Sets the aspect ratio for this view. The size of the view will be measured based on the ratio calculated from the parameters. Note that the actual siz

Capture a still picture. This method should be called when we get a response in {@link #mCaptureCallback} from both {@link #lockFocus()}.

Capture a still picture. This method should be called when we get a response in {@link #mCaptureCallback} from both {@link #lockFocus()}. 拍摄静态图片。

Configures the necessary {@link Matrix} transformation to `mTextureView`. This method should be called after the camera preview size is determined in

Opens the camera specified by {@link Camera2BasicFragment#mCameraId}.

开启摄像头 @param width @param height

Shows a {@link Toast} on the UI thread. @param text The message to show

Shows a {@link Toast} on the UI thread. @param text The message to show

选择壁纸

Given {@code choices} of {@code Size}s supported by a camera, choose the smallest one that is at least as large as the respective texture view size, a

Closes the current {@link CameraDevice}.

Configures the necessary {@link Matrix} transformation to `mTextureView`. This method should be called after the camera preview size is determined in

Creates a new {@link CameraCaptureSession} for camera preview.

为相机预览创建新的CameraCaptureSession

为相机预览创建新的CameraCaptureSession

Retrieves the JPEG orientation from the specified screen rotation. @param rotation The screen rotation. @return The JPEG orientation (one of 0, 90, 2

Retrieves the JPEG orientation from the specified screen rotation. @param rotation The screen rotation. @return The JPEG orientation (one of 0, 90, 2

初始化

Lock the focus as the first step for a still image capture.

将焦点锁定为静态图像捕获的第一步。（对焦）

开启摄像头

检查权限

检查权限

Run the precapture sequence for capturing a still image. This method should be called when we get a response in {@link #mCaptureCallback} from {@link

运行捕获静止图像的预捕获序列。 当我们从{@link #lockFocus（）}的{@link #mCaptureCallback}中得到响应时，应该调用此方法。

Sets up member variables related to camera. @param width The width of available size for camera preview @param height The height of available size f

设置与相机相关的成员变量。

设置与相机相关的成员变量。 @param width 相机预览的可用尺寸宽度 @param height 相机预览的可用尺寸的高度

Starts a background thread and its {@link Handler}.

启动一个HandlerThread

启动一个HandlerThread

开启预览 @param ctx @param surface

Stops the background thread and its {@link Handler}.

关闭预览

Initiate a still image capture.

Initiate a still image capture.

Unlock the focus. This method should be called when still image capture sequence is finished.

解锁焦点

点击事件 @param v