Android自定义Camera实现拍照功能_android自定义相机资源-CSDN下载

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Android自定义自定义Camera实现拍照功能实现拍照功能

本文记录了用自定义Camera实现的简单拍照功能。

Camera类在5.0以后不推荐使用了，取而代之的是android.hardware.camera2包下的类，本文使用Camera。

我们首先自定义一个View去继承SurfaceView:

public class CameraSurfaceView extends SurfaceView implements SurfaceHolder.Callback, Camera.AutoFocusCallback {

private SurfaceHolder mHolder;

private Camera mCamera;

private static final int ORIENTATION = 90;

private int mScreenWidth;

private int mScreenHeight;

private boolean isOpen;

public CameraSurfaceView(Context context, AttributeSet attrs) {

super(context, attrs);

getScreenMatrix(context);

mHolder = getHolder();

mHolder.addCallback(this);

mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

}

private void getScreenMatrix(Context context) {

WindowManager WM = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);

DisplayMetrics outMetrics = new DisplayMetrics();

WM.getDefaultDisplay().getMetrics(outMetrics);

mScreenWidth = outMetrics.widthPixels;

mScreenHeight = outMetrics.heightPixels;

}

public void takePicture(Camera.ShutterCallback mShutterCallback, Camera.PictureCallback rawPictureCallback,

Camera.PictureCallback jpegPictureCallback) {

if (mCamera != null)

mCamera.takePicture(mShutterCallback, rawPictureCallback, jpegPictureCallback);

}

public void startPreview() {

mCamera.startPreview();

}

@Override

public void surfaceCreated(SurfaceHolder holder) {

if (!checkCameraHardware(getContext()))

return;

if (mCamera == null) {

isOpen = safeCameraOpen(Camera.CameraInfo.CAMERA_FACING_BACK);

}

if (!isOpen) {

return;

}

mCamera.setDisplayOrientation(ORIENTATION);

try {

mCamera.setPreviewDisplay(holder);

} catch (IOException e) {

e.printStackTrace();

}

}

@Override

public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

if (mCamera != null) {

setCameraParams(mScreenWidth, mScreenHeight);

mCamera.startPreview();

}

}

@Override

public void surfaceDestroyed(SurfaceHolder holder) {

releaseCameraAndPreview();

}

private boolean safeCameraOpen(int id) {

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