android 自定义相机，Camera，相机遮罩层

（2）、布局layout.xml添加SurfaceView预览相机

<SurfaceView

android:id=“@+id/surfaceview”

android:layout_width=“match_parent”

android:layout_height=“match_parent”

android:layout_centerInParent=“true”/>

mView = (SurfaceView) findViewById(R.id.surfaceview);

mCamera.setPreviewDisplay(mView.getHolder());

（3）、启动相机Camera类

private void startPreview() {

if (mCamera != null) {

Log.i(TAG, “startPreview0000”);

mCamera.startPreview();

mCamera.setPreviewCallback(this);

}

}

@Override

protected void onPostCreate(Bundle savedInstanceState) {

super.onPostCreate(savedInstanceState);

// Check for the camera permission before accessing the camera. If the

// permission is not granted yet, request permission.

SurfaceHolder holder = mView.getHolder();

holder.addCallback(this);

holder.setFormat(ImageFormat.NV21);

Log.i(“lgq”, “…onPostCreate”);

}

（4）、点击拍照获取照片

创建回Camera调接口

private Camera.PictureCallback mPicture &#