Android-硬件

相机

相机打开 camera = Camera.open();

获取相机参数 Camera.Parameters params = camera.getParameters();

常用设置：

预览界面：preview-size-values=800,480支持范围内

每秒捕获次数：preview-frame-rate=5

图片输出格式：picture-format=jpeg

照片大小：icture-size-values=支持范围内

Log.i("Camera参数",params.flatten());

释放相机 

if(camera!=null){
    camera.release();
}

 实例

private final class SurfaceCallBack implements SurfaceHolder.Callback{

    @Override
    public void surfaceCreated(SurfaceHolder surfaceHolder) {
        camera = Camera.open();
        Camera.Parameters params = camera.getParameters();
        params.setPreviewSize(800,480);
        params.setPreviewFpsRange(5,5);
        params.setPictureSize(2014,768);
        params.setJpegQuality(80);
        camera.setParameters(params);
        try {
            camera.setPreviewDisplay(surfaceHolder);
            camera.startPreview();//开始预览
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) {

    }

    @Override
    public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
        if(camera!=null){
            camera.release();
        }
    }
}