调用系统拍照

// 如果点击的是拍照按钮
case R.id.btn_map_camera: {
            Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(intent, CAMERA_REQUESTCODE);
        }
            break;
// 调用系统的方法，进入拍照界面

    /**
     * 回调和拍照功能
     */
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        try {
            switch (requestCode) {
            case CAMERA_REQUESTCODE:
                if (resultCode == Activity.RESULT_OK && data != null) {
                    Bitmap image = (Bitmap) data.getExtras().get("data");
                    ByteArrayOutputStream bos = new ByteArrayOutputStream();
                    image.compress(CompressFormat.JPEG, 100, bos);
                    byte[] imagebytes = bos.toByteArray();// 照片信息

                    Bundle bundle = new Bundle();
                    bundle.putByteArray(CameraActivity.IMAGE_BUFFER, imagebytes);
                    Intent intent = new Intent();
                    intent.putExtras(bundle);
                    intent.setClass(MapActivity.this, CameraActivity.class);
                    startActivity(intent);
                }
                break;
            default:
                break;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }