相机接口的问题，打不开相机

var _config = ${ddValid};
      dd_config(_config,["biz.util.uploadImage","biz.util.uploadImageFromCamera"]);
      dd.ready(function(){
          $("#select_pic").click(function(){
              dd.biz.util.uploadImage({
                  multiple: false, //是否多选，默认false
                  max: 1, //最多可选个数
                  onSuccess : function(result) {
                      //onSuccess将在图片上传成功之后调用
                      /*
                      [
                        'http://gtms03.alicdn.com/tps/i3/TB1VF6uGFXXXXalaXXXmh5R_VXX-237-236.png'
                      ]
                      */
                  },
                  onFail : function(err) {
                      
                  }
              });
          });
          $("#scan_pic").on('click',function(){
              dd.biz.util.uploadImageFromCamera({
                  compression:false,//(是否压缩，默认为true)
                  onSuccess : function(result) {
                       //onSuccess将在图片上传成功之后调用
                      /*
                      [
                        'http://gtms03.alicdn.com/tps/i3/TB1VF6uGFXXXXalaXXXmh5R_VXX-237-236.png'
                      ]
                      */
                  },
                  onFail : function(err) {
                      alert(JSON.stringify(err));
                  }
              });
          });
      })


调用相册上传图片和扫码测试都没问题，但是调用相机接口 uploadImageFromCamera 没法打开相机，直接进入onfail里面，打印err没有错误。


求斑竹大大助攻