         x: 0,
                             y: 100,
                             w: hui.screenWidth,
                             h: 500
                        },
                        fixed: true
                        }, function(ret, err) {
                            if(ret){
                                hui.toast(JSON.stringify(ret));
                            }
                        });
                    },
                    prepare:function(){
                        const that = this;