{"type": "Container","alignment": "center","child": {"type": "RaisedButton","color": "#FF00FF","padding": "8,8,8,8","textColor": "#00FF00","elevation" : 8.0,"splashColor" : "#00FF00","click_event" : "route://previewPage?url=http://m.baidu.com", "child" : {"type": "Text","data": "I am a test button"}}}