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const Dimensions = require('Dimensions'); //必须要写这一行，否则报错，无法找到这个变量const ScreenWidth = Dimensions.get('window').width;const ScreenHeight = Dimensions.get('window').height;export default class ShowItemView extends React.Component {    static propTypes = {        ...View.propTypes,        marginTop: PropTypes.number,//0.07 * ScreenHeight        buttonName: PropTypes.string.isRequired,        clickEvent:PropTypes.func.isRequired    }    constructor(props) {        super(props);    }    render() {        return (            
                       
    
     {this.checkIsNull(this.props.buttonName)?'暂无':this.props.buttonName}
                
           );    }    checkIsNull(data) {        return (typeof data == "undefined" || data == null || data == "")    }}

{/*提交按钮*/}                
   

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