反应原生。 ＆＃34;无法找到变量＆＃34; react-native-fetch-blob出错

Question

我正在使用 react-native-fetch-blob 实现下载PDF文件。但我有一个错误＆＃34; 无法找到变量：已收到＆＃34;

onPDFPressed(){        
    RNFetchBlob
        .config({
            notification: true,
            path: 'downloads/pdf_test.pdf',
            indicator: true,
            overwrite: true,
            addAndroidDownloads: {
                path: RNFetchBlob.fs.dirs.SDCardDir +'/downloads/pdf_test.pdf',
                useDownloadManager: true,
                notification: true,
                overwrite: true,
                description: 'downloading content...',
                mime: 'application/pdf',
                mediaScannable: false
            }
        })
        .fetch('GET', 'http://www.pdf995.com/samples/pdf.pdf')
        .progress(received, total)
    {
        console.log('progress', received / total)
    }
}

有任何想法或建议吗？提前谢谢。

Answer 1

return函数需要获取函数，而不是两个变量作为参数。这是您需要更改为：

function getStudents() {
    var students = [];
    students[0] = {name: "Anna", mark: 65, sex: "female"};
    students[1] = {name: "James", mark:33, sex: "male"};
    students[2] = {name: "William", mark: 87, sex: "male"};
    students[3] = {name: "Jane", mark: 72, sex: "female"};
    students[4] = {name: "Rikki", mark: 60, sex: "male"};
    students[5] = {name: "Angela", mark: 58, sex: "female"};    
    return students;
}