Firebase iOS -Cast StorageUploadTask的进度从Double升级到Int

Question

我正在将视频文件上传到Firebase Storage，并且正在使用进度指示器显示进度。一切正常，除了我无法显示Int（整数），它显示Doubles，如：

数字应为整数，例如0%, 33%, and 96%

我尝试将casting类型的percentLabel Double改成Int，但它一直崩溃：

let percentComplete: Double = 100.0 * Double(completedUnitCount) / Double(totalUnitCount)
self?.progressLabel.text = "\(Int(percentComplete))%"

如何使这些双打成为Int？

var uploadTask: StorageUploadTask?

uploadTask = videoIdRef?.putFile(from: videoUrl)

uploadTask?.observe(.progress, handler: {
    [weak self] (snapshot) in

    if let completedUnitCount = snapshot.progress?.completedUnitCount, let totalUnitCount =

        snapshot.progress?.totalUnitCount {

        let uploadProgress:Float = Float(completedUnitCount) / Float(totalUnitCount)
        self?.progressView.progress = uploadProgress   

        let percentComplete = 100.0 * Double(completedUnitCount) / Double(totalUnitCount)
        self?.progressLabel.text = "\(percentComplete)%"
    }
})

Answer 1

您可以为此使用简单的String初始化器

@PostMapping
public @ResponseBody CurriculumVitaeViewModel addCurriculumVitae(@RequestBody SaveCurriculumVitaeRequest model){
    CurriculumVitae newCv = new CurriculumVitae();

    curriculumVitaeModelMapper.Map(model, newCv);

    for (EducationViewModel ed:model.getEducations()
         ) {
        Education newEd = new Education();

        educationModelMapper.Map(ed, newEd);
        newCv.addEducation(newEd);
    }

    CurriculumVitae savedCv = curriculumVitaeRepository.save(newCv);