进度条无规律地移动

Posted 2023-02-24

【中文标题】进度条无规律地移动

【英文标题】：progressBar moving irrevently

【发布时间】：2013-05-16 10:12:56

【问题描述】：

我正在使用进度条来显示上传到 ftpserver 的文件的上传百分比，这是它第一次很好地更新，当我取消上传并再次启动时。 50% 的上传进度条正在填充，第三次为 25% 的总进度条正在填充。

这里是代码（我使用 s7ftp 类上传到服务器）

- (void)uploadBytesWritten:(S7FTPRequest *)request 


if (uploadedData < totalFileSize) 
    uploadedData = uploadedData + request.bytesWritten;

float total = (float)totalFileSize;
float bytes = (float)request.bytesWritten;
float pt = (bytes/total);
float totalSizeMb = (total/1048576);
//    NSLog(@"File Size in Mb:%f",totalSizeMb);
float uploadDataMb = (uploadedData/1048576);
NSString* totalSize = [NSString stringWithFormat: @"%5.1f", totalSizeMb];
NSString* uploadData = [NSString stringWithFormat: @"%5.1f", uploadDataMb];
//    float str = (uploadDataMb/totalSizeMb);
float str = (uploadedData/total);
float string = str*100;
int PercentageFinal = roundf(string);
 NSString *uploadPercentage = [NSString stringWithFormat:@"%d",PercentageFinal];
uploadpercentage = [NSString stringWithFormat:@"%@Mb/%@Mb", uploadData, totalSize];
NSLog(@"Uploading percentage:%@",uploadpercentage);
NSString *percentage = [NSString stringWithFormat:@"%f",pt];
uploadProgressView.progress += [percentage doubleValue];
[[NSNotificationCenter defaultCenter]   postNotificationName:@"UpdatePercentageNotification" object:nil userInfo:[[NSDictionary alloc] initWithObjectsAndKeys:percentage, @"percentage",uploadpercentage,@"UploadPercentage",uploadPercentage,@"Percent",nil]];

在另一个班级

-(void)Viewdidload
      [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(updatePercentageNotificationOne:) name:@"UpdatePercentageNotification" object:nil];
  

- (void)updatePercentageNotificationOne:(NSNotification *)notification
NSLog(@"Updating percentage in upload all view");
 //    NSString *uploadpercentage = [[notification userInfo ]objectForKey:@"UploadPercentage"];
//    NSLog(@"Percentage:%@",uploadpercentage);
NSString *percent= [[notification userInfo]objectForKey:@"Percent"];
NSLog(@"percent:%@",percent);
NSString *percentage = [[notification userInfo] objectForKey:@"percentage"];
//    NSLog(@"Percentage......%@",percentage);
percentageLabel.text = percent;
ProgressBar.progress +=[percentage doubleValue];
[[NSNotificationCenter defaultCenter] removeObserver:@"UpdatePercentageNotification"];

 

【问题讨论】：

你在哪里为进度条分配了初始化

【参考方案1】：

K 当您再次开始上传时，progressBar 需要重置。当用户点击上传时，您只需分配初始化它。

【讨论】：

那么可能是其他一些值，如totalFileSize，uploadData 没有正确初始化。