OGeek|极客世界-中国程序员成长平台

标题: iphone - 进度跟踪问题 - AFNetworking 队列 [打印本页]

---

作者: 菜鸟教程小白    时间: 2022-12-12 14:58
标题: iphone - 进度跟踪问题 - AFNetworking 队列

我有以下代码用于使用 AFNetwork 队列下载两个请求

NSMutableArray *operations = [NSMutableArray array];
NSURLRequest *request1 = [NSURLRequest requestWithURL:URL1];
AFHTTPRequestOperation *operation1 = [[AFHTTPRequestOperation alloc] initWithRequest:request1];
operation1.outputStream = [NSOutputStream outputStreamToFileAtPathATH1 append:NO];

[operation1 setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) {
    float progress = (float)totalBytesRead / totalBytesExpectedToRead;
    NSLog(@"rogress 1 = %f",progress);
}];
[operations addObjectperation1];

NSURLRequest *request2 = [NSURLRequest requestWithURL:URL2];
AFHTTPRequestOperation *operation2 = [[AFHTTPRequestOperation alloc] initWithRequest:request2];
operation2.outputStream = [NSOutputStream outputStreamToFileAtPathATH2 append:NO];

[operation2 setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) {
    float progress = (float)totalBytesRead / totalBytesExpectedToRead;
    NSLog(@"rogress 2 = %f",progress*100);
}];
[operations addObjectperation2];

向AFTHTTPClient

添加请求

AFHTTPClient *requestHandler = [[AFHTTPClient alloc] initWithBaseURL:BASEURL];

[requestHandler enqueueBatchOfHTTPRequestOperationsperations progressBlock:^(NSUInteger numberOfCompletedOperations, NSUInteger totalNumberOfOperations) {
    NSLog(@"%d completed on %d",numberOfCompletedOperations,totalNumberOfOperations);

} completionBlock:^(NSArray *operations) {
}];

问题是我为每个请求单独获取进度。但我需要两个请求的整体进展。

---

Best Answer-推荐答案

只需创建一个全局 float 来控制这个，所有进度的总和是:

TotalProgress = firstProgress/numOperations + secondProgress/numOperations

//Declare this like a global.
#define numOperation 2    
float globalProgress = 0.0f;



//Your Operation Instances:
NSMutableArray *operations = [NSMutableArray array];
NSURLRequest *request1 = [NSURLRequest requestWithURL:URL1];
AFHTTPRequestOperation *operation1 = [[AFHTTPRequestOperation alloc] initWithRequest:request1];
operation1.outputStream = [NSOutputStream outputStreamToFileAtPathATH1 append:NO];

[operation1 setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) {
    globalProgress += ((float)totalBytesRead / totalBytesExpectedToRead)/numOperation;
}];
[operations addObjectperation1];

NSURLRequest *request2 = [NSURLRequest requestWithURL:URL2];
AFHTTPRequestOperation *operation2 = [[AFHTTPRequestOperation alloc] initWithRequest:request2];
operation2.outputStream = [NSOutputStream outputStreamToFileAtPathATH2 append:NO];

[operation2 setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) {
    globalProgress += ((float)totalBytesRead / totalBytesExpectedToRead)/numOperation;
}];
[operations addObjectperation2];

希望有帮助

关于iphone - 进度跟踪问题 - AFNetworking 队列，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19051331/

---

欢迎光临 OGeek|极客世界-中国程序员成长平台 (http://ogeek.cn/)

Powered by Discuz! X3.4