所谓的网络测速吧，之前的项目需要用到网络测速，没有找到合适的办法，通过下载文件来计算平均值也算是一个办法吧，哪位大神如果有更好的办法求分享：
里面使用的AFNetworking；先下载AFNetworking，导入头文件 ：
#import "AFNetworking.h"
代码：
_downButton = [UIButton buttonWithType:(UIButtonTypeRoundedRect)];
_downButton.frame = CGRectMake(100, 100, 100, 30);
[_downButton setTitle:@"测速" forState:(UIControlStateNormal)];
[_downButton addTarget:self action:@selector(downButtonAction:) forControlEvents:(UIControlEventTouchUpInside)];
[self.view addSubview:_downButton];
-(void)downButtonAction:(UIButton * )button
{
_timeTage = 0;
NSLog(@"下载测试");
NSString *urlStr = @"http://music.baidu.com/data/music/file?link=http://yinyueshiting.baidu.com/data2/music/124728882/73007331421179261128.mp3?xcode=6185914085043ea4dcd75b509939a523bf95b0c3b098821b&song_id=7300733";
NSURL *url = [NSURL URLWithString:urlStr];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:3600];
AFURLSessionManager * manager = [[AFURLSessionManager alloc]initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
__autoreleasing NSProgress * progress = nil;
_task = [manager downloadTaskWithRequest:request progress:&progress destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {
NSLog(@"开始下载");
return nil;
} completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {
if (error) {
NSLog(@"%@",error);
}
}];
[_task resume];
self.downProgress = progress;
[self.downProgress addObserver:self forKeyPath:@"fractionCompleted" options:NSKeyValueObservingOptionNew context:nil];
self.timer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(progressMethod:) userInfo:nil repeats:YES];
}
-(void)progressMethod:(id)sender
{ _timeTage ++;
self.detailView.progress = self.downProgress.fractionCompleted;
if (self.downProgress.fractionCompleted>=1) {
[self.timer invalidate];//计时器停止
CGFloat wangsu = 4096.0 / _timeTage ;
_numberLable.text = [NSString stringWithFormat:@"平均网速：%.1lf K",wangsu];
}
NSLog(@"时间： %f",_timeTage);
}
//监听改变执行的方法
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
[self.detailView setProgress:self.downProgress.fractionCompleted];
if (object == self.downProgress && [keyPath isEqualToString:@"fractionCompleted"] == YES) {
CGFloat progressNumber = self.downProgress.fractionCompleted;
dispatch_queue_t queue = dispatch_get_main_queue();
dispatch_async(queue, ^{
self.numberLable.text = [NSString stringWithFormat:@"平均网速：%.1lf K",progressNumber * 1024];
});
}
}
注：本段代码中需要下载的文件为4M大小 ：可以更换成自己的网址，不要下载太大的文件。