AFHTTPSessionManager下载文件 及下载中 进度条处理，进度条处理需要特别注意，要加载NSRunLoop 中

- (void)timer:(NSTimer *)timer{ ???// 另一个View中 进度条progress属性赋值 ???_downloadView.progress = self.pressing; ???if (self.pressing >= 1.0) { ???????[timer invalidate]; ???}}-(void)downloadWithUrlString:(NSString *)urlString{ ???//1.创建会话管理者 ???AFHTTPSessionManager *manager =[AFHTTPSessionManager manager]; ???????NSURL *url = [NSURL URLWithString:@"http://120.25.226.186:32812/resources/videos/minion_01.mp4"];// ???NSURL *url = [NSURL URLWithString:urlString]; ???NSURLRequest *request = [NSURLRequest requestWithURL:url]; ???__weak typeof(self)weakself = self; ???NSURLSessionDownloadTask *download = [manager downloadTaskWithRequest:request progress:^(NSProgress * _Nonnull downloadProgress) { ???????//监听下载进度 ???????//completedUnitCount 已经下载的数据大小 ???????//totalUnitCount ????文件数据的中大小// ???????_downloadView.progressView.progress = 1.0 * downloadProgress.completedUnitCount / downloadProgress.totalUnitCount; ???????NSLog(@"%f",1.0 *downloadProgress.completedUnitCount / downloadProgress.totalUnitCount); ???????????????_pressing = 1.0 * downloadProgress.completedUnitCount / downloadProgress.totalUnitCount; ???????NSRunLoop *mainLoop = ??[NSRunLoop currentRunLoop]; ???????NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:0.016 target:weakself selector:@selector(timer:) userInfo:nil repeats:NO]; ???????// 添加到任务池中 ???????[mainLoop addTimer:timer forMode:NSDefaultRunLoopMode]; ???????[mainLoop run]; ???????????????????} destination:^NSURL * _Nonnull(NSURL * _Nonnull targetPath, NSURLResponse * _Nonnull response) { ???????/** ????????* 1:1：请求路径：NSUrl *url = [NSUrl urlWithString:path];从网络请求路径 ?2：把本地的file文件路径转成url，NSUrl *url = [NSURL fileURLWithPath:fullPath]； ????????2：返回值是一个下载文件的路径 ????????* ????????*/ ???????// 在只定路径下 创建文件夹：fireFileDataSource ???????NSString *fullPathFileDataSource = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:@"fireFileDataSource"]; ???????[weakself.fileToolManager createPath:fullPathFileDataSource]; ???????// 下载文件存储的路径 拼接上文件的名字 ???????NSString *fullPath = [NSString stringWithFormat:@"%@/%@",fullPathFileDataSource,response.suggestedFilename]; ???????return [NSURL fileURLWithPath:fullPath]; ???} completionHandler:^(NSURLResponse * _Nonnull response, NSURL * _Nullable filePath, NSError * _Nullable error) { ???????/** ????????*filePath:下载后文件的保存路径 ????????*/ ???????NSLog(@"%@",filePath); ???}]; ???????//3.执行Task ???[download resume];}注意问题 如果只是定时器 不会走，需要添加到NSRunLoop中 才行 这个是一个坑 重要代码注意如下- (void)timer:(NSTimer *)timer{ ???// 另一个View中 进度条progress属性赋值 ???_downloadView.progress = self.pressing; ???if (self.pressing >= 1.0) { ???????[timer invalidate]; ???}}NSRunLoop *mainLoop = ??[NSRunLoop currentRunLoop]; ???????NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:0.016 target:weakself selector:@selector(timer:) userInfo:nil repeats:NO]; ???????// 添加到任务池中 ???????[mainLoop addTimer:timer forMode:NSDefaultRunLoopMode]; ???????[mainLoop run];

_downloadView = [[DownloadView alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT)]; ???????????[_downloadView show];

#import <UIKit/UIKit.h>@interface DownloadView : UIView@property(nonatomic,strong) UIProgressView *progressView;//进度条@property(nonatomic,assign) CGFloat progress;- (void)show;@end

#import "DownloadView.h"@interface DownloadView ()@property(nonatomic,strong) UIView *backView; ??//后背景@property(nonatomic,strong) UIView *bgView; ????//背景@property(nonatomic,strong) UIView *topView; ???//上面@property(nonatomic,strong) UIView *contentView;//内容@property(nonatomic,strong) UILabel *titleLabel;//标题@property(nonatomic,strong) UILabel *numberLabel;//数字@property(nonatomic,strong) UIButton *closeButton;//关闭按钮@property(nonatomic,strong) UIView *ttView;@end@implementation DownloadView- (instancetype)initWithFrame:(CGRect)frame{ ???if (self = [super initWithFrame:frame]) { ???????self.alpha = 0; ???????[self addSubview:self.backView]; ???????[self.backView addSubview:self.bgView]; ???????[self.backView addSubview:self.topView]; ???????[self.backView addSubview:self.contentView]; ???????[self.backView addSubview:self.titleLabel]; ???????[self.backView addSubview:self.numberLabel]; ???????[self.backView addSubview:self.progressView]; ???????[self.backView addSubview:self.closeButton]; ???????[self.backView addSubview:self.ttView]; ???????????????__weak __typeof(self)weakSelf = self; ???????[self.bgView mas_makeConstraints:^(MASConstraintMaker *make) { ???????????make.width.mas_equalTo(180 / WIDTH_5S_SCALE); ???????????make.height.mas_equalTo(100 / WIDTH_5S_SCALE); ???????????make.center.equalTo(weakSelf); ???????}]; ???????[self.topView mas_makeConstraints:^(MASConstraintMaker *make) { ???????????make.top.left.right.equalTo(weakSelf.bgView); ???????????make.height.mas_equalTo(30 / WIDTH_5S_SCALE); ???????}]; ???????[self.titleLabel mas_makeConstraints:^(MASConstraintMaker *make) { ???????????make.centerX.equalTo(weakSelf.topView); ???????????make.centerY.equalTo(weakSelf.topView).offset(-5 / WIDTH_5S_SCALE); ???????????//make.center.equalTo(weakSelf.topView); ???????}]; ???????[self.closeButton mas_makeConstraints:^(MASConstraintMaker *make) { ???????????make.width.height.mas_equalTo(25); ???????????make.centerX.equalTo(weakSelf.bgView.mas_right).offset(-3 / WIDTH_5S_SCALE); ???????????make.centerY.equalTo(weakSelf.bgView.mas_top).offset(3 / WIDTH_5S_SCALE); ???????}]; ???????[self.contentView mas_makeConstraints:^(MASConstraintMaker *make) { ???????????make.top.equalTo(weakSelf.topView.mas_bottom); ???????????make.left.equalTo(weakSelf.bgView.mas_left); ???????????make.bottom.equalTo(weakSelf.bgView.mas_bottom); ???????????make.right.equalTo(weakSelf.bgView.mas_right); ???????}]; ???????[self.ttView mas_makeConstraints:^(MASConstraintMaker *make) { ???????????make.top.equalTo(weakSelf.topView.mas_bottom).offset(-10 / WIDTH_5S_SCALE); ???????????make.left.equalTo(weakSelf.topView.mas_left); ???????????make.right.equalTo(weakSelf.topView.mas_right); ???????????make.height.mas_equalTo(25); ???????}]; ???????[self.numberLabel mas_makeConstraints:^(MASConstraintMaker *make) { ???????????make.top.equalTo(weakSelf.contentView.mas_top).offset(0 / WIDTH_5S_SCALE); ???????????make.height.mas_equalTo(30 / WIDTH_5S_SCALE); ???????????make.left.equalTo(weakSelf.contentView.mas_left); ???????????make.right.equalTo(weakSelf.contentView.mas_right); ???????}]; ???????[self.progressView mas_makeConstraints:^(MASConstraintMaker *make) { ???????????make.top.equalTo(weakSelf.numberLabel.mas_bottom).offset(5 / WIDTH_5S_SCALE); ???????????make.left.equalTo(weakSelf.contentView.mas_left).offset(10 / WIDTH_5S_SCALE); ???????????make.right.equalTo(weakSelf.contentView.mas_right).offset(-10 / WIDTH_5S_SCALE); ???????????make.height.mas_equalTo(10); ???????}]; ???????????} ???return self;}#pragma mark -- Event- (void)show{ ???[[UIApplication sharedApplication].delegate.window addSubview:self]; ???[UIView animateWithDuration:0.15 animations:^{ ???????self.alpha = 1; ???}];}- (void)closeBtnClick{ ???[UIView animateWithDuration:.15 animations:^{ ???????self.alpha = 0 ; ???} completion:^(BOOL finished) { ???????[self removeFromSuperview]; ???}];}#pragma mark -- init- (UIView *)backView{ ???if (!_backView) { ???????_backView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT)]; ???????_backView.backgroundColor = [UIColor colorWithRed:0.2 green:0.2 blue:0.2 alpha:0.75]; ???} ???return _backView;}- (UIView *)bgView{ ???if (!_bgView) { ???????_bgView = [[UIView alloc] init]; ???????_bgView.backgroundColor = getColor(whiteColor); ???????_bgView.layer.cornerRadius = 5; ???????_bgView.layer.masksToBounds = YES; ???} ???return _bgView;}- (UIView *)topView{ ???if (!_topView) { ???????_topView = [[UIView alloc] init]; ???????_topView.backgroundColor = getColor(mainColor); ???????_topView.layer.cornerRadius = 5; ???????_topView.layer.masksToBounds = YES; ???} ???return _topView;}- (UIView *)contentView{ ???if (!_contentView) { ???????_contentView = [[UIView alloc] init]; ???????_contentView.backgroundColor = getColor(whiteColor); ???????_contentView.layer.cornerRadius = 5; ???????_contentView.layer.masksToBounds = YES; ???} ???return _contentView;}- (UIView *)ttView{ ???if (!_ttView) { ???????_ttView = [[UIView alloc] init]; ???????_ttView.backgroundColor = getColor(whiteColor); ???} ???return _ttView;}- (UILabel *)titleLabel{ ???if (!_titleLabel) { ???????_titleLabel = [[UILabel alloc] init]; ???????_titleLabel.font = DEF_FontSize_14; ???????_titleLabel.textColor = getColor(@"fa2671"); ???????_titleLabel.textAlignment = NSTextAlignmentCenter; ???????_titleLabel.text = @"下载硬件程序"; ???} ???return _titleLabel;}- (UILabel *)numberLabel{ ???if (!_numberLabel) { ???????_numberLabel = [[UILabel alloc] init]; ???????//_numberLabel.font = DEF_FontSize_26; ???????[_numberLabel setFont:[UIFont fontWithName:@"Helvetica-Bold" size:26]]; ???????_numberLabel.textColor = getColor(bgColor); ???????_numberLabel.textAlignment = NSTextAlignmentCenter;// ???????_numberLabel.text = @"50%"; ???} ???return _numberLabel;}- (UIProgressView *)progressView{ ???if (!_progressView) { ???????_progressView = [[UIProgressView alloc] initWithProgressViewStyle:UIProgressViewStyleDefault]; ???????_progressView.progressTintColor = getColor(bgColor);//进度条颜色 ???????_progressView.trackTintColor = getColor(@"d2d2d2");//默认也为灰色 ???????//_progressView.progressImage = [UIImage imageNamed:@"icon_vedio_progress"]; ???????//_progressView.trackImage = [UIImage imageNamed:@"icon_vedio_progressgrey"]; ???????_progressView.progressViewStyle = UIProgressViewStyleDefault; ???????_progressView.layer.cornerRadius = 5; ???????_progressView.layer.masksToBounds = YES; ???????[_progressView setProgress:0 animated:YES]; ???????????} ???return _progressView;}- (UIButton *)closeButton{ ???if (!_closeButton) { ???????_closeButton = [[UIButton alloc] init]; ???????[_closeButton setBackgroundImage:[UIImage imageNamed:@"icon_vedio_close"] forState:UIControlStateNormal]; ???????[_closeButton addTarget:self action:@selector(closeBtnClick) forControlEvents:UIControlEventTouchUpInside]; ???} ???return _closeButton;}/*- (void)sourceTimer{ ???dispatch_source_t _sourceTimer; ???//创建全局队列 ???dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); ???//创建定时器 ???_sourceTimer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, queue); ???//定时器延时 ???NSTimeInterval delayTime = 1.0f; ???//定时器时间间隔 ???NSTimeInterval timeInteral = 0.5f; ???//设置开始时间 ???dispatch_time_t startDelayTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayTime * NSEC_PER_SEC)); ???//设置定时器 ???dispatch_source_set_timer(_sourceTimer, startDelayTime, timeInteral*NSEC_PER_SEC, 0.1*NSEC_PER_SEC); ???//执行事件 ???dispatch_source_set_event_handler(_sourceTimer, ^{ ???????self.progressView.progress += 0.1; ???????????????????//销毁定时器 ???????dispatch_source_cancel(_sourceTimer); ???}); ???????????//启动计时器 ???dispatch_resume(_sourceTimer);}*/- (void)setProgress:(CGFloat)progress{ ???NSLog(@"进度进行时。。。。。。。。。。。。。。。。。。%f",progress); ???_progress = progress; ???_progressView.progress = progress; ???self.numberLabel.text = [NSString stringWithFormat:@"%.f %%",100 * progress]; ???if (progress >= 1) { ???????[self closeBtnClick]; ???}}@end