Download file manager wrapped NSURLSessionDataTask and NSURLSessionDownloadTask,provide progress update and status change.
下载管理类(TYDownLoadDataManager和TYDownloadSessionManager) 支持多文件断点下载和后台下载 封装了NSURLSessionDataTask和NSURLSessionDownloadTask，提供进度更新和状态改变block 和 delegate。
视频播放请看TYVideoPlayer
- Xcode 6 or higher
- iOS 7.0 or higher
- ARC
- TYDownLoadDataManager封装了NSURLSessionDataTask
- TYDownloadSessionManager封装了NSURLSessionDownloadTask
- 支持进度更新和状态改变block和delegate
- 支持多文件下载和断点续传下载，TYDownloadSessionManager支持后台下载
- 支持设置最大同时下载数maxDownloadCount和批量下载isBatchDownload
- 支持等待下载队列 先进先出或先进后出 resumeDownloadFIFO
// 下载代理
@property (nonatomic,weak) id<TYDownloadDelegate> delegate;
// 下载中的模型 只读
@property (nonatomic, strong,readonly) NSMutableArray *waitingDownloadModels;
// 等待中的模型 只读
@property (nonatomic, strong,readonly) NSMutableArray *downloadingModels;
// 最大下载数
@property (nonatomic, assign) NSInteger maxDownloadCount;
// 等待下载队列 先进先出 默认YES， 当NO时，先进后出
@property (nonatomic, assign) BOOL resumeDownloadFIFO;
// 全部并发 默认NO, 当YES时，忽略maxDownloadCount
@property (nonatomic, assign) BOOL isBatchDownload;
// 单例
+ (TYDownLoadDataManager *)manager;
// 单例
+ (TYDownloadSessionManager *)manager;
// 开始下载
- (TYDownloadModel *)startDownloadURLString:(NSString *)URLString toDestinationPath:(NSString *)destinationPath progress:(TYDownloadProgressBlock)progress state:(TYDownloadStateBlock)state;
// 开始下载
- (void)startWithDownloadModel:(TYDownloadModel *)downloadModel progress:(TYDownloadProgressBlock)progress state:(TYDownloadStateBlock)state;
// 开始下载
- (void)startWithDownloadModel:(TYDownloadModel *)downloadModel;
// 恢复下载（除非确定对这个model进行了suspend，否则使用start）
- (void)resumeWithDownloadModel:(TYDownloadModel *)downloadModel;
// 暂停下载
- (void)suspendWithDownloadModel:(TYDownloadModel *)downloadModel;
// 取消下载
- (void)cancleWithDownloadModel:(TYDownloadModel *)downloadModel;
// 删除下载
- (void)deleteFileWithDownloadModel:(TYDownloadModel *)downloadModel;
// 删除下载
- (void)deleteAllFileWithDownloadDirectory:(NSString *)downloadDirectory;
// 获取正在下载模型
- (TYDownloadModel *)downLoadingModelForURLString:(NSString *)URLString;
/**
* 下载进度
*/
@interface TYDownloadProgress : NSObject
// 续传大小
@property (nonatomic, assign, readonly) int64_t resumeBytesWritten;
// 这次写入的数量
@property (nonatomic, assign, readonly) int64_t bytesWritten;
// 已下载的数量
@property (nonatomic, assign, readonly) int64_t totalBytesWritten;
// 文件的总大小
@property (nonatomic, assign, readonly) int64_t totalBytesExpectedToWrite;
// 下载进度
@property (nonatomic, assign, readonly) float progress;
// 下载速度
@property (nonatomic, assign, readonly) float speed;
// 下载剩余时间
@property (nonatomic, assign, readonly) int remainingTime;
@end// TYDownloadModel block
// 进度更新block
typedef void (^TYDownloadProgressBlock)(TYDownloadProgress *progress);
// 状态更新block
typedef void (^TYDownloadStateBlock)(TYDownloadState state,NSString *filePath, NSError *error);
// TYDownLoadDataManager 和 TYDownloadSessionManager
// TYDownLoadManager下载代理
@protocol TYDownloadDelegate <NSObject>
// 更新下载进度
- (void)downloadModel:(TYDownloadModel *)downloadModel didUpdateProgress:(TYDownloadProgress *)progress;
// 更新下载状态
- (void)downloadModel:(TYDownloadModel *)downloadModel didChangeState:(TYDownloadState)state filePath:(NSString *)filePath error:(NSError *)error;
@end
// 下载可以使用 manager的代理 或者 downloadModel的block
- (IBAction)download:(id)sender {
TYDownloadSessionManager *manager = [TYDownloadSessionManager manager];
if (_downloadModel.state == TYDownloadStateReadying) {
[manager cancleWithDownloadModel:_downloadModel];
return;
}
if ([manager isDownloadCompletedWithDownloadModel:_downloadModel]) {
[manager deleteFileWithDownloadModel:_downloadModel];
}
if (_downloadModel.state == TYDownloadStateRunning) {
[manager suspendWithDownloadModel:_downloadModel];
return;
}
[self startDownlaod];
}
- (void)startDownlaod
{
TYDownloadSessionManager *manager = [TYDownloadSessionManager manager];
__weak typeof(self) weakSelf = self;
[manager startWithDownloadModel:_downloadModel progress:^(TYDownloadProgress *progress) {
weakSelf.progressView.progress = progress.progress;
weakSelf.progressLabel.text = [weakSelf detailTextForDownloadProgress:progress];
} state:^(TYDownloadState state, NSString *filePath, NSError *error) {
if (state == TYDownloadStateCompleted) {
weakSelf.progressView.progress = 1.0;
weakSelf.progressLabel.text = [NSString stringWithFormat:@"progress %.2f",weakSelf.progressView.progress];
}
[weakSelf.downloadBtn setTitle:[weakSelf stateTitleWithState:state] forState:UIControlStateNormal];
//NSLog(@"state %ld error%@ filePath%@",state,error,filePath);
}];
}
// [TYDownloadSessionManager manager].delegate = self;
// [TYDownLoadDataManager manager].delegate = self;
#pragma mark - TYDownloadDelegate
- (void)downloadModel:(TYDownloadModel *)downloadModel didUpdateProgress:(TYDownloadProgress *)progress
{
NSLog(@"delegate progress %.3f",progress.progress);
}
- (void)downloadModel:(TYDownloadModel *)downloadModel didChangeState:(TYDownloadState)state filePath:(NSString *)filePath error:(NSError *)error
{
NSLog(@"delegate state %ld error%@ filePath%@",state,error,filePath);
}
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