iOS8后台运行方案总结

1、iOS 8.0后台任务长期运行方案后台运行方案实现方式为：Backgro un dRu nne叶 NSURLSession1. 配置軸MlCinaz ts infs 乱£呢讷辭Build 內曲99Build RusVoice cvsr IF9 kfl*t3tana 旳 ic3Cs Dcttnai acceissory conniricabor3 IMta BtK)ao41i L£ acCBsSdrieaj*ds 35 a E .Btcotti LE access:Parrott isMca:x&5tepi： J J4d dRcqu -2 E«?nirrtd

2、 'Joow* 唱 io)cuf pn,£ie* Keychain ShmngApp GroupsOf?- HomoKitOats Pto：Mi «i2. 在 AppDelegate 中property (assign , nonatomic ) BOOL isBackground; / 判读是否是后台运行-(void )applicationDidEnterBackground:( UIApplication*)applicationBackgroundRunner shared run;self . isBackground = yes;/在回到界面后关闭后台运

3、行-(void )applicationWillEnterForeground:( UIApplication*)application BackgroundRunner shared stop ;self .isBackground = NO;3. 手机密码锁开启后的文件保护问题设置/ 设置常量#define UrlsessionDownload #define BundleIdentifier NSBundle mainBundlebundleIdentifier/ 打开 uisesion 目录的文件保护设置为无 /创建可使用的 urlseseion 路径 -(void )createUr

4、lSessionNSString *theFMCachePath= nil;NSArray *pathes = NSSearchPathForDirectoriesInDomains (NSCachesDirect ory, NSUserDomainMask , YES);theFMCachePath = pathes objectAtIndex :0; theFMCachePath = theFMCachePath stringByAppendingString :UrlsessionDownload ;theFMCachePath = theFMCachePath stringByAppe

5、ndingString :NSString stringWithFormat :"%/" ,BundleIdentifier ;NSFileManager *fileManager = NSFileManager defaultManager ;if(!fileManagerisExecutableFileAtPath :theFMCachePath)/设置文件为无权限保护NSDictionary *attributes = NSDictionary dictionaryWithObject :NSFileProtectionNoneforKey :NSFileProtec

6、tionKey ;fileManagercreateDirectoryAtPath :theFMCachePathwithIntermediateDirectories :YESattributes :attributeserror :nil ;4上传 sessioin 的代码(, UploadSessionBackgound.h, UploadSessionBackgound.m )/Upl oadSessionBackgound.h#import <Foundation/Foundation.h>protocol UploadSessionBackgoundDelegate&l

7、t;NSObject >-(void )requestUploadFinishDictionary:( NSDictionary *)dictionary;endinterface UploadSessionBackgound : NSObject <NSURLSessionDataDelegate >property (nonatomic , strong ) NSURLSession *urlSession;property (nonatomic , strong ) NSURLSessionUploadTask *sesssionDataTask;property (n

8、onatomic , weak ) id<UploadSessionBackgoundDelegate > sessioinDelegate;-(void )startBackground:( NSMutableURLRequest *)request;-(void )stopUploadBackground;end/Upl oadSessionBackgound.m#import "UploadSessionBackgound.h"implementation UploadSessionBackgound synthesize urlSession,sesss

9、ionDataTask,sessioinDelegate;-(NSURLSession *)urlSessionstatic NSURLSession *session;static dispatch_once_t onceToken;dispatch_once (&onceToken, Asession = NSURLSession sessionWithConfiguration :backgroundConfigObject delegate :self delegateQueue :nil;);return session;-(void )startBackground:( N

10、SMutableURLRequest *)request self .sesssionDataTask = self .urlSession uploadTaskWithStreamedRequest :request;self .sesssionDataTask resume ;-(void )stopUploadBackgroundself .sesssionDataTask cancel ;- (void )URLSession:( NSURLSession *)session dataTask:( NSURLSessionDataTask *)dataTask didReceiveDa

11、ta:( NSData *)data;if(data= nil)self .sessioinDelegaterequestUploadFinishDictionary :nil;return ;NSDictionary *dict = NSJSONSerializationJSONObjectWithData :data options :0 error :nil ;NSLog ("dict:%" ,dict);self .sessioinDelegate requestUploadFinishDictionary :dict;- (void )URLSession:( N

12、SURLSession *)session didBecomeInvalidWithError:( NSError *)error self .sessioinDelegate requestUploadFinishDictionary :nil; end上传 session 写好后，下面就可以使用这个 session 了，每个应用上传接口都不一样，但是 最终会调用上传， 我这里的方式是上传的信息全 部在 NSMutableURLRequest 中，NSMutableURLRequest 就大概说下NSMutableURLRequest*request= NSMutableURLRequest

13、 requestWithURL :s_url cachePolicy :NSURLRequestReloadIgnoringLocalCacheD ata timeoutInterval :CONNECT_TIMEOUT ;request setHTTPBody :data;request setHTTPMethod :"PUT" ;s_url :上传的接口 url，如 CONNECT_TIMEOUT ：超时时间，如： 60data:将要上传的nsdata数据上传完成后回调方法:-(void)requestUploadFinishDictionary:( NSDiction

14、ary *)dictionary/处理逻辑5.很多上传逻辑中并不是仅仅包含上传文件的 业务，也有很多普通的网络请求， 我们来说说如 何把普通的网络请求也和 urlsession 方式处理， (SeesionConnection.h, SeesionConnection.m)/ SeesionConnection.h #import <Foundation/Foundation.h>protocol SeesionConnectionDelegate < NSObject >-(void )requestSeesionConnectionDictionary:( NSDi

15、ctionary *)dictionary;endinterface SeesionConnection : NSObjectproperty (nonatomic , strong ) NSURLSession *urlSession;property (nonatomic , strong ) NSURLSessionDownloadTask *sesssionDataTask;property (nonatomic , weak ) id<SeesionConnectionDelegate > sessioinDelegate;-(void )startBackground:

16、( NSMutableURLRequest *)request;-(void )stopDownBackground;end/ SeesionConnection.m#import "SeesionConnection.h"implementation SeesionConnection synthesize urlSession,sesssionDataTask,sessioinDelegate;-(NSURLSession *)urlSessionstatic NSURLSession *session; static dispatch_once_t onceToken

17、;dispatch_once (&onceToken, Asession = NSURLSession sessionWithConfiguration :backgroundConfigObject delegate :self delegateQueue :nil;);return session;-(void )startBackground:( NSMutableURLRequest self .sesssionDataTask = self .urlSession downloadTaskWithRequest :request;self .sesssionDataTask

18、resume ; -(void )stopDownBackgroundself .sesssionDataTask cancel ;*)requestNSURL- (void )URLSession:( NSURLSession *)session downloadTask:( NSURLSessionDownloadTask *)downloadTask didFinishDownloadingToURL:( *)locationNSFileManager *fileManager = NSFileManager defaultManager ;NSData *data = NSData d

19、ataWithContentsOfURL :location;if(data= nil)self .sessioinDelegate requestSeesionConnectionDictionary :nil;NSError *error;fileManager removeItemAtURL :location error :&error;NSLog ("error:%" ,error); return ;NSDictionary *dict = NSJSONSerialization JSONObjectWithData :data options :0 e

20、rror :nil ;NSLog ("dict:%" ,dict);self .sessioinDelegate requestSeesionConnectionDictionary :dict;NSError *error;fileManager removeItemAtURL :location error :&error; NSLog ("error:%" ,error);- (void )URLSession:( NSURLSession *)session didBecomeInvalidWithError:( NSError *)er

21、rorself .sessioinDelegate requestSeesionConnectionDictionary :nil;end网路请求的 session 写好后就是调用了SessionVerifyBackground *sessioinVerifyBackground SessionVerifyBackground alloc init ;sessioinVerifyBackground setSessioinDelegate :self ;类，sessioinVerifyBackground startBackground :request;request ：自己去创建吧， NS

22、MutableURLRequest-(void )requestSeesionConnectionDictionary:( NSDictionary *)dictionary/这里处理逻辑6.下载 session 的代码( DownSessionBackground.h, DownSessionBackground.m )/ DownSessionBackground.h#import <Foundation/Foundation.h>interface DownSessionBackground :NSObject <NSURLSessionDownloadDelegate

23、 >property (nonatomic , assign ) BOOL isBackGround;property (nonatomic , strong , readonly ) NSURLSession *urlSession;property (nonatomic , strong ) NSURLSessionDownloadTask *downloadTask;-(id )init;-(void )startDownBackground;-(void )stopDownBackground;end/ DownSessionBackground.m#import "D

24、ownSessionBackground.h"implementation DownSessionBackgroundsynthesize isBackGround,urlSession,downloadTask;-(id )initstatic DownSessionBackground *background;static dispatch_once_t onceToken;dispatch_once (&onceToken, Abackground = super init;);return background; - ( NSURLSe s s i o n *)url

25、Sessionstatic NSURLSession *backgroundSession = nil; static dispatch_once_t onceToken;dispatch_once (&onceToken, ANSURLSessionConfiguration *config = NSURLSessionConfiguration backgroundSessionConfiguration :"com.shinobicontrols. BackgroundDownload.BackgroundSessions" ;backgroundSessio

26、n = NSURLSession sessionWithConfiguration :config delegate :self delegateQueue :nil;);return backgroundSession; -(void )startDownBackgroundif(self.isBackGround )NSString *url =" phone/conceptual/iphoneosprogrammingguide/iphoneapp programmingguide.pdf" ;NSURLRequest *request = NSURLRequest

27、requestWithURL :NSURL URLWithString :url;self .downloadTask = self .urlSession downloadTaskWithRequest :request;/ Start the downloadself .downloadTask resume ;-(void )stopDownBackgroundself .downloadTask cancel ;#pragma mark NSURLSessionDelegate- (void )URLSession:( NSURLSession *)session downloadTa

28、sk:( NSURLSessionDownloadTask *)downloadTask didWriteData:( int64_t )bytesWritten totalBytesWritten:( int64_t )totalBytesWrittentotalBytesExpectedToWrite:( int64_t )totalBytesExpectedTo Writedouble currentProgress = totalBytesWritten /(double )totalBytesExpectedToWrite;NSString *percentStr = NSNumbe

29、rFormatter localizedStringFromNumber :NSNumber numberWithDouble :currentProgress numberStyle :NSNumberFormatterPercentStyle ;NSLog ("当前下载 %" ,percentStr);- (void )URLSession:( NSURLSession *)session downloadTask:( NSURLSessionDownloadTask *)downloadTask didFinishDownloadingToURL:( NSURL *)

30、locationNSLog (" 下载成功 ");NSLog ("下载的文件路径： %" ,location);NSError *error;NSFileManager *fileManager = NSFileManager defaultManager ;NSString *documentDir = self getFMCachePath ;NSString *destinationFilename = downloadTask. originalRequest .URL .lastPathComponent ;NSArray *array=des

31、tinationFilename componentsSeparatedByString :"/" ;NSString *createPath = NSString stringWithFormat :"%" ,documentDir;self CreatePath :createPath;NSString *savedPath = NSString stringWithFormat :"%/%" ,createPath,array lastObject ;NSURL *destinationURL = NSURL fileURLWithPath :savedPath;if (fileManager fileExistsAtPath :des