进度条相关的操作都定义在

ASIProgressDelegate .h 文件中。

而且所有的方法都是optional的。

ipone上更新进度条的方法 ：- (void)setProgress:(float)newProgress;

#if TARGET_OS_IPHONE
- (void)setProgress:(float)newProgress;
#else
- (void)setDoubleValue:(double)newProgress;
- (void)setMaxValue:(double)newMax;
#endif

并且这个方法 直接是 @interface UIProgressView : UIView <NSCoding> 类中实现的。所有可以直接把UIProgressView 的实例赋值给ASIHTTPRequest下面的两个属性，而无需实现 ASIProgressDelegate 协议。

// Delegate for displaying upload progress (usually an NSProgressIndicator, but you can supply a different object and handle this yourself)
 id <ASIProgressDelegate> uploadProgressDelegate;
 
 // Delegate for displaying download progress (usually an NSProgressIndicator, but you can supply a different object and handle this yourself)
 id <ASIProgressDelegate> downloadProgressDelegate;

更新进度条的方法

// Updates upload progress (notifies the queue and/or uploadProgressDelegate of this request)
- (void)updateUploadProgress;

// Updates download progress (notifies the queue and/or uploadProgressDelegate of this request)
- (void)updateDownloadProgress;

今天，遇见了一个很奇怪的问题，在Android模拟器上运行程序时，没有问题，可是到真机上运行，则会报ParseDate的异常，后来问了大神，是这样解决的，将一个Date类型的数据不直接序列化，而是将它所对应的秒来进行序列化，如下

//@Element(required = false)  这个一定不需要 注释掉

Date birthDay;

@Element(required = false)

public long getBirthdayTimeMills {

Date date = getBirthday();

if(date!= null) {

return date.getTime();

} else {

return -1;

}

}

@Element(required = false)

public void setBirthdayTimeMills(long birthdayTimeMills) {

if(birthdayTimeMills != -1) {

Date date = new Date(birthdayTimeMills);

}

}

session 相关的变量

// In memory caches of credentials, used on when useSessionPersistence is YES
static NSMutableArray *sessionCredentialsStore = nil;
static NSMutableArray *sessionProxyCredentialsStore = nil;

// This lock mediates access to session credentials
static NSRecursiveLock *sessionCredentialsLock = nil;

// We keep track of cookies we have received here so we can remove them from the sharedHTTPCookieStorage later
static NSMutableArray *sessionCookies = nil;

session信息被存储的内存中。

开启session ，useSessionPersistence = yes。

- (void)readResponseHeaders方法中生产并存储session信息

 // Authentication succeeded, or no authentication was required
 if (![self authenticationNeeded]) {

  // Did we get here without an authentication challenge? (which can happen when shouldPresentCredentialsBeforeChallenge is YES and basic auth was successful)
  if (!requestAuthentication && [self username] && [self password] && [self useSessionPersistence]) {
   
   NSMutableDictionary *newCredentials = [NSMutableDictionary dictionaryWithCapacity:2];
   [newCredentials setObject:[self username] forKey:(NSString *)kCFHTTPAuthenticationUsername];
   [newCredentials setObject:[self password] forKey:(NSString *)kCFHTTPAuthenticationPassword];
   
   // Store the credentials in the session 
   NSMutableDictionary *sessionCredentials = [NSMutableDictionary dictionary];
   [sessionCredentials setObject:newCredentials forKey:@"Credentials"];
   [sessionCredentials setObject:[self url] forKey:@"URL"];
   [sessionCredentials setObject:(NSString *)kCFHTTPAuthenticationSchemeBasic forKey:@"AuthenticationScheme"];
   [[self class] storeAuthenticationCredentialsInSessionStore:sessionCredentials];
  }
 }

 [newCredentials setObject:[self username] forKey:(NSString *)kCFHTTPAuthenticationUsername];
   [newCredentials setObject:[self password] forKey:(NSString *)kCFHTTPAuthenticationPassword];