post image

NSData *imageData = UIImageJPEGRepresentation(self.image.image,0);

NSString *url=@"http://test/postimage";

 NSURL *theURL = [NSURL URLWithString:url];

    NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:theURL cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:8.0f];

    [theRequest setHTTPMethod:@"POST"];

    [theRequest setValue:@"application/json" forHTTPHeaderField:@"Accept"];

    [theRequest setValue:@"image/jpg" forHTTPHeaderField:@"Content-Type"];

    theRequest.timeoutInterval=10.0;

    [theRequest setValue:[NSString stringWithFormat:@"%lu", (unsigned long)[imageData length]] forHTTPHeaderField:@"Content-Length"];

    [theRequest setHTTPBody: imageData];

    

    NSString *result= [self HttpResult:theRequest];

    

字串只留下數字，或只留下文字

using System.Text.RegularExpressions;

string  inputStr = "abc123";

 var outputNum = Regex.Replace( inputStr, @"[\D-]", string.Empty); //只有數字被保留

 var outputStr = Regex.Replace( inputStr, @"[\d-]", string.Empty); //只有文字被保留

UIButton Title

UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];

放置 set the button title by state

[rightButton setTitle:cid forState:UIControlStateNormal];

取得 get the button title by state

[rightButton titleForState: UIControlStateNormal]

狀態 state can change you want

 UIControlStateNormal       //正常

 UIControlStateHighlighted  

 UIControlStateDisabled    //無作用狀態

 UIControlStateSelected

 UIControlStateFocused 

 UIControlStateApplication  

 UIControlStateReserved