IOS 代码片段 (Update!)

re_reference

1、分享到Facebook连接。
http://m.facebook.com/sharer.php?u=URL&t=标题

2、移除ABPeoplePickerNavigationController右边的Cancel按钮
    ABPeoplePickerNavigationController *picker = [[ABPeoplePickerNavigationController alloc] init];    picker.delegate = self;.................- (void)navigationController:(UINavigationController *)navigationController      willShowViewController:(UIViewController *)viewController                    animated:(BOOL)animated {    // Here we want to remove the 'Cancel' button, but only if we're showing    // either of the ABPeoplePickerNavigationController's top two controllers    viewController.navigationItem.rightBarButtonItem = nil;}
摘自：http://stackoverflow.com/questions/1611499/abpeoplepickernavigationcontroller-remove-cancel-button-without-using-privat

3.ios multipart request related code:
- (void) uploadPicture{        UIImage *img = [UIImage imageNamed:@"icon.png"];    NSData *imageData = UIImageJPEGRepresentation(img, 90);    //Here i tried 2 ways of getting the data for uploading, but both don't work.        // create the URL    NSURL *postURL = [NSURL URLWithString:@"http://*********/PictureUpload"];        // create the connection    NSMutableURLRequest *postRequest = [NSMutableURLRequest requestWithURL:postURL cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:20.0];        // change type to POST (default is GET)    [postRequest setHTTPMethod:@"POST"];        // just some random text that will never occur in the body    NSString *stringBoundary = @"0xKhTmLbOuNdArY---This_Is_ThE_BoUnDaRyy---pqo";        // header value, user session ID added    NSString *headerBoundary = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",                                stringBoundary];        // set header    [postRequest addValue:headerBoundary forHTTPHeaderField:@"Content-Type"];    // create data    NSMutableData *postBody = [NSMutableData data];        // text part    [postBody appendData:[[NSString stringWithFormat:@"--%@\r\n", stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];    [postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"title\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];    [postBody appendData:[@"hello" dataUsingEncoding:NSUTF8StringEncoding]];    [postBody appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];        // media/image part    [postBody appendData:[[NSString stringWithFormat:@"--%@\r\n", stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];    [postBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"file\"; filename=\"%@.jpeg\"\r\n", @"helloImage"] dataUsingEncoding:NSUTF8StringEncoding]];    [postBody appendData:[@"Content-Type: image/jpeg\r\n" dataUsingEncoding:NSUTF8StringEncoding]];    [postBody appendData:[NSData dataWithData:imageData]];    [postBody appendData:[@"Content-Transfer-Encoding: binary\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];        // final boundary    [postBody appendData:[[NSString stringWithFormat:@"--%@--\r\n", stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];    NSString *s = [[NSString alloc] initWithData:postBody encoding:NSASCIIStringEncoding];    NSLog(@"%@", s);        // add body to post    [postRequest setHTTPBody:postBody];        // pointers to some necessary objects    NSURLResponse* response;    NSError* error;        // synchronous filling of data from HTTP POST response    NSData *responseData = [NSURLConnection sendSynchronousRequest:postRequest returningResponse:&response error:&error];        [NSURLConnection sendAsynchronousRequest:postRequest queue:[NSOperationQueue currentQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {        if (error)        {            NSLog(@"Error: %@", [error localizedDescription]);        }                // convert data into string        NSString *responseString = [[NSString alloc] initWithBytes:[responseData bytes]                                                            length:[responseData length]                                                          encoding:NSUTF8StringEncoding];                // see if we get a welcome result        NSLog(@"%@", responseString);    }];}
See http://stackoverflow.com/questions/8561403/multipart-formdata-image-upload-get-the-file
See https://gist.github.com/1354221
See http://en.wikipedia.org/wiki/MIME

4.Popup 效果弹出视图
CGAffineTransform transform = CGAffineTransformIdentity;    [self.view setTransform:CGAffineTransformScale(transform, 0.3, 0.3)];        [UIView animateWithDuration:0.2 animations:^{        [self.view setTransform:CGAffineTransformScale(transform, 1.1, 1.1)];    } completion:^(BOOL finished) {        [UIView animateWithDuration:0.13 animations:^{            [self.view setTransform:CGAffineTransformScale(CGAffineTransformIdentity, 0.9, 0.9)];        } completion:^(BOOL finished) {            [UIView animateWithDuration:0.13 animations:^{                [self.view setTransform:CGAffineTransformScale(CGAffineTransformIdentity, 1.0, 1.0)];            } completion:^(BOOL finished) {                //do nothing            }];        }];    }];

5.上下摇晃动画效果
CALayer*viewLayer=[self.inputHolderView layer];        CABasicAnimation*animation=[CABasicAnimation animationWithKeyPath:@"transform"];        animation.duration=0.1;        animation.repeatCount = 4;        animation.autoreverses=YES;        animation.fromValue=[NSValue valueWithCATransform3D:CATransform3DRotate(viewLayer.transform, -0.03, 0.0, 0.0, 0.05)];        animation.toValue=[NSValue valueWithCATransform3D:CATransform3DRotate(viewLayer.transform, 0.03, 0.0, 0.0, 0.05)];        [viewLayer addAnimation:animation forKey:@"wiggle"];

6.检查ARC的宏
#if !__has_feature(objc_arc)    [result autorelease];#endif