Upload files to the server and upload files to the server

Upload files to the server and upload files to the server

// Upload image-(void) showActionSheet {// call out the following menu button here: myActionSheet = [[UIActionSheet alloc] initWithTitle: nil delegate: self cancelButtonTitle: @ "cancel" destructiveButtonTitle: nil otherButtonTitles: @ "enable camera", @ "get from cell phone album", nil]; [myActionSheet showInView: self. view]; [myActionSheet release];}-(void) actionSheet :( UIActionSheet *) actionSheet clickedButtonAtIndex :( NSInteger) buttonIndex {// response if (buttonInde) X = myActionSheet. cancelButtonIndex) {NSLog (@ "cancel");} switch (buttonIndex) {case 0: // open the camera to take a photo [self takePhoto]; break; case 1: // open the local album [self LocalPhoto]; break ;}// start the photo-(void) takePhoto {UIImagePickerControllerSourceType sourceType = Hangzhou; if ([UIImagePickerController isSourceTypeAvailable: Hangzhou]) {UIImagePickerController * Picker = [[UIImagePickerController alloc] init]; picker. delegate = self; // set the picker that can be edited for the image taken. allowsEditing = YES; picker. sourceType = sourceType; [picker release]; [self presentViewController: picker animated: YES completion: nil];} else {NSLog (@ "simulate that the camera cannot be turned on, please use ") ;}/// open the local album-(void) LocalPhoto {UIImagePickerController * picker = [[UIImagePickerController alloc] init]; picker. sourceType = UIImage PickerControllerSourceTypePhotoLibrary; picker. delegate = self; // set the selected image to be edited by picker. allowsEditing = YES; [self presentViewController: picker animated: YES completion: nil]; [picker release];} // enter the following link after selecting an image-(void) imagePickerController :( UIImagePickerController *) picker didFinishPickingMediaWithInfo :( NSDictionary *) info {NSString * type = [info objectForKey: UIImagePickerControllerMediaType]; // when the selected type is image If ([type ispolictostring: @ "public. image "]) {NSLog (@" you selected this image "); // convert the image to NSData UIImage * image = [info objectForKey: @" UIImagePickerControllerOriginalImage "]; NSData * data; if (UIImagePNGRepresentation (image) = nil) {data = UIImageJPEGRepresentation (image, 1.0);} else {data = UIImagePNGRepresentation (image );} // path to save the image // put the image in the documents folder of the sandbox. NSString * DocumentsPath = [NSHomeDirectory () st RingByAppendingPathComponent: @ "Documents"]; // File Manager NSFileManager * fileManager = [NSFileManager defaultManager]; // copy the data object converted from the image to the sandbox and save it as image.png [fileManager createDirectoryAtPath: documentsPath withIntermediateDirectories: YES attributes: nil error: nil]; [fileManager createFileAtPath: [DocumentsPath stringByAppendingString: @ "/image.png"] contents: data attributes: nil]; // obtain the complete path filePath of the image in the selected sandbox. = [[NSString alloc] initWithFormat: @ "% @", DocumentsPath, @ "/image.png"]; // close the album interface [picker dismissViewControllerAnimated: YES completion: nil]; [self imageUpload: image] ;}}- (void) imagePickerControllerDidCancel :( UIImagePickerController *) picker {NSLog (@ "you have canceled image Selection"); [picker dismissViewControllerAnimated: YES completion: nil];} // Method for uploading images to the server. The ASIFormDataRequest method-(void) imageUpload :( UIImage *) image {U IImage * im = [UIImage imageWithContentsOfFile: filePath]; // obtain the image NSData * data = UIImagePNGRepresentation (im) through the path of the image ); // obtain image data/* There are two methods for obtaining images in ios: UIImageJPEGRepresentation, one is UIImagePNGRepresentation. The former obtains much smaller data than the latter .. * // Server address NSURL * url = [NSURL URLWithString: @ "Write Your Server Upload address here"]; aRequest = [[ASIFormDataRequest alloc] initWithURL: url]; [aRequest setDelegate: self]; // proxy [aRequest setRequestMethod: @ "POST"]; // this parameter is not very clear [aRequest addData: data withFileName: @ "test.png" andContentType: @ "image/png" forKey: @ "file"]; [aRequest addRequestHeader: @ "Content-Type" value: @ "multipart/form-data"]; // The value here must be consistent with that on the server [aReques T startAsynchronous]; // start. Asynchronous [aRequest setDidFinishSelector: @ selector (headPortraitSuccess)]; // The headPortraitSuccess method is automatically triggered when the request succeeds [aRequest setDidFailSelector: @ selector (headPortraitFail)]; // if the request fails, the headPortraitFail method is automatically triggered.}-(void) headPortraitSuccess {NSData * myResponseData = [aRequest responseData]; // when obtaining data: during debugging, the value of myResponseData is always nil. Why? // Convert the received data to the NSString type and print the NSString * result = [[NSString alloc] initWithData: myResponseData encoding: NSUTF8StringEncoding]; NSLog (@ "result ------------> % @", result); NSDictionary * data = [result encoding: JKParseOptionLooseUnicode]; NSArray * imgArray = [data objectForKey: @ "data"]; NSString * imgpath = @ "http://twww.51qed.com"; if ([imgArray count]) {NSDictionary * imgInfo = [ImgArray objectAtIndex: 0]; imgpath = [imgpath stringByAppendingString: [imgInfo objectForKey: @ "img"]; NSLog (@ "imgpath ------------ >%@", imgpath );} // set H5 image updates. ios calls the JS Code [webview stringByEvaluatingJavaScriptFromString: [NSString stringWithFormat: @ "setNewImg ('% @');", imgpath]; NSLog (@ "Upload successful! "); [ARequest release];}-(void) headPortraitFail {NSLog (@" Upload Failed! ");} // Start request-(void) requestStarted :( ASIHTTPRequest *) request {NSLog (@" Start request! ");} @ End

Import required

<pre name="code" class="objc">#import "ASIHTTPRequest.h"#import "ASIFormDataRequest.h"#import "JSONKit.h"

These three header files