iOS图片上传

- (void)createimageHeader
{
_buttonHeader = [UIButtonbuttonWithType:UIButtonTypeCustom];
_buttonHeader.frame =CGRectMake(100,100, 100,100);
_buttonHeader.backgroundColor = [UIColorblueColor];
[_buttonHeadersetTitle:@"点击"forState:UIControlStateNormal];
[self.viewaddSubview:_buttonHeader];
[_buttonHeaderaddTarget:selfaction:@selector(click:)forControlEvents:UIControlEventTouchUpInside];
}
- (void)click:(UIButton *)sender
{
UIActionSheet *sheet = [[UIActionSheetalloc] initWithTitle:nildelegate:selfcancelButtonTitle:@"取消"destructiveButtonTitle:nilotherButtonTitles:@"相册",@"拍照",nil];
[sheetshowInView:self.view];
}
#pragma mark - delegate
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == [actionSheet cancelButtonIndex]) {
return;
}
if(buttonIndex == 0)
{
if ([UIImagePickerControllerisSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary])
{
UIImagePickerController *imgPicker = [[UIImagePickerControlleralloc]init];
imgPicker.delegate =self;
imgPicker.sourceType =UIImagePickerControllerSourceTypePhotoLibrary;
imgPicker.modalTransitionStyle =UIModalTransitionStyleCoverVertical;
imgPicker.allowsEditing =YES;
[selfpresentViewController:imgPicker animated:YEScompletion:nil];
}
}
else if(buttonIndex ==1)
{
if([UIImagePickerControllerisSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
UIImagePickerController *imgPicker = [[UIImagePickerControlleralloc]init];
imgPicker.delegate =self;
imgPicker.sourceType =UIImagePickerControllerSourceTypeCamera;
imgPicker.modalTransitionStyle =UIModalTransitionStyleCoverVertical;
imgPicker.allowsEditing =YES;
[selfpresentViewController:imgPicker animated:YEScompletion:nil];
}
else
{
NSLog(@"摄像头不可用");
}
}
}

pragma mark - imagePicker

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{

[selfdismissViewControllerAnimated:YEScompletion:^{

}];
/**
*  UIImage取出来,赋值给button
*/
_imageHeader = [info objectForKey:UIImagePickerControllerEditedImage];
[_buttonHeadersetBackgroundImage:[selfimageWithImageSimple:_imageHeaderscaledToSize:CGSizeMake(90,90)] forState:UIControlStateNormal];
// 在这里可以加上传图片的方法
[selfloadData];
}

- (UIImage*)imageWithImageSimple:(UIImage*)image scaledToSize:(CGSize)newSize
{
// Create a graphics image context
UIGraphicsBeginImageContext(newSize);

// Tell the old image to draw in this new context, with the desired
// new size
[imagedrawInRect:CGRectMake(0,0,newSize.width,newSize.height)];

// Get the new image from the context
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();

// End the context
UIGraphicsEndImageContext();

// Return the new image.
return newImage;
}
#pragma mark -上传
- (void)loadData
{
AFHTTPSessionManager *manager = [AFHTTPSessionManagermanager];
manager.responseSerializer = [AFHTTPResponseSerializerserializer];
manager.requestSerializer.timeoutInterval =15;
// _imageHeader 相册选择或者拍照所获得的UIImage;
NSData *imageData = UIImageJPEGRepresentation(_imageHeader,1.0);
NSString *urlStr = @"url";

[managerPOST:urlStr parameters:nilconstructingBodyWithBlock:^(id<AFMultipartFormData> _Nonnull formData) {
/**
*解析
*在网络开发中，上传文件时，是文件不允许被覆盖，文件重名
*要解决此问题，
*可以在上传时使用当前的系统时间作为文件名(当然如果有需要还可以拼接更多需要的比如用户ID)
*/
NSDateFormatter *formatter = [[NSDateFormatteralloc] init];
formatter.dateFormat =@"yyyyMMddHHmmss";
NSString *str = [formatter stringFromDate:[NSDatedate]];
NSString *fileName = [NSStringstringWithFormat:@"%@.jpg", str];

// 上传图片，以文件流的格式
/**
*filedata : 图片的data
*name     : 后台的提供的字段
*mimeType : 类型
*/
[formDataappendPartWithFileData:imageData name:@"icon"fileName:fileName mimeType:@"image/jpeg"];
}success:^(NSURLSessionDataTask *_Nonnull task, id _Nullable responseObject) {
NSLog(@"1");
}failure:^(NSURLSessionDataTask *_Nullable task, NSError *_Nonnull error) {
NSLog(@"2");
}];

}