ios利用 AFN 上传相册或者拍照图片

#import "QTXImagePicker.h"

@interface QTXImagePicker()<UIActionSheetDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate>

@property (nonatomic, weak) UIViewController *viewController;
@property (nonatomic, copy) QTXImagePickerFinishAction finishAction;
@property (nonatomic, assign) BOOL allowsEditing;

@end

static QTXImagePicker *qtxImagePickerInstance = nil;

@implementation QTXImagePicker

+ (void)showImagePickerFromViewController:(UIViewController *)viewController allowsEditing:(BOOL)allowsEditing finishAction:(QTXImagePickerFinishAction)finishAction {
  if (qtxImagePickerInstance == nil) {
    qtxImagePickerInstance = [[QTXImagePicker alloc] init];
  }

  [qtxImagePickerInstance showImagePickerFromViewController:viewController
                        allowsEditing:allowsEditing
                        finishAction:finishAction];
}

- (void)showImagePickerFromViewController:(UIViewController *)viewController
              allowsEditing:(BOOL)allowsEditing
               finishAction:(QTXImagePickerFinishAction)finishAction {
  _viewController = viewController;
  _finishAction = finishAction;
  _allowsEditing = allowsEditing;

  UIActionSheet *sheet = nil;

  if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
    sheet = [[UIActionSheet alloc] initWithTitle:nil
                      delegate:self
                  cancelButtonTitle:@"取消"
               destructiveButtonTitle:nil
                  otherButtonTitles:@"拍照", @"从相册选择", nil];
  }else {
    sheet = [[UIActionSheet alloc] initWithTitle:nil
                      delegate:self
                  cancelButtonTitle:@"取消"
               destructiveButtonTitle:nil
                  otherButtonTitles:@"从相册选择", nil];
  }

  UIView *window = [UIApplication sharedApplication].keyWindow;
  [sheet showInView:window];
}

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
  NSString *title = [actionSheet buttonTitleAtIndex:buttonIndex];
  if ([title isEqualToString:@"拍照"]) {
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.delegate = self;
    picker.sourceType = UIImagePickerControllerSourceTypeCamera;
    picker.allowsEditing = _allowsEditing;
    [_viewController presentViewController:picker animated:YES completion:nil];

  }else if ([title isEqualToString:@"从相册选择"]) {
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
//    [picker.navigationBar setBarTintColor:QTXNavColor]; // 修改相册的导航条的背景颜色
    picker.delegate = self;
    picker.allowsEditing = YES;
    picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    [_viewController presentViewController:picker animated:YES completion:nil];

  }else {
    qtxImagePickerInstance = nil;
  }
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
  UIImage *image = info[UIImagePickerControllerEditedImage];
  if (image == nil) {
    image = info[UIImagePickerControllerOriginalImage];
  }

  if (_finishAction) {
    _finishAction(image);
  }

  [picker dismissViewControllerAnimated:YES completion:^{}];

  qtxImagePickerInstance = nil;
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
  if (_finishAction) {
    _finishAction(nil);
  }

  [picker dismissViewControllerAnimated:YES completion:^{}];

  qtxImagePickerInstance = nil;
}

@end

								 
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