第十五天 图片选择

#pragma mark - UIActionSheetDelegate
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
    NSUInteger sourceType = 0;
    if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
        switch (buttonIndex) {
            case 0:
                sourceType = UIImagePickerControllerSourceTypeCamera;
                break;
            case 1:
                sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
                break;
            case 2:
                return;
        }
    }
    else {
        if (buttonIndex == 1) {
            return;
        }
        else {
            sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
        }
    }

    UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
    imagePickerController.delegate = self;
    imagePickerController.allowsEditing = YES;
    imagePickerController.sourceType = sourceType;
    [self showDetailViewController:imagePickerController sender:nil];
}


#pragma mark - UIImagePickerControllerDelegate
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    [picker dismissViewControllerAnimated:YES completion:nil];
    UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage];
    [self.avatarButton setImage:image forState:UIControlStateNormal];
}


- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
    [self dismissViewControllerAnimated:YES completion:nil];
}