ios调用相册或相机上传图片

最新推荐文章于 2024-03-09 11:07:33 发布

simmyoung

最新推荐文章于 2024-03-09 11:07:33 发布

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分类专栏： ios

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本文介绍如何在iOS应用中实现照片上传功能，包括通过相机拍摄、从相册选取照片，并展示了如何使用UIActionSheet和UIImagePickerController来完成这些操作。

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先添加一个button用来点击进行上传，点击button触发button事件：

- (IBAction)choosePhoto:(id)sender
{
    UIActionSheet *choosePhotoActionSheet;  //定义一个actionsheet进行选择
    
    if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
        choosePhotoActionSheet = [[UIActionSheet alloc] initWithTitle:NSLocalizedString(@"choose_photo", @"")
                                                             delegate:self 
                                                    cancelButtonTitle:NSLocalizedString(@"cancel", @"") 
                                               destructiveButtonTitle:nil
                                                    otherButtonTitles:NSLocalizedString(@"take_photo_from_camera", @""), NSLocalizedString(@"take_photo_from_library", @""), nil];
    } else {
        choosePhotoActionSheet = [[UIActionSheet alloc] initWithTitle:NSLocalizedString(@"choose_photo", @"")
                                                             delegate:self 
                                                    cancelButtonTitle:NSLocalizedString(@"cancel", @"") 
                                               destructiveButtonTitle:nil
                                                    otherButtonTitles:NSLocalizedString(@"take_photo_from_library", @""), nil];
    }
    
    [choosePhotoActionSheet showInView:self.view];
    [choosePhotoActionSheet release];
}

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex 为actionsheet选择后的回调

UIImagePickerControllerSourceType的三种情况（develeper document的定义）：

typedef NS_ENUM(NSInteger, UIImagePickerControllerSourceType) {

UIImagePickerControllerSourceTypePhotoLibrary, //用户自定义的图片库

UIImagePickerControllerSourceTypeCamera, //通过照相机获取的图片

UIImagePickerControllerSourceTypeSavedPhotosAlbum //系统的相片库

};

- (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 presentModalViewController:imagePickerController animated:YES];
}


#pragma mark - UIImagePickerControllerDelegate
//由picker中所获取到的info后，用于处理info的函数
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info 
{
	[picker dismissModalViewControllerAnimated:YES];
	self.photo = [info objectForKey:UIImagePickerControllerEditedImage];  //photo为存放获取到的相片
	[self.photoButton setImage:self.photo forState:UIControlStateNormal]; //photobutton为存放上传相片的button
}


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