iOS 图片的选择（包括相册和相机）并且将图片转换成base64 的字符串

最新推荐文章于 2024-10-31 16:13:30 发布

原创最新推荐文章于 2024-10-31 16:13:30 发布 · 1.1k 阅读

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本文介绍了一个简单的 iOS 应用程序中实现图片选择器的方法。通过使用 UIActionSheet 和 UIImagePickerController，用户可以从相机拍摄照片或者从本地相册选取图片，并进行编辑。文章详细解释了如何配置 UIImagePickerController 的属性以适应不同来源的图片选择。

图片单个选择

- (void)clickHeadPicture{
    
    UIActionSheet * action = [[UIActionSheet alloc] initWithTitle:@"选择相片" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:@"相机" otherButtonTitles:@"本地相册", nil];
    
    [action showInView:self.view];
}

#pragma mark - UIActionSheet代理
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{
    
    if (buttonIndex == 2)
    {
        return ;
    }
    
    //创建图片选择器
    UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
    //设置代理
    imagePicker.delegate = self;
    //设置图片选择属性
    imagePicker.allowsEditing = YES;
    if (buttonIndex == 0) { //照相
        if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){//真机打开
            
            imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
            
        }else{// 模拟器打开
            
            NSLog(@"模拟器打开");
            return;
            
        }
        
    }else{//相册
        
        imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    }
    // 进去选择器
    
    [self presentViewController:imagePicker animated:YES completion:nil];
    self.modalPresentationStyle = UIModalPresentationOverCurrentContext;
}
#pragma mark - UIImagePickerControllerDelegate
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info
{
    
    UIImage *infoImage = info[UIImagePickerControllerEditedImage];
    contactImage = infoImage;
    
    [self dismissViewControllerAnimated:YES completion:nil];
  
}



#pragma mark --图片base64
- (NSString *)imageBase64Description:(UIImage *)image
{
    NSData * data = UIImageJPEGRepresentation(image, 0.2f);
    NSString * encode = [data base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithLineFeed];
    
    return encode;
}