分享pdf iOS

点击某个分享按钮，调起系统的 UIActivityViewController，实现如下效果

 

 

 

 

//
//  PDFShareViewController.m
//  QuFangApp
//
//  Created by huangzengsong on 2025/4/17.
//

#import "PDFShareViewController.h"

@interface PDFShareViewController ()
@property (nonatomic, copy) NSString *webURLString;
@property (nonatomic, copy) NSString *webTitleString;

@end

@implementation PDFShareViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    self.webURLString = @"https://testapi08.fadada.com/api/downLoadContract.api?contract_id=769679609632403456&v=2.0&msg_digest=MjNCMkE0RDIyRkVCQzk5QjI3M0MzQ0JBRDc5RDNFMzdGRTYwNjUzNQ==&app_id=405812&timestamp=20250417105827&";
    self.webTitleString = @"盛景花园9-1-203号[4].pdf";
}

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
    [self sharePdf];
}

/// 分享pdf
-(void)sharePdf{
    /// 先查询是否已经下载如果已经下载 直接分享 如果未下载，现在pdf再分享到直接位置
    [self downloadAndShare];
}

- (void)downloadAndShare {
    /// 获取pdf名字
    NSString *pdfFileName =  self.webTitleString;
    /// 查询文件是否已经存在
    if (![self pdfFileExistsWithName:pdfFileName]) {
        /// 获取下载链接
        NSURL *pdfURL = [NSURL URLWithString:self.webURLString];
        
        NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
        NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration];
        __weak typeof(self) weakself =self;
        NSURLSessionDownloadTask *downloadTask = [session downloadTaskWithURL:pdfURL completionHandler:^(NSURL *location, NSURLResponse *response, NSError *error) {
            if (error) {
                NSLog(@"PDF文件下载失败: %@", error);
            } else {
                NSString *destinationPath = [self pathForPDFFileWithName:pdfFileName];
                NSURL *destinationURL = [NSURL fileURLWithPath:destinationPath];
                NSError *moveError;
                [[NSFileManager defaultManager] moveItemAtURL:location toURL:destinationURL error:&moveError];
                if (moveError) {
                    NSLog(@"下载PDF完成移动在指定路径失败: %@", moveError);
                } else {
                    NSLog(@"PDF文件下载成功并保存到指定路径: %@", destinationURL);
                    /// 发起分享
                    
                    dispatch_async(dispatch_get_main_queue(), ^{
                        // 这里写需要回到主线程执行的代码（通常是 UI 操作）
                        [weakself startToSharePdf:pdfFileName];
                    });
                }
            }
        }];
        [downloadTask resume];
    }else{
        // 发起分享
        dispatch_async(dispatch_get_main_queue(), ^{
            // 这里写需要回到主线程执行的代码（通常是 UI 操作）
            [self startToSharePdf:pdfFileName];
        });
    }
}

-(void)startToSharePdf:(NSString *)pdfFileName{
    NSArray *activityItems = @[[NSURL fileURLWithPath:[self pathForPDFFileWithName:pdfFileName]]];

    UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:activityItems applicationActivities:nil];
    [self presentViewController:activityViewController animated:YES completion:nil];
}

- (NSString *)pathForPDFFileWithName:(NSString *)fileName {
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths firstObject];
    return [documentsDirectory stringByAppendingPathComponent:fileName];
}

- (BOOL)pdfFileExistsWithName:(NSString *)fileName {
    NSString *filePath = [self pathForPDFFileWithName:fileName];
    return [[NSFileManager defaultManager] fileExistsAtPath:filePath];
}


/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end

 

 

调整节目样式 可参考

https://blog.csdn.net/liushuo19920327/article/details/124208972