iOS文件預(yù)覽分享小技能示例

更新時間：2022年08月16日 11:36:01 作者：公眾號iOS逆向

這篇文章主要為大家介紹了iOS文件預(yù)覽分享小技能示例詳解，有需要的朋友可以借鑒參考下，希望能夠有所幫助，祝大家多多進步，早日升職加薪

前言

應(yīng)用場景：文件下載、打印

I 第三方SDK分享文件

1.1 微信SDK

/**
enum WXScene {
    WXSceneSession  = 0, 
    WXSceneTimeline = 1,
    WXSceneFavorite = 2,
};
文件真實數(shù)據(jù)內(nèi)容
 * @note 大小不能超過10M
 */
@property (nonatomic, retain) NSData    *fileData;
*/
- (void)sendFileContent
{
    WXMediaMessage *message = [WXMediaMessage message];
    message.title = @"ML.pdf";
    message.description = @"Pro CoreData";
    [message setThumbImage:[UIImage imageNamed:@"res2.jpg"]];
    WXFileObject *ext = [WXFileObject object];
    ext.fileExtension = @"pdf";
    NSString* filePath = [[NSBundle mainBundle] pathForResource:@"ML" ofType:@"pdf"];
    ext.fileData = [NSData dataWithContentsOfFile:filePath];
    //+ (nullable instancetype)dataWithContentsOfURL:(NSURL *)url;
    message.mediaObject = ext;
    SendMessageToWXReq* req = [[[SendMessageToWXReq alloc] init]autorelease];
    req.bText = NO;
    req.message = message;
    req.scene = WXSceneSession;
    [WXApi sendReq:req completion:nil];
}

1.2 友盟SDK

#pragma mark - UMFileObject
/*! @brief 多媒體消息中包含的文件數(shù)據(jù)對象
 *
 * @see UMShareObject
 */
@interface UMShareFileObject : UMShareObject
/** 文件后綴名
 * @note 長度不超過64字節(jié)
 */
@property (nonatomic, retain) NSString  *fileExtension;
/** 文件真實數(shù)據(jù)內(nèi)容
 * @note 大小不能超過10M
 */
@property (nonatomic, retain) NSData    *fileData;
/** 文件的名字(不包含后綴)
 * @note 長度不超過64字節(jié)
 */
@property (nonatomic, retain) NSString  *fileName;
@end

II 原生API的文件預(yù)覽及其他應(yīng)用打開

- (BOOL)presentOptionsMenuFromRect:(CGRect)rect inView:(UIView *)view animated:(BOOL)animated;
- (BOOL)presentOptionsMenuFromBarButtonItem:(UIBarButtonItem *)item animated:(BOOL)animated;
// Bypasses the menu and opens the full screen preview window for the item at URL.  Returns NO if the item could not be previewed.
// Note that you must implement the delegate method documentInteractionControllerViewControllerForPreview: to preview the document.
- (BOOL)presentPreviewAnimated:(BOOL)animated;//預(yù)覽文件
// Presents a menu allowing the user to open the document in another application.  The menu
// will contain all applications that can open the item at URL.
// Returns NO if there are no applications that can open the item at URL.
- (BOOL)presentOpenInMenuFromRect:(CGRect)rect inView:(UIView *)view animated:(BOOL)animated;//包括快速預(yù)覽菜單、打印、復(fù)制
- (BOOL)presentOpenInMenuFromBarButtonItem:(UIBarButtonItem *)item animated:(BOOL)animated;//不包括包括快速預(yù)覽菜單

獲取NSURL

//方式1：
    NSString* filePath = [[NSBundle mainBundle] pathForResource:@"ML" ofType:@"pdf"];
NSURL *url = [NSURL fileURLWithPath:filePath];
// 方式2
    //NSURL *url = [[NSBundle mainBundle] URLForResource:@"ML" withExtension:@"pdf"];

實例化UIDocumentInteractionController

UIDocumentInteractionController *documentController = [UIDocumentInteractionController interactionControllerWithURL:url];
documentController.delegate = self;//UIDocumentInteractionControllerDelegate

2.1 預(yù)覽文件

[documentController presentPreviewAnimated:YES]; // 預(yù)覽文件

2.2 文件分享

        CGRect rect = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
       [documentController presentOptionsMenuFromRect:rect inView:self.view  animated:YES];//包括快速預(yù)覽菜單、打印、復(fù)制
//        [documentController presentOpenInMenuFromRect:rect inView:self.view animated:YES];//不包括包括快速預(yù)覽菜單

2.3 控制是否顯示copy、 print、saveToCameraRoll

#pragma mark - UIDocumentInteractionControllerDelegate
- (UIViewController *)documentInteractionControllerViewControllerForPreview:(UIDocumentInteractionController *)interactionController{
    return self;
}
//
/**
 print: saveToCameraRoll:  copy:
 */
- (BOOL)documentInteractionController:(UIDocumentInteractionController *)controller canPerformAction:(SEL)action{
    NSLog(@"canPerformAction  %s %@ ", __func__,NSStringFromSelector(action));
    //NSStringFromSelector(_cmd)  //當(dāng)前選擇器的名字
//    return NO;不顯示copy print
    return YES;//顯示copy print
}
- (BOOL)documentInteractionController:(UIDocumentInteractionController *)controller performAction:(SEL)action{
    NSLog(@"canPerformAction  %s", __func__);
    return YES;//顯示copy print
//    return NO;
}

III 案例

3.1 文件下載和預(yù)覽

- (void)openfile:(CRMfilePreviewCellM*)m{
    //        NSURL *relativeToURL = [NSURL URLWithString:m.url ];//必須先下載，否則無法查看文件內(nèi)容
    [SVProgressHUD showWithStatus:@"加載中..."];
    NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:m.url]];
        [SVProgressHUD dismiss];
    if(data== nil){
        [SVProgressHUD showInfoWithStatus:@"文件下載失敗"];
        return ;
    }
    //            //用單例類 NSFileManager的對象,將文件寫入本地
    NSFileManager *fileManage = [NSFileManager defaultManager];
    NSString *tmp = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];
//    NSString *tmp = NSTemporaryDirectory();
    NSString *fileName = m.fileName;
    tmp =[tmp stringByAppendingPathComponent:fileName];
    BOOL isSuccess = [fileManage createFileAtPath:tmp contents:data attributes:nil];
    if(isSuccess){
            NSURL *url = [NSURL fileURLWithPath:tmp];
        UIDocumentInteractionController *documentController = [UIDocumentInteractionController interactionControllerWithURL:url];
        //UIDocumentInteractionController delegate must implement documentInteractionControllerViewControllerForPreview: to allow preview
        documentController.delegate = self;//UIDocumentInteractionControllerDelegate
        [documentController presentPreviewAnimated:YES]; // 預(yù)覽文件
    }
}
#pragma mark - UIDocumentInteractionControllerDelegate
- (UIViewController *)documentInteractionControllerViewControllerForPreview:(UIDocumentInteractionController *)interactionController{
    return self;
}
//
/**
 print: saveToCameraRoll:  copy:
 */
- (BOOL)documentInteractionController:(UIDocumentInteractionController *)controller canPerformAction:(SEL)action{
    NSLog(@"canPerformAction  %s %@ ", __func__,NSStringFromSelector(action));
    //NSStringFromSelector(_cmd)  //當(dāng)前選擇器的名字
//    return NO;不顯示copy print
    return YES;//顯示copy print
}
- (BOOL)documentInteractionController:(UIDocumentInteractionController *)controller performAction:(SEL)action{
    NSLog(@"canPerformAction  %s", __func__);
    return YES;//顯示copy print
//    return NO;
}

3.2 使用數(shù)據(jù)模型保存下載文件路徑

懶加載

    //        NSURL *relativeToURL = [NSURL URLWithString:m.url ];//必須先下載，否則無法查看文件內(nèi)容
- (NSString *)filePathFromUrl{
    if(_filePathFromUrl !=nil){
        return _filePathFromUrl;
    }
    NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:self.url]];
    if(data== nil){
        [SVProgressHUD showInfoWithStatus:@"文件下載失敗"];
        return nil;
    }
    //            //用單例類 NSFileManager的對象,將文件寫入本地
    NSFileManager *fileManage = [NSFileManager defaultManager];
    NSString *tmp = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];
//    NSString *tmp = NSTemporaryDirectory();
    NSString *fileName = self.fileName;
    tmp =[tmp stringByAppendingPathComponent:fileName];
    BOOL isSuccess = [fileManage createFileAtPath:tmp contents:data attributes:nil];
    _filePathFromUrl = tmp;
    if(!isSuccess){
        _filePathFromUrl = nil;
    }
    return _filePathFromUrl;
}

預(yù)覽文件

- (void)openfile:(CRMfilePreviewCellM*)m{
    if(!m.filePathFromUrl){
        return;
    }
            NSURL *url = [NSURL fileURLWithPath:m.filePathFromUrl];
        UIDocumentInteractionController *documentController = [UIDocumentInteractionController interactionControllerWithURL:url];
        //UIDocumentInteractionController delegate must implement documentInteractionControllerViewControllerForPreview: to allow preview
        documentController.delegate = self;//UIDocumentInteractionControllerDelegate
        [documentController presentPreviewAnimated:YES]; // 預(yù)覽文件
}

3.3 使用數(shù)據(jù)模型分享文件

@property (nonatomic,copy) NSString *fileName;
@property (nonatomic,copy) NSString *url;
//
@property (nonatomic,copy) NSString *filePathFromUrl;
/**
/** 文件真實數(shù)據(jù)內(nèi)容
 * @note微信文件分享 大小不能超過10M
 */
@property (nonatomic, retain) NSData    *fileData;
- (void)sendFileContent;
- (NSData *)fileData{
    if(_fileData==nil){
        NSString* filePath= [self filePathFromUrl];
        _fileData =[NSData dataWithContentsOfFile:filePath];
    }
    return _fileData;
}
- (void)sendFileContent
{
    WXMediaMessage *message = [WXMediaMessage message];
    message.title = self.fileName;
    message.description =self.fileName;
    [message setThumbImage:[UIImage imageNamed:self.iconName]];
    WXFileObject *ext = [WXFileObject object];
    ext.fileExtension =self.fileExtension;
    ext.fileData =self.fileData;
    //+ (nullable instancetype)dataWithContentsOfURL:(NSURL *)url;
    message.mediaObject = ext;
    SendMessageToWXReq* req = [[SendMessageToWXReq alloc] init];
    req.bText = NO;
    req.message = message;
    req.scene = WXSceneSession;
    [WXApi sendReq:req completion:nil];
}

3.4 清理緩存

獲取沙盒緩存路徑

+ (nullable NSString *)userCacheDirectory {
    NSArray<NSString *> *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
    return paths.firstObject;
}

清理沙河文件緩存

- (void)removeAllData {
    [self.fileManager removeItemAtPath:self.diskCachePath error:nil];
    [self.fileManager createDirectoryAtPath:self.diskCachePath
            withIntermediateDirectories:YES
                             attributes:nil
                                  error:NULL];
}

清理WKWebView的緩存

+ (void)clearWebCacheCompletion:(dispatch_block_t)completion {
    if (@available(iOS 9.0, *)) {
        NSSet *websiteDataTypes = [WKWebsiteDataStore allWebsiteDataTypes];
        NSDate *dateFrom = [NSDate dateWithTimeIntervalSince1970:0];
        [[WKWebsiteDataStore defaultDataStore] removeDataOfTypes:websiteDataTypes modifiedSince:dateFrom completionHandler:completion];
    } else {
        NSString *libraryDir = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES)[0];
        NSString *bundleId  =  [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleIdentifier"];
        NSString *webkitFolderInLib = [NSString stringWithFormat:@"%@/WebKit",libraryDir];
        NSString *webKitFolderInCaches = [NSString stringWithFormat:@"%@/Caches/%@/WebKit",libraryDir,bundleId];
        NSString *webKitFolderInCachesfs = [NSString stringWithFormat:@"%@/Caches/%@/fsCachedData",libraryDir,bundleId];
        NSError *error;
        /* iOS8.0 WebView Cache path */
        [[NSFileManager defaultManager] removeItemAtPath:webKitFolderInCaches error:&error];
        [[NSFileManager defaultManager] removeItemAtPath:webkitFolderInLib error:nil];
        /* iOS7.0 WebView Cache path */
        [[NSFileManager defaultManager] removeItemAtPath:webKitFolderInCachesfs error:&error];
        if (completion) {
            completion();
        }
    }
}

清理圖片緩存

+(void)clearCache:(NSString *)path{
    NSFileManager *fileManager=[NSFileManager defaultManager];
    if ([fileManager fileExistsAtPath:path]) {
        NSArray *childerFiles=[fileManager subpathsAtPath:path];
        for (NSString *fileName in childerFiles) {
            //如有需要，加入條件，過濾掉不想刪除的文件
            NSString *absolutePath=[path stringByAppendingPathComponent:fileName];
            [fileManager removeItemAtPath:absolutePath error:nil];
        }
    }
    //    [[SDImageCache sharedImageCache] cleanDisk];
    [[SDImageCache sharedImageCache] clearDiskOnCompletion:^{
    }];
}

以上就是iOS文件預(yù)覽分享小技能示例的詳細內(nèi)容，更多關(guān)于iOS文件預(yù)覽分享的資料請關(guān)注腳本之家其它相關(guān)文章！

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iOS文件預(yù)覽分享小技能示例

目錄

前言

I 第三方SDK分享文件

1.1 微信SDK

1.2 友盟SDK

II 原生API的文件預(yù)覽及其他應(yīng)用打開

2.1 預(yù)覽文件

2.2 文件分享

2.3 控制是否顯示copy、 print、saveToCameraRoll

III 案例

3.1 文件下載和預(yù)覽

3.2 使用數(shù)據(jù)模型保存下載文件路徑

3.3 使用數(shù)據(jù)模型分享文件

3.4 清理緩存

相關(guān)文章

最新評論

大家感興趣的內(nèi)容

最近更新的內(nèi)容

常用在線小工具

iOS文件預(yù)覽分享小技能示例

目錄

前言

I 第三方SDK分享文件

1.1 微信SDK

1.2 友盟SDK

II 原生API的文件預(yù)覽及其他應(yīng)用打開

2.1 預(yù)覽文件

2.2 文件分享

2.3 控制是否顯示copy、 print、saveToCameraRoll

III 案例

3.1 文件下載和預(yù)覽

3.2 使用數(shù)據(jù)模型保存下載文件路徑

3.3 使用數(shù)據(jù)模型分享文件

3.4 清理緩存

相關(guān)文章

最新評論

大家感興趣的內(nèi)容

最近更新的內(nèi)容

常用在線小工具

2.3 控制是否顯示copy、 print、saveToCameraRoll