iOS匯入其他APP下載的檔案（用其他應用開啟）

Apolla發表於2021-07-10
iOSAPP

今天給自己的APP新增了一個小功能 可以開啟iOS其他APPTXT 檔案，一個很小的功能，做閱讀APP的小夥伴不要錯過。
附上APP地址： 一閱閱讀
有想看小說的小夥伴可以試下 支援換源 支援自定義書源
效果如下
image

1.編輯info.plst

<key>CFBundleDocumentTypes</key>
<array>
    <dict>
        <key>CFBundleTypeIconFiles</key>
        <array>
            <string>icon.png</string>
            <string>icon@2x.png</string>
        </array>
        <key>CFBundleTypeName</key>
        <string>com.myapp.common-data</string>
        <key>LSItemContentTypes</key>
        <array>
        //我只匯入txt 所以只加了text
            <string>public.text</string>
//以下區域是我查到的但是我沒有加
            <string>public.data</string>
        <string>com.microsoft.powerpoint.ppt</string>
            <string>public.item</string>
            <string>com.microsoft.word.doc</string>
            <string>com.adobe.pdf</string>
            <string>com.microsoft.excel.xls</string>
            <string>public.image</string>
            <string>public.content</string>
            <string>public.composite-content</string>
            <string>public.archive</string>
            <string>public.audio</string>
            <string>public.movie</string>
        </array>
    </dict>
</array>

2.在APPdelegate接收檔案地址

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
    if (self.window) {
        if (url) {
            NSString *fileName = url.lastPathComponent; // 從路徑中獲得完整的檔名（帶字尾）
            // path 類似這種格式：file:///private/var/mobile/Containers/Data/Application/83643509-E90E-40A6-92EA-47A44B40CBBF/Documents/Inbox/jfkdfj123a.pdf
            NSString *path = url.absoluteString; // 完整的url字串
            path = [self URLDecodedString:path]; // 解決url編碼問題

            NSMutableString *string = [[NSMutableString alloc] initWithString:path];

            if ([path hasPrefix:@"file://"]) { // 通過字首來判斷是檔案
                // 去除字首：/private/var/mobile/Containers/Data/Application/83643509-E90E-40A6-92EA-47A44B40CBBF/Documents/Inbox/jfkdfj123a.pdf
                [string replaceOccurrencesOfString:@"file://" withString:@"" options:NSCaseInsensitiveSearch range:NSMakeRange(0, path.length)];

                // 此時獲取到檔案儲存在本地的路徑，就可以在自己需要使用的頁面使用了
                NSDictionary *dict = @{@"fileName":fileName,
                                       @"filePath":string};
            [[NSNotificationCenter defaultCenter] postNotificationName:TJBookStackWillImportTXTNotification object:nil userInfo:dict];

                return YES;
            }
        }
    }
    return YES;
}

// 當檔名為中文時，解決url編碼問題
- (NSString *)URLDecodedString:(NSString *)str {
    NSString *decodedString=(__bridge_transfer NSString *)CFURLCreateStringByReplacingPercentEscapesUsingEncoding(NULL, (__bridge CFStringRef)str, CFSTR(""), CFStringConvertNSStringEncodingToEncoding(NSUTF8StringEncoding));
    
    return decodedString;
}

3.在主頁面對接收到的資料進行處理

不建議在APPdelegate進行處理 會拖慢進入APP速度

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(addLoacalBookWithFilePath:) name:TJBookStackWillImportTXTNotification object:nil];


-(void)addLoacalBookWithFilePath:(NSNotification *)notification{
    
    [SVProgressHUD showInfoWithStatus:@"正在後臺解析書籍"];
//啟動執行緒進行處理
    dispatch_queue_t conCurrentQueue = dispatch_queue_create("importBook", DISPATCH_QUEUE_CONCURRENT);
        dispatch_async(conCurrentQueue, ^{
            NSDictionary *dic = notification.userInfo;
            NSString *filePath = dic[@"filePath"];
            
            NSString *bookId = [NSString stringWithFormat:@"%@", @([[NSDate date] timeIntervalSince1970] * 1000)];
            
            [TJReadParser parseLocalBookWithFilePath:filePath bookId :bookId success:^(NSArray<TJChapterModel *> * _Nonnull chapters) {
                    // 建立書籍模型
                    TJBookModel *bookModel = [[TJBookModel alloc] init];
                    bookModel.bookType = TJBookTypeLocal;
                    bookModel.bookName = filePath.lastPathComponent;
                    // 本地書隨機生成ID
                    bookModel.bookId = bookId;
                    bookModel.chapterCount = chapters.count;
                    for (TJChapterModel *chapter in chapters) {
                        chapter.bookId = bookModel.bookId;
                    }
                    [TJReadHelper addToBookStackWithBook:bookModel complete:^{
                        [TJChapterDataManager insertChaptersWithModels:chapters];
                        [SVProgressHUD showSuccessWithStatus:@"書籍已經成功加入書架"];
                        [[NSNotificationCenter defaultCenter] postNotificationName:TJBookStackDidChangeNotification object:nil userInfo:nil];
                        
                    }];
                } failure:^(NSError *error) {
                    [SVProgressHUD showErrorWithStatus:error.userInfo[NSUnderlyingErrorKey]];
                }];
            
            
        });
       
   
   
}

4.更新頁面UI

記得迴歸執行緒

 dispatch_async(dispatch_get_main_queue(), ^{
        self.dataSource = [[TJReadRecordManager allBooksInStack] copy];
        [self.booksTableView reloadData];
    });

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