iOS檔案和檔案夾的建立,刪除,移動, 拷貝,是否存在及單一資料型別的讀寫

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- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    // Override point for customization after application launch.    // 沙箱(SandBox)    // Documents(檔案文檔, 使用者主動資料存放區)    // Libray(資源, 一般用來存放, 程式員要儲存的一些資料)    //     ??    //   Cache (快取檔案)    //   Perferences (使用者資訊和一些使用者佈建, NSUserDefaults)    // tmp(臨時目錄, 下載的臨時檔案一般放這裡)        [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"isLogin"];    [[NSUserDefaults standardUserDefaults] synchronize];        // 2. 擷取沙箱路徑    // 下面是兩個快捷擷取到目錄的 C 語言的函數    // 根目錄 家目錄    NSHomeDirectory();    NSLog(@"Home------%@", NSHomeDirectory());    // 臨時目錄 tmp 目錄    NSTemporaryDirectory();    NSLog(@"Temporary-----%@", NSTemporaryDirectory());        //  C 函數    //  參數1: 搜尋資料夾路徑 NSSearchPathDirectory    //  常用: NSDocumentDirectory NSLibraryDirectory NSCachesDirectory    //  參數2: 在使用者範圍下搜尋    //  參數3: YES or NO YES代表絕對路徑(基本上用絕對路徑), NO代表相對路徑(~)    NSArray *pathArray =  NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);    NSLog(@"%@", pathArray);    [pathArray firstObject];        // NSBundle  .app檔案包    NSLog(@"%@", [NSBundle mainBundle]);        // 1> 簡單的檔案讀寫 Input Output    NSString *hello = @"Hello, I/O";    // 一般拼接路徑時, 使用 stringByAppendingPathComponent 會自動加斜杠    NSString *writePath = [[pathArray firstObject] stringByAppendingPathComponent:@"hello.txt"];    NSError *error = nil;    [hello writeToFile:writePath atomically:YES encoding:NSUTF8StringEncoding error:&error];    if (error) {        NSLog(@"儲存失敗");    } else {        NSLog(@"儲存成功");    }        // 2> 讀取路徑對應的文字    NSError *readError = nil;    NSString *readString = [NSString stringWithContentsOfFile:writePath encoding:NSUTF8StringEncoding error:&readError];    NSLog(@"%@", readString);        // 3> 將 數組 寫入本地檔案    NSArray *array = @[@"黃航", @"韓旭", @"爆花", @"寶寶"];    NSString *arrayPath = [[pathArray firstObject] stringByAppendingPathComponent:@"name.plist"];    BOOL isArrayWriteSuccess = [array writeToFile:arrayPath atomically:YES];    if (isArrayWriteSuccess) {        NSLog(@"寫入成功");    } else {        NSLog(@"寫入失敗");    }        // 4> 將 數組 讀取    NSArray *nameArray = [NSArray arrayWithContentsOfFile:arrayPath];    NSLog(@"%@", nameArray);        // 5> 將 字典 寫入本地    NSDictionary *dict = @{@"name":@"mafeng",                           @"age":@"23",                           @"sex":@"man"};    NSString *dictPath = [[pathArray firstObject] stringByAppendingPathComponent:@"mafeng.plist"];    BOOL isDictWriteSuccess = [dict writeToFile:dictPath atomically:YES];    if (isDictWriteSuccess) {        NSLog(@"寫入成功");    } else {        NSLog(@"寫入失敗");    }        // 6> 將字典讀取出來    NSDictionary *dic = [NSDictionary dictionaryWithContentsOfFile:dictPath];    NSLog(@"%@", dic);        // 7> 將Data類型寫入本地    UIImage *image = [UIImage imageNamed:@"user"];        NSString *dataPath = [[pathArray firstObject] stringByAppendingPathComponent:@"imageData"];    NSData *imageData = UIImageJPEGRepresentation(image, 0.1);        BOOL isDataWriteSuccess = [imageData writeToFile:dataPath atomically:YES];    NSLog(@"%@", imageData);    if (isDataWriteSuccess) {        NSLog(@"寫入成功");    } else {        NSLog(@"寫入失敗");    }        NSData *imageNewData = [NSData dataWithContentsOfFile:dataPath];    UIImage *fileImage = [UIImage imageWithData:imageNewData];        // 2. 複雜物件檔案讀寫, 自訂類型    // 歸檔/反歸檔, 序列化/還原序列化        // 1> 歸檔, 將 對象 儲存到本地    Book *book = [Book new];    book.bookName = @"放棄iOS從我做起";    book.bookType = @"教育";    book.bookPrice = @"988.5";    book.bookAuthor = @"晃晃";    book.bookAddress = @"演變大學";        NSString *bookPath = [[pathArray firstObject] stringByAppendingPathComponent:@"book.plist"];    BOOL isSuccess = [NSKeyedArchiver archiveRootObject:book toFile:bookPath];    if (isSuccess) {        NSLog(@"寫入成功");    }        // 2> 反歸檔    Book *huangBook = [NSKeyedUnarchiver unarchiveObjectWithFile:bookPath];    NSLog(@"%@", huangBook.bookName);        // 如果對象想要實現歸檔和反歸檔    // 1. 對象對應的類需要簽訂  Coding    // 2. 實現寫一方法    //     1> initWithCoder  反歸檔用    //     2> encodeWithCoder 歸檔用    // 3. 歸檔時使用 KeyedArchiver    // 4. 反歸檔時, 使用 KeyedUnarchiver        // 建立一個檔案管理工具    NSFileManager *manager = [NSFileManager defaultManager];    NSString *filePath = [[pathArray firstObject] stringByAppendingPathComponent:@"10101"];    // 建立檔案夾    [manager createDirectoryAtPath:filePath withIntermediateDirectories:YES attributes:nil error:nil];    // 檔案是否存在    BOOL isExists = [manager fileExistsAtPath:filePath];    // 刪除檔案    BOOL isDele = [manager removeItemAtPath:bookPath error:nil];    if (isDele) {        NSLog(@"刪除成功");    } else {        NSLog(@"刪除失敗");    }    if (isExists) {        NSLog(@"檔案夾存在");        // 拷貝檔案        NSString *copyPath = [filePath stringByAppendingPathComponent:@"dict.plist"];;        BOOL isCopy = [manager copyItemAtPath:dictPath toPath:copyPath error:nil];        if (isCopy) {            NSLog(@"拷貝成功");        } else {            NSLog(@"拷貝失敗");        }        // 移動檔案        NSString *movePath = [filePath stringByAppendingPathComponent:@"mov.plist"];;        BOOL isMove = [manager moveItemAtPath:dictPath toPath:movePath error:nil];        if (isMove) {            NSLog(@"移動成功");        } else {            NSLog(@"移動失敗");        }            } else {        NSLog(@"檔案夾不存在");    }    return YES;} 

 

iOS檔案和檔案夾的建立,刪除,移動, 拷貝,是否存在及單一資料型別的讀寫