IO文件中,一些對目錄進行操作的函數:獲取、切分、組合

一些對目錄進行操作的函數： 獲取用戶的姓名：（NSString*)NSUserName() ; ? ?———>NSString *Str = NSUserName() 獲取home目錄路徑：(NSString*)NSHomeDirectory() 獲取臨時文件夾路徑：(NSString*)NSTemporaryDirectory() 一些對目錄進行操作的方法： 將路徑切成部分：- (NSArray *)pathComponents ?———>NSArray *paths = [path pathComponents] 將部分組合成路徑：+ (NSString?*)pathWithComponents:(NSArray?*)components 判斷是不是絕對路徑：- (BOOL)isAbsolutePath 獲取路徑最后一部分：- (NSString?*)lastPathComponent 刪除最后一部分：- (NSString?*)stringByDeletingLastPathComponent 獲取擴展名：- (NSString?*)pathExtension 刪除擴展名：- (NSString?*)stringByDeletingPathExtension 添加路徑：- (NSString?*)stringByAppendingPathComponent:(NSString?*)str 添加擴展名：- (NSString?*)stringByAppendingPathExtension:(NSString?*)str

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//1、獲取home目錄的路徑

1 NSString *homeDir = NSHomeDirectory(); 2 NSLog(@"home:%@",homeDir); 2015-08-24 21:17:28.727 05-path[992:45425] home:/Users/mac

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//2、獲取臨時文件夾的路徑

1 NSString *tempDir = NSTemporaryDirectory(); 2 NSLog(@"home:%@",tempDir); 2015-08-24 21:17:28.728 05-path[992:45425] home:/var/folders/dx/481d4y4j4430hfty5zr_1gfh0000gn/T/

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?//3、將路徑分成部分

1 NSArray *paths = [tempDir pathComponents]; 2 NSLog(@"%@",paths); 2015-08-24 21:17:28.728 05-path[992:45425] ("/",var,folders,dx,"481d4y4j4430hfty5zr_1gfh0000gn",T,"/" )

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//4、將部分再拼成路徑

1 NSString *path = [NSString pathWithComponents:paths]; 2 NSLog(@"%@",path); 2015-08-24 21:17:28.729 05-path[992:45425] /var/folders/dx/481d4y4j4430hfty5zr_1gfh0000gn/T

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//5、在路徑上添加文件

1 NSString *fileNamePath = [path stringByAppendingPathComponent:@"1.txt"]; 2 NSLog(@"fileName:%@",fileNamePath); 2015-08-24 21:17:28.729 05-path[992:45425] fileName:/var/folders/dx/481d4y4j4430hfty5zr_1gfh0000gn/T/1.txt

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//6、獲取路徑的最后一部分

1 NSString *fileName = [fileNamePath lastPathComponent]; 2 NSLog(@"fileName:%@",fileName); 2015-08-24 21:17:28.729 05-path[992:45425] fileName:1.txt

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//7、獲取文件的擴展名

1 NSString *extension = [fileNamePath pathExtension]; 2 NSLog(@"extension:%@",extension); 2015-08-24 21:17:28.729 05-path[992:45425] extension:txt Program ended with exit code: 0

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