~~~ 1、獲取程序的Home目錄 NSString *homeDirectory = NSHomeDirectory(); NSLog(@"path:%@", homeDirectory); 2、獲取document目錄 NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *path = [paths objectAtIndex:0]; NSLog(@"path:%@", path); 3、獲取Cache目錄 NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES); NSString *path = [paths objectAtIndex:0]; NSLog(@"%@", path); 4、獲取Library目錄 NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES); NSString *path = [paths objectAtIndex:0]; NSLog(@"%@", path); 5、獲取Tmp目錄 NSString *tmpDir = NSTemporaryDirectory(); NSLog(@"%@", tmpDir); 6、寫入文件 NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *docDir = [paths objectAtIndex:0]; if (!docDir) { NSLog(@"Documents 目錄未找到"); } NSArray *array = [[NSArray alloc] initWithObjects:@"內容",@"content",nil]; NSString *filePath = [docDir stringByAppendingPathComponent:@"testFile.txt"]; [array writeToFile:filePath atomically:YES]; 7, 寫入文件 NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *docDir = [paths objectAtIndex:0]; NSString *filePath = [docDir stringByAppendingPathComponent:@"testFile.txt"]; NSArray *array = [[NSArray alloc]initWithContentsOfFile:filePath]; NSLog(@"%@", array); ~~~