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