NSFileManager,文件扩展名

查看NSString的文档,您会发现 stringByDeletingPathExtension .

这就是它的实现方式:

NSArray *stuff = [NSArray arrayWithObjects:@"image1.jpg", @"image2.png", @"image3.tiff", nil];
NSLog(@"input %@", stuff);

stuff = [stuff valueForKey:@"stringByDeletingPathExtension"];
NSLog(@"output %@", stuff);

我不希望您理解该代码,因此这里有一个更简单的版本:

NSArray *stuff = [NSArray arrayWithObjects:@"image1.jpg", @"image2.png", @"image3.tiff", nil];
NSLog(@"input %@", stuff);

NSMutableArray *output = [NSMutableArray array];
for (NSString *filename in stuff) {
    NSString *filenameWithoutExtension = [filename stringByDeletingPathExtension];
    [output addObject:filenameWithoutExtension];
}
NSLog(@"output %@", output);