1,判断某一路径是否包含后一文件夹

   [fileManager fileExistsAtPath:filePathName isDirectory:(&isDir)];

if (!isDir) {

UIImage *temp = [UIImage imageWithContentsOfFile:filePathName];

[imgArray addObject:temp];

 }

isDir = NO;

 

2.判断某一文件是否是png文件

   if ([filePathName hasSuffix:@"png"]) {

UIImage *temp = [UIImage imageWithContentsOfFile:filePathName];

[imgArray addObject:temp];

}

3.如何用nslog输出BOOL

   NSLog(@"isSave:%@",isSave ? @"YES":@"NO"); 

 

4.如何将文件保存到某一文件夹中

    BOOL isSave = [fileManager createFileAtPath:newPathCopy contents:imageData attributes:nil];

        该路径newPathCopy要指定到某一文件的后缀，