ios判断程序文件夹下是否存在指定文件

    NSString *fileName=@"04.jpg";
    NSArray *DocumentPath= NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *filepath=[[NSString alloc] initWithString:[NSString stringWithFormat:@"%@/%@",DocumentPath[0],fileName]];
    NSFileManager *fileManager = [NSFileManager defaultManager];
    if ([fileManager fileExistsAtPath:filepath]) {
        NSLog(@"file is exists");
    } else{
        NSLog(@"file is not exists");
    };