IOS在Document目录下创建文件夹、保存、读取、以及删除文件

 1     //  在Documents目录下创建一个名为LaunchImage的文件夹 2     NSString *path = [[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] stringByAppendingPathComponent:@"LaunchImage"]; 3     NSLog(@"%@",path); 4      5     NSFileManager *fileManager = [NSFileManager defaultManager]; 6     BOOL isDir = FALSE; 7     BOOL isDirExist = [fileManager fileExistsAtPath:path isDirectory:&isDir]; 8     if(!(isDirExist && isDir)) 9         10     {11         BOOL bCreateDir = [fileManager createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil];12         if(!bCreateDir){13             NSLog(@"创建文件夹失败！");14         }15         NSLog(@"创建文件夹成功，文件路径%@",path);16     }17     18     UIImage *image=[UIImage imageWithContentsOfFile:@"testimage.png"];19     NSData *data = UIImagePNGRePResentation(image);20     //将testimage.png保存到LaunchImage文件夹下，新名称为image1.png21          BOOL isSaved=   [fileManager createFileAtPath:[path stringByAppendingString:@"/image1.png"] contents:data attributes:nil];22     NSLog(@"图片保存状态：%d",isSaved);23     24     //获取保存的图片25     UIImage *newimage=[UIImage imageWithContentsOfFile:[path stringByAppendingString:@"/image1.png"]];26    27 //   删除文件28      BOOL isDelete=[fileManager removeItemAtPath:path error:nil];29     NSLog(@"%d",isDelete);