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.png
21          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);