Documents目录下得增删改查

//在documents目录下创建一个名字为myFile的文件夹

1. NSString *path = [[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] stringByAppendingPathComponent:@"myFile"];

2. NSLog(@"%@",path);

//返回文件管理的一个单例

3. NSFileManager *fileManager = [NSFileManager defaultManager];

4. BOOL isDir = FALSE;

5. BOOL isDirExist = [fileManager fileExistsAtPath:path isDirectory:&isDir];

6. if(!(isDirExist && isDir))

{ BOOL bCreateDir = [fileManager createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil];

if(!bCreateDir){

　　　　NSLog(@"创建文件夹失败！");

}

NSLog(@"创建文件夹成功，文件路径%@",path); }

7. UIImage *image=[UIImage imageWithContentsOfFile:@"myImage.png"];

NSData *data = UIImagePNGRepresentation(image);

8. //将myImage.png保存到myFile文件夹下，新名称为image.png

9. BOOL isSaved= [fileManager createFileAtPath:[path stringByAppendingString:@"/image.png"] contents:data attributes:nil];

10. NSLog(@"图片保存状态：%d",isSaved);

11. //获取保存的图片

UIImage *newimage=[UIImage imageWithContentsOfFile:[path stringByAppendingString:@"/image.png"]];

12 // 删除文件

BOOL isDelete=[fileManager removeItemAtPath:path error:nil];

NSLog(@"%d",isDelete);

转载于:https://www.cnblogs.com/sunshinesl/p/4759816.html

来源：https://blog.csdn.net/weixin_30449453/article/details/99122132

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