ios获取手机内存代码 留存

 

    NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask , YES)objectAtIndex:0];

    NSFileManager *fileManager = [NSFileManagerdefaultManager];

    NSDictionary *fileSysAttributes = [fileManagerattributesOfFileSystemForPath:path error:nil];

    NSNumber *freeSpace = [fileSysAttributesobjectForKey:NSFileSystemFreeSize];

    NSNumber *totalSpace = [fileSysAttributesobjectForKey:NSFileSystemSize];

    

    NSString *total = [NSStringstringWithFormat:@"总空间为:%0.1fG",([totalSpacedoubleValue])/1024.0/1024.0/1024.0];

    NSString *free = [NSStringstringWithFormat:@"剩余:%0.1fG",([freeSpacedoubleValue])/1024.0/1024.0/1024.0];

    NSString *use = [NSStringstringWithFormat:@"已用:%0.1fG",([totalSpacedoubleValue]-[freeSpace doubleValue])/1024.0/1024.0/1024.0];

    NSLog(@"total : %@, free : %@, use : %@",total,free,use);