我能够成功下载音频文件..我能够获得设备的可用空间......但我的要求是在下载文件之前我想检查iPhone上是否有足够的空间如果是,则下载,如果没有那么用户可以看到一些警告信息,例如“您的设备没有足够的内存空间。”
PLZ引导我任何身体..提前致谢。
- (uint64_t)freeDiskspace
{
uint64_t totalSpace = 0;
uint64_t totalFreeSpace = 0;
__autoreleasing NSError *error = nil;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSDictionary *dictionary = [[NSFileManager defaultManager] attributesOfFileSystemForPath:[paths lastObject] error: &error];
if (dictionary) {
NSNumber *fileSystemSizeInBytes = [dictionary objectForKey: NSFileSystemSize];
NSNumber *freeFileSystemSizeInBytes = [dictionary objectForKey:NSFileSystemFreeSize];
totalSpace = [fileSystemSizeInBytes unsignedLongLongValue];
totalFreeSpace = [freeFileSystemSizeInBytes unsignedLongLongValue];
NSLog(@"Memory Capacity of %llu MiB with %llu MiB Free memory available.", ((totalSpace/1024ll)/1024ll), ((totalFreeSpace/1024ll)/1024ll));
}
else {
NSLog(@"Error Obtaining System Memory Info: Domain = %@, Code = %ld", [error domain], (long)[error code]);
}
return totalFreeSpace;
}
答案 0 :(得分:0)
如果您有12.9MB的可用空间,则不会下载12.8MB的音频文件。那是在惹麻烦。检查100MB的可用空间。然后检查iPhone是否行为不当或给用户带来100MB可用空间的麻烦,如果有,则增加数量。