如何在 swift 2.0 中使用 AttributesOfFileSystemForpaths 获取总磁盘空间和可用磁盘空间 [英] How to get the Total Disk Space and Free Disk space using AttributesOfFileSystemForpaths in swift 2.0
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问题描述
这是我在 Objective-C 中使用的方式
This is the way I use in Objective-C
-(uint64_t)getFreeDiskspace {
float totalSpace = 0;
float totalFreeSpace = 0;
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 floatValue];
self.totalSpace = [NSString stringWithFormat:@"%.3f GB",totalSpace/(1024*1024*1024)];
totalFreeSpace = [freeFileSystemSizeInBytes unsignedLongLongValue];
self.freeSpace = [NSString stringWithFormat:@"%.3f GB",totalFreeSpace/(1024*1024*1024)];
} else {
LogError(@"Error Obtaining System Memory Info: Domain = %@, Code = %ld", [error domain], (long)[error code]);
}
return totalFreeSpace;
}
我尝试将其转换为 swift 和错误
I tried converting it to swift and errors in
if(dictionary)
和
attributesOfFileSystemForPaths
已显示.有人可以帮我将其转换为 swift 2.0 吗?它会对我的项目大有裨益.提前致谢.
were shown.Can anyone help me in converting this to swift 2.0 ? It would do a world of good to my project. Thank You in Advance.
推荐答案
对于 Swift 5.1.3:
For Swift 5.1.3:
struct FileManagerUility {
static func getFileSize(for key: FileAttributeKey) -> Int64? {
let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
guard
let lastPath = paths.last,
let attributeDictionary = try? FileManager.default.attributesOfFileSystem(forPath: lastPath) else { return nil }
if let size = attributeDictionary[key] as? NSNumber {
return size.int64Value
} else {
return nil
}
}
static func convert(_ bytes: Int64, to units: ByteCountFormatter.Units = .useGB) -> String? {
let formatter = ByteCountFormatter()
formatter.allowedUnits = units
formatter.countStyle = ByteCountFormatter.CountStyle.decimal
formatter.includesUnit = false
return formatter.string(fromByteCount: bytes)
}
}
像这样使用api:
if let totalSpaceInBytes = FileManagerUility.getFileSize(for: .systemSize) {
/// If you want to convert into GB then call like this
let totalSpaceInGB = FileManagerUility.convert(totalSpaceInBytes)
print("Total space [\(totalSpaceInBytes) bytes] = [\(totalSpaceInGB!) GB]")
}
if let freeSpaceInBytes = FileManagerUility.getFileSize(for: .systemFreeSize) {
/// If you want to convert into GB then call like this
let freeSpaceInGB = FileManagerUility.convert(freeSpaceInBytes)
print("Free space [\(freeSpaceInBytes) bytes] = [\(freeSpaceInGB!) GB]")
}
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