@interface CommonUtils : NSObject
+ (NSString *)convertArrayToString:(NSArray *)array;
+ (NSArray *)convertStringToArray:(NSString *)string;
+ (BOOL)validateEmail:(NSString *)candidate;
+ (BOOL)validateCellPhone:(NSString *)candidate;
+ (long)getDocumentSize:(NSString *)folderName;
+ (NSArray *)getLetters;
+ (NSArray *)getUpperLetters;
+ (NSString *)getIPAddress;
+ (NSString *)getFreeMemory;
+ (NSString *)getDiskUsed;
+ (NSString *)getStringValue:(id)value;
+ (BOOL)createDirectorysAtPath:(NSString *)path;
+ (NSString*)getDirectoryPathByFilePath:(NSString *)filepath;
@end
#import "CommonUtils.h"
#import <CommonCrypto/CommonDigest.h>
@implementation CommonUtils
//把数组转换为字符串。
+ (NSString *)convertArrayToString:(NSArray *)array{
NSMutableString *string = [NSMutableString stringWithCapacity:0];
for( NSInteger i=0;i<[array count];i++ ){
[string appendFormat:@"%@%@",(NSString *)array[i], (i<([array count]-1))?@",":@""];
}
return string;
}
//吧字符串转换为数组。
+ (NSArray *)convertStringToArray:(NSString *)string{
return [string componentsSeparatedByString:@","];
}
//匹配是否为email地址。
+ (BOOL)validateEmail:(NSString *)candidate{
NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
return [emailTest evaluateWithObject:candidate];
}
+ (BOOL)validateCellPhone:(NSString *)candidate{
NSString *phoneRegex = @"((\\d{11})|^((\\d{7,8})|(\\d{4}|\\d{3})-(\\d{7,8})|(\\d{4}|\\d{3})-(\\d{7,8})-(\\d{4}|\\d{3}|\\d{2}|\\d{1})|(\\d{7,8})-(\\d{4}|\\d{3}|\\d{2}|\\d{1}))$)";
NSPredicate *phoneTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", phoneRegex];
return [phoneTest evaluateWithObject:candidate];
}
//获取文件的大小。
+ (long)getDocumentSize:(NSString *)folderName
{
NSFileManager *fileManager = [NSFileManager defaultManager];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = paths[0];
documentsDirectory = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat: @"/%@/", folderName]];
// NSDictionary *fileAttributes = [fileManager attributesOfFileSystemForPath:documentsDirectory error:nil];
NSDictionary *fileAttributes = [fileManager attributesOfItemAtPath:documentsDirectory error:nil];
long size = 0;
if(fileAttributes != nil)
{
NSNumber *fileSize = fileAttributes[NSFileSize];
size = [fileSize longValue];
}
return size;
}
//得到小写字母。
+ (NSArray *)getLetters
{
return @[@"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",@"i",@"j",@"k",@"l",@"m",@"n",@"o",@"p",@"q",@"r",@"s",@"t",@"u",@"v",@"w",@"x",@"y",@"z"];
}
//得到大写字母
+ (NSArray *)getUpperLetters
{
return @[@"A",@"B",@"C",@"D",@"E",@"F",@"G",@"H",@"I",@"J",@"K",@"L",@"M",@"N",@"O",@"P",@"Q",@"R",@"S",@"T",@"U",@"V",@"W",@"X",@"Y",@"Z"];
}
//得到ip地址。
+ (NSString *)getIPAddress
{
NSString *address = @"Unknown";
struct ifaddrs *interfaces = NULL;
struct ifaddrs *temp_addr = NULL;
int success = 0;
// retrieve the current interfaces - returns 0 on success
success = getifaddrs(&interfaces);
if (success == 0)
{
// Loop through linked list of interfaces
temp_addr = interfaces;
while(temp_addr != NULL)
{
if(temp_addr->ifa_addr->sa_family == AF_INET)
{
// Check if interface is en0 which is the wifi connection on the iPhone
// address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];
// NSLog(@"address: %@", [NSString stringWithUTF8String:temp_addr->ifa_name]);
if([@(temp_addr->ifa_name) isEqualToString:@"en0"])
{
// Get NSString from C String
address = @(inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr));
}
}
temp_addr = temp_addr->ifa_next;
}
}
// Free memory
freeifaddrs(interfaces);
return address;
// char iphone_ip[255];
// strcpy(iphone_ip,"127.0.0.1"); // if everything fails
// NSHost* myhost =[NSHost currentHost];
// if (myhost)
// {
// NSString *ad = [myhost address];
// if (ad)
// strcpy(iphone_ip,[ad cStringUsingEncoding: NSISOLatin1StringEncoding]);
// }
// return [NSString stringWithFormat:@"%s",iphone_ip];
}
//得到空闲的内存。
+ (NSString *)getFreeMemory{
mach_port_t host_port;
mach_msg_type_number_t host_size;
vm_size_t pagesize;
host_port = mach_host_self();
host_size = sizeof(vm_statistics_data_t) / sizeof(integer_t);
host_page_size(host_port, &pagesize);
vm_statistics_data_t vm_stat;
if (host_statistics(host_port, HOST_VM_INFO, (host_info_t)&vm_stat, &host_size) != KERN_SUCCESS)
NSLog(@"Failed to fetch vm statistics");
/* Stats in bytes */
natural_t mem_used = (vm_stat.active_count +
vm_stat.inactive_count +
vm_stat.wire_count) * pagesize;
natural_t mem_free = vm_stat.free_count * pagesize;
// natural_t mem_total = mem_used + mem_free;
return [NSString stringWithFormat:@"%0.1f MB used/%0.1f MB free", mem_used/1048576.f, mem_free/1048576.f];
// NSLog(@"used: %u free: %u total: %u", mem_used, mem_free, mem_total);
}
//获取硬盘空闲的空间。
+ (NSString *)getDiskUsed
{
NSDictionary *fsAttr = [[NSFileManager defaultManager] attributesOfFileSystemForPath:NSHomeDirectory() error:nil];
float diskSize = [fsAttr[NSFileSystemSize] doubleValue] / 1073741824.f;
float diskFreeSize = [fsAttr[NSFileSystemFreeSize] doubleValue] / 1073741824.f;
float diskUsedSize = diskSize - diskFreeSize;
return [NSString stringWithFormat:@"%0.1f GB of %0.1f GB", diskUsedSize, diskSize];
}
+ (NSString *)getStringValue:(id)value
{
if ([value isKindOfClass:[NSNull class]]) {
return nil;
}
if ([value isKindOfClass:[NSString class]]) {
if ([@"" isEqualToString:value]) {
return nil;
}
return value;
}
else
{
return [value stringValue];
}
}
//创建某个路径是否成功。
+ (BOOL)createDirectorysAtPath:(NSString *)path{
@synchronized(self){
NSFileManager* manager = [NSFileManager defaultManager];
if (![manager fileExistsAtPath:path]) {
NSError *error = nil;
if (![manager createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:&error]) {
return NO;
}
}
}
return YES;
}
//获取文件路径。
+ (NSString*)getDirectoryPathByFilePath:(NSString *)filepath{
if(!filepath || [filepath length] == 0){
return @"";
}
int pathLength = [filepath length];
int fileLength = [[filepath lastPathComponent] length];
return [filepath substringToIndex:(pathLength - fileLength - 1)];
}
@end
ios 常用的公用方法。
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转载自zhangmingwei.iteye.com/blog/1821100
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