//计算字符串中单词的个数
1 + (int)countWords:(NSString*)s
2 {
3 int i,n=[s length],l=0,a=0,b=0;
4 unichar c;
5 for(i=0;i<n;i++){
6 c=[s characterAtIndex:i];
7 if(isblank(c))
8 {
9 b++;
10 }else if(isascii(c))
11 {
12 a++;
13 }else
14 {
15 l++;
16 }
17 }
18 if(a==0 && l==0)
19 {
20 return 0;
21 }
22 return l+(int)ceilf((float)(a+b)/2.0);
23 }
//获取系统语言
+ (NSString *)getLocalLanguage
{
NSString *language = [[[NSUserDefaults standardUserDefaults] objectForKey:@"AppleLanguages"] objectAtIndex:0];
return language;
}
//获取本月，本周，本季度第一天的时间戳
+ (unsigned long long)getFirstDayOfWeek:(unsigned long long)timestamp
{
NSDate *now = [NSDate dateWithTimeIntervalSince1970:timestamp];
NSCalendar *cal = [NSCalendar currentCalendar];
NSDateComponents *comps = [cal
components:NSYearCalendarUnit| NSMonthCalendarUnit| NSWeekCalendarUnit | NSWeekdayCalendarUnit |NSWeekdayOrdinalCalendarUnit
fromDate:now];
if (comps.weekday <2)
{
comps.week = comps.week-1;
}
comps.weekday = 2;
NSDate *firstDay = [cal dateFromComponents:comps];
return [firstDay timeIntervalSince1970];
}
+ (unsigned long long)getFirstDayOfQuarter:(unsigned long long)timestamp
{
NSDate *now = [NSDate dateWithTimeIntervalSince1970:timestamp];
NSCalendar *cal = [NSCalendar currentCalendar];
NSDateComponents *comps = [cal
components:NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit
fromDate:now];
if (comps.month <=3)
{
comps.month = 1;
}
else if(comps.month<=6)
{
comps.month = 4;
}
else if(comps.month<=9)
{
comps.month = 7;
}
else if(comps.month<=12)
{
comps.month = 10;
}
comps.day = 1;
NSDate *firstDay = [cal dateFromComponents:comps];
return [firstDay timeIntervalSince1970]*1000;
}
+ (unsigned long long)getFirstDayOfMonth:(unsigned long long)timestamp
{
NSDate *now = [NSDate dateWithTimeIntervalSince1970:timestamp/1000];
NSCalendar *cal = [NSCalendar currentCalendar];
NSDateComponents *comps = [cal
components:NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit
fromDate:now];
comps.day = 1;
NSDate *firstDay = [cal dateFromComponents:comps];
return [firstDay timeIntervalSince1970]*1000;
}
//监测网络状态
1 - (void)reachabilityChanged:(NSNotification *)note {
2 Reachability* curReach = [note object];
3 NSParameterAssert([curReach isKindOfClass: [Reachability class]]);
4 NetworkStatus status = [curReach currentReachabilityStatus];
5
6 if (status == NotReachable)
7 {
8
9 }
10 else if(status == kReachableViaWiFi)
11 {
12
13 }
14 else if(status == kReachableViaWWAN)
15 {
16
17 }
18
19 }
20
21 - (void)setNetworkNotification
22 {
23 [[NSNotificationCenter defaultCenter] addObserver:self
24 selector:@selector(reachabilityChanged:)
25 name: kReachabilityChangedNotification
26 object: nil];
27 _hostReach = [[Reachability reachabilityWithHostName:@"http://www.baidu.com"] retain];
28 [_hostReach startNotifier];
29 }
//16进制颜色转UIColor
1 + (UIColor *)colorWithHex:(NSString *)hex {
2 // Remove `#` and `0x`
3 if ([hex hasPrefix:@"#"]) {
4 hex = [hex substringFromIndex:1];
5 } else if ([hex hasPrefix:@"0x"]) {
6 hex = [hex substringFromIndex:2];
7 }
8
9 // Invalid if not 3, 6, or 8 characters
10 NSUInteger length = [hex length];
11 if (length != 3 && length != 6 && length != 8) {
12 return nil;
13 }
14
15 // Make the string 8 characters long for easier parsing
16 if (length == 3) {
17 NSString *r = [hex substringWithRange:NSMakeRange(0, 1)];
18 NSString *g = [hex substringWithRange:NSMakeRange(1, 1)];
19 NSString *b = [hex substringWithRange:NSMakeRange(2, 1)];
20 hex = [NSString stringWithFormat:@"%@%@%@%@%@%@ff",
21 r, r, g, g, b, b];
22 } else if (length == 6) {
23 hex = [hex stringByAppendingString:@"ff"];
24 }
25
26 CGFloat red = [[hex substringWithRange:NSMakeRange(0, 2)] _hexValue] / 255.0f;
27 CGFloat green = [[hex substringWithRange:NSMakeRange(2, 2)] _hexValue] / 255.0f;
28 CGFloat blue = [[hex substringWithRange:NSMakeRange(4, 2)] _hexValue] / 255.0f;
29 CGFloat alpha = [[hex substringWithRange:NSMakeRange(6, 2)] _hexValue] / 255.0f;
30
31 return [UIColor colorWithRed:red green:green blue:blue alpha:alpha];
32 }
