获取当前时间
+(NSDateComponents *)GetCurrentDate{
NSCalendar *gregorian = [[NSCalendar alloc]
initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
// 获取当前日期
NSDate* dt = [NSDate date];
// 定义一个时间字段的旗标，指定将会获取指定年、月、日、时、分、秒的信息
unsigned unitFlags = NSCalendarUnitYear |
NSCalendarUnitMonth | NSCalendarUnitDay |
NSCalendarUnitHour | NSCalendarUnitMinute |
NSCalendarUnitSecond | NSCalendarUnitWeekday;
// 获取不同时间字段的信息
NSDateComponents* comp = [gregorian components: unitFlags fromDate:dt];
// 获取各时间字段的数值
/*
NSLog(@"现在是%ld年" , comp.year);
NSLog(@"现在是%ld月 " , comp.month);
NSLog(@"现在是%ld日" , comp.day);
NSLog(@"现在是%ld时" , comp.hour);
NSLog(@"现在是%ld分" , comp.minute);
NSLog(@"现在是%ld秒" , comp.second);
NSLog(@"现在是星期%ld" , comp.weekday);
*/
return comp;
}
判断电话号码
+(BOOL)checkPhoneNumber:(NSString *)phone
{
/**
* 移动：134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188
* 联通：130,131,132,152,155,156,185,186
* 电信：133,1349,153,180,189,181(增加)
*/
NSString * MOBIL = @"^1(3[0-9]|5[0-35-9]|8[025-9])\\d{8}$";
NSString * CM = @"^1(34[0-8]|(3[5-9]|5[017-9]|8[2378])\\d)\\d{7}$";
NSString * CU = @"^1(3[0-2]|5[256]|8[56]|7[6])\\d{8}$";
NSString * CT = @"^1((33|53|8[019])[0-9]|349)\\d{7}$";
NSPredicate *regextestmobile = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", MOBIL];
NSPredicate *regextestcm = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CM];
NSPredicate *regextestcu = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CU];
NSPredicate *regextestct = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CT];
if (([regextestmobile evaluateWithObject:phone]
|| [regextestcm evaluateWithObject:phone]
|| [regextestct evaluateWithObject:phone]
|| [regextestcu evaluateWithObject:phone])) {
NSLog(@"手机号验证可用");
return YES;
}else{
return NO;
}
return NO;
}
判断邮箱
+(BOOL)checkEmail:(NSString *)email{
NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
if( [emailTest evaluateWithObject:email]){
NSLog(@"恭喜！您输入的邮箱验证合法");
return YES;
}else{
return NO;
}
return NO;
}
去除字符串中前后空格
+(NSString *)removeSpaceAndNewline:(NSString *)str{
NSString *temp = [str stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
NSString *text = [temp stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet ]];
return text;
}
改变label行间距
+ (void)changeLineSpaceForLabel:(UILabel *)label WithSpace:(float)space {
NSString *labelText = label.text;
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:labelText];
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
[paragraphStyle setLineSpacing:space];
[attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [labelText length])];
label.attributedText = attributedString;
[label sizeToFit];
}
检测手机是否安装 QQ 微信 微博
if ([QQApiInterface isQQInstalled]) {
NSLog(@"安装了QQ");
return YES;
}else{
NSLog(@"mei安装QQ");
return NO;
}
if ([WXApi isWXAppInstalled]) {
NSLog(@"安装了wechat");
return YES;
}else{
NSLog(@"mei安装wechat");
return NO;
}
if ([WeiboSDK isWeiboAppInstalled]) {
NSLog(@"安装了微博");
return YES;
}else{
NSLog(@"mei安装微博");
return NO;
}
生成uuid
+ (NSString *)uuidString
{
CFUUIDRef uuid_ref = CFUUIDCreate(NULL);
CFStringRef uuid_string_ref= CFUUIDCreateString(NULL, uuid_ref);
NSString *uuid = [NSString stringWithString:(__bridge NSString *)uuid_string_ref];
CFRelease(uuid_ref);
CFRelease(uuid_string_ref);
return [uuid lowercaseString];
}
字典转json串
+ (NSString*)dictionaryToJson:(NSDictionary *)dic
{
NSError *parseError = nil;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:&parseError];
return [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
}
压缩图片
+(UIImage *)scaleToSize:(UIImage *)img size:(CGSize)size{
// 创建一个bitmap的context
// 并把它设置成为当前正在使用的context
UIGraphicsBeginImageContext(size);
// 绘制改变大小的图片
[img drawInRect:CGRectMake(0, 0, size.width, size.height)];
// 从当前context中创建一个改变大小后的图片
UIImage* scaledImage = UIGraphicsGetImageFromCurrentImageContext();
// 使当前的context出堆栈
UIGraphicsEndImageContext();
// 返回新的改变大小后的图片
return scaledImage;
}
获取当前网络
+(NSString *)getNetWorkStates{
UIApplication *app = [UIApplication sharedApplication];
NSArray *children = [[[app valueForKeyPath:@"statusBar"]valueForKeyPath:@"foregroundView"]subviews];
NSString *state = [[NSString alloc]init];
int netType = 0;
//获取到网络返回码
for (id child in children) {
if ([child isKindOfClass:NSClassFromString(@"UIStatusBarDataNetworkItemView")]) {
//获取到状态栏
netType = [[child valueForKeyPath:@"dataNetworkType"]intValue];
switch (netType) {
case 0:
state = @"无网络";
//无网模式
break;
case 1:
state = @"2G";
break;
case 2:
state = @"3G";
break;
case 3:
state = @"4G";
break;
case 5:
{
state = @"Wifi";
}
break;
default:
break;
}
}
}
//根据状态选择
return state;
}
给字符串每三位加逗号(金钱)
+(NSString *)hanleNums:(NSString *)numbers{
NSString *str = [numbers substringWithRange:NSMakeRange(numbers.length%3, numbers.length-numbers.length%3)];
NSString *strs = [numbers substringWithRange:NSMakeRange(0, numbers.length%3)];
for (int i =0; i < str.length; i =i+3) {
NSString *sss = [str substringWithRange:NSMakeRange(i, 3)];
strs = [strs stringByAppendingString:[NSString stringWithFormat:@",%@",sss]];
}
if ([[strs substringWithRange:NSMakeRange(0, 1)] isEqualToString:@","]) {
strs = [strs substringWithRange:NSMakeRange(1, strs.length-1)];
}
return strs;
}
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