工作中经常会用到的一些便捷方法，收藏以备不时之需。
//获取当前时间戳有两种方法(以秒为单位)
//获取当前时间戳有两种方法(以秒为单位)
+(NSString*)getNowTimeTimestampWithNowDate:(NSDate*)nowDate{
NSDateFormatter *formatter = [[NSDateFormatter alloc] init] ;
[formattersetDateStyle:NSDateFormatterMediumStyle];
[formattersetTimeStyle:NSDateFormatterShortStyle];
[formattersetDateFormat:@"YYYY-MM-dd HH:mm:ss"];
NSTimeZone* timeZone = [NSTimeZone timeZoneWithName:@"Asia/BeiJing"];
[formattersetTimeZone:timeZone];
// NSDate *datenow = [NSDate date];//现在时间,你可以输出来看下是什么格式
NSString *timeSp = [NSString stringWithFormat:@"%ld", (long)[nowDate timeIntervalSince1970]];
// NSLog(@"-------------1111---timeSp:%@",timeSp); //时间戳的值时间戳转时间的方法
returntimeSp;
}
//获取当前的时间
//获取当前的时间
+(NSString*)getCurrentTimesWithNowDate:(NSDate*)nowDate
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formattersetDateFormat:@"YYYY-MM-dd HH:mm:ss"];
// NSDate *datenow = [NSDate date];
NSString*currentTimeString = [formatterstringFromDate:nowDate];
returncurrentTimeString;
}
//检查字符非空 nil null @“”
//检查字符非空 nil null @“”
+(BOOL)judgeBlankString:(NSString*)aStr {
if(!aStr) {
returnYES;
}
if ([aStr isKindOfClass:[NSNull class]]) {
returnYES;
}
if(!aStr.length) {
returnYES;
}
NSCharacterSet *set = [NSCharacterSet whitespaceAndNewlineCharacterSet];
NSString *trimmedStr = [aStr stringByTrimmingCharactersInSet:set];
if(!trimmedStr.length) {
returnYES;
}
return NO;
}
//判断手机号码格式是否正确
//判断手机号码格式是否正确
+ (BOOL)judgeMobile:(NSString*)mobile{
mobile = [mobilestringByReplacingOccurrencesOfString:@" " withString:@""];
if(mobile.length!=11)
{
returnNO;
}else{
/**
* 移动号段正则表达式
*/
NSString *CM_NUM = @"^((13[4-9])|(147)|(15[0-2,7-9])|(178)|(18[2-4,7-8]))\\d{8}|(1705)\\d{7}$";
/**
* 联通号段正则表达式
*/
NSString *CU_NUM = @"^((13[0-2])|(145)|(15[5-6])|(176)|(18[5,6]))\\d{8}|(1709)\\d{7}$";
/**
* 电信号段正则表达式
*/
NSString *CT_NUM = @"^((133)|(153)|(177)|(18[0,1,9]))\\d{8}$";
NSPredicate *pred1 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CM_NUM];
BOOLisMatch1 = [pred1evaluateWithObject:mobile];
NSPredicate *pred2 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CU_NUM];
BOOLisMatch2 = [pred2evaluateWithObject:mobile];
NSPredicate *pred3 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CT_NUM];
BOOLisMatch3 = [pred3evaluateWithObject:mobile];
if(isMatch1 || isMatch2 || isMatch3) {
returnYES;
}else{
returnNO;
}
}
}
/*限制输入数字*/
/*限制输入数字*/
+ (BOOL)validateNumber:(NSString*)number {
BOOLres =YES;
NSCharacterSet* tmpSet = [NSCharacterSet characterSetWithCharactersInString:@"0123456789"];
inti =0;
while(i < number.length) {
NSString * string = [number substringWithRange:NSMakeRange(i, 1)];
NSRangerange = [stringrangeOfCharacterFromSet:tmpSet];
if(range.length==0) {
res =NO;
break;
}
i++;
}
returnres;
}
//正则判断全是数字
//正则判断全是数字
+(BOOL)judgeNumInputShouldNumber:(NSString*)str{
if(str.length==0) {
returnNO;
}
NSString*regex =@"[0-9]*";
NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
if([predevaluateWithObject:str]) {
returnYES;
}
return NO;
}
/*过滤所有空格*/
/*过滤所有空格*/
+ (NSString*)stringContainCharactersInSet:(NSString*)str{
NSString *topstr = [str stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
NSString *endStr = [topstr stringByReplacingOccurrencesOfString:@" " withString:@""];
returnendStr;
}
/*过滤emoji*/
/*过滤emoji*/
+(BOOL)stringContainsEmoji:(NSString*)string
{
// 过滤所有表情。returnValue为NO表示不含有表情，YES表示含有表情
__blockBOOLreturnValue =NO;
[stringenumerateSubstringsInRange:NSMakeRange(0, [string length]) options:NSStringEnumerationByComposedCharacterSequences usingBlock:^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {
constunicharhs = [substringcharacterAtIndex:0];
// surrogate pair
if(0xd800<= hs && hs <=0xdbff) {
if(substring.length>1) {
constunicharls = [substringcharacterAtIndex:1];
constintuc = ((hs -0xd800) *0x400) + (ls -0xdc00) +0x10000;
if(0x1d000<= uc && uc <=0x1f77f) {
returnValue =YES;
}
}
}elseif(substring.length>1) {
constunicharls = [substringcharacterAtIndex:1];
if(ls ==0x20e3) {
returnValue =YES;
}
}else{
// non surrogate
if(0x2100<= hs && hs <=0x27ff) {
returnValue =YES;
}elseif(0x2B05<= hs && hs <=0x2b07) {
returnValue =YES;
}elseif(0x2934<= hs && hs <=0x2935) {
returnValue =YES;
}elseif(0x3297<= hs && hs <=0x3299) {
returnValue =YES;
}elseif(hs ==0xa9|| hs ==0xae|| hs ==0x303d|| hs ==0x3030|| hs ==0x2b55|| hs ==0x2b1c|| hs ==0x2b1b|| hs ==0x2b50) {
returnValue =YES;
}
}
}];
returnreturnValue;
}
//过滤特殊字符
//过滤特殊字符
+ (NSString*)encodeToPercentEscapeString:(NSString*)input
{
NSString*outputStr = (NSString*)
CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,
(CFStringRef)input,
NULL,
(CFStringRef)@"!*'();:@&=+$,/?%#[]",
kCFStringEncodingUTF8));
returnoutputStr;
}