IOS 常用工具代码汇总（持续更新中）

来源：互联网发布：semaphore c语言编辑：程序博客网时间：2024/06/06 01:17

1、显示AlertView

+ (void)showAlertViewWithTitle:(NSString *)title message:(NSString *)message{

UIAlertView *alert = [[UIAlertViewalloc]initWithTitle:titlemessage:messagedelegate:selfcancelButtonTitle:@"确定"otherButtonTitles:nil,nil];

[alert show];

}

2、获取text的size

+ (CGSize)sizeOfText:(NSString *)text withFont:(UIFont *)font withWidth:(float) width{

CGSize size = [textsizeWithFont:fontconstrainedToSize:CGSizeMake(width,CGFLOAT_MAX)lineBreakMode:NSLineBreakByWordWrapping];

return size;

}

3、得到当前的具体时间

+(NSString *)getTodayFormatter{

NSDate *dateToday = [NSDatedate];

NSDateFormatter *formatter = [[NSDateFormatteralloc]init];

[formatter setDateStyle:NSDateFormatterMediumStyle];

[formatter setTimeStyle:NSDateFormatterShortStyle];

[formatter setDateFormat:@"YYYY/MM/dd HH:mm:ss"];

[formatter setDateFormat:(@"yyyy-MM-dd")];

NSTimeZone* timeZone = [NSTimeZonesystemTimeZone];

[formatter setTimeZone:timeZone];

NSMutableString *dateStr = [NSMutableStringstringWithString: [formatterstringFromDate:dateToday]];

return [NSStringstringWithFormat:@"%@",dateStr];

}

4、Unix时间转标准时间，即从14XXXXXX转到2015年X月X日

+(NSString *)unixTimeToNSStringTime:(NSString *)unixTime{

double unixTimeStamp = [unixTimedoubleValue];

NSTimeInterval _interval=unixTimeStamp;

NSDate *date = [NSDatedateWithTimeIntervalSince1970:_interval];

NSDateFormatter *_formatter=[[NSDateFormatteralloc]init];

[_formatter setLocale:[NSLocalecurrentLocale]];

[_formatter setDateFormat:@"yyy-MM-dd HH:mm"];//[_formatter setDateFormat:@"yyy-MM-dd HH:mm:ss"];

NSString *_strDate=[_formatterstringFromDate:date];

return _strDate;

}

5、检查电话号码

+(BOOL)checkTel:(NSString *)str{

if ([strlength] ==0) {

returnNO;

}

NSString *regex =@"^((13[0-9])|(147)|(15[^4,\\D]|(14[0-9])|(17[0-9]))|(18[0-9]))\\d{8}$";

NSPredicate *pred = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@", regex];

BOOL isMatch = [predevaluateWithObject:str];

if (!isMatch) {

returnNO;

}

returnYES;

}

6、将电话号码中间4位用＊代替

+(NSString *)replacePhoneNumberMiddleWithStar:(NSString *)strPhone{

NSRange ran =NSMakeRange(strPhone.length -8,4);

NSString *sub1 = [strPhonesubstringWithRange:ran];

strPhone = [strPhone stringByReplacingOccurrencesOfString:sub1withString:@"****"];

return strPhone;

}

7、判断字典中是否有nil，如果有就用@“”代替，免得nil报错

+(NSDictionary *)replaceNSDictionaryValue:(NSDictionary *)dictOrgin{

NSDictionary *info = (NSDictionary *)dictOrgin;

NSMutableDictionary *mudict = [NSMutableDictionarydictionary];

for (NSString * keyin info) {

NSString *strValue = [infoobjectForKey:key];

if (!strValue ) {

strValue = @"";

}

strValue = [NSStringstringWithFormat:@"%@",strValue];

if ( [strValuerangeOfString:@"null"].length >0) {

strValue = @"";

}

[mudict setObject:strValueforKey:key];

}

info = [mudict copy];

return info;

}

8、NSString判断是否为空

+(BOOL)IsNull:(NSString *)ranString{

ranString = ranString = [NSStringstringWithFormat:@"%@",ranString];

NSRange ran = [ranStringrangeOfString:@"null"];

if (ran.length >1) {

returnYES;

}

returnNO;

}

9、如果NSString为空，则用@“”代替

+(NSString *)replaceStringNull:(NSString *)ranString{

NSString *resultStr = [NSStringstringWithFormat:@"%@",ranString];

NSRange ran = [resultStrrangeOfString:@"null"];

if (ran.length >1) {

resultStr = [resultStr stringByReplacingOccurrencesOfString:@"null"withString:@""];

}

ran = [resultStr rangeOfString:@"()"];

if (ran.length >1) {

resultStr = [resultStr stringByReplacingOccurrencesOfString:@"()"withString:@""];

}

ran = [resultStr rangeOfString:@"<>"];

if (ran.length >1) {

resultStr = [resultStr stringByReplacingOccurrencesOfString:@"<>"withString:@""];

}

return resultStr;

}

10、替换带哦html标签，如<p>XXXXXXXXX</p>

+(NSString *)replaceHtmlTag:(NSString *)repString{

NSString *strTag =@" ";

NSRange ran = [repStringrangeOfString:strTag];

if (ran.length >0) {

repString = [repString stringByReplacingOccurrencesOfString:strTagwithString:@" "];

repString = [repString stringByReplacingOccurrencesOfString:@" "withString:@" "];

}

return repString;

}

11、打电话

+(void)makeCall:(NSString *)phoneNumber{

NSString *deviceType = [UIDevicecurrentDevice].model;

if([deviceType isEqualToString:@"iPod touch"]||[deviceType isEqualToString:@"iPad"]||[deviceType isEqualToString:@"iPhone Simulator"]){//

UIAlertView *alert=[[UIAlertViewalloc]initWithTitle:@"提示"message:@"您的设备不能打电话"delegate:nilcancelButtonTitle:@"好的,知道了"otherButtonTitles:nil,nil];

[alert show];

return;

}

NSString *tel = phoneNumber ;

NSString *num = [[NSStringalloc]initWithFormat:@"tel://%@",tel];

[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:num]];

}

12、根据经纬度计算距离

#define PI 3.1415926

+ (double) LantitudeLongitudeDist:(double)lon1 other_Lat:(double)lat1 self_Lon:(double)lon2 self_Lat:(double)lat2{

double er =6378137;// 6378700.0f;

//ave. radius = 6371.315 (someone said more accurate is 6366.707)

//equatorial radius = 6378.388

//nautical mile = 1.15078

double radlat1 =PI*lat1/180.0f;

double radlat2 =PI*lat2/180.0f;

//now long.

double radlong1 =PI*lon1/180.0f;

double radlong2 =PI*lon2/180.0f;

if( radlat1 <0 ) radlat1 =PI/2 +fabs(radlat1);// south

if( radlat1 >0 ) radlat1 =PI/2 -fabs(radlat1);// north

if( radlong1 <0 ) radlong1 =PI*2 -fabs(radlong1);//west

if( radlat2 <0 ) radlat2 =PI/2 +fabs(radlat2);// south

if( radlat2 >0 ) radlat2 =PI/2 -fabs(radlat2);// north

if( radlong2 <0 ) radlong2 =PI*2 -fabs(radlong2);// west

//spherical coordinates x=r*cos(ag)sin(at), y=r*sin(ag)*sin(at), z=r*cos(at)

//zero ag is up so reverse lat

double x1 = er *cos(radlong1) *sin(radlat1);

double y1 = er *sin(radlong1) *sin(radlat1);

double z1 = er *cos(radlat1);

double x2 = er *cos(radlong2) *sin(radlat2);

double y2 = er *sin(radlong2) *sin(radlat2);

double z2 = er *cos(radlat2);

double d =sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)+(z1-z2)*(z1-z2));

//side, side, side, law of cosines and arccos

double theta =acos((er*er+er*er-d*d)/(2*er*er));

double dist = theta*er;

return dist /1000;

}

13、16进制颜色转换成UIColor

+ (UIColor *) colorWithHexString: (NSString *)color

{

NSString *cString = [[colorstringByTrimmingCharactersInSet:[NSCharacterSetwhitespaceAndNewlineCharacterSet]]uppercaseString];

// String should be 6 or 8 characters

if ([cStringlength] <6) {

return [UIColorclearColor];

}

// strip 0X if it appears

if ([cStringhasPrefix:@"0X"])

cString = [cString substringFromIndex:2];

if ([cStringhasPrefix:@"#"])

cString = [cString substringFromIndex:1];

if ([cStringlength] !=6)

return [UIColorclearColor];

// Separate into r, g, b substrings

NSRange range;

range.location =0;

range.length =2;

//r

NSString *rString = [cStringsubstringWithRange:range];

//g

range.location =2;

NSString *gString = [cStringsubstringWithRange:range];

//b

range.location =4;

NSString *bString = [cStringsubstringWithRange:range];

// Scan values

unsignedint r, g, b;

[[NSScannerscannerWithString:rString]scanHexInt:&r];

[[NSScannerscannerWithString:gString]scanHexInt:&g];

[[NSScannerscannerWithString:bString]scanHexInt:&b];

return [UIColorcolorWithRed:((float) r /255.0f) green:((float) g /255.0f)blue:((float) b /255.0f)alpha:1.0f];

}

14、使图片显示成聊天气泡样式

转自：http://blog.csdn.net/kevinpake/article/details/41205715

_maskLayer = [CAShapeLayer layer];
_maskLayer.fillColor = [UIColor blackColor].CGColor;
_maskLayer.strokeColor = [UIColor clearColor].CGColor;
_maskLayer.frame = self.bounds;
_maskLayer.contentsCenter = CGRectMake(0.5, 0.5, 0.1, 0.1);
_maskLayer.contentsScale = [UIScreen mainScreen].scale; //非常关键设置自动拉伸的效果且不变形
_maskLayer.contents = (id)[UIImage imageNamed:@"gray_bubble_right@2x.png"].CGImage;
_contentLayer = [CALayer layer];
_contentLayer.mask = _maskLayer;
_contentLayer.frame = self.bounds;
[self.layer addSublayer:_contentLayer];

15、tableview 跳转到最下面

NSIndexPath *lastPath = [NSIndexPathindexPathForRow:self.array.count -1 inSection:0];

[self.tableViewscrollToRowAtIndexPath:lastPath atScrollPosition:UITableViewScrollPositionBottomanimated:YES];

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