1.判断是否含有非法字符
+ (BOOL)JudgeTheillegalCharacter:(NSString *)content{
NSString *str =@"^[A-Za-z0-9\\u4e00-\u9fa5]+$";
NSPredicate* emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", str];
if (![emailTest evaluateWithObject:content]) {
return YES;
}
return NO;
}
2.获取当前的时间
+ (NSString*)getCurrentTimes{
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
// ----------设置你想要的格式,hh与HH的区别:分别表示12小时制,24小时制
[formatter setDateFormat:@"YYYY年MM月dd日"];
//现在时间,你可以输出来看下是什么格式
NSDate *datenow = [NSDate date];
//----------将nsdate按formatter格式转成nsstring
NSString *currentTimeString = [formatter stringFromDate:datenow];
NSLog(@"currentTimeString = %@",currentTimeString);
return currentTimeString;
}
3.手机号码校验
+ (BOOL)checkMobilePhoneNumber:(NSString *)phoneNumber {
if (xNullString(phoneNumber)) {
[self alertViewWithMessage:@"号码为空" cancelTitle:@"知道了"];
return NO;
}
if ([phoneNumber containsString:@"appletest"]) {
return YES;
}
NSString *regex = @"^(13[0-9]|14[579]|15[0-3,5-9]|16[6]|17[0135678]|18[0-9]|19[89])\\d{8}$";
NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
BOOL isMatch = [pred evaluateWithObject:phoneNumber];
if (!isMatch) {
[self alertViewWithMessage:@"请输入正确的手机号" cancelTitle:@"知道了"];
return NO;
}
return YES;
}
4.判断NSString是否为空
#define xNullString(string) ((![string isKindOfClass:[NSString class]]) || [string isEqualToString:@""] || (string == nil) || [string isEqualToString:@""] || [string isKindOfClass:[NSNull class]] || [[string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] length] == 0)
5.获取tabBar statusBar 高度
#define xTabBarHeight ([[UIApplication sharedApplication] statusBarFrame].size.height > 20.0f ? 83.0f : 49.0f)
#define xStatusBarHeight ([[UIApplication sharedApplication] statusBarFrame].size.height)
6.判断是否为iPhoneX
#define IS_iPhoneX ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1125, 2436), [[UIScreen mainScreen] currentMode].size) : NO)
7.禁止手机睡眠
[UIApplication sharedApplication].idleTimerDisabled = YES;
8.去除数组中重复的对象
NSArray *newArr = [oldArr valueForKeyPath:@“@distinctUnionOfObjects.self"];
9.动画切换window的根控制器
// options是动画选项
[UIView transitionWithView:[UIApplication sharedApplication].keyWindow duration:0.5f options:UIViewAnimationOptionTransitionCrossDissolve animations:^{
BOOL oldState = [UIView areAnimationsEnabled];
[UIView setAnimationsEnabled:NO];
[UIApplication sharedApplication].keyWindow.rootViewController = [RootViewController new];
[UIView setAnimationsEnabled:oldState];
} completion:^(BOOL finished) {
}];
10.设置navigationBar上的title颜色和大小
[self.navigationController.navigationBar setTitleTextAttributes:@{NSForegroundColorAttributeName : [UIColor youColor], NSFontAttributeName : [UIFont systemFontOfSize:15]}]
11.颜色转图片
+ (UIImage *)cl_imageWithColor:(UIColor *)color {
CGRect rect = CGRectMake(0.0f, 0.0f, 1.0f, 1.0f);
UIGraphicsBeginImageContext(rect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [color CGColor]);
CGContextFillRect(context, rect);
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
returnimage;
}
12.由角度转换弧度，由弧度转换角度
#define DegreesToRadian(x) (M_PI * (x) / 180.0)
#define RadianToDegrees(radian) (radian*180.0)/(M_PI)
13.自定义NSLog
#ifdef DEBUG
#define NSLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)
#else
#define NSLog(...)
#endif
14.修改textField的placeholder的字体颜色、大小
[textField setValue:[UIColor redColor] forKeyPath:@"_placeholderLabel.textColor"];
[textField setValue:[UIFont boldSystemFontOfSize:16] forKeyPath:@"_placeholderLabel.font"];
15.将image保存在相册中
UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);
或者
[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
PHAssetChangeRequest *changeRequest = [PHAssetChangeRequest creationRequestForAssetFromImage:image];
changeRequest.creationDate = [NSDate date];
} completionHandler:^(BOOL success, NSError *error) {
if(success) {
NSLog(@"successfully saved");
}
else{
NSLog(@"error saving to photos: %@", error);
}
}];
16.获取视频的第一帧图片
NSURL *url = [NSURL URLWithString:filepath];
AVURLAsset *asset1 = [[AVURLAsset alloc] initWithURL:url options:nil];
AVAssetImageGenerator *generate1 = [[AVAssetImageGenerator alloc] initWithAsset:asset1];
generate1.appliesPreferredTrackTransform = YES;
NSError *err = NULL;
CMTime time = CMTimeMake(1, 2);
CGImageRef oneRef = [generate1 copyCGImageAtTime:time actualTime:NULL error:&err];
UIImage *one = [[UIImage alloc] initWithCGImage:oneRef];
return one;
17.移除字符串中的空格和换行
+ (NSString *)removeSpaceAndNewline:(NSString *)str {
NSString *temp = [str stringByReplacingOccurrencesOfString:@" "withString:@""];
temp = [temp stringByReplacingOccurrencesOfString:@"\r"withString:@""];
temp = [temp stringByReplacingOccurrencesOfString:@"\n"withString:@""];
return temp;
}
18.身份证号验证
- (BOOL)validateIdentityCard {
BOOL flag;
if(self.length <= 0) {
flag = NO;
returnflag;
}
NSString *regex2 = @"^(\\d{14}|\\d{17})(\\d|[xX])$";
NSPredicate *identityCardPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];
return [identityCardPredicate evaluateWithObject:self];
}
19.image圆角
- (UIImage *)circleImage
{
// NO代表透明
UIGraphicsBeginImageContextWithOptions(self.size, NO, 1);
// 获得上下文
CGContextRef ctx = UIGraphicsGetCurrentContext();
// 添加一个圆
CGRect rect = CGRectMake(0, 0, self.size.width, self.size.height);
// 方形变圆形
CGContextAddEllipseInRect(ctx, rect);
// 裁剪
CGContextClip(ctx);
// 将图片画上去
[self drawInRect:rect];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
returnimage;
}
20.压缩图片到指定大小
- (UIImage *)compressImage:(UIImage *)image toByte:(NSUInteger)maxLength {
// Compress by quality
CGFloat compression = 1;
NSData *data = UIImageJPEGRepresentation(image, compression);
if (data.length < maxLength) return image;
CGFloat max = 1;
CGFloat min = 0;
for (int i = 0; i < 6; ++i) {
compression = (max + min) / 2;
data = UIImageJPEGRepresentation(image, compression);
if (data.length < maxLength * 0.9) {
min = compression;
} else if (data.length > maxLength) {
max = compression;
} else {
break;
}
}
UIImage *resultImage = [UIImage imageWithData:data];
if (data.length < maxLength) return resultImage;
// Compress by size
NSUInteger lastDataLength = 0;
while (data.length > maxLength && data.length != lastDataLength) {
lastDataLength = data.length;
CGFloat ratio = (CGFloat)maxLength / data.length;
CGSize size = CGSizeMake((NSUInteger)(resultImage.size.width * sqrtf(ratio)),
(NSUInteger)(resultImage.size.height * sqrtf(ratio))); // Use NSUInteger to prevent white blank
UIGraphicsBeginImageContext(size);
[resultImage drawInRect:CGRectMake(0, 0, size.width, size.height)];
resultImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
data = UIImageJPEGRepresentation(resultImage, compression);
}
return resultImage;
}
21.设置navigationBar上的title颜色和大小
[self.navigationController.navigationBar setTitleTextAttributes:@{NSForegroundColorAttributeName : [UIColor youColor], NSFontAttributeName : [UIFont systemFontOfSize:15]}];
22.获取app缓存大小
- (CGFloat)getCachSize {
NSUInteger imageCacheSize = [[SDImageCache sharedImageCache] getSize];
//获取自定义缓存大小
//用枚举器遍历 一个文件夹的内容
//1.获取 文件夹枚举器
NSString *myCachePath = [NSHomeDirectory() stringByAppendingPathComponent:@"Library/Caches"];
NSDirectoryEnumerator *enumerator = [[NSFileManager defaultManager] enumeratorAtPath:myCachePath];
__block NSUInteger count = 0;
//2.遍历
for(NSString *fileName inenumerator) {
NSString *path = [myCachePath stringByAppendingPathComponent:fileName];
NSDictionary *fileDict = [[NSFileManager defaultManager] attributesOfItemAtPath:path error:nil];
count += fileDict.fileSize;//自定义所有缓存大小
}
// 得到是字节 转化为M
CGFloat totalSize = ((CGFloat)imageCacheSize+count)/1024/1024;
returntotalSize;
}
23.几个常用权限判断
if([CLLocationManager authorizationStatus] ==kCLAuthorizationStatusDenied) {
NSLog(@"没有定位权限");
}
AVAuthorizationStatus statusVideo = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
if(statusVideo == AVAuthorizationStatusDenied) {
NSLog(@"没有摄像头权限");
}
//是否有麦克风权限
AVAuthorizationStatus statusAudio = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeAudio];
if(statusAudio == AVAuthorizationStatusDenied) {
NSLog(@"没有录音权限");
}
[PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
if(status == PHAuthorizationStatusDenied) {
NSLog(@"没有相册权限");
}
}];
24.判断图片类型
//通过图片Data数据第一个字节 来获取图片扩展名
- (NSString *)contentTypeForImageData:(NSData *)data
{
uint8_t c;
[data getBytes:&c length:1];
switch(c)
{
case0xFF:
return @"jpeg";
case0x89:
return @"png";
case0x47:
return @"gif";
case0x49:
case0x4D:
return@"tiff";
case0x52:
if([data length] < 12) {
return nil;
}
NSString *testString = [[NSString alloc] initWithData:[data subdataWithRange:NSMakeRange(0, 12)] encoding:NSASCIIStringEncoding];
if([testString hasPrefix:@"RIFF"]
&& [testString hasSuffix:@"WEBP"])
{
return@"webp";
}
return nil;
}
return nil;
}
25.获取手机和app信息
NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
CFShow(infoDictionary);
// app名称
NSString *app_Name = [infoDictionary objectForKey:@"CFBundleDisplayName"];
// app版本
NSString *app_Version = [infoDictionary objectForKey:@"CFBundleShortVersionString"];
// app build版本
NSString *app_build = [infoDictionary objectForKey:@"CFBundleVersion"];
//手机序列号
NSString* identifierNumber = [[UIDevice currentDevice] uniqueIdentifier];
NSLog(@"手机序列号: %@",identifierNumber);
//手机别名： 用户定义的名称
NSString* userPhoneName = [[UIDevice currentDevice] name];
NSLog(@"手机别名: %@", userPhoneName);
//设备名称
NSString* deviceName = [[UIDevice currentDevice] systemName];
NSLog(@"设备名称: %@",deviceName );
//手机系统版本
NSString* phoneVersion = [[UIDevice currentDevice] systemVersion];
NSLog(@"手机系统版本: %@", phoneVersion);
//手机型号
NSString* phoneModel = [[UIDevice currentDevice] model];
NSLog(@"手机型号: %@",phoneModel );
//地方型号 （国际化区域名称）
NSString* localPhoneModel = [[UIDevice currentDevice] localizedModel];
NSLog(@"国际化区域名称: %@",localPhoneModel );
NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
// 当前应用名称
NSString *appCurName = [infoDictionary objectForKey:@"CFBundleDisplayName"];
NSLog(@"当前应用名称：%@",appCurName);
// 当前应用软件版本 比如：1.0.1
NSString *appCurVersion = [infoDictionary objectForKey:@"CFBundleShortVersionString"];
NSLog(@"当前应用软件版本:%@",appCurVersion);
// 当前应用版本号码 int类型
NSString *appCurVersionNum = [infoDictionary objectForKey:@"CFBundleVersion"];
NSLog(@"当前应用版本号码：%@",appCurVersionNum);
26.获取一个类的所有属性
id LenderClass = objc_getClass("Lender");
unsigned int outCount, i;
objc_property_t *properties = class_copyPropertyList(LenderClass, &outCount);
for(i = 0; i < outCount; i++) {
objc_property_t property = properties[i];
fprintf(stdout, "%s %s\n", property_getName(property), property_getAttributes(property));
}
27.获得灰度图
+ (UIImage*)covertToGrayImageFromImage:(UIImage*)sourceImage
{
int width = sourceImage.size.width;
int height = sourceImage.size.height;
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceGray();
CGContextRef context = CGBitmapContextCreate (nil,width,height,8,0,colorSpace,kCGImageAlphaNone);
CGColorSpaceRelease(colorSpace);
if(context == NULL) {
return nil;
}
CGContextDrawImage(context,CGRectMake(0, 0, width, height), sourceImage.CGImage);
CGImageRef contextRef = CGBitmapContextCreateImage(context);
UIImage *grayImage = [UIImage imageWithCGImage:contextRef];
CGContextRelease(context);
CGImageRelease(contextRef);
return grayImage;
}
28.为imageView添加倒影
CGRect frame = self.frame;
frame.origin.y += (frame.size.height + 1);
UIImageView *reflectionImageView = [[UIImageView alloc] initWithFrame:frame];
self.clipsToBounds = TRUE;
reflectionImageView.contentMode = self.contentMode;
[reflectionImageView setImage:self.image];
reflectionImageView.transform = CGAffineTransformMakeScale(1.0, -1.0);
CALayer *reflectionLayer = [reflectionImageView layer];
CAGradientLayer *gradientLayer = [CAGradientLayer layer];
gradientLayer.bounds = reflectionLayer.bounds;
gradientLayer.position = CGPointMake(reflectionLayer.bounds.size.width / 2, reflectionLayer.bounds.size.height * 0.5);
gradientLayer.colors = [NSArray arrayWithObjects:
(id)[[UIColor clearColor] CGColor],
(id)[[UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:0.3] CGColor], nil];
gradientLayer.startPoint = CGPointMake(0.5,0.5);
gradientLayer.endPoint = CGPointMake(0.5,1.0);
reflectionLayer.mask = gradientLayer;
[self.superview addSubview:reflectionImageView];
29.画水印
// 画水印
- (void) setImage:(UIImage *)image withWaterMark:(UIImage *)mark inRect:(CGRect)rect
{
if([[[UIDevice currentDevice] systemVersion] floatValue] >= 4.0)
{
UIGraphicsBeginImageContextWithOptions(self.frame.size, NO, 0.0);
}
//原图
[image drawInRect:self.bounds];
//水印图
[mark drawInRect:rect];
UIImage *newPic = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
self.image = newPic;
}
30.获取视频的时长
+ (NSInteger)getVideoTimeByUrlString:(NSString *)urlString {
NSURL *videoUrl = [NSURL URLWithString:urlString];
AVURLAsset *avUrl = [AVURLAsset assetWithURL:videoUrl];
CMTime time = [avUrl duration];
int seconds = ceil(time.value/time.timescale);
returnseconds;
}
31.UILabel设置内边距
//子类化UILabel，重写drawTextInRect方法
- (void)drawTextInRect:(CGRect)rect {
// 边距，上左下右
UIEdgeInsets insets = {0, 5, 0, 5};
[superdrawTextInRect:UIEdgeInsetsInsetRect(rect, insets)];
}
32.UILabel设置文字描边
//子类化UILabel，重写drawTextInRect方法
- (void)drawTextInRect:(CGRect)rect
{
CGContextRef c = UIGraphicsGetCurrentContext();
// 设置描边宽度
CGContextSetLineWidth(c, 1);
CGContextSetLineJoin(c, kCGLineJoinRound);
CGContextSetTextDrawingMode(c, kCGTextStroke);
// 描边颜色
self.textColor = [UIColor redColor];
[superdrawTextInRect:rect];
// 文本颜色
self.textColor = [UIColor yellowColor];
CGContextSetTextDrawingMode(c, kCGTextFill);
[superdrawTextInRect:rect];
}
33.压缩图片到指定尺寸
- (UIImage*)imageWithImage:(UIImage*)image scaledToSize:(CGSize)newSize{
// Create a graphics image context
UIGraphicsBeginImageContext(newSize);
// Tell the old image to draw in this new context, with the desired
// new size
[image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
// Get the new image from the context
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
// End the context
UIGraphicsEndImageContext();
// Return the new image.
return newImage;
}
34.压缩图片到指定大小
- (UIImage *)compressImage:(UIImage *)image toByte:(NSUInteger)maxLength {
CGFloat compression = 1;
NSData *data = UIImageJPEGRepresentation(image, compression);
if (data.length < maxLength) return image;
CGFloat max = 1;
CGFloat min = 0;
for (int i = 0; i < 6; ++i) {
compression = (max + min) / 2;
data = UIImageJPEGRepresentation(image, compression);
if (data.length < maxLength * 0.9) {
min = compression;
} else if (data.length > maxLength) {
max = compression;
} else {
break;
}
}
UIImage *resultImage = [UIImage imageWithData:data];
if (data.length < maxLength) return resultImage;
NSUInteger lastDataLength = 0;
while (data.length > maxLength && data.length != lastDataLength) {
lastDataLength = data.length;
CGFloat ratio = (CGFloat)maxLength / data.length;
CGSize size = CGSizeMake((NSUInteger)(resultImage.size.width * sqrtf(ratio)),
(NSUInteger)(resultImage.size.height * sqrtf(ratio))); // Use NSUInteger to prevent white blank
UIGraphicsBeginImageContext(size);
[resultImage drawInRect:CGRectMake(0, 0, size.width, size.height)];
resultImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
data = UIImageJPEGRepresentation(resultImage, compression);
}
return resultImage;
}
34. 获取 wlan 的 macIP
+ (NSString*)getWLANMacIP {
NSString*ssid =@"Not Found";
NSString*macIp =@"Not Found";
CFArrayRef myArray = CNCopySupportedInterfaces();
if(myArray !=nil) {
CFDictionaryRef myDict = CNCopyCurrentNetworkInfo(CFArrayGetValueAtIndex(myArray, 0));
if(myDict !=nil) {
NSDictionary*dict = (NSDictionary*)CFBridgingRelease(myDict);
ssid = [dict valueForKey:@"SSID"];
macIp = [dic valueForKey:@"BSSID"];
} }
NSLog(@"ssid: %@", ssid);
return macIp;
}
35.获取字符串宽度
+ (CGFloat)getWidthString:(NSString*)wString font:(UIFont*)fFont {
NSDictionary *fontDic = @{NSFontAttributeName:fFont};
CGRect rect = [wString boundingRectWithSize:CGSizeMake(CGFLOAT_MAX, 0.0f) options:NSStringDrawingUsesLineFragmentOrigin attributes:fontDic context:nil];
return ceilf(rect.size.width);
}
36. 获取字符串高度
+ (CGFloat)getHeightString:(NSString*)hString font:(UIFont*)font width:(CGFloat)width {
NSDictionary *fontDic = @{NSFontAttributeName : font};
CGRect contentRect = [hString boundingRectWithSize:CGSizeMake(width, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin attributes:fontDic context:nil];
return ceilf(contentRect.size.height);
}
37.改变图片的透明度
+ (UIImage*)imageByApplyingAlpha:(CGFloat)alpha image:(UIImage*)image {
UIGraphicsBeginImageContextWithOptions(image.size, NO, 0.0f);
CGContextRef ctx = UIGraphicsGetCurrentContext();
CGRectarea =CGRectMake(0,0, image.size.width, image.size.height);
CGContextScaleCTM(ctx, 1, -1);
CGContextTranslateCTM(ctx, 0, -area.size.height);
CGContextSetBlendMode(ctx, kCGBlendModeMultiply);
CGContextSetAlpha(ctx, alpha);
CGContextDrawImage(ctx, area, image.CGImage);
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return newImage;
}
38.获取手机的运营商
+ (NSString*)operator{
//获取本机运营商名称
CTTelephonyNetworkInfo *info = [[CTTelephonyNetworkInfo alloc] init];
CTCarrier *carrier = [info subscriberCellularProvider];
//当前手机所属运营商名称
NSString*mobile;
//先判断有没有SIM卡，如果没有则不获取本机运营商
if(!carrier.isoCountryCode) {
CLLog(@"没有SIM卡");
mobile =@"无运营商";
}else{
mobile = [carriercarrierName];
}
return mobile;
}
39.震动反馈(iOS10以后)
UIImpactFeedbackGenerator *feedBackGenertor = [[UIImpactFeedbackGenerator alloc] initWithStyle:UIImpactFeedbackStyleMedium];
[feedBackGenertor impactOccurred];
40.震动加音效
AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
41.汉语转拼音
+ (NSString*)getPinYinFromString:(NSString*)string{
CFMutableStringRef aCstring = CFStringCreateMutableCopy(NULL, 0, (__bridge_retained CFStringRef)string);
/**
* 创建可变CFString
*
* @paramNULL 使用默认创建器
* @param0 长度不限制
* @param"张三" cf字串
*
* @return可变字符串
*/
/**
* 1. string: 要转换的字符串(可变的)
2. range: 要转换的范围 NULL全转换
3. transform: 指定要怎样的转换
4. reverse: 是否可逆的转换
*/
CFStringTransform(aCstring, NULL, kCFStringTransformMandarinLatin, NO);
CFStringTransform(aCstring, NULL, kCFStringTransformStripDiacritics, NO);
NSLog(@"%@",aCstring);
return [NSString stringWithFormat:@"%@",aCstring];
}
42.判断字符串是否以字母开头
- (BOOL)isEnglishFirst:(NSString *)str {
NSString *regular = @"^[A-Za-z].+$";
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regular];
if ([predicate evaluateWithObject:str] == YES){
return YES;
}else{
return NO;
}
43.判断字符串是否以汉字开头
- (BOOL)isChineseFirst:(NSString *)str {
int utfCode = 0;
void *buffer = &utfCode;
NSRange range = NSMakeRange(0, 1);
BOOL b = [str getBytes:buffer maxLength:2 usedLength:NULL encoding:NSUTF16LittleEndianStringEncoding options:NSStringEncodingConversionExternalRepresentation range:range remainingRange:NULL];
if (b && (utfCode >= 0x4e00 && utfCode <= 0x9fa5)){
return YES;
}else{
return NO;
}
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