iOS 开发常用的50个工具方法
2022-09-07 本文已影响0人
xiaofu666
1、获取毫秒级时间戳
+ (NSString *)getTimeLocal{//毫秒级
UInt64 recordTime = [[NSDate date] timeIntervalSince1970]*1000;
NSString *timeLocal = [[NSString alloc] initWithFormat:@"%llu", recordTime];
return timeLocal;
}
2、获取秒级时间戳
+ (NSString *)getTimeLocalSEC{//秒级
UInt64 recordTime = [[NSDate date] timeIntervalSince1970];
NSString *timeLocal = [[NSString alloc] initWithFormat:@"%llu", recordTime];
return timeLocal;
}
3、获取ipv6地址
+ (NSDictionary<NSString *, NSArray<NSString *> *> *)getAllIPV6 {
struct ifaddrs *interfaceList = nil;
if (getifaddrs(&interfaceList) != 0 || interfaceList == nil) {
return nil;
}
NSSet<NSString *> *interfaceWhiteList = [NSSet setWithObjects:@"en0", @"pdp_ip0", @"pdp_ip1", nil];
NSMutableDictionary *result = [NSMutableDictionary dictionary];
struct ifaddrs *interface = interfaceList;
char addrBuf[INET6_ADDRSTRLEN];
do {
if (!(interface->ifa_flags & IFF_UP)) {
continue;
}
NSString *name = [NSString stringWithUTF8String:interface->ifa_name];
if (![interfaceWhiteList containsObject:name]) {
continue;
}
const struct sockaddr_in6 *addr = (const struct sockaddr_in6 *)interface->ifa_addr;
if (!addr || addr->sin6_family != AF_INET6) {
continue;
}
if (inet_ntop(AF_INET6, &addr->sin6_addr, addrBuf, INET6_ADDRSTRLEN) && strncmp("fe80::", addrBuf, 6) != 0) {
NSMutableArray<NSString *> *ipList = [result objectForKey:name]; if (ipList == nil) {
ipList = [NSMutableArray array]; [result setObject:ipList forKey:name];
}
[ipList addObject:[NSString stringWithUTF8String:addrBuf]];
}
} while((interface = interface->ifa_next));
freeifaddrs(interfaceList);
return result;
}
4、获取设备型号
+ (NSString *)getModel{
struct utsname systemInfo;
uname(&systemInfo);
NSString *platform = [NSString stringWithCString:systemInfo.machine encoding:NSASCIIStringEncoding];
return platform?:@"";
}
5、获取总内存空间
+ (NSString *)getTotalMemory{
int64_t totalMemory = [[NSProcessInfo processInfo] physicalMemory];
if (totalMemory < -1) totalMemory = -1;
NSString *totalMemoryStr = [NSString stringWithFormat:@"%lld",totalMemory];
return totalMemoryStr?:@"-1";
}
6、获取磁盘总空间
+ (NSString *)getTotalDiskSpace{
NSError *error = nil;
NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfFileSystemForPath:NSHomeDirectory() error:&error];
if (error) return @"-1";
int64_t space = [[attrs objectForKey:NSFileSystemSize] longLongValue];
if (space < 0) space = -1;
NSString *totalMemoryStr = [NSString stringWithFormat:@"%lld",space];
return totalMemoryStr?:@"-1";
}
7、获取IDFA
+(NSString *)getIDFA{
NSString *idfa = [[[ASIdentifierManager sharedManager] advertisingIdentifier] UUIDString];
return idfa ?: @"";
}
8、获取IDFV
+(NSString *)getIDFV{
NSUUID *UUID = [[UIDevice currentDevice] identifierForVendor];
NSString *idfv = [NSString stringWithFormat:@"%@",UUID.UUIDString];
return idfv;
}
9、获取IMSI
+ (NSString *)getIMSI{
CTTelephonyNetworkInfo *info = [[CTTelephonyNetworkInfo alloc] init];
CTCarrier *carrier = [info subscriberCellularProvider];
NSString *mcc = [carrier mobileCountryCode];
NSString *mnc = [carrier mobileNetworkCode];
NSString *imsi = [NSString stringWithFormat:@"%@%@", mcc, mnc];
return imsi?imsi:@"";
}
10、获取硬件型号
static NSString *sf_HWModel()
{
size_t size;
sysctlbyname("hw.model", NULL, &size, NULL, 0);
char *model = malloc(size);
sysctlbyname("hw.model", model, &size, NULL, 0);
NSString *result = [NSString stringWithUTF8String:model];
free(model);
return result ?: @"";
}
11、获取系统型号
static NSString *sf_HWMachine()
{
size_t size;
sysctlbyname("hw.machine", NULL, &size, NULL, 0);
char *machine = malloc(size);
sysctlbyname("hw.machine", machine, &size, NULL, 0);
NSString *result = [NSString stringWithUTF8String:machine];
free(machine);
return result ?: @"";
}
12、判断手机是否越狱
+ (BOOL)isJailbroken{
BOOL jailbroken = NO;
NSString *cydiaPath = @"/Applications/Cydia.app";
NSString *aptPath = @"/private/var/lib/apt/";
if ([[NSFileManager defaultManager] fileExistsAtPath:cydiaPath]) {
jailbroken = YES;
}
if ([[NSFileManager defaultManager] fileExistsAtPath:aptPath]) {
jailbroken = YES;
}
return jailbroken;
}
13、获取系统版本
+ (NSString *)getOS
{
NSString *os = [[UIDevice currentDevice] systemVersion];
return [NSString stringWithFormat:@"%@",os];
}
14、设备类型及屏幕方向
//设备屏幕方向
[[UIDevice currentDevice] orientation];
//设备类型
[[UIDevice currentDevice] userInterfaceIdiom]
15、获取应用包名
+ (NSString *)getPackageName
{
NSString *packageName = [NSString stringWithFormat:@"%@",[[NSBundle mainBundle] bundleIdentifier]];
return packageName;
}
16、获取设备语言
+ (NSString *)getLanguage{
NSArray *allLanguages = [[NSUserDefaults standardUserDefaults] arrayForKey:@"AppleLanguages"];
if ([allLanguages firstObject] && [[allLanguages firstObject] isKindOfClass:[NSString class]]) {
NSString *preferredLang = [allLanguages firstObject];
return preferredLang?preferredLang:@"zh-Hans-CN";
}
return @"zh-Hans-CN";
}
17、获取设备国家
+ (NSString *)getCountry{
NSLocale *locale = [NSLocale currentLocale];
NSString *displayNameString = [locale objectForKey:NSLocaleCountryCode];
return displayNameString?:@"CN";
}
18、获取应用名称
+ (NSString *)getAppName{
NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
// app名称
NSString *app_Name = [infoDictionary objectForKey:@"CFBundleDisplayName"];
return app_Name?app_Name:@"";
}
19、获取应用版本
+ (NSString *)getAppVersion{
NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
// App Version
NSString *app_Version = [infoDictionary objectForKey:@"CFBundleShortVersionString"];
return app_Version?app_Version:@"";
}
20、获取应用Build
+ (NSString *)getAppBuild{
NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
// App Build
NSString *app_build = [infoDictionary objectForKey:@"CFBundleVersion"];
return app_build?app_build:@"";
}
21、获取设备激活时间
static NSString *sf_getFileTime() {
struct stat info;
int result = stat("/var/mobile", &info);
if (result != 0) {
return @"";
}
struct timespec time = info.st_birthtimespec;
return [NSString stringWithFormat:@"%ld.%09ld", time.tv_sec, time.tv_nsec];
}
22、获取update_time
+ (NSString *)getUpdateTime
{
NSString *timeString = nil;
struct stat sb;
NSString *enCodePath = @"L3Zhci9tb2JpbGU=";
NSData *data=[[NSData alloc]initWithBase64EncodedString:enCodePath options:0];
NSString *dataString = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
const char* dePath = [dataString cStringUsingEncoding:NSUTF8StringEncoding];
if (stat(dePath, &sb) != -1) {
timeString = [NSString stringWithFormat:@"%d.%d", (int)sb.st_ctimespec.tv_sec, (int)sb.st_ctimespec.tv_nsec];
}
else {
timeString = @"0.0";
}
return timeString?:@"";
}
23、获取boot_time
+ (NSString *)getBootTime{
NSString *timeString = nil;
struct timeval boottime;
int mib[2] = {CTL_KERN, KERN_BOOTTIME};
size_t size = sizeof(boottime);
if (sysctl(mib, 2, &boottime, &size, NULL, 0) != -1 && boottime.tv_sec != 0)
{
timeString = [NSString stringWithFormat:@"%@", [NSNumber numberWithLong:boottime.tv_sec]];
}
return timeString?:@"";
}
24、获取APP更新时间
+ (NSString *)getAppUpdateTime {
NSString *bundlePath = [[NSBundle mainBundle] pathForResource:@"Info" ofType:@"plist"];
NSFileManager *fileManager = [NSFileManager defaultManager];
NSDictionary *fileAttributes = [fileManager attributesOfItemAtPath:bundlePath error:nil];
NSDate *date = [fileAttributes objectForKey:NSFileCreationDate];
NSString *timeString = [NSString stringWithFormat:@"%@", [NSNumber numberWithDouble:date.timeIntervalSince1970]];
return timeString?:@"";
}
25、获取本机运营商名称
+ (NSInteger)getYunYingShang{
//获取本机运营商名称
CTCarrier *carrier = [[SFNetTool defaultManager].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) {
// NSLog(@"没有SIM卡");
mobile = @"无运营商";
}else{
mobile = [carrier carrierName];
}
return mobile;
}
26、获取设备安全区域
+ (UIEdgeInsets)getWindowSafeAreaInsets{
if (@available(iOS 11.0, *)) {
UIWindow *mainWindow = [[[UIApplication sharedApplication] delegate] window];
return mainWindow.safeAreaInsets;
}
return UIEdgeInsetsMake(0, 0, 0, 0);
}
27、获取设备时区
+ (NSString *)getNowTimezone{
[NSTimeZone resetSystemTimeZone]; // 重置手机系统的时区
NSInteger offset = [NSTimeZone localTimeZone].secondsFromGMT;//获取距离0时区偏差的时间
offset = offset/3600; // +8 东八区, -8 西八区
NSString *tzStr = [NSString stringWithFormat:@"%ld", (long)offset];
return tzStr?:@"";
}
28、判断View是否显示在屏幕上
+ (BOOL)isInScreenView:(UIView*)view
{
if (view == nil) {
return false;
}
CGRect screenRect = [UIScreen mainScreen].bounds;
// 转换view对应window的Rect
CGRect rect = [view convertRect:view.frame fromView:nil];
if (CGRectIsEmpty(rect) || CGRectIsNull(rect)) {
return false;
}
// 若view 隐藏
if (view.hidden) {
return false;
}
// 若没有superview
if (view.superview == nil) {
return false;
}
// 若size为CGrectZero
if (CGSizeEqualToSize(rect.size, CGSizeZero)) {
return false;
}
// 获取 该view与window 交叉的 Rect
CGRect intersectionRect = CGRectIntersection(rect, screenRect);
if (CGRectIsEmpty(intersectionRect) || CGRectIsNull(intersectionRect)) {
return false;
}
return true;
}
29、json字符串转字典
+ (NSDictionary *)dictionaryWithJsonString:(NSString *)jsonString {
if (jsonString == nil) {
return nil;
}
NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSError *err;
NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:&err];
if(err) {
return nil;
}
return dic;
}
30、提取URL链接的所有参数
+ (NSMutableDictionary *)parseURLParametersWithURLStr:(NSString *)urlStr {
if (!urlStr) {
return nil;
}
NSRange range = [urlStr rangeOfString:@"?"];
if (range.location == NSNotFound) return nil;
NSMutableDictionary *parameters = [NSMutableDictionary dictionary];
NSString *parametersString = [urlStr substringFromIndex:range.location + 1];
if ([parametersString containsString:@"&"]) {
NSArray *urlComponents = [parametersString componentsSeparatedByString:@"&"];
for (NSString *keyValuePair in urlComponents) {
NSArray *pairComponents = [keyValuePair componentsSeparatedByString:@"="];
NSString *key = [pairComponents.firstObject stringByRemovingPercentEncoding];
NSString *value = [pairComponents.lastObject stringByRemovingPercentEncoding];
if (key == nil || value == nil) {
continue;
}
id existValue = [parameters valueForKey:key];
if (existValue != nil) {
if ([existValue isKindOfClass:[NSArray class]]) {
NSMutableArray *items = [NSMutableArray arrayWithArray:existValue];
[items addObject:value];
[parameters setValue:items forKey:key];
} else {
[parameters setValue:@[existValue, value] forKey:key];
}
} else {
[parameters setValue:value forKey:key];
}
}
} else {
NSArray *pairComponents = [parametersString componentsSeparatedByString:@"="];
if (pairComponents.count == 1) {
return nil;
}
NSString *key = [pairComponents.firstObject stringByRemovingPercentEncoding];
NSString *value = [pairComponents.lastObject stringByRemovingPercentEncoding];
if (key == nil || value == nil) {
return nil;
}
[parameters setValue:value forKey:key];
}
return parameters;
}
31、提取字符串中的数字
+ (NSString *)getNumberFromDataStr:(NSString *)str{
NSCharacterSet *nonDigitCharacterSet = [[NSCharacterSet decimalDigitCharacterSet] invertedSet];
return[[str componentsSeparatedByCharactersInSet:nonDigitCharacterSet] componentsJoinedByString:@""];
}
32、添加抖动动画
+ (void)addImageRotationWithView:(UIView *)view Count:(float)count{
CAKeyframeAnimation *anima = [CAKeyframeAnimation animation];
anima.keyPath = @"transform.rotation";
anima.values = @[@(((-5) * M_PI / 180.0)),@(((5) * M_PI / 180.0)),@(((-5) * M_PI / 180.0))];
anima.repeatCount = count;
[view.layer addAnimation:anima forKey:@"doudong"];
}
33、添加缩放动画
+ (void)addImageScaleWithView:(UIView *)view repeatCount:(float)count{
CAKeyframeAnimation *anima = [CAKeyframeAnimation animation];
anima.keyPath = @"transform.scale";
anima.values = @[@(1.0),@(1.2),@(1.0),@(0.8),@(1.0)];
anima.repeatCount = count;
anima.duration = 1;
[view.layer addAnimation:anima forKey:@"suofang"];
}
34、添加阴影
+ (void)addShadowToView:(UIView *)theView withColor:(UIColor *)theColor shadowRadius:(CGFloat)radius{
// 阴影颜色
theView.layer.shadowColor = theColor.CGColor;
// 阴影偏移，默认(0, -3)
theView.layer.shadowOffset = CGSizeMake(0,0);
// 阴影透明度，默认0
theView.layer.shadowOpacity = 0.5;
// 阴影半径，默认3
theView.layer.shadowRadius = radius;
}
35、添加渐变色
+ (void)addGradientLayerWithUIColors:(NSArray*)colors View:(UIView*)view {
NSMutableArray *colorArray = [NSMutableArray array];
for (UIColor *color in colors) {
[colorArray addObject:(id)color.CGColor];
}
CAGradientLayer *gradient = [CAGradientLayer layer];
gradient.frame = view.bounds;
gradient.startPoint = CGPointMake(0, 0);
gradient.endPoint = CGPointMake(1, 0);
gradient.colors = colorArray;
for (CAGradientLayer *oldGLayer in view.layer.sublayers) {
[oldGLayer removeFromSuperlayer];
}
[view.layer addSublayer:gradient];
}
36、获取当前window、顶层控制器
+ (UIWindow *)getKeyWindow{
UIWindow* window = nil;
if (@available(iOS 13.0, *)) {
for (UIWindowScene* windowScene in [UIApplication sharedApplication].connectedScenes) {
if (windowScene.activationState == UISceneActivationStateForegroundActive) {
window = windowScene.windows.firstObject;
break;
}
}
}else{
window = [UIApplication sharedApplication].keyWindow;
}
return window;
}
+ (UIViewController *)topViewController {
UIViewController *resultVC = [self topViewControllerWithVC:[self getKeyWindow].rootViewController];
while (resultVC.presentedViewController) {
resultVC = [self topViewControllerWithVC:resultVC.presentedViewController];
}
return resultVC;
}
+ (UIViewController *)topViewControllerWithVC:(UIViewController *)vc {
if ([vc isKindOfClass:[UINavigationController class]]) {
return [self topViewControllerWithVC:[(UINavigationController *)vc topViewController]];
} else if ([vc isKindOfClass:[UITabBarController class]]) {
return [self topViewControllerWithVC:[(UITabBarController *)vc selectedViewController]];
} else {
return vc;
}
return nil;
}
37、减淡当前颜色
+ (UIColor *)shallowerWithColor:(UIColor *)color{
CGFloat R,G,B;
const CGFloat *components = CGColorGetComponents(color.CGColor);
R = components[0];
G = components[1];
B = components[2];
UIColor *newColor = [UIColor colorWithRed:R+0.1 green:G+0.1 blue:B+0.1 alpha:1.0];
return newColor;
}
38、文字转图片
//文字转化成图片
+ (UIImage *)imageFromText:(NSString *)content FontSize:(CGFloat)fontSize TextColor:(UIColor *)textColor BgColor:(UIColor *)bgColor{
UIFont *font = [UIFont systemFontOfSize:fontSize weight:UIFontWeightRegular];
CGRect stringRect = [content boundingRectWithSize:CGSizeMake(MAXFLOAT, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName:font} context:nil];
CGRect rect = CGRectMake(10, 5, stringRect.size.width + 20, stringRect.size.height + 10);
UIGraphicsBeginImageContextWithOptions(rect.size, NO, UIScreen.mainScreen.scale);
if(bgColor) {
//填充背景颜色
[bgColor set];
UIRectFill(CGRectMake(0, 0, rect.size.width, rect.size.height));
}
// 根据矩形画带圆角的曲线
[content drawInRect:rect withAttributes:@{NSFontAttributeName:font, NSForegroundColorAttributeName:textColor}];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
39、获取正则匹配结果
+ (NSArray *)matchString:(NSString *)string toRegexString:(NSString *)regexStr{
if (string.length>0) {
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:regexStr options:NSRegularExpressionAnchorsMatchLines error:nil];
NSArray * matches = [regex matchesInString:string options:0 range:NSMakeRange(0, [string length])];
//match: 所有匹配到的字符,根据() 包含级
NSMutableArray *array = [NSMutableArray array];
for (NSTextCheckingResult *match in matches) {
//以正则中的(),划分成不同的匹配部分
NSString *component = [string substringWithRange:[match rangeAtIndex:1]];
[array addObject:component];
}
return array;
} else {
return @[@""];
}
}
40、字符串转颜色
+ (UIColor *)colorWithDarkModelColor:(NSString *)color{
return [self colorWithDarkModelColor:color andOpacity:1.0f];
}
+ (UIColor *)colorWithDarkModelColor:(NSString *)color andOpacity:(CGFloat)opacity {
NSString *cString = [[color stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
if ([cString length] < 6) {
return [UIColor clearColor];
}
//判断前缀
if ([cString hasPrefix:@"0X"]) {
cString = [cString substringFromIndex:2];
}
if ([cString hasPrefix:@"0x"]) {
cString = [cString substringFromIndex:2];
}
if ([cString hasPrefix:@"#"]) {
cString = [cString substringFromIndex:1];
}
if ([cString length] != 6) {
return [UIColor clearColor];
}
//从六位数值中找到RGB对应的位数并转换
NSRange range;
range.location = 0;
range.length = 2;
//R G B
NSString *rString = [cString substringWithRange:range];
range.location = 2;
NSString *gString = [cString substringWithRange:range];
range.location = 4;
NSString *bString = [cString substringWithRange:range];
unsigned int r, g, b;
[[NSScanner scannerWithString:rString] scanHexInt:&r];
[[NSScanner scannerWithString:gString] scanHexInt:&g];
[[NSScanner scannerWithString:bString] scanHexInt:&b];
if (@available(iOS 13.0, *)) {
return [UIColor colorWithDynamicProvider:^UIColor * _Nonnull(UITraitCollection * _Nonnull traitCollection) {
if (traitCollection.userInterfaceStyle==UIUserInterfaceStyleDark) {
return [UIColor colorWithRed:((float) (255.0-r) / 255.0f) green:((float) (255.0-g) / 255.0f) blue:((float) (255.0-b) / 255.0f) alpha:opacity];
} else {
return [UIColor colorWithRed:((float) r / 255.0f) green:((float) g / 255.0f) blue:((float) b / 255.0f) alpha:opacity];
}
}];
} else {
// Fallback on earlier versions
return [UIColor colorWithRed:((float) r / 255.0f) green:((float) g / 255.0f) blue:((float) b / 255.0f) alpha:opacity];
};
}
41、颜色转图片
+ (UIImage *)sf_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();
return image;
}
42、转灰度图
- (UIImage *)sf_convertToGrayImage {
int width = self.size.width;
int height = self.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), self.CGImage);
CGImageRef contextRef = CGBitmapContextCreateImage(context);
UIImage* grayImage = [UIImage imageWithCGImage:contextRef];
CGContextRelease(context);
CGImageRelease(contextRef);
return grayImage;
}
43、图片翻转
/*
UIImageOrientationUp, // default orientation
UIImageOrientationDown, // 180 deg rotation
UIImageOrientationLeft, // 90 deg CCW
UIImageOrientationRight, // 90 deg CW
UIImageOrientationUpMirrored, // as above but image mirrored along other axis. horizontal flip
UIImageOrientationDownMirrored, // horizontal flip
UIImageOrientationLeftMirrored, // vertical flip
UIImageOrientationRightMirrored, // vertical flip
*/
- (UIImage *)sf_fixOrientation {
if (self.imageOrientation == UIImageOrientationUp) return self;
CGAffineTransform transform = CGAffineTransformIdentity;
switch (self.imageOrientation) {
case UIImageOrientationDown:
case UIImageOrientationDownMirrored:
transform = CGAffineTransformTranslate(transform, self.size.width, self.size.height);
transform = CGAffineTransformRotate(transform, M_PI);
break;
case UIImageOrientationLeft:
case UIImageOrientationLeftMirrored:
transform = CGAffineTransformTranslate(transform, self.size.width, 0);
transform = CGAffineTransformRotate(transform, M_PI_2);
break;
case UIImageOrientationRight:
case UIImageOrientationRightMirrored:
transform = CGAffineTransformTranslate(transform, 0, self.size.height);
transform = CGAffineTransformRotate(transform, -M_PI_2);
break;
case UIImageOrientationUp:
case UIImageOrientationUpMirrored:
break;
}
switch (self.imageOrientation) {
case UIImageOrientationUpMirrored:
case UIImageOrientationDownMirrored:
transform = CGAffineTransformTranslate(transform, self.size.width, 0);
transform = CGAffineTransformScale(transform, -1, 1);
break;
case UIImageOrientationLeftMirrored:
case UIImageOrientationRightMirrored:
transform = CGAffineTransformTranslate(transform, self.size.height, 0);
transform = CGAffineTransformScale(transform, -1, 1);
break;
case UIImageOrientationUp:
case UIImageOrientationDown:
case UIImageOrientationLeft:
case UIImageOrientationRight:
break;
}
CGContextRef ctx = CGBitmapContextCreate(NULL, self.size.width, self.size.height,
CGImageGetBitsPerComponent(self.CGImage), 0,
CGImageGetColorSpace(self.CGImage),
CGImageGetBitmapInfo(self.CGImage));
CGContextConcatCTM(ctx, transform);
switch (self.imageOrientation) {
case UIImageOrientationLeft:
case UIImageOrientationLeftMirrored:
case UIImageOrientationRight:
case UIImageOrientationRightMirrored:
CGContextDrawImage(ctx, CGRectMake(0,0,self.size.height,self.size.width), self.CGImage);
break;
default:
CGContextDrawImage(ctx, CGRectMake(0,0,self.size.width,self.size.height), self.CGImage);
break;
}
CGImageRef cgimg = CGBitmapContextCreateImage(ctx);
UIImage* img = [UIImage imageWithCGImage:cgimg];
CGContextRelease(ctx);
CGImageRelease(cgimg);
return img;
}
- (UIImage *)sf_rotate:(UIImageOrientation)orient {
CGRect bnds = CGRectZero;
UIImage* copy = nil;
CGContextRef ctxt = nil;
CGImageRef imag = self.CGImage;
CGRect rect = CGRectZero;
CGAffineTransform tran = CGAffineTransformIdentity;
rect.size.width = CGImageGetWidth(imag);
rect.size.height = CGImageGetHeight(imag);
bnds = rect;
switch (orient) {
case UIImageOrientationUp:
return self;
case UIImageOrientationUpMirrored:
tran = CGAffineTransformMakeTranslation(rect.size.width, 0.0);
tran = CGAffineTransformScale(tran, -1.0, 1.0);
break;
case UIImageOrientationDown:
tran = CGAffineTransformMakeTranslation(rect.size.width,
rect.size.height);
tran = CGAffineTransformRotate(tran, M_PI);
break;
case UIImageOrientationDownMirrored:
tran = CGAffineTransformMakeTranslation(0.0, rect.size.height);
tran = CGAffineTransformScale(tran, 1.0, -1.0);
break;
case UIImageOrientationLeft:
bnds = sf_swapWidthAndHeight(bnds);
tran = CGAffineTransformMakeTranslation(0.0, rect.size.width);
tran = CGAffineTransformRotate(tran, 3.0 * M_PI / 2.0);
break;
case UIImageOrientationLeftMirrored:
bnds = sf_swapWidthAndHeight(bnds);
tran = CGAffineTransformMakeTranslation(rect.size.height,
rect.size.width);
tran = CGAffineTransformScale(tran, -1.0, 1.0);
tran = CGAffineTransformRotate(tran, 3.0 * M_PI / 2.0);
break;
case UIImageOrientationRight:
bnds = sf_swapWidthAndHeight(bnds);
tran = CGAffineTransformMakeTranslation(rect.size.height, 0.0);
tran = CGAffineTransformRotate(tran, M_PI / 2.0);
break;
case UIImageOrientationRightMirrored:
bnds = sf_swapWidthAndHeight(bnds);
tran = CGAffineTransformMakeScale(-1.0, 1.0);
tran = CGAffineTransformRotate(tran, M_PI / 2.0);
break;
default:
return self;
}
UIGraphicsBeginImageContext(bnds.size);
ctxt = UIGraphicsGetCurrentContext();
switch (orient) {
case UIImageOrientationLeft:
case UIImageOrientationLeftMirrored:
case UIImageOrientationRight:
case UIImageOrientationRightMirrored:
CGContextScaleCTM(ctxt, -1.0, 1.0);
CGContextTranslateCTM(ctxt, -rect.size.height, 0.0);
break;
default:
CGContextScaleCTM(ctxt, 1.0, -1.0);
CGContextTranslateCTM(ctxt, 0.0, -rect.size.height);
break;
}
CGContextConcatCTM(ctxt, tran);
CGContextDrawImage(UIGraphicsGetCurrentContext(), rect, imag);
copy = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return copy;
}
44、将图片旋转degrees角度
- (UIImage *)sf_imageRotatedByRadians:(CGFloat)radians {
UIView* rotatedViewBox = [[UIView alloc] initWithFrame:CGRectMake(0,0,self.size.width, self.size.height)];
CGAffineTransform t = CGAffineTransformMakeRotation(radians);
rotatedViewBox.transform = t;
CGSize rotatedSize = rotatedViewBox.frame.size;
UIGraphicsBeginImageContext(rotatedSize);
CGContextRef bitmap = UIGraphicsGetCurrentContext();
CGContextTranslateCTM(bitmap, rotatedSize.width/2, rotatedSize.height/2);
CGContextRotateCTM(bitmap, radians);
CGContextScaleCTM(bitmap, 1.0, -1.0);
CGContextDrawImage(bitmap, CGRectMake(-self.size.width / 2, -self.size.height / 2, self.size.width, self.size.height), [self CGImage]);
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return newImage;
}
45、截取当前image对象rect区域内的图像
- (UIImage *)sf_subImageWithRect:(CGRect)rect {
CGImageRef newImageRef = CGImageCreateWithImageInRect(self.CGImage, rect);
UIImage* newImage = [UIImage imageWithCGImage:newImageRef];
CGImageRelease(newImageRef);
return newImage;
}
46、压缩图片至指定尺寸
- (UIImage *)sf_rescaleImageToSize:(CGSize)size {
CGRect rect = (CGRect){CGPointZero, size};
UIGraphicsBeginImageContext(rect.size);
[self drawInRect:rect];
UIImage* resImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return resImage;
}
47、压缩图片至指定像素
- (UIImage *)sf_rescaleImageToPX:(CGFloat )toPX {
CGSize size = self.size;
if(size.width <= toPX && size.height <= toPX) {
return self;
}
CGFloat scale = size.width / size.height;
if(size.width > size.height) {
size.width = toPX;
size.height = size.width / scale;
} else {
size.height = toPX;
size.width = size.height * scale;
}
return [self sf_rescaleImageToSize:size];
}
48、UIView转化为UIImage
+ (UIImage *)sf_imageFromView:(UIView *)view {
CGFloat scale = [UIScreen mainScreen].scale;
UIGraphicsBeginImageContextWithOptions(view.frame.size, NO, scale);
[view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage* image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
49、数字本地化显示
+ (NSString *)chinaStringWithInteger:(NSInteger)number{
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
formatter.numberStyle = NSNumberFormatterSpellOutStyle;
NSString *string = [formatter stringFromNumber:[NSNumber numberWithInteger:number]];
return string;
}
50、获取指定路径下的所有文件以及文件夹
// APP 路径
NSString *path = [[NSBundle mainBundle] bundlePath];
// 沙盒路径
NSString *path = NSHomeDirectory();
-(void)localFileWithPath:(NSString *)path {
NSDirectoryEnumerator *dirEnum = [[NSFileManager defaultManager] enumeratorAtPath:path];
NSString *fileName;
while (fileName = [dirEnum nextObject]) {
NSLog(@"文件路径:%@", fileName);
}
}
