IOS 常用方法封装
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#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
@interface PublicTools : NSObject
/**
* 获取磁盘总空间
*
* @return 磁盘大小
*/
+(CGFloat)diskOfAllSizeMBytes;
/**
* 获取磁盘可用空间大小
*
* @return 可用空间大小
*/
+(CGFloat)diskOfFreeSizeMBytes;
/**
* 获取指定路径下某个文件的大小
*
* @param filePath 文件路径
*
* @return 文件大小
*/
+(longlong)fileSizeAtPath:(NSString *)filePath;
/**
* 获取文件夹下所有文件的大小
*
* @param folderPath 文件夹路径
*
* @return 所有文件大小
*/
+ (longlong)folderSizeAtPath:(NSString *)folderPath;
/**
* 获取字符串(或汉字)首字母
*
* @param string 待截取的字符串
*
* @return 首字母
*/
+ (NSString *)firstCharacterWithString:(NSString *)string;
/**
* 将字符串数组按照元素首字母顺序进行排序分组
*
* @param array 待排序数组
*
* @return 字典
*/
+ (NSDictionary *)dictionaryOrderByCharacterWithOriginalArray:(NSArray *)array;
/**
* 获取当前时间
*
* @param format @"yyyy-MM-dd HH:mm:ss"、@"yyyy年MM月dd日 HH时mm分ss秒"
*
* @return 当前时间
*/
+ (NSString *)currentDateWithFormat:(NSString *)format;
/**
* 计算上次日期距离现在多久
*
* @param lastTime 上次日期(需要和格式对应)
* @param format1 上次日期格式
* @param currentTime 最近日期(需要和格式对应)
* @param format2 最近日期格式
*
* @return xx分钟前、xx小时前、xx天前
*/
+ (NSString *)timeIntervalFromLastTime:(NSString *)lastTime
lastTimeFormat:(NSString *)format1
ToCurrentTime:(NSString *)currentTime
currentTimeFormat:(NSString *)format2;
/**
* 判断手机号码格式是否正确
*
* @param mobile 手机号码
*
* @return 结果
*/
+ (BOOL)valiMobile:(NSString *)mobile;
/**
* 判断邮箱格式
*
* @param email 邮箱
*
* @return 结果
*/
+ (BOOL)isAvailableEmail:(NSString *)email ;
/**
* 将十六进制颜色转换为 UIColor对象
*
* @param color @"#FFFFFF" @"0x223355"
*
* @return [UIColor color]
*/
+ (UIColor *)colorWithHexString:(NSString *)color;
/**
* 对图片进行滤镜处理
* 怀旧 --> CIPhotoEffectInstant 单色 --> CIPhotoEffectMono
* 黑白 --> CIPhotoEffectNoir 褪色 --> CIPhotoEffectFade
* 色调 --> CIPhotoEffectTonal 冲印 --> CIPhotoEffectProcess
* 岁月 --> CIPhotoEffectTransfer 铬黄 --> CIPhotoEffectChrome
* CILinearToSRGBToneCurve, CISRGBToneCurveToLinear, CIGaussianBlur, CIBoxBlur, CIDiscBlur, CISepiaTone, CIDepthOfField
* @param image 图片
* @param name 处理类型
*
* @return 图片
*/
+ (UIImage *)filterWithOriginalImage:(UIImage *)image filterName:(NSString *)name;
/**
* 对图片进行模糊处理
* CIGaussianBlur ---> 高斯模糊
* CIBoxBlur ---> 均值模糊(Available in iOS 9.0 and later)
* CIDiscBlur ---> 环形卷积模糊(Available in iOS 9.0 and later)
* CIMedianFilter ---> 中值模糊,用于消除图像噪点, 无需设置radius(Available in iOS 9.0 and later)
* CIMotionBlur ---> 运动模糊,用于模拟相机移动拍摄时的扫尾效果(Available in iOS 9.0 and later)
*
* @param image 图片
* @param name 模糊类型
* @param radius 半径
*
* @return 图片
*/
+ (UIImage *)blurWithOriginalImage:(UIImage *)image blurName:(NSString *)name radius:(NSInteger)radius;
/**
* 调整图片饱和度,亮度, 对比度
*
* @param image 目标图片
* @param saturation 饱和度
* @param brightness 亮度: -1.0 ~ 1.0
* @param contrast 对比度
*
*/
+ (UIImage *)colorControlsWithOriginalImage:(UIImage *)image
saturation:(CGFloat)saturation
brightness:(CGFloat)brightness
contrast:(CGFloat)contrast;
/**
* 创建一张实时模糊效果 View (毛玻璃效果)
*
* @param frame 大小
*
* @return View
*/
+ (UIVisualEffectView *)effectViewWithFrame:(CGRect)frame;
/**
* 全屏截图
*
* @return 图片
*/
+ (UIImage *)shotScreen;
/**
* 压缩图片到指定尺寸大小
*
* @param image 待压缩图片
* @param size 指定尺寸大小
*
* @return 返回图片
*/
+ (UIImage *)compressOriginalImage:(UIImage *)image toSize:(CGSize)size;
/**
* 压缩图片到指定文件大小
*
* @param image 待压缩图片
* @param size 指定文件大小
*
* @return 图片
*/
+ (NSData *)compressOriginalImage:(UIImage *)image toMaxDataSizeKBytes:(CGFloat)size;
/**
* 判断字符串中是否含有空格
*
* @param string 字符串
*
* @return YES or NO
*/
+(BOOL)isHaveSpaceInString:(NSString *)string;
/**
* 判断字符串中是否含有某个字符串
*
* @param string1 @"Hello world"
* @param string2 @"world"
*
* @return YES or NO
*/
+ (BOOL)isHaveString:(NSString *)string1 InString:(NSString *)string2;
/**
* 判断字符串中是否含有中文
*
* @param string 待比较字符串
*
* @return YES or NO
*/
+ (BOOL)isHaveChineseInString:(NSString *)string;
/**
* 判断字符串是否全部为数字
*
* @param string 待比较字符串
*
* @return YES or NO
*/
+ (BOOL)isAllNum:(NSString *)string;
/**
* 自定义弹出框
*
* @param str 提示文本
* @param view 在哪个视图显示（self.view）
*/
+(void)alert:(NSString *)str view:(UIView*)view;
/**
* 动态设置label的宽高
*
* @param font 字号
* @param str 文本
*
* @return 高度
*/
+(CGSize)font:(UIFont *)font str:(NSString *)str;
/**
* 获取当前的viewcontroller
*/
+ (UIViewController *)getCurrentVC;
/**
* 将json的字符串转换成字典
*
* @param jsonString 字符串
*
* @return 字典，数组。。。。
*/
+ (id)dictionaryWithJsonString:(NSString *)jsonString ;
@end
#import "PublicTools.h"
@implementation PublicTools
//磁盘总空间
+ (CGFloat)diskOfAllSizeMBytes{
CGFloat size =0.0;
NSError *error;
NSDictionary *dic = [[NSFileManagerdefaultManager] attributesOfFileSystemForPath:NSHomeDirectory()error:&error];
if (error) {
#ifdef DEBUG
NSLog(@"error: %@", error.localizedDescription);
#endif
}else{
NSNumber *number = [dicobjectForKey:NSFileSystemSize];
size = [number floatValue]/1024/1024;
}
return size;
}
//磁盘可用空间
+ (CGFloat)diskOfFreeSizeMBytes{
CGFloat size =0.0;
NSError *error;
NSDictionary *dic = [[NSFileManagerdefaultManager] attributesOfFileSystemForPath:NSHomeDirectory()error:&error];
if (error) {
#ifdef DEBUG
NSLog(@"error: %@", error.localizedDescription);
#endif
}else{
NSNumber *number = [dic objectForKey:NSFileSystemFreeSize];
size = [number floatValue]/1024/1024;
}
return size;
}
//获取文件大小
+ (longlong)fileSizeAtPath:(NSString *)filePath{
NSFileManager *fileManager = [NSFileManager defaultManager];
if (![fileManager fileExistsAtPath:filePath])return 0;
return [[fileManager attributesOfItemAtPath:filePath error:nil] fileSize];
}
//获取文件夹下所有文件的大小
+ (longlong)folderSizeAtPath:(NSString *)folderPath{
NSFileManager *fileManager = [NSFileManager defaultManager];
if (![fileManager fileExistsAtPath:folderPath])return 0;
NSEnumerator *filesEnumerator = [[fileManager subpathsAtPath:folderPath] objectEnumerator];
NSString *fileName;
longlong folerSize = 0;
while ((fileName = [filesEnumerator nextObject]) !=nil) {
NSString *filePath = [folderPath stringByAppendingPathComponent:fileName];
folerSize += [self fileSizeAtPath:filePath];
}
return folerSize;
}
//获取字符串(或汉字)首字母
+ (NSString *)firstCharacterWithString:(NSString *)string{
NSMutableString *str = [NSMutableString stringWithString:string];
CFStringTransform((CFMutableStringRef)str,NULL, kCFStringTransformMandarinLatin,NO);
CFStringTransform((CFMutableStringRef)str,NULL, kCFStringTransformStripDiacritics,NO);
NSString *pingyin = [str capitalizedString];
return [pingyin substringToIndex:1];
}
//将字符串数组按照元素首字母顺序进行排序分组
+ (NSDictionary *)dictionaryOrderByCharacterWithOriginalArray:(NSArray *)array{
if (array.count ==0) {
returnnil;
}
for (id objin array) {
if (![obj isKindOfClass:[NSString class]]) {
returnnil;
}
}
UILocalizedIndexedCollation *indexedCollation = [UILocalizedIndexedCollation currentCollation];
NSMutableArray *objects = [NSMutableArray arrayWithCapacity:indexedCollation.sectionTitles.count];
//创建27个分组数组
for (int i =0; i < indexedCollation.sectionTitles.count; i++) {
NSMutableArray *obj = [NSMutableArray array];
[objects addObject:obj];
}
NSMutableArray *keys = [NSMutableArray arrayWithCapacity:objects.count];
//按字母顺序进行分组
NSInteger lastIndex = -1;
for (int i =0; i < array.count; i++) {
NSInteger index = [indexedCollation sectionForObject:array[i] collationStringSelector:@selector(uppercaseString)];
[[objects objectAtIndex:index] addObject:array[i]];
lastIndex = index;
}
//去掉空数组
for (int i =0; i < objects.count; i++) {
NSMutableArray *obj = objects[i];
if (obj.count ==0) {
[objects removeObject:obj];
}
}
//获取索引字母
for (NSMutableArray *objin objects) {
NSString *str = obj[0];
NSString *key = [self firstCharacterWithString:str];
[keys addObject:key];
}
NSMutableDictionary *dic = [NSMutableDictionary dictionary];
[dic setObject:objects forKey:keys];
return dic;
}
//获取当前时间
//format: @"yyyy-MM-dd HH:mm:ss"、@"yyyy年MM月dd日 HH时mm分ss秒"
+ (NSString *)currentDateWithFormat:(NSString *)format{
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:format];
return [dateFormatter stringFromDate:[NSDate date]];
}
/**
* 计算上次日期距离现在多久
*
* @param lastTime 上次日期(需要和格式对应)
* @param format1 上次日期格式
* @param currentTime 最近日期(需要和格式对应)
* @param format2 最近日期格式
*
* @return xx分钟前、xx小时前、xx天前
*/
+ (NSString *)timeIntervalFromLastTime:(NSString *)lastTime
lastTimeFormat:(NSString *)format1
ToCurrentTime:(NSString *)currentTime
currentTimeFormat:(NSString *)format2{
//上次时间
NSDateFormatter *dateFormatter1 = [[NSDateFormatter alloc]init];
dateFormatter1.dateFormat = format1;
NSDate *lastDate = [dateFormatter1 dateFromString:lastTime];
//当前时间
NSDateFormatter *dateFormatter2 = [[NSDateFormatter alloc]init];
dateFormatter2.dateFormat = format2;
NSDate *currentDate = [dateFormatter2 dateFromString:currentTime];
return [PublicTools timeIntervalFromLastTime:lastDate ToCurrentTime:currentDate];
}
+ (NSString *)timeIntervalFromLastTime:(NSDate *)lastTime ToCurrentTime:(NSDate *)currentTime{
NSTimeZone *timeZone = [NSTimeZone systemTimeZone];
//上次时间
NSDate *lastDate = [lastTime dateByAddingTimeInterval:[timeZone secondsFromGMTForDate:lastTime]];
//当前时间
NSDate *currentDate = [currentTime dateByAddingTimeInterval:[timeZone secondsFromGMTForDate:currentTime]];
//时间间隔
NSInteger intevalTime = [currentDate timeIntervalSinceReferenceDate] - [lastDate timeIntervalSinceReferenceDate];
//秒、分、小时、天、月、年
NSInteger minutes = intevalTime / 60;
NSInteger hours = intevalTime / 60 /60;
NSInteger day = intevalTime / 60 /60 / 24;
NSInteger month = intevalTime / 60 /60 / 24 /30;
NSInteger yers = intevalTime / 60 /60 / 24 /365;
if (minutes <=10) {
return @"刚刚";
}elseif (minutes < 60){
return [NSString stringWithFormat:@"%ld分钟前",(long)minutes];
}elseif (hours < 24){
return [NSString stringWithFormat:@"%ld小时前",(long)hours];
}elseif (day < 30){
return [NSString stringWithFormat:@"%ld天前",(long)day];
}elseif (month < 12){
NSDateFormatter * df =[[NSDateFormatter alloc]init];
df.dateFormat = @"M月d日";
NSString * time = [df stringFromDate:lastDate];
return time;
}elseif (yers >= 1){
NSDateFormatter * df =[[NSDateFormatter alloc]init];
df.dateFormat = @"yyyy年M月d日";
NSString * time = [df stringFromDate:lastDate];
return time;
}
return@"";
}
//判断手机号码格式是否正确
+ (BOOL)valiMobile:(NSString *)mobile{
mobile = [mobile stringByReplacingOccurrencesOfString:@" " 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];
BOOL isMatch1 = [pred1 evaluateWithObject:mobile];
NSPredicate *pred2 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CU_NUM];
BOOL isMatch2 = [pred2 evaluateWithObject:mobile];
NSPredicate *pred3 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CT_NUM];
BOOL isMatch3 = [pred3 evaluateWithObject:mobile];
if (isMatch1 || isMatch2 || isMatch3) {
returnYES;
}else{
returnNO;
}
}
}
//利用正则表达式验证
+ (BOOL)isAvailableEmail:(NSString *)email {
NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
return [emailTest evaluateWithObject:email];
}
//将十六进制颜色转换为 UIColor对象
+ (UIColor *)colorWithHexString:(NSString *)color{
NSString *cString = [[color stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
// String should be 6 or 8 characters
if ([cString length] <6) {
return [UIColor clearColor];
}
// strip "0X" or "#" if it appears
if ([cString hasPrefix:@"0X"])
cString = [cString substringFromIndex:2];
if ([cString hasPrefix:@"#"])
cString = [cString substringFromIndex:1];
if ([cString length] !=6)
return [UIColor clearColor];
// Separate into r, g, b substrings
NSRange range;
range.location = 0;
range.length = 2;
//r
NSString *rString = [cString substringWithRange:range];
//g
range.location = 2;
NSString *gString = [cString substringWithRange:range];
//b
range.location = 4;
NSString *bString = [cString substringWithRange:range];
// Scan values
unsignedint r, g, b;
[[NSScanner scannerWithString:rString] scanHexInt:&r];
[[NSScanner scannerWithString:gString] scanHexInt:&g];
[[NSScanner scannerWithString:bString] scanHexInt:&b];
return [UIColor colorWithRed:((float) r /255.0f) green:((float) g /255.0f) blue:((float) b /255.0f) alpha:1.0f];
}
#pragma mark - 对图片进行滤镜处理
// 怀旧 --> CIPhotoEffectInstant 单色 --> CIPhotoEffectMono
// 黑白 --> CIPhotoEffectNoir 褪色 --> CIPhotoEffectFade
// 色调 --> CIPhotoEffectTonal 冲印 --> CIPhotoEffectProcess
// 岁月 --> CIPhotoEffectTransfer 铬黄 --> CIPhotoEffectChrome
// CILinearToSRGBToneCurve, CISRGBToneCurveToLinear, CIGaussianBlur, CIBoxBlur, CIDiscBlur, CISepiaTone, CIDepthOfField
+ (UIImage *)filterWithOriginalImage:(UIImage *)image filterName:(NSString *)name{
CIContext *context = [CIContext contextWithOptions:nil];
CIImage *inputImage = [[CIImage alloc] initWithImage:image];
CIFilter *filter = [CIFilter filterWithName:name];
[filter setValue:inputImage forKey:kCIInputImageKey];
CIImage *result = [filter valueForKey:kCIOutputImageKey];
CGImageRef cgImage = [context createCGImage:result fromRect:[result extent]];
UIImage *resultImage = [UIImage imageWithCGImage:cgImage];
CGImageRelease(cgImage);
return resultImage;
}
#pragma mark - 对图片进行模糊处理
// CIGaussianBlur ---> 高斯模糊
// CIBoxBlur ---> 均值模糊(Available in iOS 9.0 and later)
// CIDiscBlur ---> 环形卷积模糊(Available in iOS 9.0 and later)
// CIMedianFilter ---> 中值模糊,用于消除图像噪点, 无需设置radius(Available in iOS 9.0 and later)
// CIMotionBlur ---> 运动模糊,用于模拟相机移动拍摄时的扫尾效果(Available in iOS 9.0 and later)
+ (UIImage *)blurWithOriginalImage:(UIImage *)image blurName:(NSString *)name radius:(NSInteger)radius{
CIContext *context = [CIContext contextWithOptions:nil];
CIImage *inputImage = [[CIImage alloc] initWithImage:image];
CIFilter *filter;
if (name.length !=0) {
filter = [CIFilter filterWithName:name];
[filter setValue:inputImage forKey:kCIInputImageKey];
if (![name isEqualToString:@"CIMedianFilter"]) {
[filter setValue:@(radius) forKey:@"inputRadius"];
}
CIImage *result = [filter valueForKey:kCIOutputImageKey];
CGImageRef cgImage = [context createCGImage:result fromRect:[result extent]];
UIImage *resultImage = [UIImage imageWithCGImage:cgImage];
CGImageRelease(cgImage);
return resultImage;
}else{
returnnil;
}
}
/**
* 调整图片饱和度,亮度, 对比度
*
* @param image 目标图片
* @param saturation 饱和度
* @param brightness 亮度: -1.0 ~ 1.0
* @param contrast 对比度
*
*/
+ (UIImage *)colorControlsWithOriginalImage:(UIImage *)image
saturation:(CGFloat)saturation
brightness:(CGFloat)brightness
contrast:(CGFloat)contrast{
CIContext *context = [CIContext contextWithOptions:nil];
CIImage *inputImage = [[CIImage alloc] initWithImage:image];
CIFilter *filter = [CIFilter filterWithName:@"CIColorControls"];
[filter setValue:inputImage forKey:kCIInputImageKey];
[filter setValue:@(saturation) forKey:@"inputSaturation"];
[filter setValue:@(brightness) forKey:@"inputBrightness"];// 0.0 ~ 1.0
[filter setValue:@(contrast) forKey:@"inputContrast"];
CIImage *result = [filter valueForKey:kCIOutputImageKey];
CGImageRef cgImage = [context createCGImage:result fromRect:[result extent]];
UIImage *resultImage = [UIImage imageWithCGImage:cgImage];
CGImageRelease(cgImage);
return resultImage;
}
//Avilable in iOS 8.0 and later
+ (UIVisualEffectView *)effectViewWithFrame:(CGRect)frame{
UIBlurEffect *effect = [UIBlurEffect effectWithStyle:UIBlurEffectStyleLight];
UIVisualEffectView *effectView = [[UIVisualEffectView alloc] initWithEffect:effect];
effectView.frame = frame;
return effectView;
}
//全屏截图
+ (UIImage *)shotScreen{
UIWindow *window = [UIApplication sharedApplication].keyWindow;
UIGraphicsBeginImageContext(window.bounds.size);
[window.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
//压缩图片到指定尺寸大小
+ (UIImage *)compressOriginalImage:(UIImage *)image toSize:(CGSize)size{
UIImage *resultImage = image;
UIGraphicsBeginImageContext(size);
[resultImage drawInRect:CGRectMake(0,0, size.width, size.height)];
UIGraphicsEndImageContext();
return resultImage;
}
//压缩图片到指定文件大小
+ (NSData *)compressOriginalImage:(UIImage *)image toMaxDataSizeKBytes:(CGFloat)size{
NSData *data = UIImageJPEGRepresentation(image,1.0);
CGFloat dataKBytes = data.length/1000.0;
CGFloat maxQuality = 0.9f;
CGFloat lastData = dataKBytes;
while (dataKBytes > size && maxQuality >0.01f) {
maxQuality = maxQuality - 0.01f;
data = UIImageJPEGRepresentation(image, maxQuality);
dataKBytes = data.length/1000.0;
if (lastData == dataKBytes) {
break;
}else{
lastData = dataKBytes;
}
}
return data;
}
//判断是否有空格
+ (BOOL)isHaveSpaceInString:(NSString *)string{
NSRange _range = [string rangeOfString:@" "];
if (_range.location != NSNotFound) {
returnYES;
}else {
returnNO;
}
}
//判断stirng2是否在 string1 中
+ (BOOL)isHaveString:(NSString *)string1 InString:(NSString *)string2{
NSRange _range = [string2 rangeOfString:string1];
if (_range.location != NSNotFound) {
returnYES;
}else {
returnNO;
}
}
//判断是否有中文
+ (BOOL)isHaveChineseInString:(NSString *)string{
for(NSInteger i =0; i < [string length]; i++){
int a = [string characterAtIndex:i];
if (a >0x4e00 && a < 0x9fff) {
returnYES;
}
}
returnNO;
}
//判断字符串是否全部为数字
+ (BOOL)isAllNum:(NSString *)string{
unichar c;
for (int i=0; i<string.length; i++) {
c=[string characterAtIndex:i];
if (!isdigit(c)) {
returnNO;
}
}
returnYES;
}
//自定义弹出框
+(void)alert:(NSString *)str view:(UIView*)view{
float width=[self font:[UIFont systemFontOfSize:14] str:str].width;
UILabel *alertLabel=[[UILabel alloc]init];
alertLabel.center=CGPointMake(view.center.x,view.center.y+20);
alertLabel.bounds=CGRectMake(0,0,width+20,40);
alertLabel.backgroundColor=[UIColor blackColor];
alertLabel.textAlignment=NSTextAlignmentCenter;
alertLabel.font=[UIFont systemFontOfSize:14];
alertLabel.text=str;
alertLabel.textColor=[UIColor whiteColor];
alertLabel.layer.cornerRadius=5;
alertLabel.layer.masksToBounds=YES;
[view addSubview:alertLabel];
alertLabel.alpha=1;
[UIView beginAnimations:nil context:nil];
//设定动画持续时间
[UIView setAnimationDuration:3];
//动画的内容
alertLabel.alpha=0;
//动画结束
[UIView commitAnimations];
}
//动态设置label的宽高
+(CGSize)font:(UIFont *)font str:(NSString *)str{
CGSize size =CGSizeMake(300,60);
// label可设置的最大高度和宽度
//CGSize size = CGSizeMake(300.f, MAXFLOAT);
// 获取当前文本的属性
NSDictionary * tdic = [NSDictionary dictionaryWithObjectsAndKeys:font,NSFontAttributeName,nil];
//ios7方法，获取文本需要的size，限制宽度
CGSize actualsize =[str boundingRectWithSize:size options:NSStringDrawingUsesLineFragmentOrigin attributes:tdic context:nil].size;
return actualsize;
}
//获取当前的viewcontroller
+ (UIViewController *)getCurrentVC
{
UIViewController *result = nil;
UIWindow * window = [[UIApplication sharedApplication] keyWindow];
if (window.windowLevel != UIWindowLevelNormal)
{
NSArray *windows = [[UIApplication sharedApplication] windows];
for(UIWindow * tmpWinin windows)
{
if (tmpWin.windowLevel == UIWindowLevelNormal)
{
window = tmpWin;
break;
}
}
}
UIView *frontView = [[window subviews] objectAtIndex:0];
id nextResponder = [frontView nextResponder];
if ([nextResponder isKindOfClass:[UIViewController class]])
result = nextResponder;
else
result = window.rootViewController;
return result;
}
//将json的字符串转换成字典
+ (id)dictionaryWithJsonString:(NSString *)jsonString {
if (jsonString ==nil) {
NSLog(@"解析失败");
returnnil;
}
NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSError *err;
id dic = [NSJSONSerialization JSONObjectWithData:jsonData
options:NSJSONReadingMutableContainers
error:&err];
if(err) {
NSLog(@"json解析失败：%@",err);
returnnil;
}
return dic;
}
@end
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