平时记录的一些零碎的东西～ ～ 欢迎一起分享
MJExtesion 当model有数组时，数组内你又可以在复制一次model:例如：
.h
#import <Foundation/Foundation.h>
@interface LGOrderDetailObj : NSObject
//此数组中仍可以组成一个model
@property (nonatomic, strong) NSMutableArray *extend_order_goods;
@end
@interface SpecialGoodsModel : NSObject
@property (nonatomic, copy) NSString *goods_name;
@property (nonatomic, copy) NSString *goods_image;
// 商品规格
@property (nonatomic, strong) NSArray *goods_specification;
@end
.m
#import "LGOrderDetailObj.h"
@implementation LGOrderDetailObj
// 再次转换model
+(NSDictionary *)objectClassInArray {
return @{@"extend_order_goods":@"SpecialGoodsModel"};
}
@end
@implementation SpecialGoodsModel
@end
for in与for
for in快速遍历的时候，如果是可变数组字典之类的，不能对其进行增删改操作，否则会抛出异常
xcode8多个模拟器问题
首先退出Xcode并且关闭模拟器：
然后在终端(Terminal)输入如下2行命令:
**sudo killall -9 com.apple.CoreSimulator.CoreSimulatorService**
**rm -rf ~/Library/Developer/CoreSimulator/Devices**
JSONView
1、早GitHub中下载
2、在googol中打开这个链接 chrome://extensions/
3、选中开发者模式
4、加载正在开发的扩展程序 选中解压后的文件（WebContent） 添加即可
二维码生成，高清二维码, 收藏中有详细讲解
/**
* 生成二维码
*/
- (UIImage *)imageFromQrWith:(NSString *)string withSize:(CGFloat)size{
CIFilter *filter = [CIFilter filterWithName:@"CIQRCodeGenerator"];
[filter setDefaults];
NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
[filter setValue:data forKey:@"inputMessage"];
CIImage *outputImage = [filter outputImage];
return [self createNonInterpolatedUIImageFormCIImage:outputImage withSize:size];
}
// 二维码高清处理，CIImage –> CGImageRef –> UIImage
- (UIImage *)createNonInterpolatedUIImageFormCIImage:(CIImage *)image withSize:(CGFloat) size {
CGRect extent = CGRectIntegral(image.extent);
//设置比例
CGFloat scale = MIN(size/CGRectGetWidth(extent), size/CGRectGetHeight(extent));
// 创建bitmap（位图）;
size_t width = CGRectGetWidth(extent) * scale;
size_t height = CGRectGetHeight(extent) * scale;
CGColorSpaceRef cs = CGColorSpaceCreateDeviceGray();
CGContextRef bitmapRef = CGBitmapContextCreate(nil, width, height, 8, 0, cs, (CGBitmapInfo)kCGImageAlphaNone);
CIContext *context = [CIContext contextWithOptions:nil];
CGImageRef bitmapImage = [context createCGImage:image fromRect:extent];
CGContextSetInterpolationQuality(bitmapRef, kCGInterpolationNone);
CGContextScaleCTM(bitmapRef, scale, scale);
CGContextDrawImage(bitmapRef, extent, bitmapImage);
// 保存bitmap到图片
CGImageRef scaledImage = CGBitmapContextCreateImage(bitmapRef);
CGContextRelease(bitmapRef);
CGImageRelease(bitmapImage);
return [UIImage imageWithCGImage:scaledImage];
}
中文参数转码
- (NSString *)encodeToPercentEscapeString: (NSString *) input
{
// Encode all the reserved characters, per RFC 3986
NSString *outputStr = (NSString *)
CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,
(CFStringRef)input,
NULL,
(CFStringRef)@"!*'();:@&=+$,/?%#[]",
kCFStringEncodingUTF8));
return outputStr;
}
将汉字转化为拼音字符串获取大写首字母
- (NSString *)firstCharactor:(NSString *)aString {
// 转成可变数组
NSMutableString *str = [NSMutableString stringWithString:aString];
// 先转位带声调的拼音
CFStringTransform((CFMutableStringRef) str, NULL, kCFStringTransformMandarinLatin, NO);
// 再转换为不带声调的拼音
CFStringTransform((CFMutableStringRef) str, NULL, kCFStringTransformStripDiacritics, NO);
// 转化为大写字母
NSString *pinYin = [str capitalizedString];
// 获取并返回首字母
return [pinYin substringFromIndex:1];}c
cell自适应高度，计算label的高低
+ (CGSize)sizeOfString:(NSString *)string withFont:(UIFont *)font width:(CGFloat)width {
if ([NSNull null] == (id) string)
return CGSizeZero;
CGRect aframe = [string boundingRectWithSize:CGSizeMake(width, 0)
options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading
attributes:@{
NSFontAttributeName : font
} context:nil];
return aframe.size;
}
<Masony使用时要注意先添加到superView上>
1、Masony使用时要注意先添加到superView上
2、Masony中得block注意循环引用
手机号验证
- (BOOL)isMobileNumber:(NSString *)mobileNum {
// 电信号段:133/153/180/181/189/177
// 联通号段:130/131/132/155/156/185/186/145/176
// 移动号段:134/135/136/137/138/139/150/151/152/157/158/159/182/183/184/187/188/147/178
// 虚拟运营商:170
NSString *MOBILE = @"^1(3[0-9]|4[57]|5[0-35-9]|8[0-9]|7[06-8])\\d{8}$";
NSPredicate *regextestmobile = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", MOBILE];
return [regextestmobile evaluateWithObject:mobileNum];
}
银行卡号验证
/*银行卡号判断*/
+ (BOOL)checkCardNo:(NSString *)cardNo{
if (cardNo.length <= 0) {
return NO;
}
int oddsum = 0; //奇数求和
int evensum = 0; //偶数求和
int allsum = 0;
int cardNoLength = (int)[cardNo length];
int lastNum = [[cardNo substringFromIndex:cardNoLength-1] intValue];
cardNo = [cardNo substringToIndex:cardNoLength - 1];
for (int i = cardNoLength -1 ; i>=1;i--) {
NSString *tmpString = [cardNo substringWithRange:NSMakeRange(i-1, 1)];
int tmpVal = [tmpString intValue];
if (cardNoLength % 2 ==1 ) {
if((i % 2) == 0){
tmpVal *= 2;
if(tmpVal>=10)
tmpVal -= 9;
evensum += tmpVal;
}else{
oddsum += tmpVal;
}
}else{
if((i % 2) == 1){
tmpVal *= 2;
if(tmpVal>=10)
tmpVal -= 9;
evensum += tmpVal;
}else{
oddsum += tmpVal;
}
}
}
allsum = oddsum + evensum;
allsum += lastNum;
if((allsum % 10) == 0)
return YES;
else
return NO;
}
拨打手机
NSURL*url = [NSURL URLWithString:[NSString stringWithFormat:@"%@%@",@"telprompt://", number]];
[[UIApplication sharedApplication]openURL:url];
查看隐藏文件
ls -la
图片截取
CGImageRef imageRef = CGImageCreateWithImageInRect([self.originalImage CGImage], Rect);
UIImage *smallImage = [UIImage imageWithCGImage:imageRef];
CGImageRelease(imageRef);
模态出一个可以半透明的controller
将此控制器的背景色清空 clearcolor， 然后再上面加载一个半透明的view即可
SharePersonCardViewController *sharePersonCardController = [[SharePersonCardViewController alloc] init];
sharePersonCardController.modalPresentationStyle = UIModalPresentationOverCurrentContext;
sharePersonCardController.modalPresentationStyle = UIModalPresentationOverFullScreen;
[self presentViewController:sharePersonCardController animated:NO completion:nil];
MD5加密
- (NSString*)md5
{
const char *original_str = [self UTF8String];
unsigned char result[CC_MD5_DIGEST_LENGTH];
CC_MD5(original_str, @(strlen(original_str)).unsignedIntValue, result);
NSMutableString *hash = [NSMutableString string];
for (int i = 0; i < 16; i++)
[hash appendFormat:@"%02X", result[i]];
return [hash lowercaseString];
}
pch文件绝对路径
$(SRCROOT)/+工程名字+PrefixHeader.pch(这个文件名)
引入的第三方文件删除后，残留有警告解决方案：
选中工程—》build Settings —>Framework Search Paths 中把残留的给删除即可
将导航条的title颜色设置白色
NSDictionary *dict = [NSDictionary dictionaryWithObject:[UIColor whiteColor] forKey:NSForegroundColorAttributeName];
self.navigationController.navigationBar.titleTextAttributes = dict;
** 上传截图尺寸**
iphone4 ： 640x960 或者 960x640
phone5 640 x 1136或者1136 x 640
phone6 750 x 1334 或者1334 x 750
phone6 plus 1242 x 2208 或者 2208x1242
上传证书无效
打开钥匙串—》将过期的整数删除—》在Apple PKI网页下载最新的证书：(https://developer.apple.com/certificationauthority/AppleWWDRCA.cer) ，双击导入即可。
检测机型和系统
#define UIScreenWidth CGRectGetWidth([[UIScreen mainScreen] bounds])
#define UIScreenHeight CGRectGetHeight([[UIScreen mainScreen] bounds])
#define IS_IPHONE_4 ( fabs( ( double )[ [ UIScreen mainScreen ] bounds ].size.height - ( double )480 ) < DBL_EPSILON )
#define IS_IPHONE_5 ( fabs( ( double )[ [ UIScreen mainScreen ] bounds ].size.height - ( double )568 ) < DBL_EPSILON )
#define IS_IPHONE_6 ( fabs( ( double )[ [ UIScreen mainScreen ] bounds ].size.height - ( double )667 ) < DBL_EPSILON )
#define IS_IPHONE_6P ( fabs( ( double )[ [ UIScreen mainScreen ] bounds ].size.height - ( double )736 ) < DBL_EPSILON )
#define isIOS7 ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7)
#define isIOS9 ([[[UIDevice currentDevice] systemVersion] floatValue] >= 9)
#define equalIOS7 ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7 && [[[UIDevice currentDevice] systemVersion] floatValue] < 8)
//检查系统版本
#define SYSTEM_VERSION_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)
#define SYSTEM_VERSION_GREATER_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)
#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)
宏定义
//当前app版本
#define JAppVersion [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"]
//系统目录
#define JDocuments [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]
#define JCaches [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject]
//当前系统版本
#define JSystenVersion [[[UIDevice currentDevice]systemVersion] floatValue]
#define iPhone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136),[[UIScreen mainScreen] currentMode].size) : NO)
//重置图片大小
#define JSTRETCH_IMAGE(image, edgeInsets) (JSystenVersion <</span> 6.0 ? [image stretchableImageWithLeftCapWidth:edgeInsets.left topCapHeight:edgeInsets.top] : [image resizableImageWithCapInsets:edgeInsets resizingMode:UIImageResizingModeStretch])
//----------方法简写-------
#define JScreenWidth ([UIScreen mainScreen].bounds.size.width)
#define JScreenHeight ([UIScreen mainScreen].bounds.size.height)
#define JUserDefaults [NSUserDefaults standardUserDefaults]
#define JNotificationCenter [NSNotificationCenter defaultCenter]
//block self
#define WEAKSELF typeof(self) __weak weakSelf = self;
#define STRONGSELF typeof(weakSelf) __strong strongSelf = weakSelf;
//颜色
#define RGBA(r,g,b,a) [UIColor colorWithRed:r/255.f green:g/255.f blue:b/255.f alpha:a]
#define RGB(r,g,b) [UIColor colorWithRed:r/255.f green:g/255.f blue:b/255.f alpha:1]
／／字体
#define WFONT_BOLD(_size_) [UIFont fontWithName:@"HelveticaNeue-Bold" size:_size_]
#define WFONT(_size_) [UIFont fontWithName:@"HelveticaNeue" size:_size_]
#define dispatch_main_sync_safe(block)\
if ([NSThread isMainThread])\
{\
block();\
}\
else\
{\
dispatch_sync(dispatch_get_main_queue(), block);\
}
//调试
#ifdef DEBUG
#define NSLog(...) NSLog(__VA_ARGS__)
#else
#define NSLog(...)
#endif
UIColor 分类
#import "UIColor+Hex.h"
@implementation UIColor (Hex)
+ (UIColor *)colorWithHex:(NSInteger)hexValue alpha:(CGFloat)alphaValue {
return [UIColor colorWithRed:((float) ((hexValue & 0xFF0000) >> 16)) / 255.0
green:((float) ((hexValue & 0xFF00) >> 8)) / 255.0
blue:((float) (hexValue & 0xFF)) / 255.0
alpha:alphaValue];
}
+ (UIColor *)colorWithHex:(NSInteger)hexValue {
return [UIColor colorWithHex:hexValue alpha:1.0];
}
collectionView 默认选中
_indexpath = [NSIndexPath indexPathForRow:0 inSection:0 ];
[collectionView selectItemAtIndexPath:_indexpath animated:YES scrollPosition:(UICollectionViewScrollPositionTop)];
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
return _arr.count;
}
// The cell that is returned must be retrieved from a call to -dequeueReusableCellWithReuseIdentifier:forIndexPath:
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
CollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"cell" forIndexPath:indexPath];
cell.label.text = _arr[indexPath.item];
if (cell.isSelected) {
cell.label.backgroundColor = [UIColor grayColor];
cell.line.backgroundColor = [UIColor redColor];
} else {
cell.label.backgroundColor = [UIColor whiteColor];
cell.line.backgroundColor = [UIColor whiteColor];
}
return cell;
}
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
NSLog(@"---%ld---",indexPath.item);
CollectionViewCell *cell = (CollectionViewCell *)[collectionView cellForItemAtIndexPath:indexPath];
[self updateCellStatus:cell selected:YES];
}
-(void)updateCellStatus:(CollectionViewCell *)cell selected:(BOOL)selected {
if (selected == YES) {
cell.label.backgroundColor = [UIColor grayColor];
cell.line.backgroundColor = [UIColor redColor];
}
if (selected == NO) {
cell.label.backgroundColor = [UIColor whiteColor];
cell.line.backgroundColor = [UIColor whiteColor];
}
}
- (void)collectionView:(UICollectionView *)collectionView didDeselectItemAtIndexPath:(NSIndexPath *)indexPath {
CollectionViewCell *cell = (CollectionViewCell *)[collectionView cellForItemAtIndexPath:indexPath];
[self updateCellStatus:cell selected:NO];
}
