- Plain类型TableView的HeaderView和FooterView不停靠上下边缘
大家都知道Plain的tableView头尾视图会附着在上下边缘，现在我不想让它附着了（去掉黏性），方法如下①:
自定义HeaderView.h：
HeaderView.m
自定义FooterView.h
FooterView.m
使用：
方法②
- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
CGFloat sectionHeaderHeight = 5;
if (scrollView.contentOffset.y<=sectionHeaderHeight&&scrollView.contentOffset.y>=0)
{
scrollView.contentInset = UIEdgeInsetsMake(-scrollView.contentOffset.y, 0, 0, 0);
}
else if (scrollView.contentOffset.y>=sectionHeaderHeight)
{
scrollView.contentInset = UIEdgeInsetsMake(-sectionHeaderHeight, 0, 0, 0);
}
}
正则判断
//邮箱
+ (BOOL) validateEmail:(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];
}
//手机号码验证
+ (BOOL) validateMobile:(NSString *)mobile {
//手机号以13， 15，18开头，八个 \d 数字字符
NSString *phoneRegex = @"^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$";
NSPredicate *phoneTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",phoneRegex];
return [phoneTest evaluateWithObject:mobile];
}
//用户名
+ (BOOL) validateUserName:(NSString *)name {
NSString *userNameRegex = @"^[A-Za-z0-9]{6,20}+$";
NSPredicate *userNamePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",userNameRegex];
BOOL B = [userNamePredicate evaluateWithObject:name];
return B;
}
//密码
+ (BOOL) validatePassword:(NSString *)passWord {
NSString *passWordRegex = @"^[a-zA-Z0-9]{6,12}+$";
NSPredicate *passWordPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",passWordRegex];
return [passWordPredicate evaluateWithObject:passWord];
}
//身份证号
+ (BOOL) validateIdentityCard: (NSString *)identityCard {
BOOL flag;
if (identityCard.length <= 0) {
flag = NO;
return flag;
}
NSString *regex2 = @"^(\d{14}|\d{17})(\d|[xX])$";
NSPredicate *identityCardPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];
return [identityCardPredicate evaluateWithObject:identityCard];
}
//数字
+ (BOOL) validateCount: (NSString *)count {
NSString countRegex = @"^[0-9]$";
NSPredicate *countTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", countRegex];
return [countTest evaluateWithObject:count];
}
//网址
+ (BOOL) validateURL:(NSString )URL
NSString URLRegex1 = @"^\w+((\-\w+)|(\.\w+))@[A-Za-z0-9]+((\.|\-)[A-Za-z0-9]+).[A-Za-z0-9]+$";
NSPredicate *URLTest1 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", URLRegex1];
NSString URLRegex2 = @"http+:[^\s]";
NSPredicate *URLTest2 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", URLRegex2];
if ([URLTest1 evaluateWithObject:URL] == YES || [URLTest2 evaluateWithObject:URL] == YES) {
return YES;
}else {
return NO;
}
}十六进制数字转颜色
+ (UIColor *)colorWithHexString:(NSString *)hexString {
unsigned int red,green,blue;
NSRange range;
range.length = 2;
range.location = 0;
[[NSScanner scannerWithString:[hexString substringWithRange:range]]scanHexInt:&red];
range.location = 2;
[[NSScanner scannerWithString:[hexString substringWithRange:range]]scanHexInt:&green];
range.location = 4;
[[NSScanner scannerWithString:[hexString substringWithRange:range]]scanHexInt:&blue];
return [UIColor colorWithRed:(float)(red/255.0f)green:(float)(green / 255.0f) blue:(float)(blue / 255.0f)alpha:1.0f];
}-
星星评分（传参型,支持NIB和代码）
StarView.h
StarView.png
StarView.m
- (instancetype) initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
self.backgroundColor = [UIColor clearColor];//主背景颜色为透明
[self _creatView];
}
return self;
}
- (void)awakeFromNib {
[super awakeFromNib];
self.backgroundColor = [UIColor clearColor];//主背景颜色为透明
[self _creatView];
}
- (void)_creatView {
//创建灰黄星星
UIImage *yellowImg = [UIImage imageNamed:@"StarsForeground"];//灰星星图片
UIImage *grayImg = [UIImage imageNamed:@"StarsBackground"];//黄星星图片
_grayView = [[UIView alloc]initWithFrame:CGRectMake(0.f, 0.f, grayImg.size.width * 5.f, grayImg.size.height)];//灰星星图片frame
_grayView.backgroundColor = [UIColor colorWithPatternImage:grayImg];//灰星星图片背景颜色
[self addSubview:_grayView];//加载灰星星图片
_yellowView= [[UIView alloc]initWithFrame:CGRectMake(0.f, 0.f, yellowImg.size.width * 5.f, yellowImg.size.height)];//黄星星图片frame
_yellowView.backgroundColor = [UIColor colorWithPatternImage:yellowImg];//黄星星图片背景颜色
[self addSubview:_yellowView];//加载黄星星图片
// 计算缩放倍数
CGFloat scale = self.frame.size.height / yellowImg.size.height;
//放大倍数
CGAffineTransform t = CGAffineTransformMakeScale(scale, scale);//高宽同比例缩放
_grayView.transform = t;
_yellowView.transform = t;
//星星视图修改transform后，坐标会被改变，重新恢复坐标
_yellowView.origin = CGPointZero;
_grayView.origin = CGPointZero;
}
- (void)setRating:(CGFloat)rating {
if (_rating != rating) {
_rating = rating;
CGFloat s = [self backFloatWithRatingFloat:_rating];
CGFloat yellowWidth = s * self.frame.size.width;
_yellowView.width = yellowWidth;//将比例后宽度设置为黄星星宽度
}
}
//大于等于N.5的按N+1算，小于N.f按大于N按N.5算，等于N按N算（0 < N <5）
- (CGFloat) backFloatWithRatingFloat:(CGFloat)ratingFloat {
if (ratingFloat == floorf(ratingFloat)) {
return floorf(ratingFloat) / 5.f;
}else if (ratingFloat > floorf(ratingFloat) && ratingFloat <= (floorf(ratingFloat) + 0.5)) {
return (floorf(ratingFloat) + 0.5f) / 5.f;
}else {
return (floorf(ratingFloat) + 1.f) / 5.f;
}
}
- (void)layoutSubviews {
[super layoutSubviews];
//创建灰黄星星
UIImage *yellowImg = [UIImage imageNamed:@"StarsForeground"];//灰星星图片
UIImage *grayImg = [UIImage imageNamed:@"StarsBackground"];//黄星星图片
_grayView.backgroundColor = [UIColor colorWithPatternImage:grayImg];//灰星星图片背景颜色
_yellowView.backgroundColor = [UIColor colorWithPatternImage:yellowImg];//黄星星图片背景颜色
}
PS：评分为五星满分，可自行修改成自己的需求（backFloatWithRatingFloat:）
查看ipa支持版本（32位，64位）
取出ipa的执行文件，在终端输入otool -vh ipa执行文件路径显示/隐藏文件
//显示
defaults write com.apple.finder AppleShowAllFiles -bool true
killall Finder
//隐藏
defaults write com.apple.finder AppleShowAllFiles -bool false
killall Finder查看工程量
find . -name ".m" -or -name ".h" -or -name ".xib" -or -name ".c" |xargs wc -l获取iOS设备的型号
+(NSString*)deviceString {
struct utsname systemInfo;
uname(&systemInfo);
NSString *deviceString = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
if ([deviceString isEqualToString:@"iPhone1,1"]) return @"iPhone 1G";
if ([deviceString isEqualToString:@"iPhone1,2"]) return @"iPhone 3G";
if ([deviceString isEqualToString:@"iPhone2,1"]) return @"iPhone 3GS";
if ([deviceString isEqualToString:@"iPhone3,1"]) return @"iPhone 4 GSM";
if ([deviceString isEqualToString:@"iPhone3,2"]) return @"iPhone 4 WCDMA";
if ([deviceString isEqualToString:@"iPod1,1"]) return @"iPod Touch 1G";
if ([deviceString isEqualToString:@"iPod2,1"]) return @"iPod Touch 2G";
if ([deviceString isEqualToString:@"iPod3,1"]) return @"iPod Touch 3G";
if ([deviceString isEqualToString:@"iPod4,1"]) return @"iPod Touch 4G";
if ([deviceString isEqualToString:@"iPad1,1"]) return @"iPad";
if ([deviceString isEqualToString:@"iPad2,1"]) return @"iPad 2 (WiFi)";
if ([deviceString isEqualToString:@"iPad2,2"]) return @"iPad 2 (GSM)";
if ([deviceString isEqualToString:@"iPad2,3"]) return @"iPad 2 (CDMA)";
if ([deviceString isEqualToString:@"i386"]) return @"Simulator";
if ([deviceString isEqualToString:@"x86_64"]) return @"Simulator";
NSLog(@"NOTE: Unknown device type: %@", deviceString); return deviceString;
}
//获取系统版本
NSLog([[UIDevice currentDevice] name]); // Name of the phone as named by u
NSLog([[UIDevice currentDevice] uniqueIdentifier]); // A GUID like string
NSLog([[UIDevice currentDevice] systemName]); // "iPhone OS"
NSLog([[UIDevice currentDevice] systemVersion]); // "2.2.1"
NSLog([[UIDevice currentDevice] model]); // "iPhone" on both devices
NSLog([[UIDevice currentDevice] localizedModel]); // "iPhone" on both devices
float version = [[[UIDevice currentDevice] systemVersion] floatValue];
补全
