Learning #4

- (void)strokeDashLineAddToView:(UIView *)view
                    strokeColor:(UIColor *)strokeColor{

    CAShapeLayer *shapeLayer = [CAShapeLayer layer];
    [shapeLayer setBounds:view.bounds];
    [shapeLayer setPosition:view.center];
    [shapeLayer setFillColor:[[UIColor clearColor] CGColor]];

    // strokeColor is dashLine CGColor, 1.0f is dashLine width

    [shapeLayer setStrokeColor:strokeColor.CGColor];
    [shapeLayer setLineWidth:1.0f];
    [shapeLayer setLineJoin:kCALineJoinBevel];

    // 15 is dashLine width, 5 is dashLine space
    [shapeLayer setLineDashPattern:
     [NSArray arrayWithObjects:[NSNumber numberWithInt:15],
      [NSNumber numberWithInt:5],nil]];

    CGMutablePathRef path = CGPathCreateMutable();
    CGPathMoveToPoint(path, NULL, 0, 0);
    CGPathAddLineToPoint(path, NULL, CGRectGetWidth(view.frame), 0);

    [shapeLayer setPath:path];
    CGPathRelease(path);
    [view.layer addSublayer:shapeLayer];
}

图片处理

http://blog.csdn.net/q199109106q/article/details/8615661

判断字符串含有空格

[string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]].length == 0

http://blog.csdn.net/zhangao0086/article/details/7234859

状态栏随意玩

首先去 Info.plist 里面，把 UIViewControllerBasedStatusBarAppearance 设置为 NO.

然后在你想要改变状态栏颜色的任何地方，写下面这行代码

UIApplication.sharedApplication().setStatusBarStyle(UIStatusBarStyle.Default, animated: true)

或者

UIApplication.sharedApplication().setStatusBarStyle(UIStatusBarStyle.LightContent, animated: true)

参考：

http://www.jianshu.com/p/9d6b6f790493

导航栏随便玩

添加多个`ButtonItem`

    UIView *v = [[UIView alloc] initWithFrame:CGRectMake(SCREEN_WIDTH - 80, 0, 80, 30)];
    UIBarButtonItem *barItem = [[UIBarButtonItem alloc] initWithCustomView:v];
    self.navigationItem.rightBarButtonItem = barItem;

玩转导航栏颜色

SYBaseNavigationController

 // 导航相关设置 导航栏颜色设置
    [self.navigationBar setBarTintColor:kNAVIGATION_BAR_COLOR];
    //返回按钮颜色设置
    self.navigationBar.tintColor = [UIColor whiteColor];

    //navTitle字体颜色设置
    [self.navigationBar setTitleTextAttributes:@{NSForegroundColorAttributeName:[UIColor whiteColor]}];
    [self.navigationBar setTranslucent:NO];

更改系统相册返回、取消按钮颜色, 遵循`UINavigationControllerDelegate`代理

#pragma mark - UINavigationControllerDelegate
- (void)navigationController:(UINavigationController *)navigationController
      willShowViewController:(UIViewController *)viewController
                    animated:(BOOL)animated{

    viewController.navigationController.navigationBar.tintColor = [UIColor whiteColor];
}

Controller

UINavigationController 修改某一导航控制器Item的颜色，如：访问相册时修改Cancle（默认蓝色）的颜色

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated{

    viewController.navigationItem.rightBarButtonItem.tintColor = [UIColor whiteColor];
}

解决全屏设置一个`NavigationController`的背景图片会出现一条横线

    [[UINavigationBar appearance] setBackgroundImage:[[UIImage alloc] init]
                                      forBarPosition:UIBarPositionAny
                                          barMetrics:UIBarMetricsDefault];

    [[UINavigationBar appearance] setShadowImage:[[UIImage alloc] init]];

参考:
http://my.oschina.net/ioslighter/blog/411972?p=1

保存图片，MV到相册

    NSString *strPath = [[NSBundle mainBundle] pathForResource:@"11.jpg" ofType:nil];

    UIImage *image = [UIImage imageWithContentsOfFile:strPath];

    UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);

参看：
http://blog.csdn.net/iukey/article/details/8017331
http://www.cnblogs.com/weilaikeji/archive/2013/03/10/2953206.html

生成推送pem

openssl pkcs12 -in CertificateName.p12 -out CertificateName.pem -nodes

`performSelector`延时调用导致的内存泄露,在`dealloc`中

[NSObject cancelPreviousPerformRequestsWithTarget:self];

[NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(method1:) object:nil]

introduce

http://blog.csdn.net/wangqiuyun/article/details/7587929

关闭`tableViewCell`点击效果

        cell.selectionStyle = UITableViewCellSelectionStyleNone;

比较一个时间是否在一个时间段内，如：8：20是否在9:00-10:00内

/**
 * @brief 判断当前时间是否在fromHour和toHour之间。如，fromHour=8，toHour=23时，即为判断当前时间是否在8:00-23:00之间
 */
- (BOOL)isBetweenFromHour:(NSInteger)fromHour toHour:(NSInteger)toHour
{
  NSDate *date8 = [self getCustomDateWithHour:8];
  NSDate *date23 = [self getCustomDateWithHour:23];

  NSDate *currentDate = [NSDate date];

  if ([currentDate compare:date8]==NSOrderedDescending && [currentDate compare:date23]==NSOrderedAscending)
  {
    NSLog(@"该时间在 %d:00-%d:00 之间！", fromHour, toHour);
    return YES;
  }
  return NO;
}

/**
 * @brief 生成当天的某个点（返回的是伦敦时间，可直接与当前时间[NSDate date]比较）
 * @param hour 如hour为“8”，就是上午8:00（本地时间）
 */
- (NSDate *)getCustomDateWithHour:(NSInteger)hour
{
  //获取当前时间
  NSDate *currentDate = [NSDate date];
  NSCalendar *currentCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
  NSDateComponents *currentComps = [[NSDateComponents alloc] init];

  NSInteger unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSWeekdayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;

  currentComps = [currentCalendar components:unitFlags fromDate:currentDate];

  //设置当天的某个点
  NSDateComponents *resultComps = [[NSDateComponents alloc] init];
  [resultComps setYear:[currentComps year]];
  [resultComps setMonth:[currentComps month]];
  [resultComps setDay:[currentComps day]];
  [resultComps setHour:hour];

  NSCalendar *resultCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
  return [resultCalendar dateFromComponents:resultComps];
}

http://blog.csdn.net/yuedong56/article/details/37600067

解决后台数据返回`NSNull`，导致Crash

https://github.com/nicklockwood/NullSafe

键盘遮挡问题

https://github.com/stars?utf8=%E2%9C%93&q=keyBoard
https://github.com/hackiftekhar/IQKeyboardManager
https://github.com/michaeltyson/TPKeyboardAvoiding
...

+ (void)IQKeyboardAutoToolbar:(BOOL)autoToolbar{

    IQKeyboardManager *manager = [IQKeyboardManager sharedManager];
    manager.enable = YES;
    manager.shouldResignOnTouchOutside = YES;
    manager.shouldToolbarUsesTextFieldTintColor = YES;
    manager.enableAutoToolbar = autoToolbar;

}

添加可变的字符串到`ActionSheet`

    UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:@"title" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:nil, nil];;
    for ( NSInteger i = 0; i < installMaps.count; i ++) {

        [sheet addButtonWithTitle:installMaps[i]];

    }

    [sheet showInView:self.view];

自定义界面横竖屏

http://www.cnblogs.com/sunkaifeng/p/5191172.html

sauchye · 2015-10-08T07:53:58Z

Xcode Setting

Xcode Plugin

~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/

Fix project warning(解决项目中的warning)

Build Setting->Other Warning Flags
Add:

-Wno-shorten-64-to-32
-Wno-sizeof-array-argument
-Wno-sizeof-pointer-memaccess

Xcode New Category

New(cmmand + N)->Source->Objective-C->File Type(Choose Category)

Xcode Project加速运行

工程目录->TARGETS->Build Settings->Build Options 设置Debug模式为:_DWARF_即可

sauchye · 2015-10-08T11:02:20Z

User Experience(优化用户体验)

获取用户是否开启通知

- (BOOL)isAllowedNotification {

    if (FSystemVersion >= 8.0) {
        UIUserNotificationSettings *setting = [[UIApplication sharedApplication] currentUserNotificationSettings];
        if (setting.types != UIUserNotificationTypeNone) {
            return YES;
        }
    } else {

        UIRemoteNotificationType type = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];
        if(type != UIRemoteNotificationTypeNone)
            return YES;
    }

    return NO;
}

优雅的处理iOS系统相关权限(iOS7及以上)

获取AVAudioSession录音权限

if ([[AVAudioSession sharedInstance] respondsToSelector:@selector(requestRecordPermission:)]){
   [[AVAudioSession sharedInstance] requestRecordPermission:^(BOOL granted) {

       if (granted) {
           //用户已允许，直接进行录制等，逻辑操作...

       }else {
           //用户拒绝，引导用户开启麦克风服务，直接跳转到该应用设置页面
       }
   }];

}

获取CLLocationManager定位权限
kCLAuthorizationStatusNotDetermined 用户没有做出选择
kCLAuthorizationStatusRestricted    无法使用定位服务，该状态用户无法改变
kCLAuthorizationStatusDenied        用户拒绝该应用使用定位服务或是定位服务总开关处于关闭状态

iOS 8
kCLAuthorizationStatusAuthorizedAlways  用户同意程序在可见时使用地理位置
kCLAuthorizationStatusAuthorizedWhenInUse 用户允许该程序运行时可以使用地理信息
kCLAuthorizationStatusAuthorized    用户允许该程序无论何时都可以使用地理信息

    if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusDenied  ) {
        //用户已拒绝开启定位服务，处理逻辑...
        //前往 开启定位授权
            if (floor(NSFoundationVersionNumber) > NSFoundationVersionNumber_iOS_7_1) {

                UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"提示" 
message:@"请在iPhone的“设置->隐私->位置”中允许访问位置信息" 
delegate:self cancelButtonTitle:nil otherButtonTitles:@"取消", @"设置", nil];
                [alertView show];
            }else{
                kTipsAlert(@"请在iPhone的“设置->隐私->位置”中允许访问位置信息");
            }

    }else{
        //用户已同意开启定位服务，处理逻辑...
    }

直接跳转到该App设置页面，就是这样。

   UIApplication *app = [UIApplication sharedApplication];
   NSURL *settingsURL = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
   if ([app canOpenURL:settingsURL]) {
       [app openURL:settingsURL];
   }

sauchye · 2015-10-12T06:03:18Z

iOS NSPredicate(iOS相关正则)

iOS 最新手机号码正则表达式

+ (BOOL)isVaildMobileNumber:(NSString *)mobileNumber{

//    NSString * MOBILE = @"^1(3[0-9]|5[0-35-9]|8[025-9])\\d{8}$";
//  
//    NSString * CM = @"^1(34[0-8]|(3[5-9]|5[017-9]|8[278])\\d)\\d{7}$";
// 
//    NSString * CU = @"^1(3[0-2]|5[256]|8[56])\\d{8}$";
//
//    NSString * CT = @"^1((33|53|8[09])[0-9]|349)\\d{7}$";
//
//    
//    NSPredicate *regextestmobile = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", MOBILE];
//    NSPredicate *regextestcm = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CM];
//    NSPredicate *regextestcu = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CU];
//    NSPredicate *regextestct = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CT];
//    
//    if (([regextestmobile evaluateWithObject:mobileNumber] == YES)
//        || ([regextestcm evaluateWithObject:mobileNumber] == YES)
//        || ([regextestct evaluateWithObject:mobileNumber] == YES)
//        || ([regextestcu evaluateWithObject:mobileNumber] == YES)){
//        
//        return YES;
//    }else{
//        return NO;
//    }

    NSString *regex = @"1[3|4|5|7|8|9][0-9]{9}";
    //    NSString *regex = @"^((13[0-9])|(147)|(15[^4,\\D])|(18[0,5-9]))\\d{8}$";
    NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
    BOOL isMatch = [pred evaluateWithObject:mobileNumber];
    return isMatch;

}

sauchye · 2015-10-12T09:02:03Z

iPhone Device

iPhone Info (iPhone Design)

型号                       启动图尺寸         分辨率            几倍图
iPhone 4/4s                320*480           640*960            2x
iPhone 5/5s                320*568           640*1136           2x
iPhone 6/6s                375*667           750*1334           2x
iPhone 6/6s Plus           414*736          1242*2208           3x

sauchye · 2015-10-14T08:34:18Z

UI相关

UILabel 同一个label自定义显示颜色

+ (NSMutableAttributedString *)attributedString:(NSString *)string
                                    rangeToText:(NSString *)text
                                      textColor:(UIColor *)textColor{

    NSRange range = [string rangeOfString:text];
    NSMutableAttributedString *attribute = [[NSMutableAttributedString alloc] initWithString:string];
    [attribute addAttributes:@{NSForegroundColorAttributeName:textColor} range:range];

    return attribute;
}

    textLbl.attributedText = [CDManager attributedString:text
                                             rangeToText:@"ABC"
                                               textColor:[UIColor grayColor]];

UIButton：设置图片按钮，上下显示title

关键代码

        //Title Top 显示
        [b setBackgroundImage:[UIImage imageNamed:@"xxx"] forState:UIControlStateNormal];
        b.titleEdgeInsets = UIEdgeInsetsMake(b.frame.size.height + 30, 0.0, 0.0, 0.0);

UIButton图片按钮左右显示title

https://github.com/kubatru/JTImageButton

Notice

Button设置圆角后设置titleEdgeInsets后title无法显示，解决方法

      //btn.layer.masksToBounds = YES;（去掉即可）
     btn.layer.cornerRadius = btn.frame.size.height / 2;

设置图片按钮layer的颜色

        btn.layer.borderColor = [UIColor orangeColor].CGColor;
        btn.layer.borderWidth = 0.5;

UITextField

修改UITextField光标颜色

self.usernameTextField.tintColor = kNAVIGATION_BAR_COLOR;

UIView抖动效果

比如登录或注册页面，用户输入错误或者设置有误，抖动`UITextField`,就比较好了，再设置错误`UITextField`的`borderColor`的颜色，我觉得就是比较完美的交互了。

- (void)shakeAnimationForView:(UIView *)view isVerticalShake:(BOOL)isVerticalShake{

    CALayer *layer = [view layer];
    CGPoint posLbl = [layer position];
    CGPoint x, y;

    if (!isVerticalShake) {

        y = CGPointMake(posLbl.x - 10, posLbl.y);
        x = CGPointMake(posLbl.x + 10, posLbl.y);
    }else{
        y = CGPointMake(posLbl.x, posLbl.y - 5);
        x = CGPointMake(posLbl.x, posLbl.y + 5);
    }

    CABasicAnimation * animation = [CABasicAnimation animationWithKeyPath:@"position"];
    [animation setTimingFunction:[CAMediaTimingFunction
                                  functionWithName:kCAMediaTimingFunctionEaseOut]];
    [animation setFromValue:[NSValue valueWithCGPoint:x]];
    [animation setToValue:[NSValue valueWithCGPoint:y]];
    [animation setAutoreverses:YES];
    [animation setDuration:0.09];
    [animation setRepeatCount:3];
    [layer addAnimation:animation forKey:nil];
}

参考
https://github.com/sauchye/SYTipsDemo/blob/master/SYTipsDemo/Controllers/Third/SYLoginViewController.m

UITableView

`UITableViewStyleGrouped` 样式`TableView`设置每个`section` height

- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{

    if (section == 0){
        return 15.0f;
    }
    return 20.0f;
}

- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section{
    //取巧的做法
    return 0.000001f;
}

详解：
http://www.cnblogs.com/kenshincui/p/3931948.html

UISearchController 定制SearchBar

http://www.brighttj.com/ios/how-to-create-a-custom-search-bar-using-uisearchcontroller.html

sauchye · 2015-10-31T07:28:47Z

Tips

AFNetWorking 简单判断网络存在情况

推荐实时网络监测
https://github.com/dustturtle/RealReachability

sauchye · 2015-11-11T09:46:18Z

iOS语言国际化

1、选中工程->PROJECT->Localizations 添加需要国际化的语言

2、新建Strings File，分别新建：InfoPlist和Localizable

3、选择添加的语言

4、最后就比较容易了

InfoPlist.string中存放App命名

CFBundleDisplayName = "iOS奇淫技巧”;(Chinese(Simplified))

CFBundleDisplayName = "iOSTipsDemo”;(English)

Localisable

(English)
"Home" = "Home";

"Found" = "Found";

"Me" = "Me";

Chinese(Simplified)
"Home" = "主页";

"Found" = "发现";

"Me" = "我";

可参考：
https://github.com/sauchye/SYTipsDemo

获取系统语言判断

+ (NSString *)currentDeviceLanguage{

    NSArray *languages = [NSLocale preferredLanguages];
    NSString *currentLanguage = [languages objectAtIndex:0];

    return currentLanguage;
}

常用的语言判断`iOS8` `iOS9`有差别

+ (BOOL)isZh_Hans_CN{

    //zh-Hans x86_64
    return  [[self currentDeviceLanguage] isEqualToString:@"zh-Hans-CN"] ||
                [[self currentDeviceLanguage] isEqualToString:@"zh-Hans-US"] ||
                      [[self currentDeviceLanguage] isEqualToString:@"zh-Hans"] ||
                      [[self currentDeviceLanguage] isEqualToString:@"x86_64"];
}

+ (BOOL)isEN_US{

    // en-CN
    return [[self currentDeviceLanguage] isEqualToString:@"en-CN"] ||
                [[self currentDeviceLanguage] isEqualToString:@"en-US"];
}

sauchye · 2015-11-18T01:44:43Z

ARC

intro

http://www.jianshu.com/p/1928b54e1253
http://www.jianshu.com/p/09c5141d4531?utm_campaign=maleskine&utm_content=note&utm_medium=writer_share&utm_source=weibo#

sauchye · 2015-12-31T08:19:54Z

Tag遍历所有的按钮

  for (NSInteger i = babyGenderTag; i <= sender.tag + 1; i ++) {
        UIButton *btn = (UIButton *)[self.view viewWithTag:i];
        btn.selected = NO;
    }

   for (UIView *v in allView.subviews) {
        if ([v isKindOfClass:[UIButton class]]) {
            UIButton *btn = (UIButton *)v;
    }

数组排序

"time" 数组中字典的key，NO表示升序

     NSArray *sortDescriptors = [NSArray arrayWithObject:
                                    [NSSortDescriptor sortDescriptorWithKey:@"time"
                                                                  ascending:NO]];
        [self.data sortUsingDescriptors:sortDescriptors];

sauchye · 2016-01-16T09:43:45Z

Json转Plist相互转换

http://json2plist.sinaapp.com/

Code Review

http://mtydev.net/?p=59#comment-680
http://coolshell.cn/articles/11432.html#more-11432

一些姿势

http://toutiao.io/subjects/35291

`Cell`复用文字加深处理

    if (!cell) {

        cell = [[CDRemindCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cdRemindCell];
    }else{
        while ([cell.contentView.subviews lastObject] != nil) {
            [(UIView *)[cell.contentView.subviews lastObject] removeFromSuperview];
        }
    }

设置`tableView`和`Cell` 的背景色

tableView.backgroundColor = [UIColor clearColor];

//cell
self.backgroundColor = [UIColor clearColor];

~~self.contentView.backgroundColor = [UIColor clearColor];~~

修改点击Cell显示背景色

  cell.selectedBackgroundView = [[UIView alloc] initWithFrame:cell.contentView.frame];
  cell.selectedBackgroundView.backgroundColor = backgroundColor;

内存问题

`imageNamed` 与`imageWithContentsOfFile`的区别

http://www.cnblogs.com/pengyingh/articles/2355033.html

指定路径

NSString *path = [[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] stringByAppendingPathComponent:pathName];
    BOOL bo = [[NSFileManager defaultManager] createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil];
    NSAssert(bo,@"创建目录失败");

    NSString *result = [path stringByAppendingPathComponent:fileName];

`pickerView`去掉系统2条横线

- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view {
    CGFloat width = 125.0f;
    CGFloat height = 20.0f;

    UIView * myView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, width, height)];

    UILabel * complateLabel = [[UILabel alloc] init];
    complateLabel.center = myView.center;
    complateLabel.bounds = CGRectMake(0, 0, width, height);
    complateLabel.textColor = [UIColor blackColor];
    complateLabel.textAlignment = NSTextAlignmentCenter;
    complateLabel.font = [UIFont systemFontOfSize:22.f];
    complateLabel.text = _startArray[component][row];
    [myView addSubview:complateLabel];

    ((UIView *)[_startPickerView.subviews objectAtIndex:1]).backgroundColor = [UIColor clearColor];
    if (IS_IOS7) {
        ((UIView *)[_startPickerView.subviews objectAtIndex:2]).backgroundColor = [UIColor clearColor];
    }
    return myView;
}

`TextField`限制输入长度

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{

    NSMutableString *text = [textField.text mutableCopy];
    [text replaceCharactersInRange:range withString:string];


    if (textField == self.phoneTextField) {

        return  text.length <= 11;

    }else if (textField == self.codeTextField){

        return text.length <= 6;

    }else if (textField == self.usernameTextField){
        return text.length <= 6;
    }
    return YES;
}

`SearchBar`

更改SearchBar返回按钮颜色文字

    [[UIBarButtonItem appearanceWhenContainedIn: [UISearchBar class], nil] setTintColor:[UIColor whiteColor]];
    [[UIBarButtonItem appearanceWhenContainedIn: [UISearchBar class], nil] setTitle:@"取消"];

去掉修改SearchBar barTintColor后出现横线

searchBar.searchBarStyle = UISearchBarStyleMinima;

sauchye · 2016-09-19T05:45:35Z

解决无导航栏push到有导航栏bug


- (void)viewWillAppear:(BOOL)animated{

    [super viewWillAppear:animated];

    [self.navigationController setNavigationBarHidden:YES animated:animated];
}

- (void)viewWillDisappear:(BOOL)animated{

    [super viewWillDisappear:animated];
    [self.navigationController setNavigationBarHidden:NO animated:animated];
}

参考:
http://blog.luckymore.wang/2015/05/19/iOS%E5%AD%A6%E4%B9%A0%E7%AC%94%E8%AE%B0-%E4%BB%8EQQ%E7%9A%84%E4%B8%80%E4%B8%AABug%E5%BC%95%E5%8F%91%E7%9A%84%E5%85%B3%E4%BA%8E%E5%AF%BC%E8%88%AA%E6%A0%8F%E7%9A%84%E6%80%9D%E8%80%83/

http://www.jianshu.com/p/e4448c24d900/comments/3851074

sauchye · 2016-12-14T03:53:52Z

`UITableView` `UITableViewStyleGrouped` 去掉段头空白

self.automaticallyAdjustsScrollViewInsets = NO;

- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
    return 0.01f;
}

- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section{
    return 10.f;
}

`UITableView` `Cell`单选

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    [tableView deselectRowAtIndexPath:indexPath animated:YES];
    UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
    NSArray *array = [tableView visibleCells];
    for (UITableViewCell *cell in array) {
        [cell setAccessoryType:UITableViewCellAccessoryNone];
    }
    [cell setAccessoryType:UITableViewCellAccessoryCheckmark];
}

UITableViewHeaderFooterView 背景色

- (void)tableView:(UITableView *)tableView willDisplayFooterView:(UIView *)view forSection:(NSInteger)section {
    view.tintColor = [UIColor clearColor];
}

更新图片
UIImage *img = [info objectForKey:@"UIImagePickerControllerEditedImage"];

goto tabbarController

- (void)goToTabarController:(UIViewController *)controller{
    
    if ([self.view.window.rootViewController isKindOfClass:[ZDTabBarController class]]) {
        /// 已经进入主页面
        return;
    }
    
    ZDTabBarController *tabController = [[ZDTabBarController alloc] init];
    tabController.view.frame = self.view.window.bounds;
    [UIView transitionWithView:self.view.window
                      duration:0.01
                       options:UIViewAnimationOptionTransitionCrossDissolve
                    animations:^{
                        self.view.window.rootViewController = tabController;
                    }
                    completion:nil];
}

check installed map

+ (NSArray *)checkInstallMapApps{
    //
    NSArray *mapSchemeArr = @[@"http://maps.apple.com/", @"iosamap://navi",@"baidumap://map/", @"comgooglemaps://"];
    
//    NSMutableArray *appListArr = [[NSMutableArray alloc] initWithObjects:@"苹果地图", nil];
    NSMutableArray *appListArr = [NSMutableArray new];

    for (int i = 0; i < [mapSchemeArr count]; i++) {
        if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@",[mapSchemeArr objectAtIndex:i]]]]) {
            if (i == 0) {
                [appListArr addObject:@"苹果地图"];
            }else if (i == 1){
                [appListArr addObject:@"高德地图"];
            }else if (i == 2){
                [appListArr addObject:@"百度地图"];
            }else{
                [appListArr addObject:@"谷歌地图"];
            }
        }
    }
    return appListArr;
}

New iPhone

//判断iPHoneX XS
/*-------------- isiPhone尺寸 宏定义--------------*/
#define iPhoneXBottomHeight (isiPhoneXAll?34:0)
#define iPhoneXHeadHeight (isiPhoneXAll?22:0)
#define isiPhone4 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), [[UIScreen mainScreen] currentMode].size) : NO)
#define isiPhone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), [[UIScreen mainScreen] currentMode].size) : NO)
#define isiPhone6 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(750, 1334), [[UIScreen mainScreen] currentMode].size) : NO)
#define isiPhone6p ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1242, 2208), [[UIScreen mainScreen] currentMode].size) : NO)
//判断iPHoneX XS
#define isiPhoneX ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1125, 2436), [[UIScreen mainScreen] currentMode].size) : NO)
//判断iPhoneXR
#define isiPhoneXR ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(828, 1792), [[UIScreen mainScreen] currentMode].size) && !UI_IS_IPAD : NO)
//判断iPhoneXs Max
#define isiPhoneXS Max ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1242, 2688), [[UIScreen mainScreen] currentMode].size) && !UI_IS_IPAD : NO)
///#define isiPhoneXAll (isiPhoneX || isiPhoneXR || isiPhoneXMAX) 横屏:width 竖屏:height
#define isiPhoneXAll ([UIScreen mainScreen].bounds.size.width == 414 || [UIScreen mainScreen].bounds.size.height == 896)

画对角圆角，两个圆角或圆角:

    UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 200, 200)];
    imageView.image = [Tools getAppIconImage];
    // 绘制圆角 需设置的圆角 使用"|"来组合
    UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:imageView.bounds
                                                   byRoundingCorners:UIRectCornerTopLeft| UIRectCornerBottomRight         cornerRadii:CGSizeMake(30, 30)];
    CAShapeLayer *maskLayer = [[CAShapeLayer alloc]init];
    // 设置大小
    maskLayer.frame = imageView.bounds;
    maskLayer.path  = maskPath.CGPath;
    imageView.layer.mask = maskLayer;
    [self.view addSubview:imageView];
    [imageView setCenter:self.view.center];

    UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(100, 100, 100, 100)];
    imageView.image = [Tools getAppIconImage];
    // 开始对imageView进行画图
    UIGraphicsBeginImageContextWithOptions(imageView.bounds.size, NO, 0.0);
    // 使用贝塞尔曲线画出一个圆形图
    [[UIBezierPath bezierPathWithRoundedRect:imageView.bounds cornerRadius:imageView.frame.size.width] addClip];
    [imageView drawRect:imageView.bounds];
    imageView.image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    [self.view addSubview:imageView];
    [imageView setCenter:self.view.center];

https://juejin.im/post/5be5390df265da61163949f6

sauchye · 2017-02-07T02:34:17Z

https://github.com/soffes/SAMKeychain
#import <SAMKeychain/SAMKeychain.h>

        NSDictionary *dd = @{@"pwd":self.passwordTextField.text,
                             @"name":self.accountTextField.text,
                             @"gender":@"1",
                             @"age":@"22"};
        
        NSData *data = [NSJSONSerialization dataWithJSONObject:dd options:NSJSONWritingPrettyPrinted error:nil];
        //save data
        [SAMKeychain setPasswordData:data
                          forService:serviceKey
                             account:self.accountTextField.text
                               error:nil];
        //save string
        [SAMKeychain setPassword:self.passwordTextField.text
                      forService:serviceKey
                         account:self.accountTextField.text];

    // delete
    [SAMKeychain deletePasswordForService:serviceKey
                                  account:self.accountTextField.text];

        //read
        NSString *dataString = [SAMKeychain passwordForService:serviceKey account:self.accountTextField.text];
        NSDictionary *dddd = [self dictionaryWithJsonString:dataString];

sauchye · 2017-07-25T09:15:53Z

内购

https://www.jianshu.com/p/cb1c8b4ba2c0
https://www.jianshu.com/p/86ac7d3b593a
https://www.cnblogs.com/TheYouth/p/6847014.html

sauchye · 2017-09-18T05:05:48Z

spare
避免输入表情 emoji
https://gist.github.com/cihancimen/4146056

- (BOOL)stringContainsEmoji:(NSString *)string {
    __block BOOL returnValue = NO;
    [string enumerateSubstringsInRange:NSMakeRange(0, [string length]) options:NSStringEnumerationByComposedCharacterSequences usingBlock:
     ^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {
         
         const unichar hs = [substring characterAtIndex:0];
         // surrogate pair
         if (0xd800 <= hs && hs <= 0xdbff) {
             if (substring.length > 1) {
                 const unichar ls = [substring characterAtIndex:1];
                 const int uc = ((hs - 0xd800) * 0x400) + (ls - 0xdc00) + 0x10000;
                 if (0x1d000 <= uc && uc <= 0x1f77f) {
                     returnValue = YES;
                 }
             }
         } else if (substring.length > 1) {
             const unichar ls = [substring characterAtIndex:1];
             if (ls == 0x20e3) {
                 returnValue = YES;
             }

         } else {
             // non surrogate
             if (0x2100 <= hs && hs <= 0x27ff) {
                 returnValue = YES;
             } else if (0x2B05 <= hs && hs <= 0x2b07) {
                 returnValue = YES;
             } else if (0x2934 <= hs && hs <= 0x2935) {
                 returnValue = YES;
             } else if (0x3297 <= hs && hs <= 0x3299) {
                 returnValue = YES;
             } else if (hs == 0xa9 || hs == 0xae || hs == 0x303d || hs == 0x3030 || hs == 0x2b55 || hs == 0x2b1c || hs == 0x2b1b || hs == 0x2b50) {
                 returnValue = YES;
             }
         }
     }];
    
    return returnValue;
}

sauchye · 2018-11-21T09:00:14Z

spare

sauchye added the iOS Tips label Sep 11, 2015

sauchye changed the title ~~iOS语言国际化~~ iOS Tips Sep 30, 2015

sauchye added navigationBar navigationController labels Nov 11, 2015

sauchye added view blog labels Mar 25, 2016

sauchye changed the title ~~iOS Tips~~ Learning Nov 22, 2018

sauchye removed blog iOS Tips navigationBar navigationController view labels Nov 28, 2018

Learning #4

Learning #4

Comments

sauchye commented Sep 11, 2015 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

iOS长期学习路线以及必备技能

学习资源

Swift 5.0

RxSwift

2015优秀博客

源码

社区、论坛、分享

提高篇

GitHub搜索

版本管理

插件管理

来自巧大推荐的iOS/Mac OS开发博客

求职跳槽篇，基础补脑。

收集项目中常遇到一些UI需求

ScrollView

TableView

UILabel

UIButton

UISwitch

popView

WebView 加载处理

SDWebImage加载网络图片

网络图片加载框架

sauchye commented Sep 29, 2015

干货

Label各种字体显示设置

画虚线

图片处理

判断字符串含有空格

状态栏随意玩

首先去 Info.plist 里面，把 UIViewControllerBasedStatusBarAppearance 设置为 NO.

参考：

导航栏随便玩

添加多个ButtonItem

玩转导航栏颜色

更改系统相册返回、取消按钮颜色, 遵循UINavigationControllerDelegate代理

Controller

UINavigationController 修改某一导航控制器Item的颜色，如：访问相册时修改Cancle（默认蓝色）的颜色

解决全屏设置一个NavigationController的背景图片会出现一条横线

保存图片，MV到相册

生成推送pem

performSelector延时调用导致的内存泄露,在dealloc中

关闭tableViewCell点击效果

比较一个时间是否在一个时间段内，如：8：20是否在9:00-10:00内

解决后台数据返回NSNull，导致Crash

键盘遮挡问题

添加可变的字符串到ActionSheet

自定义界面横竖屏

Uh oh!

sauchye commented Oct 8, 2015

Xcode Setting

Xcode Plugin

Fix project warning(解决项目中的warning)

Xcode New Category

Xcode Project加速运行

Uh oh!

sauchye commented Oct 8, 2015

User Experience(优化用户体验)

获取用户是否开启通知

优雅的处理iOS系统相关权限(iOS7及以上)

Uh oh!

sauchye commented Oct 12, 2015

iOS NSPredicate(iOS相关正则)

iOS 最新手机号码正则表达式

Uh oh!

sauchye commented Oct 12, 2015

iPhone Device

Uh oh!

sauchye commented Oct 14, 2015

UI相关

UILabel 同一个label自定义显示颜色

UIButton：设置图片按钮，上下显示title

UIButton图片按钮左右显示title

Notice

UITextField

sauchye commented Sep 11, 2015 •

edited

Loading

`UILabel`

`UIButton`

`UISwitch`

`popView`

`Label`各种字体显示设置

添加多个`ButtonItem`

更改系统相册返回、取消按钮颜色, 遵循`UINavigationControllerDelegate`代理

解决全屏设置一个`NavigationController`的背景图片会出现一条横线

`performSelector`延时调用导致的内存泄露,在`dealloc`中

关闭`tableViewCell`点击效果

解决后台数据返回`NSNull`，导致Crash

添加可变的字符串到`ActionSheet`

比如登录或注册页面，用户输入错误或者设置有误，抖动`UITextField`,就比较好了，再设置错误`UITextField`的`borderColor`的颜色，我觉得就是比较完美的交互了。

`UITableViewStyleGrouped` 样式`TableView`设置每个`section` height

sauchye commented Oct 31, 2015 •

edited

Loading

sauchye commented Nov 11, 2015 •

edited

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常用的语言判断`iOS8` `iOS9`有差别

sauchye commented Dec 31, 2015 •

edited

Loading

sauchye commented Jan 16, 2016 •

edited

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`Cell`复用文字加深处理

设置`tableView`和`Cell` 的背景色