实用方法汇总(适时添加)

2. 散装

 
[self bringSubviewToFront:view];                  //将某个子视图调整到所有子视图前方显示

[self sendSubviewToBack:_backView];               //将某个视图发送到所有视图之后显示

[self insertSubview:view atIndex:2];              //将视图插到某个视图的处

[self insertSubview:view aboveSubview:viewlast];  //将第一个视图插到最后一个视图的上方

[self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"topborbg"] forBarMetrics:UIBarMetricsDefault]; //导航栏背景图片

[view.layer setCornerRadius:5]; //圆角半径

[view.layer setBorderWidth:1];  //边宽

[view.layer setBorderColor:[UIColor greenColor].CGColor]; //边框颜色

self.pageContenter.layer.shadowColor= [UIColorblackColor].CGColor;//阴影颜色

self.pageContenter.layer.shadowOffset=CGSizeMake(0,0);//阴影偏移

self.pageContenter.layer.shadowOpacity=0.5;//阴影不透明度

self.pageContenter.layer.shadowRadius=5.0;//阴影半径

[UIFont boldSystemFontOfSize:13.0]; //粗体

[btn_information setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; //buttom 永远不变字体颜色

btn_information.titleLabel.textColor = [UIColor whiteColor]; //buttom 只能用一次

-(NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window //仅仅支持横屏幕
{
    return UIInterfaceOrientationMaskPortrait;
}


[UIView animateWithDuration:0.3 animations:^{
    _superScrollView.contentOffset = CGPointMake(0, view.frame.origin.y); //block动画
}];


Mac：~/资源库/Application Support/MobileSync/备份/

UITableViewCell * cell = [tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:i inSection:0]]; //从tableview里取出cell
UITableViewCell * cell = [_tableView cellForRowAtIndexPath:indexPath];


[_tableView setSeparatorStyle:UITableViewCellSeparatorStyleNone]; //tableview没有分割线

self.selectionStyle = UITableViewCellSelectionStyleNone; //cell 选择无色

NSMutableAttributedString *content = [[NSMutableAttributedString alloc]initWithString:[NSString stringWithFormat:@"退改签"]];  //下划线
NSRange contentRange = {0,[content length]};
content addAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithInteger:NSUnderlineStyleSingle] range:contentRange];
label.attributedText = content;

find . -name "*.m" -or -name "*.h" |xargs grep -v "^$"|wc -l      //计算项目行数

[ UIScreen mainScreen ].applicationFrame.size.height  548   //不包含状态栏

[[UIScreen mainScreen] bounds].size.height                  568   //包含状态栏

- (BOOL)prefersStatusBarHidden                                            //iOS7隐藏状态栏和导航栏
{
    return YES;
}
-(void)viewWillAppear:(BOOL)animated
{
    self.navigationController.navigationBarHidden = YES;
}

- (CGSize)sizeWithFont:(UIFont *)font constrainedToSize:(CGSize)size lineBreakMode:(NSLineBreakMode)lineBreakMode NS_DEPRECATED_IOS(2_0, 7_0, "Use -boundingRectWithSize:options:attributes:context:"); // NSTextAlignment is not needed to determine size //计算文本高度

 UILabel *l = [[UILabel alloc] initWithFrame:_csView.bounds]; //Label直接显示在view的中间

 dispatch_async(dispatch_get_global_queue(0, 0), ^{});     //开多线程
 dispatch_async(dispatch_get_main_queue(), ^{});             //回主线程


NSData * data = [NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://imhomepage/w7ba722s8ky7uyzc.png"]]; //下载图片
UIImage * result = [UIImage imageWithData:data];

showCustomAlertMessage(@"请在系统设置中打开\"定位服务\"来允许\"12580\"确定您的位置");   //在字符串中添加双引号

[UIImageJPEGRepresentation([UIImage imageWithData:imageData], 1.0) length]      //计算图片大小

- (UIImage*) imageWithUIView:(UIView*) view  //view 转成 image
{ 

UIGraphicsBeginImageContext(view.bounds.size); 
CGContextRef context = UIGraphicsGetCurrentContext();
[view.layer renderInContext:context];
UIImage* tImage =UIGraphicsGetImageFromCurrentImageContext(); 
UIGraphicsEndImageContext(); 
return tImage;
}

//让界面上的所有可能是第一响应者的对象放弃第一响应
-(void)resignAllFirstResponder:(UIView*)supperView{
    for (UIView *view in supperView.subviews){
        if ([view isKindOfClass:[UITextView class]])
            [view resignFirstResponder];
        else{
            if ([[view subviews] count]!=0)
                [self resignAllFirstResponder:view];
        }}}

 tabelView.separatorInset = UIEdgeInsetsMake(0, 0, 0, 0);  //tableView的cell分割线位置靠左

启动页面去除状态栏  在info.plist添加行Status bar is initially hidden = YES

//底层画线

        CAShapeLayer *lineShape = nil;
        CGMutablePathRef linePath = nil;
        linePath = CGPathCreateMutable();
        lineShape = [CAShapeLayer layer];
        lineShape.lineWidth = 0.5;
        lineShape.lineCap = kCALineCapRound;
        [lineShape setStrokeColor:[UIColor colorWithRed:(float)169/255 green:(float)169/255 blue:(float)169/255 alpha:1].CGColor];
        int x = 0; int y = 79;
        int toX = 320; int toY = 80;
        CGPathMoveToPoint(linePath, NULL, x, y);
        CGPathAddLineToPoint(linePath, NULL, toX, toY);
        lineShape.path = linePath;
        CGPathRelease(linePath);
        [self.layer addSublayer:lineShape];

webView.backgroundColor = [UIColor whiteColor];  //webview背景色
webView.opaque = NO;

需要ARC的文件双击，并在输入框中输入：-fobjc-arc，如果不要ARC则输入：-fno-objc-arc

1. 获取农历

- (void)viewDidLoad

{
    [super viewDidLoad];
    NSString* string = @"20131226";  
    NSDateFormatter *inputFormatter = [[NSDateFormatter alloc] init]; 
    [inputFormatter setDateFormat:@"yyyyMMdd"];  
    NSDate* inputDate = [inputFormatter dateFromString:string];
    NSLog(@"date = %@",[self getChineseCalendarWithDate:inputDate]);
}

-(NSString*)getChineseCalendarWithDate:(NSDate *)date
{
    
    NSArray *chineseYears = [NSArray arrayWithObjects:
                             @"甲子", @"乙丑", @"丙寅", @"丁卯",  @"戊辰",  @"己巳",  @"庚午",  @"辛未",  @"壬申",  @"癸酉",
                             @"甲戌",   @"乙亥",  @"丙子",  @"丁丑", @"戊寅",   @"己卯",  @"庚辰",  @"辛己",  @"壬午",  @"癸未",
                             @"甲申",   @"乙酉",  @"丙戌",  @"丁亥",  @"戊子",  @"己丑",  @"庚寅",  @"辛卯",  @"壬辰",  @"癸巳",
                             @"甲午",   @"乙未",  @"丙申",  @"丁酉",  @"戊戌",  @"己亥",  @"庚子",  @"辛丑",  @"壬寅",  @"癸丑",
                             @"甲辰",   @"乙巳",  @"丙午",  @"丁未",  @"戊申",  @"己酉",  @"庚戌",  @"辛亥",  @"壬子",  @"癸丑",
                             @"甲寅",   @"乙卯",  @"丙辰",  @"丁巳",  @"戊午",  @"己未",  @"庚申",  @"辛酉",  @"壬戌",  @"癸亥", nil];
    
    NSArray *chineseMonths=[NSArray arrayWithObjects:
                            @"正月", @"二月", @"三月", @"四月", @"五月", @"六月", @"七月", @"八月",
                            @"九月", @"十月", @"冬月", @"腊月", nil];
    
    
    NSArray *chineseDays=[NSArray arrayWithObjects:
                          @"初一", @"初二", @"初三", @"初四", @"初五", @"初六", @"初七", @"初八", @"初九", @"初十",
                          @"十一", @"十二", @"十三", @"十四", @"十五", @"十六", @"十七", @"十八", @"十九", @"二十",
                          @"廿一", @"廿二", @"廿三", @"廿四", @"廿五", @"廿六", @"廿七", @"廿八", @"廿九", @"三十",  nil];
    
    
    NSCalendar *localeCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSChineseCalendar];
    unsigned unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit |  NSDayCalendarUnit;
    NSDateComponents *localeComp = [localeCalendar components:unitFlags fromDate:date];
    
    NSLog(@"%d_%d_%d  %@",localeComp.year,localeComp.month,localeComp.day, localeComp.date);
    
    NSString *y_str = [chineseYears objectAtIndex:localeComp.year-1];
    NSString *m_str = [chineseMonths objectAtIndex:localeComp.month-1];
    NSString *d_str = [chineseDays objectAtIndex:localeComp.day-1];
    
    NSString *chineseCal_str =[NSString stringWithFormat: @"%@_%@_%@",y_str,m_str,d_str];
    

    return chineseCal_str; 

}