po [[self view]recursiveDescription]
* 當視圖第一次顯示的時候會被調用 * 當這個視圖顯示到屏幕上了,點擊按鈕 * 添加子視圖也會調用這個方法 * 當本視圖的大小發生改變的時候是會調用的 * 當子視圖的frame發生改變的時候是會調用的 * 當刪除子視圖的時候是會調用的
// 定義一個特殊字符的集合 NSCharacterSet *set = [NSCharacterSet characterSetWithCharactersInString: @"@/:;()¥「」"、[]{}#%-*+=_\\|~<>$€^•'@#$%^&*()_+'\""]; // 過濾字符串的特殊字符 NSString *newString = [trimString stringByTrimmingCharactersInSet:set];
//平移按鈕 CGAffineTransform transForm = self.buttonView.transform; self.buttonView.transform = CGAffineTransformTranslate(transForm, 10, 0); //旋轉按鈕 CGAffineTransform transForm = self.buttonView.transform; self.buttonView.transform = CGAffineTransformRotate(transForm, M_PI_4); //縮放按鈕 self.buttonView.transform = CGAffineTransformScale(transForm, 1.2, 1.2); //初始化復位 self.buttonView.transform = CGAffineTransformIdentity;
首先在viewDidLoad方法加入如下代碼: if ([self.tableView respondsToSelector:@selector(setSeparatorInset:)]) { [self.tableView setSeparatorInset:UIEdgeInsetsZero]; } if ([self.tableView respondsToSelector:@selector(setLayoutMargins:)]) { [self.tableView setLayoutMargins:UIEdgeInsetsZero]; } 而後在重寫willDisplayCell方法 - (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{ if ([cell respondsToSelector:@selector(setSeparatorInset:)]) { [cell setSeparatorInset:UIEdgeInsetsZero]; } if ([cell respondsToSelector:@selector(setLayoutMargins:)]) { [cell setLayoutMargins:UIEdgeInsetsZero]; } }
// 獲取時間間隔 #define TICK CFAbsoluteTime start = CFAbsoluteTimeGetCurrent(); #define TOCK NSLog(@"Time: %f", CFAbsoluteTimeGetCurrent() - start)
// 隨機顏色 #define RANDOM_COLOR [UIColor colorWithRed:arc4random_uniform(256) / 255.0 green:arc4random_uniform(256) / 255.0 blue:arc4random_uniform(256) / 255.0 alpha:1] // 顏色(RGB) #define RGBCOLOR(r, g, b) [UIColor colorWithRed:(r)/255.0f green:(g)/255.0f blue:(b)/255.0f alpha:1] // 利用這種方法設置顏色和透明值,可不影響子視圖背景色 #define RGBACOLOR(r, g, b, a) [UIColor colorWithRed:(r)/255.0f green:(g)/255.0f blue:(b)/255.0f alpha:(a)]
#define Alert(_S_, ...) [[[UIAlertView alloc] initWithTitle:@"提示" message:[NSString stringWithFormat:(_S_), ##__VA_ARGS__] delegate:nil cancelButtonTitle:@"肯定" otherButtonTitles:nil] show]
- (void)exitApplication { AppDelegate *app = [UIApplication sharedApplication].delegate; UIWindow *window = app.window; [UIView animateWithDuration:1.0f animations:^{ window.alpha = 0; } completion:^(BOOL finished) { exit(0); }]; }
NSArray *array = [NSArray arrayWithObjects:@"2.0", @"2.3", @"3.0", @"4.0", @"10", nil]; CGFloat sum = [[array valueForKeyPath:@"@sum.floatValue"] floatValue]; CGFloat avg = [[array valueForKeyPath:@"@avg.floatValue"] floatValue]; CGFloat max =[[array valueForKeyPath:@"@max.floatValue"] floatValue]; CGFloat min =[[array valueForKeyPath:@"@min.floatValue"] floatValue]; NSLog(@"%f\n%f\n%f\n%f",sum,avg,max,min);
- (void)touchesEnded:(NSSet<UITouch> *)touches withEvent:(UIEvent *)event { [self editStringColor:self.label.text editStr:@"好" color:[UIColor blueColor]]; } - (void)editStringColor:(NSString *)string editStr:(NSString *)editStr color:(UIColor *)color { // string爲總體字符串, editStr爲須要修改的字符串 NSRange range = [string rangeOfString:editStr]; NSMutableAttributedString *attribute = [[NSMutableAttributedString alloc] initWithString:string]; // 設置屬性修改字體顏色UIColor與大小UIFont [attribute addAttributes:@{NSForegroundColorAttributeName:color} range:range]; self.label.attributedText = attribute; }
#import<AVFoundation> // 1.獲取音效資源的路徑 NSString *path = [[NSBundle mainBundle]pathForResource:@"pour_milk" ofType:@"wav"]; // 2.將路勁轉化爲url NSURL *tempUrl = [NSURL fileURLWithPath:path]; // 3.用轉化成的url建立一個播放器 NSError *error = nil; AVAudioPlayer *play = [[AVAudioPlayer alloc]initWithContentsOfURL:tempUrl error:&error]; self.player = play; // 4.播放 [play play];
- (BOOL)isIpadPro { UIScreen *Screen = [UIScreen mainScreen]; CGFloat width = Screen.nativeBounds.size.width/Screen.nativeScale; CGFloat height = Screen.nativeBounds.size.height/Screen.nativeScale; BOOL isIpad =[[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad; BOOL hasIPadProWidth = fabs(width - 1024.f) < DBL xss=removed xss=removed xss=removed xss=removed xss=removed xss=removed xss=removed xss=removed xss=removed>> ~/.lldbinit echo target stop-hook add -o \"target stop-hook disable\" >> ~/.lldbinit 下次從新運行項目,而後就不報錯了。
-(void)test{ NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:self.contentLabel.text]; NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init]; [paragraphStyle setLineSpacing:3]; //調整行間距 [attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [self.contentLabel.text length])]; self.contentLabel.attributedText = attributedString; }
@"UIViewContentModeScaleToFill", // 拉伸自適應填滿整個視圖 @"UIViewContentModeScaleAspectFit", // 自適應比例大小顯示 @"UIViewContentModeScaleAspectFill", // 原始大小顯示 @"UIViewContentModeRedraw", // 尺寸改變時重繪 @"UIViewContentModeCenter", // 中間 @"UIViewContentModeTop", // 頂部 @"UIViewContentModeBottom", // 底部 @"UIViewContentModeLeft", // 中間貼左 @"UIViewContentModeRight", // 中間貼右 @"UIViewContentModeTopLeft", // 貼左上 @"UIViewContentModeTopRight", // 貼右上 @"UIViewContentModeBottomLeft", // 貼左下 @"UIViewContentModeBottomRight", // 貼右下
#define BLOCK_EXEC(block, ...) if (block) { block(__VA_ARGS__); }; // 宏定義以前的用法 if (completionBlock) { completionBlock(arg1, arg2); } // 宏定義以後的用法 BLOCK_EXEC(completionBlock, arg1, arg2);
// 有時候咱們在xcode中打印中文,會打印出Unicode編碼,還須要本身去一些在線網站轉換,有了插件就方便多了。 DXXcodeConsoleUnicodePlugin 插件
[[UIApplication sharedApplication] setStatusBarHidden:NO]; [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];
// 可自動生成模型的代碼,省去寫模型代碼的時間 ESJsonFormat-for-Xcode
輕擊手勢(TapGestureRecognizer) 輕掃手勢(SwipeGestureRecognizer) 長按手勢(LongPressGestureRecognizer) 拖動手勢(PanGestureRecognizer) 捏合手勢(PinchGestureRecognizer) 旋轉手勢(RotationGestureRecognizer)
模擬器的位置: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs 文檔安裝位置: /Applications/Xcode.app/Contents/Developer/Documentation/DocSets 插件保存路徑: ~/Library/ApplicationSupport/Developer/Shared/Xcode/Plug-ins 自定義代碼段的保存路徑: ~/Library/Developer/Xcode/UserData/CodeSnippets/ 若是找不到CodeSnippets文件夾,能夠本身新建一個CodeSnippets文件夾。 證書路徑 ~/Library/MobileDevice/Provisioning Profiles
獲取家目錄路徑的函數 NSString *homeDir = NSHomeDirectory(); 獲取Documents目錄路徑的方法 NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *docDir = [paths objectAtIndex:0]; 獲取Documents目錄路徑的方法 NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES); NSString *cachesDir = [paths objectAtIndex:0]; 獲取tmp目錄路徑的方法: NSString *tmpDir = NSTemporaryDirectory();
去除全部的空格 [str stringByReplacingOccurrencesOfString:@" " withString:@""] 去除首尾的空格 [str stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]; - (NSString *)uppercaseString; 所有字符轉爲大寫字母 - (NSString *)lowercaseString 所有字符轉爲小寫字母
pod install --verbose --no-repo-update pod update --verbose --no-repo-update 若是不加後面的參數,默認會升級CocoaPods的spec倉庫,加一個參數能夠省略這一步,而後速度就會提高很多。
在XCode中targets的build phases選項下Compile Sources下選擇 不須要arc編譯的文件 雙擊輸入 -fno-objc-arc 便可 MRC工程中也可使用ARC的類,方法以下: 在XCode中targets的build phases選項下Compile Sources下選擇要使用arc編譯的文件 雙擊輸入 -fobjc-arc 便可
_mTableView.tintColor = [UIColor redColor];
tableView.separatorInset = UIEdgeInsetsMake(0, 100, 0, 0);
navigationController.hidesBarsOnSwipe = Yes
IQKeyboardManager https://github.com/hackiftekhar/IQKeyboardManager
圖形上下是一個CGContextRef類型的數據。 圖形上下文包含: 1,繪圖路徑(各類各樣圖形) 2,繪圖狀態(顏色,線寬,樣式,旋轉,縮放,平移) 3,輸出目標(繪製到什麼地方去?UIView、圖片) 1,獲取當前圖形上下文 CGContextRef ctx = UIGraphicsGetCurrentContext(); 2,添加線條 CGContextMoveToPoint(ctx, 20, 20); 3,渲染 CGContextStrokePath(ctx); CGContextFillPath(ctx); 4,關閉路徑 CGContextClosePath(ctx); 5,畫矩形 CGContextAddRect(ctx, CGRectMake(20, 20, 100, 120)); 6,設置線條顏色 [[UIColor redColor] setStroke]; 7, 設置線條寬度 CGContextSetLineWidth(ctx, 20); 8,設置頭尾樣式 CGContextSetLineCap(ctx, kCGLineCapSquare); 9,設置轉折點樣式 CGContextSetLineJoin(ctx, kCGLineJoinBevel); 10,畫圓 CGContextAddEllipseInRect(ctx, CGRectMake(30, 50, 100, 100)); 11,指定圓心 CGContextAddArc(ctx, 100, 100, 50, 0, M_PI * 2, 1); 12,獲取圖片上下文 UIGraphicsGetImageFromCurrentImageContext(); 13,保存圖形上下文 CGContextSaveGState(ctx) 14,恢復圖形上下文 CGContextRestoreGState(ctx)
// 1. 開啓一個與圖片相關的圖形上下文 UIGraphicsBeginImageContextWithOptions(self.view.bounds.size,NO,0.0); // 2. 獲取當前圖形上下文 CGContextRef ctx = UIGraphicsGetCurrentContext(); // 3. 獲取須要截取的view的layer [self.view.layer renderInContext:ctx]; // 4. 從當前上下文中獲取圖片 UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); // 5. 關閉圖形上下文 UIGraphicsEndImageContext(); // 6. 把圖片保存到相冊 UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);
第二種寫法javascript
/** *截圖功能 */ -(void)screenShot{ CGRect rect = self.view.frame; UIGraphicsBeginImageContext(rect.size); CGContextRef context = UIGraphicsGetCurrentContext(); [self.view.layer renderInContext:context]; UIImage *img = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); i = [[UIImageView alloc]initWithFrame:CGRectMake(20, 70, 300, 500)]; i.layer.borderColor = [UIColor redColor].CGColor; i.layer.borderWidth = 2; i.image = img; [self.view addSubview:i]; i.userInteractionEnabled = YES; //tap手勢 UITapGestureRecognizer *tapGesture=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(event:)]; [i addGestureRecognizer:tapGesture]; [tapGesture setNumberOfTapsRequired:1]; }
//Swift UIBarButtonItem.appearance().setBackButtonTitlePositionAdjustment(UIOffsetMake(0, -60), forBarMetrics: .Default) //OC [[UIBarButtonItem appearance] setBackButtonTitlePositionAdjustment:UIOffsetMake(0, -60) forBarMetrics:UIBarMetricsDefault];
-(void)viewDidLayoutSubviews{ if ([self.tableView respondsToSelector:@selector(setSeparatorInset:)]) { [self.tableView setSeparatorInset:UIEdgeInsetsMake(0,0,0,0)]; } if ([self.tableView respondsToSelector:@selector(setLayoutMargins:)]) { [self.tableView setLayoutMargins:UIEdgeInsetsMake(0,0,0,0)]; } } -(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{ if ([cell respondsToSelector:@selector(setSeparatorInset:)]) { [cell setSeparatorInset:UIEdgeInsetsZero]; } if ([cell respondsToSelector:@selector(setLayoutMargins:)]) { [cell setLayoutMargins:UIEdgeInsetsZero]; } }
//1.當咱們的手離開屏幕時候隱藏 - (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset { if(velocity.y > 0) { [self.navigationController setNavigationBarHidden:YES animated:YES]; } else { [self.navigationController setNavigationBarHidden:NO animated:YES]; } } velocity.y這個量,在上滑和下滑時,變化極小(小數),可是由於方向不一樣,有正負之分,這就很好處理了。
//2.在滑動過程當中隱藏 //像safari (1) self.navigationController.hidesBarsOnSwipe = YES; (2) - (void)scrollViewDidScroll:(UIScrollView *)scrollView { CGFloat offsetY = scrollView.contentOffset.y + __tableView.contentInset.top; CGFloat panTranslationY = [scrollView.panGestureRecognizer translationInView:self.tableView].y; if (offsetY > 64) { if (panTranslationY > 0) { //下滑趨勢,顯示 [self.navigationController setNavigationBarHidden:NO animated:YES]; } else { //上滑趨勢,隱藏 [self.navigationController setNavigationBarHidden:YES animated:YES]; } } else { [self.navigationController setNavigationBarHidden:NO animated:YES]; } } 這裏的offsetY > 64只是爲了在視圖滑過navigationBar的高度以後纔開始處理,防止影響展現效果。panTranslationY是scrollView的pan手勢的手指位置的y值,可能不是太好,由於panTranslationY這個值在較小幅度上下滑動時,可能都爲正或都爲負,這就使得這一方式不太靈敏.
效果圖php
1第一種方式css
//方法一:設置透明度 [[[self.navigationController.navigationBar subviews]objectAtIndex:0] setAlpha:0.1]; //方法二:設置背景圖片 /** * 設置導航欄,使其透明 * */ - (void)setNavigationBarColor:(UIColor *)color targetController:(UIViewController *)targetViewController{ //導航條的顏色 以及隱藏導航條的顏色targetViewController.navigationController.navigationBar.shadowImage = [[UIImage alloc]init]; CGRect rect=CGRectMake(0.0f, 0.0f, 1.0f, 1.0f); UIGraphicsBeginImageContext(rect.size); CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSetFillColorWithColor(context, [color CGColor]); CGContextFillRect(context, rect); UIImage *theImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); [targetViewController.navigationController.navigationBar setBackgroundImage:theImage forBarMetrics:UIBarMetricsDefault]; }
二、設置透明導航欄html
當即投資BG爲默認的導航欄 背景圖片 java
透明navbarBG 是一張純透明的png 圖片python
- (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; [self createNav]; } - (void)createNav { //替換導航欄透明 UINavigationBar *navigationBar = self.navigationController.navigationBar; [navigationBar setTitleTextAttributes:@{ NSForegroundColorAttributeName :[UIColor whiteColor] }]; //navigationBar.alpha = 0; [navigationBar setBackgroundImage:[UIImage imageNamed:@"透明navbarBG"] forBarMetrics:UIBarMetricsDefault]; [navigationBar setBackgroundImage:[UIImage imageNamed:@"透明navbarBG"] forBarMetrics:UIBarMetricsCompact]; //去黑線 [navigationBar setBackgroundImage:[UIImage imageNamed:@"透明navbarBG"] forBarPosition:UIBarPositionAny barMetrics:UIBarMetricsDefault]; [navigationBar setShadowImage:[UIImage new]]; } //退出頁面時候 恢復不透明 -(void)viewWillDisappear:(BOOL)animated { [super viewWillDisappear:animated]; [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"當即投資BG"] forBarMetrics:UIBarMetricsDefault]; [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"當即投資BG"] forBarMetrics:UIBarMetricsCompact]; } // 當滾動視圖滾動到最頂端後,執行該方法 //向上滾動時候不透明 - (void)scrollViewDidScroll:(UIScrollView *)scrollView{ // NSLog(@"scrollViewDidScroll"); CGPoint point=scrollView.contentOffset; if(point.y>5){ [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"當即投資BG"] forBarMetrics:UIBarMetricsDefault]; [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"當即投資BG"] forBarMetrics:UIBarMetricsCompact]; self.navigationController.navigationBar.barTintColor=[UIColor colorWithRed:243/255.0 green:90.0/255.0 blue:3.0/255.0 alpha:1.0]; }else{ UINavigationBar *navigationBar = self.navigationController.navigationBar; [navigationBar setTitleTextAttributes:@{ NSForegroundColorAttributeName :[UIColor whiteColor] }]; //navigationBar.alpha = 0; [navigationBar setBackgroundImage:[UIImage imageNamed:@"透明navbarBG"] forBarMetrics:UIBarMetricsDefault]; [navigationBar setBackgroundImage:[UIImage imageNamed:@"透明navbarBG"] forBarMetrics:UIBarMetricsCompact]; } // NSLog(@"%f,%f",point.x,point.y); // 從中能夠讀取contentOffset屬性以肯定其滾動到的位置。 // 注意:當ContentSize屬性小於Frame時,將不會出發滾動 }
//設置字體和行間距 UILabel * lable = [[UILabel alloc]initWithFrame:CGRectMake(50, 100, 300, 200)]; lable.text = @"你們好,我是Frank_chun,在這裏咱們一塊兒學習新的知識,總結咱們遇到的那些坑,共同的學習,共同的進步,共同的努力,只爲美好的明天!!!有問題一塊兒相互的探討--438637472!!!"; lable.numberOfLines = 0; lable.font = [UIFont systemFontOfSize:12]; lable.backgroundColor = [UIColor grayColor]; [self.view addSubview:lable]; //設置每一個字體之間的間距 //NSKernAttributeName 這個對象所對應的值是一個NSNumber對象(包含小數),做用是修改默認字體之間的距離調整,值爲0的話表示字距調整是禁用的; NSMutableAttributedString * str = [[NSMutableAttributedString alloc]initWithString:lable.text attributes:@{NSKernAttributeName:@(5.0)}]; //設置某寫字體的顏色 //NSForegroundColorAttributeName 設置字體顏色 NSRange blueRange = NSMakeRange([[str string] rangeOfString:@"Frank_chun"].location, [[str string] rangeOfString:@"Frank_chun"].length); [str addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:blueRange]; NSRange blueRange1 = NSMakeRange([[str string] rangeOfString:@"438637472"].location, [[str string] rangeOfString:@"438637472"].length); [str addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:blueRange1]; //設置每行之間的間距 //NSParagraphStyleAttributeName 設置段落的樣式 NSMutableParagraphStyle * par = [[NSMutableParagraphStyle alloc]init]; [par setLineSpacing:20]; //爲某一範圍內文字添加某個屬性 //NSMakeRange表示所要的範圍,從0到整個文本的長度 [str addAttribute:NSParagraphStyleAttributeName value:par range:NSMakeRange(0, lable.text.length)]; [lable setAttributedText:str];
效果圖git
//第一種方法 //點擊button倒計時 #import "ViewController.h" @interface ViewController () @property (nonatomic, strong) UIButton * timeButton; @property (nonatomic, strong) NSTimer * timer; @property (nonatomic, strong)UIButton * btn; @end@implementation ViewController { NSInteger _time; } - (void)viewDidLoad { [super viewDidLoad]; _time = 5; self.btn = [UIButton buttonWithType:UIButtonTypeCustom]; _btn.backgroundColor = [UIColor orangeColor]; [_btn setTitle:@"獲取驗證碼" forState:UIControlStateNormal]; _btn.titleLabel.font = [UIFont systemFontOfSize:15]; [_timeButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]; [_btn addTarget:self action:@selector(btnAction:) forControlEvents:UIControlEventTouchUpInside]; [self refreshButtonWidth]; [self.view addSubview:self.btn]; } - (void)refreshButtonWidth{ CGFloat width = 0; if (_btn.enabled){ width = 100; } else { width = 200; } _btn.center = CGPointMake(self.view.frame.size.width/2, 200); _btn.bounds = CGRectMake(0, 0, width, 40); //每次刷新,保證區域正確 [_btn setBackgroundImage:[self imageWithColor:[UIColor orangeColor] andSize:_btn.frame.size] forState:UIControlStateNormal]; [_btn setBackgroundImage:[self imageWithColor:[UIColor lightGrayColor] andSize:_btn.frame.size] forState:UIControlStateDisabled]; } - (UIImage *)imageWithColor:(UIColor *)color andSize:(CGSize)aSize{ CGRect rect = CGRectMake(0.0f, 0.0f, aSize.width, aSize.height); UIGraphicsBeginImageContext(rect.size); CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSetFillColorWithColor(context, [color CGColor]); CGContextFillRect(context, rect); UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return image; } - (void)btnAction:(UIButton *)sender{ sender.enabled = NO; [self refreshButtonWidth]; [sender setTitle:[NSString stringWithFormat:@"獲取驗證碼(%zi)", _time] forState:UIControlStateNormal]; _timer = [NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(timeDown) userInfo:nil repeats:YES]; } - (void)timeDown{ _time --; if (_time == 0) { [_btn setTitle:@"從新獲取" forState:UIControlStateNormal]; _btn.enabled = YES; [self refreshButtonWidth]; [_timer invalidate]; _timer = nil; _time = 5 ; return; } [_btn setTitle:[NSString stringWithFormat:@"獲取驗證碼(%zi)", _time] forState:UIControlStateNormal]; }
//第二種方法 #pragma mark -點擊發送驗證碼 - (void)sendMessage:(UIButton *)btn{ if (self.phoneField.text.length == 0) { [self remindMessage:@"請輸入正確的手機號"]; }else{ __block int timeout=60; //倒計時時間 dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); dispatch_source_t _timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0,queue); dispatch_source_set_timer(_timer,dispatch_walltime(NULL, 0),1.0*NSEC_PER_SEC, 0); //每秒執行 dispatch_source_set_event_handler(_timer, ^{ if(timeout<=0){ //倒計時結束,關閉 dispatch_source_cancel(_timer); dispatch_async(dispatch_get_main_queue(), ^{ // 設置界面的按鈕顯示 根據本身需求設置 [btn setTitle:@"發送驗證碼" forState:UIControlStateNormal]; btn.userInteractionEnabled = YES; }); }else{ int seconds = timeout % 60; NSString *strTime = [NSString stringWithFormat:@"%d", seconds]; if ([strTime isEqualToString:@"0"]) { strTime = [NSString stringWithFormat:@"%d",60]; } dispatch_async(dispatch_get_main_queue(), ^{ //設置界面的按鈕顯示 根據本身需求設置 //NSLog(@"____%@",strTime); [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:1]; [btn setTitle:[NSString stringWithFormat:@"%@秒後從新發送",strTime] forState:UIControlStateNormal]; [UIView commitAnimations]; btn.userInteractionEnabled = NO; }); timeout--; } }); dispatch_resume(_timer); }
效果圖github
textField.contentVerticalAlignment = UIControlContentVerticalAlignmentTop;
[button setExclusiveTouch:YES];
UIImage* img=[UIImage imageNamed:@"2.png"];//原圖 UIEdgeInsets edge=UIEdgeInsetsMake(0, 10, 0,10); //UIImageResizingModeStretch:拉伸模式,經過拉伸UIEdgeInsets指定的矩形區域來填充圖片 //UIImageResizingModeTile:平鋪模式,經過重複顯示UIEdgeInsets指定的矩形區域來填充圖 img= [img resizableImageWithCapInsets:edge resizingMode:UIImageResizingModeStretch]; self.imageView.image=img;
textField.placeholder = @"username is in here!"; [textField setValue:[UIColor redColor] forKeyPath:@"_placeholderLabel.textColor"]; [textField setValue:[UIFont boldSystemFontOfSize:16] forKeyPath:@"_placeholderLabel.font"];
只能設置兩種顏色,黑色和白色,系統默認黑色 設置爲白色方法: (1)在plist裏面添加Status bar style,值爲UIStatusBarStyleLightContent(白色)或UIStatusBarStyleDefault(黑 色) (2)在Info.plist中設置UIViewControllerBasedStatusBarAppearance 爲NO
[self.navigationController.navigationBar setBackgroundImage:[[UIImage alloc] init] forBarMetrics:UIBarMetricsDefault]; self.navigationController.navigationBar.shadowImage = [[UIImage alloc] init];
_pageControl.currentPageIndicatorTintColor=SFQRedColor; _pageControl.pageIndicatorTintColor=SFQGrayColor;
//有時候使用UITableView所實現的列表,會使用到section,可是又不但願它粘在最頂上而是跟隨滾動而消失或者出現 - (void)scrollViewDidScroll:(UIScrollView *)scrollView { if (scrollView == _tableView) { CGFloat sectionHeaderHeight = 36; 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); } } }
[UIView animateWithDuration:0.3 animations:^{ imageView.transform = CGAffineTransformMakeScale(2, 2); } completion:^(BOOL finished) { imageView.transform = CGAffineTransformMakeScale(1.0, 1.0); }];
//圖片轉字符串 -(NSString *)UIImageToBase64Str:(UIImage *) image { NSData *data = UIImageJPEGRepresentation(image, 1.0f); NSString *encodedImageStr = [data base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength]; return encodedImageStr; } //字符串轉圖片 -(UIImage *)Base64StrToUIImage:(NSString *)_encodedImageStr { NSData *_decodedImageData = [[NSData alloc] initWithBase64Encoding:_encodedImageStr]; UIImage *_decodedImage = [UIImage imageWithData:_decodedImageData]; return _decodedImage; }
-(BOOL)isChinese:(NSString *)str{ NSString *match=@"(^[\u4e00-\u9fa5]+$)"; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF matches %@", match]; return [predicate evaluateWithObject:str]; }
-(NSString *)dateToString:(NSDate *)date { // 初始化時間格式控制器 NSDateFormatter *matter = [[NSDateFormatter alloc] init]; // 設置設計格式 [matter setDateFormat:@"yyyy-MM-dd hh:mm:ss zzz"]; // 進行轉換 NSString *dateStr = [matter stringFromDate:date]; return dateStr; } -(NSDate *)stringToDate:(NSString *)dateStr { // 初始化時間格式控制器 NSDateFormatter *matter = [[NSDateFormatter alloc] init]; // 設置設計格式 [matter setDateFormat:@"yyyy-MM-dd hh:mm:ss zzz"]; // 進行轉換 NSDate *date = [matter dateFromString:dateStr]; return date; }
imageview.userInteractionEnabled = YES; //tap手勢 UITapGestureRecognizer *tapGesture=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(event:)]; [imageview addGestureRecognizer:tapGesture]; [tapGesture setNumberOfTapsRequired:1]; - (void)event:(UITapGestureRecognizer *)gesture { NSLog(@"單擊"); }
#pragma mark //獲取請求鏈接的cookies [manager POST:urlStr parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) { if (success) { success(responseObject); NSDictionary *fields = [operation.response allHeaderFields]; //afnetworking寫法 NSLog(@"fields = %@",[fields description]); // NSURL *url = [NSURL URLWithString:@"http://api.skyfox.org/api-test.php"]; NSURL *url = [NSURL URLWithString:urlStr]; //獲取cookie方法1 NSArray *cookies = [NSHTTPCookie cookiesWithResponseHeaderFields:fields forURL:url]; NSLog(@"11--%@",cookies); //獲取cookie方法2 //NSString *cookieString = [[HTTPResponse allHeaderFields] valueForKey:@"Set-Cookie"]; } } failure:^(AFHTTPRequestOperation *operation, NSError *error) { // NSLog(@"%@", error); if (fail) { fail(); } }];
imageView1 .transform=CGAffineTransformMakeRotation(M_PI_2);
#pragma mark //獲取字符串須要的寬度 +(CGFloat)ZFYtextWidthFromTextString:(NSString *)text fontSize:(CGFloat)size{ CGSize size1 = [text sizeWithAttributes:@{NSFontAttributeName: [UIFont systemFontOfSize:size]}]; //返回計算出的行高 return size1.width; }
#pragma mark//獲取字符串須要的高度 +(CGFloat)ZFYtextHeightFromTextString:(NSString *)text width:(CGFloat)textWidth fontSize:(CGFloat)size{ NSDictionary *dict = @{NSFontAttributeName:[UIFont systemFontOfSize:size]}; CGRect rect = [text boundingRectWithSize:CGSizeMake(textWidth, MAXFLOAT) options:NSStringDrawingTruncatesLastVisibleLine|NSStringDrawingUsesFontLeading|NSStringDrawingUsesLineFragmentOrigin attributes:dict context:nil]; //返回計算出的行高 return rect.size.height; }
#pragma mark//Unicode轉漢字 \u5f20\u4e09 → 張三 - (NSString *)replaceUnicode:(NSString *)unicodeStr { //張三 \u5f20\u4e09 NSString *tempStr1 = [unicodeStr stringByReplacingOccurrencesOfString:@"\\u" withString:@"\\U"]; NSString *tempStr2 = [tempStr1 stringByReplacingOccurrencesOfString:@"\"" withString:@"\\\""]; NSString *tempStr3 = [[@"\"" stringByAppendingString:tempStr2] stringByAppendingString:@"\""]; NSData *tempData = [tempStr3 dataUsingEncoding:NSUTF8StringEncoding]; NSString* returnStr = [NSPropertyListSerialization propertyListFromData:tempData mutabilityOption:NSPropertyListImmutable format:NULL errorDescription:NULL]; // NSLog(@"Output = %@", returnStr); return [returnStr stringByReplacingOccurrencesOfString:@"\\r\\n" withString:@"\n"]; } #pragma mark//漢字轉 Unicode 張三 → \u5f20\u4e09 -(NSString *) utf8ToUnicode:(NSString *)string{ NSUInteger length = [string length]; NSMutableString *s = [NSMutableString stringWithCapacity:0]; for (int i = 0;i < length; i++){ unichar _char = [string characterAtIndex:i]; //判斷是否爲英文和數字 if (_char <= '9' && _char >='0'){ [s appendFormat:@"%@",[string substringWithRange:NSMakeRange(i,1)]]; }else if(_char >='a' && _char <= 'z'){ [s appendFormat:@"%@",[string substringWithRange:NSMakeRange(i,1)]]; }else if(_char >='A' && _char <= 'Z') { [s appendFormat:@"%@",[string substringWithRange:NSMakeRange(i,1)]]; }else{ [s appendFormat:@"\\u%x",[string characterAtIndex:i]]; } } return s; }
#pragma mark //獲取相對時間 獲取兩個月前的時間 -2 爲兩個月前時間 2爲兩個月後時間 - (void)RelativeTime { NSDateComponents * components = [[NSDateComponents alloc] init]; components.month = -2; // components.day = 10; // components.hour = 10; NSCalendar * calendar = [NSCalendar currentCalendar]; NSDate * currentDate = [NSDate date]; NSDate * nextData = [calendar dateByAddingComponents:components toDate:currentDate options:NSCalendarMatchStrictly]; NSDateFormatter * formatter = [[NSDateFormatter alloc] init]; formatter.dateFormat = @"yyyy年MM月dd日HH時mm分ss秒"; NSString * str = [formatter stringFromDate:nextData]; NSLog(@"%@",str); }
#pragma mark 打印系統字體庫 名字 NSArray *familyNames = [UIFont familyNames]; for( NSString *familyName in familyNames ) { printf( "Family: %s \n", [familyName UTF8String]); NSArray *fontNames = [UIFont fontNamesForFamilyName:familyName]; for( NSString *fontName in fontNames ) { printf( "\tFont: %s \n", [fontName UTF8String] ); } }
//截取正方形的圖片 centerBool爲YES 表示從中心開始截取 +(UIImage*)getSubImage:(UIImage *)image mCGRect:(CGRect)mCGRect centerBool:(BOOL)centerBool{ /*如若centerBool爲Yes則是由中心點取mCGRect範圍的圖片*/ float imgWidth = image.size.width; float imgHeight = image.size.height; float viewWidth = mCGRect.size.width; float viewHidth = mCGRect.size.height; CGRect rect; if(centerBool) rect = CGRectMake((imgWidth-viewWidth)/2,(imgHeight-viewHidth)/2,viewWidth,viewHidth); else{ if(viewHidth<viewWidth) { if(imgWidth<= imgHeight) { rect=CGRectMake(0, 0,imgWidth, imgWidth*viewHidth/viewWidth); }else { float width = viewWidth*imgHeight/viewHidth; float x = (imgWidth - width)/2; if(x>0) { rect = CGRectMake(x,0, width, imgHeight); }else { rect = CGRectMake(0, 0, imgWidth, imgWidth*viewHidth/viewWidth); } } }else { if(imgWidth <= imgHeight) { float height = viewHidth*imgWidth/viewWidth; if(height< imgHeight) { rect =CGRectMake(0, 0, imgWidth, height); }else { rect = CGRectMake(0, 0,viewWidth*imgHeight/viewHidth, imgHeight); } }else { float width = viewWidth*imgHeight/viewHidth; if(width< imgWidth) { float x = (imgWidth - width)/2; rect =CGRectMake(x, 0,width, imgHeight); }else { rect =CGRectMake(0, 0,imgWidth, imgHeight); } } } } CGImageRef subImageRef = CGImageCreateWithImageInRect(image.CGImage,rect); CGRect smallBounds =CGRectMake(0, 0,CGImageGetWidth(subImageRef),CGImageGetHeight(subImageRef)); UIGraphicsBeginImageContext(smallBounds.size); CGContextRef context =UIGraphicsGetCurrentContext();CGContextDrawImage(context, smallBounds, subImageRef); UIImage *smallImage =[UIImage imageWithCGImage:subImageRef]; UIGraphicsEndImageContext(); return smallImage; }
//APPid就是上面的那串數字 NSString *urlStr = [NSString stringWithFormat:@"itms-apps://itunes.apple.com/app/id%@",APPID]; NSURL *url = [NSURLURLWithString:urlStr]; [[UIApplicationsharedApplication]openURL:url];
#pragma mark -- //獲取本地版本號 //獲取本地版本號 NSString* thisVersion = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleShortVersionString"];
#pragma mark -- 獲取appstore版本號 -(void)Postpath:(NSString *)path { NSString *url = [[NSString alloc] initWithFormat:@"http://itunes.apple.com/lookup?id=%@",@"414478124"]; NSURL *url = [NSURL URLWithString:path]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:10]; [request setHTTPMethod:@"POST"]; NSOperationQueue *queue = [NSOperationQueue new]; [NSURLConnection sendAsynchronousRequest:request queue:queue completionHandler:^(NSURLResponse *response,NSData *data,NSError *error){ NSMutableDictionary *receiveStatusDic=[[NSMutableDictionary alloc]init]; if (data) { NSDictionary *receiveDic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil]; if ([[receiveDic valueForKey:@"resultCount"] intValue]>0) { [receiveStatusDic setValue:@"1" forKey:@"status"]; [receiveStatusDic setValue:[[[receiveDic valueForKey:@"results"] objectAtIndex:0] valueForKey:@"version"] forKey:@"version"]; }else{ [receiveStatusDic setValue:@"-1" forKey:@"status"]; } }else{ [receiveStatusDic setValue:@"-1" forKey:@"status"]; } [self performSelectorOnMainThread:@selector(receiveData:) withObject:receiveStatusDic waitUntilDone:NO]; }]; } -(void)receiveData:(id)sender { NSLog(@"receiveData=%@",sender); //打印獲取到的版本號 }
//取消窗口第一響應 [[[UIApplication sharedApplication] keyWindow] endEditing:YES];
//css 控制 <head><style>img{width:100%% !important;}</style></head> //js 控制 - (void)webViewDidFinishLoad:(UIWebView *)webView { [webView stringByEvaluatingJavaScriptFromString: @"var script = document.createElement('script');" "script.type = 'text/javascript';" "script.text = /"function ResizeImages() { " "var myimg,oldwidth,oldheight;" "var maxwidth=320;"// 圖片寬度 "for(i=0;i maxwidth){" "myimg.width = maxwidth;" "}" "}" "}/";" "document.getElementsByTagName('head')[0].appendChild(script);"]; [webView stringByEvaluatingJavaScriptFromString:@"ResizeImages();"]; }
#pragma mark UITextField ----監聽 [timesField addTarget:self action:@selector(textFieldDidChange:) forControlEvents:UIControlEventEditingChanged]; // 監聽事件 監聽事件: // 監聽改變按鈕 - (void) textFieldDidChange:(UITextField*) textField { }
///設置push 以後返回按鈕的 字體 UIBarButtonItem *backbutton = [[UIBarButtonItem alloc]init]; backbutton.title = @""; self.navigationItem.backBarButtonItem = backbutton;
life.navigationItem.hidesBackButton = YES;
- (void)webViewDidFinishLoad:(UIWebView *)aWebView { CGRect frame = aWebView.frame; frame.size.height = 1; aWebView.frame = frame; CGSize fittingSize = [aWebView sizeThatFits:CGSizeZero]; frame.size = fittingSize; aWebView.frame = frame; NSLog(@"size: %f, %f", fittingSize.width, fittingSize.height); }
#pragma mark //設置 陰影 [[self.calendarView layer] setShadowOffset:CGSizeMake(0, 0)]; [[self.calendarView layer] setShadowRadius:3]; [[self.calendarView layer] setShadowOpacity:0.4] ; [[self.calendarView layer] setShadowColor:[UIColor blackColor].CGColor];
#pragma mark 鍵盤監聽 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWasShown:) name:UIKeyboardWillShowNotification object:nil]; //註冊鍵盤消失的通知 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillBeHidden:) name:UIKeyboardWillHideNotification object:nil]; - (void)keyboardWasShown:(NSNotification*)aNotification { //鍵盤高度 NSDictionary *userInfo = [aNotification userInfo]; //NSLog(@"%@",userInfo); NSValue *aValue = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey]; CGRect keyboardRect = [aValue CGRectValue]; NSInteger height = keyboardRect.size.height; CGFloat time = [[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] floatValue]; } -(void)keyboardWillBeHidden:(NSNotification*)aNotification { }
#pragma mark //禁止微webview 上下拖動 UIWebView * d_intro = [[UIWebView alloc] init]; d_intro.delegate = self; d_intro.dataDetectorTypes = UIDataDetectorTypeLink; //取消右側,下側滾動條,去處上下滾動邊界的黑色背景 d_intro.backgroundColor=[UIColor clearColor]; for (UIView *_aView in [d_intro subviews]) { if ([_aView isKindOfClass:[UIScrollView class]]) { [(UIScrollView *)_aView setShowsVerticalScrollIndicator:NO]; //右側的滾動條 [(UIScrollView *)_aView setShowsHorizontalScrollIndicator:NO]; //下側的滾動條 for (UIView *_inScrollview in _aView.subviews) { if ([_inScrollview isKindOfClass:[UIImageView class]]) { _inScrollview.hidden = YES; //上下滾動出邊界時的黑色的圖片 } } } } [self.view addSubview:d_intro];
#pragma mark 圖片保存沙盒 - (void)setHeadBgImage { BOOL success; NSFileManager *fileManager = [NSFileManager defaultManager]; //NSError *error; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths firstObject]; NSString *imageFilePath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"selfPhoto%d.jpg", [LoginManager sharedManager].userBasicInfo.uid]]; success = [fileManager fileExistsAtPath:imageFilePath]; UIImage *image1 = nil; if ([LoginManager sharedManager].loginSucess) { if (success) { NSData *data = [fileManager contentsAtPath:imageFilePath]; image1 = [UIImage imageWithData:data]; } }else{ image1 = [UIImage imageNamed:@"account_head_bg"]; } // NSLog(@"%@-%u",imageFilePath,success); [self setHeadBGImage:image1]; } - (void)saveImage:(UIImage *)image { BOOL success; NSFileManager *fileManager = [NSFileManager defaultManager]; NSError *error; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths firstObject]; NSString *imageFilePath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"selfPhoto%d.jpg", [LoginManager sharedManager].userBasicInfo.uid]]; success = [fileManager fileExistsAtPath:imageFilePath]; if (success) { success = [fileManager removeItemAtPath:imageFilePath error:&error]; } BOOL result = [UIImagePNGRepresentation(image)writeToFile: imageFilePath atomically:YES]; // 保存成功會返回YES //UIImage *smallImage = [self thumbnailWithImageWithoutScale:image size:CGSizeMake(self.view.frame.size.width, 315)]; NSLog(@"%@-%u",imageFilePath,result); [self setHeadBGImage:image]; }
#pragma mark //旋轉360 度 動畫 -(void) startAnimation { [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:0.01]; [UIView setAnimationDelegate:self]; [UIView setAnimationDidStopSelector:@selector(endAnimation)]; _rechargeCover.transform = CGAffineTransformMakeRotation(angle * (M_PI / 180.0f)); NSLog(@"%f",angle * (M_PI / 180.0f)); [UIView commitAnimations]; } -(void)endAnimation { angle += 10; if (angle < 360) { [self startAnimation]; } }
#define DeviceMaxHeight ([UIScreen mainScreen].bounds.size.height) #define DeviceMaxWidth ([UIScreen mainScreen].bounds.size.width) #define widthRate DeviceMaxWidth/320 #define IOS8 ([[UIDevice currentDevice].systemVersion intValue] >= 8 ? YES : NO) // RGB顏色 #define UIColorFromRGB1(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0] #define UIColorFromRGB(rgbValue) [UIColor colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 green:((float)((rgbValue & 0xFF00) >> 8))/255.0 blue:((float)(rgbValue & 0xFF))/255.0 alpha:1.0]
UIStoryboard *login = [UIStoryboard storyboardWithName:@"LoginModule" bundle:nil]; AlsNoticeController* alsNoticeController = [login instantiateViewControllerWithIdentifier:@"LoginVC"]; [self.navigationController pushViewController:alsNoticeController animated:YES];
#pragma mark //設置覆蓋層視圖 if (![[NSUserDefaults standardUserDefaults] boolForKey:@"guideFirst"]) { _guideCoverView =[[UIView alloc]initWithFrame:self.view.bounds]; _guideCoverView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.6]; UIWindow* currentWindow = [UIApplication sharedApplication].keyWindow; [currentWindow addSubview:_guideCoverView]; }
#pragma mark 視圖透明度 不影響子視圖 alterView.backgroundColor=[[UIColor whiteColor] colorWithAlphaComponent:1];
#pragma mark 複製到系統剪切版 UIPasteboard *pasteboard = [UIPasteboard generalPasteboard]; pasteboard.string = self.label.text;
#pragma mark cocosPods指令 pod install --verbose --no-repo-update pod list 列出全部可用的第三方庫 pod search query 搜包含query的第三方庫 注意:這兩個命令只搜存在於本地 /Users/yohunl/.cocoapods/ 下的文件 若是搜索網絡的,能夠先更新本地 pod repo update master,而後再搜索 pod lib create frameworkName 建立一個framework工程 pod lib lint 驗證一個podspec文件是否有錯誤 podinstall --no-repo-update錯誤 這裏的參數—no-repo-update,是告訴cocoapods不要更新repo.有麼有感受每次pod install都很慢,那是由於每一次都會先更新本地的repo,加上此參數,就跳過了這個過程,將會很快 pod init 能夠創建一個空的podfile 創建pod的spec文件 pod spec create spec名字 http://www.theonlylars.com/blog/2013/01/20/cocoapods-creating-a-pod-spec/ pod install 命令時會引起許多操做。要想深刻了解這個命令執行的詳細內容,能夠在這個命令後面加上 --verbose
90、背景圖片按照某個像素拉伸web
self.messageImage.image = [[UIImage imageNamed:@"bbs_meaasge_frame"] stretchableImageWithLeftCapWidth:150 topCapHeight:20];