技巧1：UIButton圖片與文字默認(rèn)是左右排列，如何實(shí)現(xiàn)右左排列？
解決技巧：

button.transform = CGAffineTransformMakeScale(-1.0, 1.0);
button.titleLabel.transform = CGAffineTransformMakeScale(-1.0, 1.0);
button.imageView.transform = CGAffineTransformMakeScale(-1.0, 1.0);

效果.png

技巧2：設(shè)置導(dǎo)航欄透明，title與BarButtonItem不透明

[self.navigationController.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];

self.navigationController.navigationBar.translucent = YES;

導(dǎo)航欄透明效果.png

技巧3：設(shè)置導(dǎo)航欄無邊框

self.navigationController.navigationBar.shadowImage = [UIImage new];

導(dǎo)航欄透明無邊框效果.png

技巧4: 隨視圖的滾動(dòng)導(dǎo)航欄隱藏與顯示（一句代碼即可）

self.navigationController.hidesBarsOnSwipe = Yes;

導(dǎo)航欄隱藏與顯示.gif

技巧5：簡(jiǎn)單好用的獲取當(dāng)前時(shí)間戳

   //時(shí)間戳
   time_t now;
   time(&now);
   NSLog(@"---%ld",now);

打印結(jié)果.png

技巧6：只設(shè)置UIView的左上角和右上角的圓角 (四個(gè)圓角位置都可以選擇)

 UIView *blueView = [[UIView alloc] initWithFrame:CGRectMake(100, 100, 200, 100)];
 blueView.backgroundColor = [UIColor blueColor];
 [self.view addSubview: blueView];  
    /*設(shè)置圓角位置的枚舉參數(shù)
     UIRectCornerTopLeft     = 1 << 0,
     UIRectCornerTopRight    = 1 << 1,
     UIRectCornerBottomLeft  = 1 << 2,
     UIRectCornerBottomRight = 1 << 3,
     UIRectCornerAllCorners  = ~0UL
     */
 UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:blueView.bounds byRoundingCorners:(UIRectCornerTopLeft|UIRectCornerTopRight) cornerRadii:CGSizeMake(20.0, 20.0)];
 CAShapeLayer *maskLayer = [CAShapeLayer layer];
 maskLayer.frame = blueView.bounds;
 maskLayer.path = maskPath.CGPath;
 blueView.layer.mask = maskLayer;

效果圖.png

技巧7: 加載UIWebView后禁止用戶復(fù)制剪切

// 控制器實(shí)現(xiàn)此方法
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender
{
    if (action == @selector(copy:) ||
        action == @selector(paste:)||
        action == @selector(cut:))
    {
        return NO;
    }
    return [super canPerformAction:action withSender:sender];
}

技巧8：跳轉(zhuǎn)控制器隱藏tabbar一個(gè)一勞永逸的方法

// 創(chuàng)建一個(gè)Nav基類 重寫pushViewController:方法 如下：
-(void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated {
    
    viewController.hidesBottomBarWhenPushed = YES;
    
    [super pushViewController:viewController animated:animated];
    
}