技巧1：UIButton圖片與文字默認(rèn)是左右排列，如何實(shí)現(xiàn)右左排列锦援？
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)航欄透明勋桶，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];
}
