IOS开发，从应用跳转到用浏览器打开网页：
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://www.oatos.com/bbs/"]];
用一个Button覆盖整个cell，加入动作
cell.accessoryType = UITableViewCellAccessoryNone;
UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(0.0, 0.0, cell.contentView.frame.size.width, 54.0)];
btn.autoresizingMask = UIViewAutoresizingFlexibleWidth;
btn.backgroundColor = COLOR(243.0, 89.0, 31.0, 1.0);
btn.tag = 1003;
NSString *title = nil;
#ifndef appstore
title = NSLocalizedString(@"Pad_setting_exitBtnTitle", nil);
#else
title = NSLocalizedString(@"Pad_setting_logoutBtnTitle", nil);
#endif
[btn setBackgroundImage:[UIImage imageNamed:@"bgBtnLogoutNormal.png"] forState:UIControlStateNormal];
[btn setBackgroundImage:[UIImage imageNamed:@"bgBtnLogoutHover.png"] forState:UIControlStateHighlighted];
[btn setTitle:title forState:UIControlStateNormal];
btn.titleLabel.font = [UIFont boldSystemFontOfSize:20.0];
[btn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[btn addTarget:self action:@selector(loginOuBtnClicked:) forControlEvents:UIControlEventTouchUpInside];
[cell.contentView addSubview:btn];
cell.selectionStyle = UITableViewCellSelectionStyleNone;经常使用的宏定义
#define IOS_VERSION [[UIDevice currentDevice] deviceVersion] #define kDeviceAgent [[UIDevice currentDevice] deviceAgent] #define IsiOS7Later !(IOS_VERSION < 7.0) #define Is4Inch [OatosUtils is4InchScreen]
#define COLOR(R,G,B,A) [UIColor colorWithRed:R/255.0 green:G/255.0 blue:B/255.0 alpha:A] #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]
#define Size(w, h) CGSizeMake(w, h) #define Point(x, y) CGPointMake(x, y) #define Rect(x, y, w, h) CGRectMake(x, y, w, h) #define ViewWidth(v) v.frame.size.width #define ViewHeight(v) (IsiOS7Later ? v.frame.size.height : v.frame.size.height - StatusBarHeight) #define ViewX(v) v.frame.origin.x #define ViewY(v) v.frame.origin.y #define ViewRect(v) Rect(ViewX(v), ViewY(v), ViewWidth(v), ViewHeight(v)) #define SelfViewHeight self.view.bounds.size.height
#define kDeviceScreenH [[UIScreen mainScreen] bounds].size.height #define kDeviceScreenW [[UIScreen mainScreen] bounds].size.width #define kAppMainScreenFrameWidth [[UIScreen mainScreen] applicationFrame].size.width #define kAppMainScreenFrameHeight [[UIScreen mainScreen] applicationFrame].size.height
#define StatusBarHeight [UIApplication sharedApplication].statusBarFrame.size.height #define kHeightStatusAndNav (IsiOS7Later ?64 : 44) // 状态栏和导航栏的总高度 #define kPadHeightNavForPopView 44 //3.4版本号后開始使用的，重构后机制不一样(跟弹出层布局相关) #define kStatusBarFix (IsiOS7Later ? 20 : 0) // 状态栏高度 #define kPadHeightStatusAndNav (IsiOS7Later ? 64 : 0) // 状态栏和导航栏的总高度 #define kPadNaviBarHeight (IsiOS7Later ?
54.0f : 0) // pad不含状态栏的导航栏的高度 #define kPadBottomBarHeight 60.0f #define kPadHeightNav (IsiOS7Later ? 44 : 0)
小结：代码中，尽量不要用写死的数据，不然版本号适配以及以后的优化是非常痛苦的事情。
还实用宏定义能够简化代码。眼下我的理解仅仅有这么多。希望以后对这个掌握的更好。尽管这仅仅是小基础。可是也是一种良好的编程习惯。一个好的開始。