山寨QQ音乐的布局（一）

学了两天IOS趁着还没忘光，巩固一下所学知识想做点东西，由于自己的设计能力有限，所以就山寨一下吧，说到山寨怎么能忘了腾讯呢，今天发现QQ音乐的设计风格是扁平化的，小清新风格，所以就山寨一下它吧。。

由于本屌没有IPhone手机只能用Ipad运行iphone应用看看QQ音乐的效果，我的ipad是ios7的不知道QQ音乐是不是在IOS6上也是这种风格（想来肯定是的，腾讯的设计能力还是挺厉害的，山寨也是需要实力的不是）。

下面来真格的。。。。

---

首先是层次，据我观察是一个UITabBarController下面包含四个UINavigationController，每个UINavigationController下面包含UITableViewController（我也不知道对不对，反正我就这么做了）

接下来我们建立一个空的Project新建一个类继承自UITabBarController，这里我就叫RootViewController，然后再Window的代理类中将window的根控制器设置为我们新建的rootViewController，

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
 {
     self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
     // Override point for customization after application launch.
     self.window.backgroundColor = [UIColor whiteColor];

     RootViewController *rootViewController = [[RootViewController alloc] init];
     [self.window setRootViewController:rootViewController]; //设置跟控制器为我们新建的RootViewController,其实就是设置为UITabBarController

     [self.window makeKeyAndVisible];
     return YES;
 }

然后就是在UITabBarController中设置四个UINavigationController主要实现代码如下

     //设置UItabBar的高度为50
     self.tabBar.frame = CGRectMake(, CGRectGetHeight([[UIScreen mainScreen] bounds]) - , CGRectGetWidth([[UIScreen mainScreen] bounds]), );

     if (IOS_7) {
         [[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: [UIColor whiteColor], UITextAttributeTextColor, [UIFont fontWithName:@"Arial" size:0.0], UITextAttributeFont,nil] forState:UIControlStateHighlighted]; //设置UITabBarItem高亮时title的颜色为白色
     }
     else{
         [[UITabBar appearance] setBackgroundImage:[UIImage imageWithColor:[UIColor whiteColor] size:CGSizeMake(, )]]; //使用纯色图片填充IOS默认的UITabBar
         [[UITabBar appearance] setSelectionIndicatorImage:[UIImage new]];//去掉IOS6选中时的高光效果
         //设置IOS6的UINagitationBar的颜色为白色
         [[UINavigationBar appearance] setBackgroundImage:[UIImage imageWithColor:[UIColor whiteColor] size:CGSizeMake(, )] forBarMetrics:UIBarMetricsDefault];
     }

     //Universal
     //设置IOS6和IOS7的UINavigationBar上的字体统一为黑色
     [[UINavigationBar appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: [UIColor blackColor], UITextAttributeTextColor, [UIFont fontWithName:@"Arial" size: ], UITextAttributeFont, [UIFont boldSystemFontOfSize:], NSFontAttributeName, [NSValue valueWithUIOffset:UIOffsetZero], UITextAttributeTextShadowOffset, nil]];

     //我的音乐
     MyMusicViewController *myMusicView = [[MyMusicViewController alloc] init];
     UINavigationController *myMusicNavigation = [[UINavigationController alloc] initWithRootViewController:myMusicView];
     myMusicNavigation.tabBarItem = [UITabBarItem initCustomWithImage:@"mymusic" withSelectedImage:@"mymusicSelected" withTitle:@"我的音乐"];

     //音乐馆
     MusicHallViewController *musicHallView = [[MusicHallViewController alloc] init];
     UINavigationController *musicHallNavigation = [[UINavigationController alloc] initWithRootViewController:musicHallView];
     musicHallNavigation.tabBarItem = [UITabBarItem initCustomWithImage:@"musicHall" withSelectedImage:@"musicHallSelected" withTitle:@"音乐馆"];

     //发现
     FinderViewController *finderView = [[FinderViewController alloc] init];
     UINavigationController *finderNavigation = [[UINavigationController alloc] initWithRootViewController:finderView];
     finderNavigation.tabBarItem = [UITabBarItem initCustomWithImage:@"finder" withSelectedImage:@"finderSelected" withTitle:@"发现"];

     //更多
     MoreViewController *moreView = [[MoreViewController alloc] init];
     UINavigationController * moreNavigation = [[UINavigationController alloc] initWithRootViewController:moreView];
     moreNavigation.tabBarItem = [UITabBarItem initCustomWithImage:@"more" withSelectedImage:@"moreSelected" withTitle:@"更多"];

     NSArray *viewControllers = [NSArray arrayWithObjects:myMusicNavigation, musicHallNavigation, finderNavigation, moreNavigation, nil];
     [self setViewControllers:viewControllers];

代码中的IOS_7是一个宏定义

 #define IOS_7 ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0)

创建UITabBarItem的方法我写在了一个Category中定义了一个类方法

 + (UITabBarItem *) initCustomWithImage:(NSString *)image withSelectedImage:(NSString *)selectedImage withTitle:(NSString *)title
 {
     UIEdgeInsets insets = UIEdgeInsetsMake(, , -, ); //UITabBarItem的偏移量 上左下右
     UIImage *myImage = [UIImage imageNamed:image];
     UIImage *myImageSelected = [UIImage imageNamed:selectedImage];
     UITabBarItem *myTabBarItem = [[UITabBarItem alloc] init];
     myTabBarItem.imageInsets = insets;
     myTabBarItem.title = title;
     if (IOS_7) {
         myTabBarItem.image = [myImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
         myTabBarItem.selectedImage = [myImageSelected imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
     }
     else
     {
         [myTabBarItem setFinishedSelectedImage:myImageSelected withFinishedUnselectedImage:myImage];
     }
     return myTabBarItem;
 }

为了在IOS6和IOS7中都是用同样的扁平化风格，需要对IOS6作特别的设置，需要将UINavigationBar和UIBabBar的背景用纯色图片填充，title的字体样式也要设置为统一风格，具体的一下做法可以参考如下博客

http://esoftmobile.com/2014/01/14/build-ios6-ios7-apps/

由于初学 水平有限 刚开了个头 写了个初步布局 先到这里 还有一些问题没有解决 来张图片

 

虽然IOS6和IOS7是初步统一了样式，但是官方的我的音乐是在左边的，不知道怎么弄过去了。。。，请高人赐教。。。