iOS 启动页
两种方式，一种是使用系统自带的，按规则定义启动图片名称即可，显示为1秒，要想延长时间，用［nsthread
sleepForTimeInterval:5.0］,另一种就是自定义uiivew, 加到window中去。或者自定义一个UIViewController。
1系统自带方式
1.1 添加图片
1，准备图片资源，放入工程中，即可，默认时间为1s
iOS设备现在有三种不同的分辨率：iPhone 320x480、iPhone 4 640x960、iPad 768x1024。以前程序的启动画面(图片)只要准备一个Default.png就可以了，但是现在变得复杂多了。下面就是CocoaChina会员做得总结
如果一个程序，既支持iPhone又支持iPad，那么它需要包含下面几个图片：
Default-Portrait.png iPad专用竖向启动画面768x1024或者768x1004
Default-Landscape.png iPad专用横向启动画面1024x768或者1024x748
Default-PortraitUpsideDown.png iPad专用竖向启动画面(Home按钮在屏幕上面)，可省略768x1024或者768x1004
Default-LandscapeLeft.png iPad专用横向启动画面，可省略1024x768或者1024x748
Default-LandscapeRight.png iPad专用横向启动画面，可省略1024x768或者1024x748
Default.png iPhone默认启动图片，如果没有提供上面几个iPad专用启动图片，则在iPad上运行时也使用Default.png（不推荐）320x480或者320x460
Default@2x.png iPhone4启动图片640x960或者640x920
为了在iPad上使用上述的启动画面，你还需要在info.plist中加入key: UISupportedInterfaceOrientations。同时，加入值UIInterfaceOrientationPortrait, UIInterfacOrientationPortraitUpsideDown, UIInterfaceOrientationLandscapeLeft, UIInterfaceOrientationLandscapeRight。
1.2延迟时间
2，如果想想设启动画面的显示时间，
在XXXAppDelegate.m的- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions方法中插入以下一行代码:
// Insert delay of 5 seconds befor the splash screen disappers.
[NSThread sleepForTimeInterval:5.0]; //其实这一行代码也可以不加，因为默认情况下欢迎界面的时间只有一秒，加这一句是为了延长
欢迎界面的展示时间到5秒，时间大家可以自己定义。
1.3启动时显示状态栏
•在-info.plist文件中加入选项"Status bar is initially
hidden",值为YES
在AppDelegate.m文件中的- (BOOL)application:(UIApplication
*)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions方法内加入代码：[[UIApplication sharedApplication] setStatusBarHidden:NO];
【注意】
如果你的程序同时使用了导航栏作为根视图控制器UINavigationController，则应该将语句[[UIApplication sharedApplication] setStatusBarHidden:NO]放在[self.window makeKeyAndVisible];之前，否则会出现状态栏与导航栏重叠的情况。可能是因为调用makeKeyAndVisible时会去判断当前程序是否显示状态栏，以此来布导航栏的位置。
2自定义方法
3，在XXXAppDelegate.m的- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions中通过使用uiview或uiimageview等控件自定义启动画面
3App图标添加
The app icon set named "AppIcon" did not have anyapplicable content.
Solution:
icon 的大小注意长宽一样，不然报错：The app icon set named "AppIcon" did not have anyapplicable content.
http://www.cnblogs.com/xuzhong/p/3775975.html
4引导页开发
4.1UIScrollview+UIImageView方案
我们在第一次打开App的时候，通常不是直接进入App主界面，而是会有一个能左右滑动、介绍App功能的界面。我是用NSUserDefaults + UIScrollview实现。
新建一个类，继承UIView，假设名为Guide。在initWithFrame方法里:
CGFloat screenHeight = [UIScreenmainScreen].bounds.size.height;
UIScrollView* scrollView =[[UIScrollView alloc] initWithFrame:frame];
scrollView.backgroundColor =[UIColor whiteColor];
scrollView.showsHorizontalScrollIndicator = NO;
scrollView.showsVerticalScrollIndicator = NO;
scrollView.contentSize =CGSizeMake(320*4, screenHeight);
scrollView.pagingEnabled = YES;
for (int i=0; i<4; i++) {
UIImageView* imageView =[[UIImageView alloc initWithFrame:CGRectMake(i*320, 0, 320, screenHeight)];
imageView.contentMode =UIViewContentModeScaleAspectFill;
NSString *filePath = [[NSBundlemainBundle] pathForResource:
[NSStringstringWithFormat:@"FileName"
ofType:@"FileType"];
imageView.image = [UIImageimageWithContentsOfFile:filePath];
[scrollView addSubview:imageView];
if (i == 3) {
UIButton* start = [UIButtonbuttonWithType:UIButtonTypeCustom];
start.frame = CGRectMake(0,0,100,44);
start.layer.cornerRadius =5;
start.layer.borderWidth =0.5;
[start setCenter:CGPointMake(1120, iPhone5?450:400)];
[start setTitleColor:[UIColorgrayColor] forState:UIControlStateNormal];
[start addTarget:selfaction:@selector(closeView) forControlEvents:UIControlEventTouchUpInside];
[start setTitle:@"Start"forState:UIControlStateNormal];
[scrollView addSubview:start];
}
这样，就有了一个有4张图片的引导页。
怎么去判断是不是第一次登陆呢，需要用到NSUserDefaults类。
在didFinishLaunchingWithOptions:函数中可以这样判断：
NSUserDefaults* userDefaults = [NSUserDefaults standardUserDefaults];
if([userDefaults objectForKey:@"FirstLoad"] == nil) {
[userDefaults setBool:NO forKey:@"FirstLoad"];
//显示引导页
}
4.2UIScrollview+UIPageControl
ios用户引导页
http://blog.csdn.net/wanglj7525/article/details/43408809
http://www.open-open.com/lib/view/open1411201907593.html
http://blog.csdn.net/yesjava/article/details/7894663
@interface WelcomeViewController ()
@end
@implementation WelcomeViewController
- (void)viewDidLoad {
[super viewDidLoad];
[self setupScrollView];
[self setupPageControl];
}
//创建程序第一次加载要显示的视图
- (void)setupScrollView
{
CGRect r = [[UIScreen mainScreen] applicationFrame];
UIScrollView *scrollView = [[UIScrollView alloc]initWithFrame:[UIScreen mainScreen].bounds];
scrollView.delegate =self;
[self.view addSubview:scrollView];
//关闭水平方向上的滚动条
scrollView.showsHorizontalScrollIndicator =NO;
//是否可以整屏滑动
scrollView.pagingEnabled =YES;
scrollView.tag =200;
scrollView.contentSize =CGSizeMake(r.size.width *3, [UIScreen mainScreen].bounds.size.height);
for (int i = 0; i < 3; i++) {
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(r.size.width * i,0,r.size.width, [UIScreen mainScreen].bounds.size.height)];
imageView.image = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle]pathForResource:[NSString stringWithFormat:@"t%d_full", i +1]ofType:@"jpg"]];
[scrollView addSubview:imageView];
}
UIButton *button=[UIButton buttonWithType:UIButtonTypeCustom];
button.backgroundColor=[UIColor darkGrayColor];
[button setTitle:@"开始体验" forState:UIControlStateNormal];
button.frame=CGRectMake(r.size.width*2+r.size.width/2-50, [UIScreen mainScreen].bounds.size.height -80, 100, 30);
[button addTarget:self action:@selector(showDocList) forControlEvents:UIControlEventTouchUpInside];
[button setImage:[UIImage imageNamed:@"start.png"] forState:UIControlStateNormal];
button.imageEdgeInsets=UIEdgeInsetsMake(0, 80, 0, 0);
button.titleEdgeInsets=UIEdgeInsetsMake(0, -40, 0, 20);
[scrollView addSubview:button];
}
//跳转到主页面
-(void)showDocList{
ScrollerViewController *mainList=[self.storyboard instantiateViewControllerWithIdentifier:@"mainNavigation"];
[self presentViewController:mainList animated:NO completion:nil];
}
- (void)setupPageControl
{
UIPageControl *pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(0, [UIScreen mainScreen].bounds.size.height -40, [UIScreen mainScreen].bounds.size.width, 20)];
pageControl.tag =100;
//设置表示的页数
pageControl.numberOfPages =3;
//设置选中的页数
pageControl.currentPage =0;
//设置未选中点的颜色
pageControl.pageIndicatorTintColor = [UIColor whiteColor];
//设置选中点的颜色
pageControl.currentPageIndicatorTintColor = [UIColor orangeColor];
//添加响应事件
[pageControl addTarget:self action:@selector(handlePageControl:)forControlEvents:UIControlEventValueChanged];
[self.view addSubview:pageControl];
}
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
UIPageControl *pagControl = (UIPageControl *)[self.view viewWithTag:100];
pagControl.currentPage = scrollView.contentOffset.x / [UIScreen mainScreen].bounds.size.width;
}
- (void)handlePageControl:(UIPageControl *)pageControl
{
//切换pageControl .对应切换scrollView不同的界面
UIScrollView *scrollView = (UIScrollView *)[self.view viewWithTag:200];
//
[scrollView setContentOffset:CGPointMake(320 * pageControl.currentPage,0)animated:YES];
}
4.3第三方库MYBlurIntroductionView方案
4.3.1设计思路
新建一个LaunchVC，然后在RootVC中以模态窗口的方式弹出此VC。引导页采用本地缓存方式，支持从服务端动态加载然后更新显示。
4.3.2LaunchVC弹出逻辑
LaunchVC弹出逻辑（注意只加载一次）：
if(![MDUtilityhasLoadLaunchView]) {
_launchVC= [[MDLaunchViewControlleralloc]init];
[self.navigationControllerpresentViewController:_launchVCanimated:NOcompletion:nil];
}
4.3.3LaunchVC初始化逻辑
LaunchVC初始化逻辑：
- (void)viewDidLoad {
[superviewDidLoad];
[selfinitSubViews];
// Do
any additional setup after loading the view.
}
-(void) initSubViews
{
if(!_introductView) {
[selfinitIntroductView];
}
}
-(void)initIntroductView
{
NSArray*launchImgFileArr = [MDUtilitygetLaunchImgFilePathArr];
if([launchImgFileArrcount] <=0) {
return;
}
//动态加载引导页图片
NSMutableArray*panelMArr = [[NSMutableArrayalloc]init];
for(NSString*imgFileinlaunchImgFileArr) {
//Create Stock Panel With Image
//MYIntroductionPanel*launchView = [[MYIntroductionPanel alloc] initWithFrame:CGRectMake(0, 0,self.view.frame.size.width, self.view.frame.size.height) title:nildescription:nil image:[UIImage imageWithContentsOfFile:imgFile]];
MDLaunchView*launchView = [[MDLaunchViewalloc]initWithFrame:CGRectMake(0,0,self.view.frame.size.width,self.view.frame.size.height)WithbackImg:[UIImageimageWithContentsOfFile:imgFile]];
[panelMArraddObject:launchView];
}
//Create
the introduction view and set its delegate
MYBlurIntroductionView*introductionView = [[MYBlurIntroductionViewalloc]initWithFrame:CGRectMake(0,0,self.view.frame.size.width,self.view.frame.size.height)];
introductionView.delegate=self;
//introductionView.BackgroundImageView =[UIImage imageNamed:@"Toronto, ON.jpg"];
//introductionView.LanguageDirection
= MYLanguageDirectionRightToLeft;
_introductView= introductionView;
//Build
the introduction with desired panels
[introductionViewbuildIntroductionWithPanels:panelMArr];
//Add
the introduction to your view
[self.viewaddSubview:introductionView];
}
4.3.4本地缓存引导图片逻辑
+(BOOL)hasLoadLaunchView
{
BOOLloaded = [[[NSUserDefaultsstandardUserDefaults]valueForKey:kHasLoadLaunchView]boolValue];
returnloaded;
}
//刷新本地缓存的引导页图片数据
+ (void)loadLaunchImgData
{
//获取Documents目录路径
NSArray*paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString*docDir
= [pathsobjectAtIndex:0];
NSString*launchDir = [docDirstringByAppendingString:@"/LaunchImg"];
NSFileManager*
fm=[NSFileManagerdefaultManager];
//NSString *imagePath = [[NSBundlemainBundle] pathForResource:@"22" ofType:@"jpg"];
if(![fmfileExistsAtPath:launchDir]){
NSError*error =nil;
//下面是对该文件进行制定路径的保存
[fmcreateDirectoryAtPath:launchDirwithIntermediateDirectories:YESattributes:nilerror:nil];
NSString*sourcePath = [[NSBundlemainBundle]pathForResource:@"1"ofType:@"jpg"];
NSString*toPath = [launchDirstringByAppendingString:@"/1.jpg"];
[fmcopyItemAtPath:sourcePathtoPath:toPatherror:&error];
if(error) {
return;
}
//[[self class] copyFile:sourcePathTo:toPath];
sourcePath = [[NSBundlemainBundle]pathForResource:@"2"ofType:@"jpg"];
toPath = [launchDirstringByAppendingString:@"/2.jpg"];
[fmcopyItemAtPath:sourcePathtoPath:toPatherror:&error];
if(error) {
return;
}
sourcePath = [[NSBundlemainBundle]pathForResource:@"3"ofType:@"jpg"];
toPath = [launchDirstringByAppendingString:@"/3.jpg"];
[fmcopyItemAtPath:sourcePathtoPath:toPatherror:&error];
if(error) {
return;
}
sourcePath = [[NSBundlemainBundle]pathForResource:@"4"ofType:@"jpg"];
toPath = [launchDirstringByAppendingString:@"/4.jpg"];
[fmcopyItemAtPath:sourcePathtoPath:toPatherror:&error];
if(error) {
return;
}
[[NSUserDefaultsstandardUserDefaults]setValue:[NSNumbernumberWithBool:NO]forKey:kHasLoadLaunchView];
}
else
{
[[NSUserDefaultsstandardUserDefaults]setValue:[NSNumbernumberWithBool:YES]forKey:kHasLoadLaunchView];
///TODO:后续在此进行网络请求，删除本地文件，然后更新本地文件,然后重置kHasLoadLaunchView值为NO
}
}
+(NSArray*)getLaunchImgFilePathArr
{
NSArray*paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString*docDir = [pathsobjectAtIndex:0];
NSString*launchDir = [docDirstringByAppendingString:@"/LaunchImg"];
NSFileManager*
fm=[NSFileManagerdefaultManager];
//取得一个目录下得所有文件名
NSArray*files = [fmsubpathsAtPath:launchDir];
if([filescount] >0) {
NSMutableArray*filePathArr = [[NSMutableArrayalloc]init];
for(NSString*fpinfiles) {
[filePathArraddObject:[launchDirstringByAppendingString:[NSStringstringWithFormat:@"/%@",fp]]];
}
returnfilePathArr;
}
else
returnnil;
}
5半透明遮罩
5.1法一
我最后采取的方法，是present一个窗口化的ViewController。但是这个窗口默认的背景色是磨砂不透明的，因此还需要把它的背景色设为透明。这样看起来就像是全屏遮罩一样，但是由于系统不认为新的View是全屏的，所以上一个View也不会被unload。
YLSLockScreenViewController*lockScreenController = [[YLSLockScreenViewController alloc] init];
lockScreenController.modalPresentationStyle
= UIModalPresentationFormSheet;//窗口
[self.mainViewControllerpresentViewController:lockScreenController animated:YES completion:^(void){
lockScreenController.view.superview.backgroundColor = [UIColorclearColor];//背景色透明
}];
代码比较简单，需要注意的是，设置背景色透明的那行代码，需要写在completion block里，而且设置的不是controller.view.backgroundColor，而是controller.view.superview.backgroundColor。
iOS7实现全屏模态半透明页面的效果
http://www.open-open.com/lib/view/open1392707807819.html
5.2法二(good)
backgroundView = [[UIView alloc] init];
backgroundView.frame= CGRectMake(0, 0,kWidth,kHeight);
backgroundView.backgroundColor= [UIColor colorWithRed:(40/255.0f) green:(40/255.0f) blue:(40/255.0f)alpha:1.0f];
backgroundView.alpha= 0.4;
[self.view.windowaddSubview:backgroundView];
建立一个view设置背景颜色调整alpha值
iOS模糊半透明效果实现
http://my.oschina.net/kevinvane/blog/129707
6参考链接
IOS启动页面制作
http://my.oschina.net/xiahuawuyu/blog/169113
ios用户引导页
http://blog.csdn.net/wanglj7525/article/details/43408809
IOS用户引导界面示例
http://www.open-open.com/lib/view/open1411201907593.html
ios页面跳转
http://blog.csdn.net/yesjava/article/details/7894663
iOS开发UIScrollView制作APP引导页
http://jingyan.baidu.com/article/4dc40848a341dfc8d846f152.html
iOS引导页实现（一）
http://blog.csdn.net/lwjok2007/article/details/46516047
iOS启动时如何添加引导页面小demo
http://blog.csdn.net/yudandan10/article/details/42009511
IOS闪屏制作——程序启动动画
http://my.oschina.net/amoyai/blog/94988
ios实现引导页面效果
http://blog.csdn.net/leechee_1986/article/details/24850547
半透明遮罩是如何实现的(如图)
