经过数月的编码后，我已经成功完成了我的应用。现在我正在尝试将初始的Splash Screen图像添加到我的应用程序中。我该怎么办？ 我有两张图片：一张是公司徽标，另一张是 app logo （这些启动画面用于隐藏加载时间）。我已经找到了可能答案的每个地方，但最终没有解决方案。当我命名单个图片 Default-Landscape.png 并运行Ipad应用程序时 - 图像显示直到主视图控制器加载，但我希望第一个图像显示为1秒，然后淡出到第二张图像， 1秒后显示主视图控制器（原始应用程序页面）。
我已经检查了各种答案，但似乎都没有 - Xcode 4 and iPad2 splash screen issue 的 Setting splash images for portrait and landscape mode - IPad 等等。
这是我的代码 - AppDelegate.h
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
NSArray *docDir=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docPath=[docDir objectAtIndex:0];
databasePath=[docPath stringByAppendingPathComponent:@"something.sqlite"];
//databasePath1=[docPath stringByAppendingPathComponent:@"something.sqlite"];
NSString *bundlePath=[[NSBundle mainBundle]pathForResource:@"something" ofType:@"sqlite"];
NSFileManager *mngr=[NSFileManager defaultManager];
if ([mngr fileExistsAtPath:databasePath]) {
NSLog(@"File Exists");
}
else
{
[mngr copyItemAtPath:bundlePath toPath:databasePath error:NULL];
NSLog(@"File Created");
}
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
// Override point for customization after application launch.
self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];
self.window.rootViewController = self.viewController;
[self.window makeKeyAndVisible];
return YES;
}
我现在该怎么办？我应该使用uiImageView创建一个新类（splashScreen 1和splashScreen 2）并更改 didFinishLaunchingWithOptions 方法吗？任何帮助将不胜感激。
更新日期：2013年5月30日
Appdelegate.h
#import <UIKit/UIKit.h>
#import "sqlite3.h"
#import "FBInteract.h"
#import "splashScreen1.h"
sqlite3 *dbHandler;
NSString *databasePath;
@class ViewController;
@interface AppDelegate : UIResponder <UIApplicationDelegate> {
UIWindow *window;
UINavigationController *naviObj;
}
@property (strong, nonatomic) UIWindow *window;
@property (strong, nonatomic) ViewController *viewController;
@property (strong, nonatomic) UINavigationController *naviObj;
@end
Appdelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
splashScreen1 *splashScreen1PageObj=[[splashScreen1 alloc]init];
self.naviObj = [[UINavigationController alloc]initWithRootViewController:splashScreen1PageObj];
self.window.rootViewController = self.naviObj;
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:NO];
[self.window makeKeyAndVisible];
return YES;
}
splashScreen1.h 和 splashScreen2.h
#import <UIKit/UIKit.h>
#import "splashScreen2.h"
@interface splashScreen1 : UIViewController
{
IBOutlet UIImageView *imgObjSplashImage; // IBOutlet UIImageView *objSplashImage; - in splashScreen2.h
}
-(void)hideSplash;
-(void)navigationToMain;
-(void)showSplash;
@end
splashScreen1.m 和 splashScreen2.m
- (void)viewDidLoad
{
// Do any additional setup after loading the view from its nib.
[NSTimer scheduledTimerWithTimeInterval:1.2 target:self selector:@selector(showSplash) userInfo:nil repeats:NO];
self.navigationController.navigationBarHidden=YES;
[imgObjSplashImage setAlpha:0]; //objSplashImage instead of imgObjSplashImage in splashScreen2
[super viewDidLoad];
}
-(void)showSplash{
[UIImageView beginAnimations:nil context:NULL];
[UIImageView setAnimationDuration:1.2];
[imgObjSplashImage setAlpha:1]; //objSplashImage instead of imgObjSplashImage in splashScreen2
[UIImageView commitAnimations];
[NSTimer scheduledTimerWithTimeInterval:2.4 target:self selector:@selector(hideSplash) userInfo:nil repeats:NO];
}
-(void)hideSplash{
[UIImageView beginAnimations:nil context:NULL];
[UIImageView setAnimationDuration:1.4];
[imgObjSplashImage setAlpha:0]; //objSplashImage instead of imgObjSplashImage in splashScreen2
[UIImageView commitAnimations];
[NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(navigationToMain) userInfo:nil repeats:NO];
}
#pragma mark
#pragma mark - Navigation Coding
-(void)navigationToMain {
//[self dismissModalViewControllerAnimated:YES];
[self dismissViewControllerAnimated:NO completion:Nil];
ViewController *ViewControllerPageObj=[[ViewController alloc]init];
[self.navigationController pushViewController:ViewControllerPageObj animated:NO];
[ViewControllerPageObj release];
//[self presentViewController:ViewControllerPageObj animated:NO completion:Nil];
}
-(void)viewWillAppear:(BOOL)animated {
self.navigationController.navigationBarHidden=YES;
}
问题是ViewController（主ViewController）没有加载...我在ViewController.m的viewDidLoad部分中收到错误说“消息发送到deallocated instance”
RootViewController - ＆gt; splashScreen1 - ＆gt; splashScreen2工作正常（所有动画渐入淡出）但最终的ViewController没有加载..
答案 0 :(得分：1)
为此你肯定想要另一个VC，让我们称之为StartViewController。添加一个imageView，块旋转和setTimer：
[NSTimer scheduledTimerWithTimeInterval:2.0 target:self selector:@selector(moveOnAndChangeVC:) userInfo:nil repeats:NO];
如果您开发NavigationControl应用程序，您还应该更改rootVC，例如：
+(void)replaceRootVCWithVC:(id)vc {
NSMutableArray *viewControllers = [NSMutableArray arrayWithArray:[[sharedAppDelegate navigationController] viewControllers]];
if(![viewControllers isEmpty])
[viewControllers replaceObjectAtIndex:0 withObject:vc];
else
[viewControllers addObject:vc];
[[sharedAppDelegate navigationController] setViewControllers:viewControllers];
}
修改
您应该使用初始化程序更改appDelegate行：
self.viewController = [[[StartViewController alloc] initWithNibName:@"StartViewController" bundle:nil] autorelease];
这应该将您的VC称为rootVC。
然后在StartViewController.m中你应该识别设备（这是一个仅限iPad的应用程序，对吗？不是通用的）和方向：
+(NSString*)recognizeDeviceAndOrientation {
NSMutableString * returnString;
if([StartViewController deviceInterfaceOrientation] == UIInterfaceOrientationLandscapeLeft || [StartViewController deviceInterfaceOrientation] == UIInterfaceOrientationLandscapeRight) {
returnString = @"Default-Landscape";
} else {
returnString = @"Default-Portrait";
}
if([UIScreen mainScreen].scale == 2.0)
return [NSString stringWithFormat:@"%@%@",returnString,@"@2x"];;
else
return returnString;
}
+(UIInterfaceOrientation)deviceInterfaceOrientation {
return [[UIApplication sharedApplication] statusBarOrientation];
}
这将返回一个带有DefaultScreen名称并且方向正确的字符串。如果你只处理一个方向而忘记它。
然后在viewDidLoad中添加imageView：
- (void)viewDidLoad {
[super viewDidLoad];
UIImageView *imageView = [[[UIImageView alloc] initWithImage:[StartViewController recognizeDeviceAndOrientation]] autorelease];
[imageView setFrame:self.frame];
[imageView setContentMode:UIViewContentModeScaleToFill];
[self.view addSubview:imageView];
[NSTimer scheduledTimerWithTimeInterval:2.0 target:self selector:@selector(moveOnAndChangeVC:) userInfo:nil repeats:NO];
}
这将调用计时器并设置imageView。
-(IBACtion)moveOnAndChangeVC:(id)sender {
//if you using navigation app
ViewController *vc = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];
[self.navigationController pushViewController:vc animated:NO];
}
这会奏效。然后，如果你想摆脱“后退按钮”，只需改变一个rootView控制器就像我在开始时说的那样。在ViewController类中执行。