用代码获取APP启动页图片 

//// AppleSystemService.swift// Swift-Animations//// Created by YouXianMing on 16/8/11.// Copyright © 2016年 YouXianMing. All rights reserved.//import UIKitclass AppleSystemService : NSObject {  /**  Get the lauch image.    - returns: The lauch image.  */ class func launchImage() -> UIImage {    var lauchImage  : UIImage!  var viewOrientation : String!  let viewSize  = UIScreen.mainScreen().bounds.size  let orientation  = UIApplication.sharedApplication().statusBarOrientation    if orientation == .LandscapeLeft || orientation == .LandscapeRight {      viewOrientation = "Landscape"     } else {      viewOrientation = "Portrait"  }    let imagesInfoArray = NSBundle.mainBundle().infoDictionary!["UILaunchImages"]  for dict : Dictionary <String, String> in imagesInfoArray as! Array {      let imageSize = CGSizeFromString(dict["UILaunchImageSize"]!)   if CGSizeEqualToSize(imageSize, viewSize) && viewOrientation == dict["UILaunchImageOrientation"]! as String {        lauchImage = UIImage(named: dict["UILaunchImageName"]!)   }  }    return lauchImage }}

源码 - Objective-C 

//// AppleSystemService.h// AppleSystemService//// Created by YouXianMing on 16/7/2.// Copyright © 2016年 YouXianMing. All rights reserved.//#import <Foundation/Foundation.h>#import <UIKit/UIKit.h>@interface AppleSystemService : NSObject/** * Get the lauch image. * * @return The lauch image. */+ (UIImage *)launchImage;@end//// AppleSystemService.m// AppleSystemService//// Created by YouXianMing on 16/7/2.// Copyright © 2016年 YouXianMing. All rights reserved.//#import "AppleSystemService.h"@implementation AppleSystemService+ (UIImage *)launchImage { UIImage    *lauchImage  = nil; NSString    *viewOrientation = nil; CGSize     viewSize  = [UIScreen mainScreen].bounds.size; UIInterfaceOrientation orientation  = [[UIApplication sharedApplication] statusBarOrientation];  if (orientation == UIInterfaceOrientationLandscapeLeft || orientation == UIInterfaceOrientationLandscapeRight) {    viewOrientation = @"Landscape";   } else {   viewOrientation = @"Portrait"; }  NSArray *imagesDictionary = [[[NSBundle mainBundle] infoDictionary] valueForKey:@"UILaunchImages"]; for (NSDictionary *dict in imagesDictionary) {    CGSize imageSize = CGSizeFromString(dict[@"UILaunchImageSize"]);  if (CGSizeEqualToSize(imageSize, viewSize) && [viewOrientation isEqualToString:dict[@"UILaunchImageOrientation"]]) {     lauchImage = [UIImage imageNamed:dict[@"UILaunchImageName"]];  } } return lauchImage;}@end

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