ios 中用纯代码设置launchImage

CGSizeviewSize =self.window.bounds.size;

NSString*viewOrientation =@"Portrait";//横屏请设置成 @"Landscape"

NSString*launchImage =nil;

NSArray* imagesDict = [[[NSBundlemainBundle] infoDictionary] valueForKey:@"UILaunchImages"];

for(NSDictionary* dictinimagesDict)

{

CGSizeimageSize =CGSizeFromString(dict[@"UILaunchImageSize"]);

if(CGSizeEqualToSize(imageSize, viewSize) && [viewOrientation isEqualToString:dict[@"UILaunchImageOrientation"]])

{

launchImage = dict[@"UILaunchImageName"];

}

}

UIImageView*launchView = [[UIImageViewalloc] initWithImage:[UIImageimageNamed:launchImage]];

launchView.frame=self.window.bounds;

launchView.contentMode=UIViewContentModeScaleAspectFill;

[self.windowaddSubview:launchView];

[UIViewanimateWithDuration:2.0f

delay:0.0f

options:UIViewAnimationOptionBeginFromCurrentState

animations:^{

launchView.alpha=0.0f;

launchView.layer.transform=CATransform3DScale(CATransform3DIdentity,1.2,1.2,1);

}

completion:^(BOOLfinished) {

[launchView removeFromSuperview];

}];