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iOSアプリのスプラッシュ画像の取得方法

Last updated at Posted at 2015-01-15

iOSのアプリで画像を取得する際は

[UIImage imageNamed:"画像名"];

という形で取得しますね。

しかしスプラッシュ画像はそれではうまくいかないようです。

ビルド時に

[ LaunchImageのAssets Catalog登録名 ]-[ iOS Version ]-[ 画面の向き ]-[ 画面の高さ ][ スケール ].png

という感じにリネームされるようです。

#リスト
アプリのLaunchImageを LaunchImage という名前でAssets Catalogに登録した場合

iOS ディスプレイ 画像名
iOS5,6 3.5inch LaunchImage
iOS5,6 3.5inch Retina LaunchImage@2x
iOS5,6 4.0inch Retina LaunchImage-568h@2x
iOS7,8 3.5inch Retina LaunchImage-700@2x
iOS7,8 4.0inch Retina LaunchImage-700-568h@2x
iOS8 4.7inch Retina LaunchImage-800-667h@2x
iOS8 5.5inch Retina Portrait LaunchImage-800-Portrait-736h@3x
iOS8 5.5inch Retina Landscape LaunchImage-800-Landscape-736h@3x

#ソースコード例

LaunchImage.m
NSString *imageName = @"LaunchImage";
NSInteger osVer = floor( [[[UIDevice currentDevice] systemVersion] floatValue] ) * 100;
NSInteger height = CGRectGetHeight( [[UIScreen mainScreen] bounds] );

// 3.5 inch
if ( height < 568 ) {
	// iOS 7 〜
	if ( osVer >= 700 ) {
		imageName = [NSString stringWithFormat:@"%@-%zd", imageName, osVer];
	}
}
// 4.0 inch 〜
else if ( height < 736 ) {
	// iOS 7 〜
	if ( osVer >= 700 ) {
		imageName = [NSString stringWithFormat:@"%@-%zd-%zdh", imageName, osVer, height];
	}
	// 〜 iOS 6 
	else {
		imageName = [NSString stringWithFormat:@"%@-%zdh", imageName, height];
	}
}
// iPhone 6 Plus
else {
	NSString *orientation;
	switch ( [[UIApplication sharedApplication] statusBarOrientation] ) {
		case UIInterfaceOrientationPortrait:
		case UIInterfaceOrientationPortraitUpsideDown:
		case UIInterfaceOrientationUnknown:
			orientation = @"Portrait";
			break;
			
		case UIInterfaceOrientationLandscapeLeft:
		case UIInterfaceOrientationLandscapeRight:
			orientation = @"Landscape";
			break;
	}
	imageName = [NSString stringWithFormat:@"%@-%zd-%@-%zdh", imageName, osVer, orientation, height];
}
UIImage *launchImage = [UIImage imageNamed:imageName];

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