iOS應用程序切片或間拔不起作用

Question

我目前正在嘗試優化iOS IAP的大小，並希望新的「iOS應用程序切片」可以減少最終輸出中包含的圖像數量。這似乎並非如此。

我建立在iOS 9.3的部署目標（7.0 - 雖然也試過9.3無效）。這是一個通用應用程序，應用程序圖標/啓動圖像位於資產目錄中（以及其他一些圖像資源）。

爲了測試我按照說明這裏的切片： https://developer.apple.com/library/tvos/documentation/IDEs/Conceptual/AppDistributionGuide/TestingYouriOSApp/TestingYouriOSApp.html#//apple_ref/doc/uid/TP40012582-CH8-SW17

應用程序細化大小報告在設備類型之間的尺寸表現出非常小的差異，並應該有一個iPad和iPhone之間相當大的差異！

App Thinning Size Report for All Variants of myApp 

Variant: myApp-iPad (4th generation)-etc.ipa 
Supported devices: iPad (3rd generation) and iPad (4th generation) 
App + On Demand Resources size: 71.8 MB compressed, 90.3 MB uncompressed 
App size: 71.8 MB compressed, 90.3 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 


Variant: myApp-iPad 2-etc.ipa 
Supported devices: iPad 2 and iPad mini 
App + On Demand Resources size: 71.6 MB compressed, 90.1 MB uncompressed 
App size: 71.6 MB compressed, 90.1 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 


Variant: myApp-iPad Pro (12.9-inch).ipa 
Supported devices: iPad Pro (12.9-inch) 
App + On Demand Resources size: 71.5 MB compressed, 90.9 MB uncompressed 
App size: 71.5 MB compressed, 90.9 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 


Variant: myApp-iPad Pro (9.7-inch).ipa 
Supported devices: iPad Pro (9.7-inch) 
App + On Demand Resources size: 71.5 MB compressed, 90.9 MB uncompressed 
App size: 71.5 MB compressed, 90.9 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 


Variant: myApp-iPad mini 3-etc.ipa 
Supported devices: iPad Air, iPad mini 2, and iPad mini 3 
App + On Demand Resources size: 71.5 MB compressed, 90.9 MB uncompressed 
App size: 71.5 MB compressed, 90.9 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 


Variant: myApp-iPad mini 4-etc.ipa 
Supported devices: iPad Air 2 and iPad mini 4 
App + On Demand Resources size: 71.5 MB compressed, 90.9 MB uncompressed 
App size: 71.5 MB compressed, 90.9 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 


Variant: myApp-iPhone 4S.ipa 
Supported devices: iPhone 4S 
App + On Demand Resources size: 71.8 MB compressed, 90.3 MB uncompressed 
App size: 71.8 MB compressed, 90.3 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 


Variant: myApp-iPhone 5-etc.ipa 
Supported devices: iPhone 5 and iPhone 5c 
App + On Demand Resources size: 71.8 MB compressed, 90.3 MB uncompressed 
App size: 71.8 MB compressed, 90.3 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 


Variant: myApp-iPhone 5s.ipa 
Supported devices: iPhone 5s 
App + On Demand Resources size: 71.5 MB compressed, 90.9 MB uncompressed 
App size: 71.5 MB compressed, 90.9 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 


Variant: myApp-iPhone 6 Plus.ipa 
Supported devices: iPhone 6 Plus 
App + On Demand Resources size: 71.9 MB compressed, 91.2 MB uncompressed 
App size: 71.9 MB compressed, 91.2 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 


Variant: myApp-iPhone 6.ipa 
Supported devices: iPhone 6 
App + On Demand Resources size: 71.5 MB compressed, 90.9 MB uncompressed 
App size: 71.5 MB compressed, 90.9 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 


Variant: myApp-iPhone 6s Plus.ipa 
Supported devices: iPhone 6s Plus 
App + On Demand Resources size: 71.9 MB compressed, 91.2 MB uncompressed 
App size: 71.9 MB compressed, 91.2 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 


Variant: myApp-iPhone 6s.ipa 
Supported devices: iPhone 6s 
App + On Demand Resources size: 71.5 MB compressed, 90.9 MB uncompressed 
App size: 71.5 MB compressed, 90.9 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 


Variant: myApp-iPhone SE.ipa 
Supported devices: iPhone SE 
App + On Demand Resources size: 71.5 MB compressed, 90.9 MB uncompressed 
App size: 71.5 MB compressed, 90.9 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 


Variant: myApp-iPod touch (6th generation).ipa 
Supported devices: iPod touch (6th generation) 
App + On Demand Resources size: 71.5 MB compressed, 90.9 MB uncompressed 
App size: 71.5 MB compressed, 90.9 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 


Variant: myApp-iPod touch.ipa 
Supported devices: iPod touch 
App + On Demand Resources size: 71.8 MB compressed, 90.3 MB uncompressed 
App size: 71.8 MB compressed, 90.3 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 


Variant: myApp.ipa 
Supported devices: Universal 
App + On Demand Resources size: 75.3 MB compressed, 99.9 MB uncompressed 
App size: 75.3 MB compressed, 99.9 MB uncompressed 
On Demand Resources size: Zero KB compressed, Zero KB uncompressed 

在進一步調查該過程導出的「特定設備變量」時，我可以看到沒有明顯的切片發生。

應用有效載荷爲iPhone 5設備型號 - 解壓後IPA：

如果我切片的理解是正確的，不應該有圖標或推出其他iOS設備的圖像（如iPhone 6+，解鎖iPhone和iPad）

這裏是我的資產目錄中的內容（在Xcode和取景器），如果有幫助：

在此先感謝！ :)

Answer 1

回答我的問題：

我現在的假設是，啓動圖片和圖標都沒有變薄/切片。這是因爲它們通常用於在啓動時檢測對某些設備的支持。

但是，我可以確認資產目錄中的其他圖像資源已被正確地細化。

您可以通過解壓IPA並在IPA中的Assets.car文件上運行CARExtractor工具來檢查。

https://github.com/Marxon13/iOS-Asset-Extractor/tree/master/CARExtractor