Unreal Engine Issues and Bug Tracker (UE-47951)

Description

Since multiple dict tags can be in a plist, not just the top level, need to be able to specify to only insert once.

Adding an optional once="true" attribute to these commands in UPL will allow this.

Steps to Reproduce

1. Create iOS code project
2. Add this to the project's Build.cs:

if (Target.Platform == UnrealTargetPlatform.IOS)
{
                string PluginPath = Utils.MakePathRelativeTo(ModuleDirectory, BuildConfiguration.RelativeEnginePath);
                AdditionalPropertiesForReceipt.Add(new ReceiptProperty("IOSPlugin", Path.Combine(PluginPath, "Test_UPL.xml")));
}

And add this Test_UPL.xml file:

<?xml version="1.0" encoding="utf-8"?>
<root>
	<!-- init section is always evaluated once per architecture -->
	<init>
		<log text="Test UPL init"/>
		<setString name="APIKey" value="testkey"/>
	</init>
	
	<iosPListUpdates>
		<!-- Add Fabric.io ApiKey -->
		<addElements tag="dict" once="true">
			<key>Fabric</key>
		</addElements>
		<setElement result="FabricKey" xml="&lt;dict&gt;&lt;key&gt;APIKey&lt;/key&gt;&lt;string&gt;$S(APIKey)&lt;/string&gt;&lt;key&gt;Kits&lt;/key&gt;&lt;array&gt;&lt;dict&gt;&lt;key&gt;KitInfo&lt;/key&gt;&lt;dict/&gt;&lt;key&gt;KitName&lt;/key&gt;&lt;string&gt;Crashlytics&lt;/string&gt;&lt;/dict&gt;&lt;/array&gt;&lt;/dict&gt;"/>
		<addElement tag="dict" name="FabricKey" once="true"/>
	</iosPListUpdates>
</root>

3. Package for iOS and look at the plist file to make sure the fabric key is only inserted once instead of for every dict block.

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Fixed

Component	UE - Platform - Mobile
Affects Versions	4.17, 4.18
Target Fix	4.17

Fix Commit	3569317
Main Commit	3596628
Release Commit	3569317

Created	Aug 1, 2017
Resolved	Aug 2, 2017
Updated	Sep 16, 2019

UE-47951

Need addElement and addElements to allow single insertion instead of to all elements with matching tag

Need addElement and addElements to allow single insertion instead of to all elements with matching tag

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