Fix issue when files are deleted

Author: dellis1972

src/Xamarin.Android.Build.Tasks/MSBuild/Xamarin/Android/Xamarin.Android.Javac.targets

@@ -21,7 +21,9 @@ It is shared between "legacy" binding projects and .NET 7+ projects.
     <_AndroidIntermediateBindingClassesZip>$(IntermediateOutputPath)binding\bin\$(MSBuildProjectName).jar</_AndroidIntermediateBindingClassesZip>
     <_AndroidIntermediateBindingClassesDocs>$(IntermediateOutputPath)binding\bin\$(MSBuildProjectName)-docs.xml</_AndroidIntermediateBindingClassesDocs>
     <_AndroidCompileJavaStampFile>$(_AndroidStampDirectory)_CompileJava.stamp</_AndroidCompileJavaStampFile>
+    <_AndroidCompileJavaFileList>$(IntermediateOutputPath)_CompileJava.FileList.txt</_AndroidCompileJavaFileList>
     <_AndroidCompileBindingJavaStampFile>$(_AndroidStampDirectory)_CompileBindingJava.stamp</_AndroidCompileBindingJavaStampFile>
+    <_AndroidCompileBindingJavaFileList>$(IntermediateOutputPath)_CompileBindingJava.FileList.txt</_AndroidCompileBindingJavaFileList>
   </PropertyGroup>
 
   <Target Name="_AdjustJavacVersionArguments">
@@ -74,18 +76,36 @@ It is shared between "legacy" binding projects and .NET 7+ projects.
     <ItemGroup>
       <_JavaBindingSource Include="@(AndroidJavaSource)" Condition=" '%(AndroidJavaSource.Bind)' == 'True' " />
     </ItemGroup>
+    <WriteLinesToFile
+        File="$(_AndroidCompileBindingJavaFileList)"
+        Lines="@(_JavaBindingSource->ToLowerInvariant())"
+        Overwrite="true"
+        WriteOnlyWhenDifferent="true"
+    />
+    <ItemGroup>
+      <FileWrites Include="$(_AndroidCompileBindingJavaFileList)" />
+    </ItemGroup>
   </Target>
 
   <Target Name="_CollectJavaSource">
     <ItemGroup>
       <_JavaSource Include="@(AndroidJavaSource)" Condition=" '%(AndroidJavaSource.Bind)' != 'True' " />
     </ItemGroup>
+   <WriteLinesToFile
+        File="$(_AndroidCompileJavaFileList)"
+        Lines="@(_JavaSource->ToLowerInvariant())"
+        Overwrite="true"
+        WriteOnlyWhenDifferent="true"
+    />
+    <ItemGroup>
+      <FileWrites Include="$(_AndroidCompileJavaFileList)" />
+    </ItemGroup>
   </Target>
 
   <Target Name="_CompileBindingJava"
       Condition=" '@(_JavaBindingSource->Count())' != '0' "
       DependsOnTargets="$(_CompileBindingJavaDependsOnTargets)"
-      Inputs="@(_AndroidMSBuildAllProjects);$(MonoPlatformJarPath);@(_JavaBindingSource)"
+      Inputs="@(_AndroidMSBuildAllProjects);$(_AndroidCompileBindingJavaFileList);$(MonoPlatformJarPath);@(_JavaBindingSource)"
       Outputs="$(_AndroidCompileBindingJavaStampFile)">
 
     <!-- remove existing <Javac /> outputs, since *.class files and classes.zip could contain old files -->
@@ -132,7 +152,7 @@ It is shared between "legacy" binding projects and .NET 7+ projects.
 
   <Target Name="_CompileJava"
     DependsOnTargets="$(_CompileJavaDependsOnTargets);_CollectJavaSource"
-    Inputs="@(_AndroidMSBuildAllProjects);$(MonoPlatformJarPath);@(_JavaStubFiles);@(_JavaSource)"
+    Inputs="@(_AndroidMSBuildAllProjects);$(_AndroidCompileJavaFileList);$(MonoPlatformJarPath);@(_JavaStubFiles);@(_JavaSource)"
     Outputs="$(_AndroidCompileJavaStampFile)">
 
     <!-- remove existing <Javac /> outputs, since *.class files and classes.zip could contain old files -->

src/Xamarin.Android.Build.Tasks/Tests/Xamarin.Android.Build.Tests/BindingBuildTest.cs

@@ -39,7 +39,7 @@ public void DotNetBuildBinding ()
 			proj.OtherBuildItems.Add (new BuildItem ("JavaSourceJar", "javaclasses-sources.jar") {
 				BinaryContent = () => ResourceData.JavaSourceJarTestSourcesJar,
 			});
-			proj.OtherBuildItems.Add (new AndroidItem.AndroidJavaSource ("JavaSourceTestExtension.java") {
+			proj.AndroidJavaSources.Add (new AndroidItem.AndroidJavaSource ("JavaSourceTestExtension.java") {
 				Encoding = Encoding.ASCII,
 				TextContent = () => ResourceData.JavaSourceTestExtension,
 				Metadata = { { "Bind", "True"} },

src/Xamarin.Android.Build.Tasks/Tests/Xamarin.ProjectTools/Common/DotNetXamarinProject.cs

@@ -17,10 +17,12 @@ protected DotNetXamarinProject (string debugConfigurationName = "Debug", string
 
 			Sources = new List<BuildItem> ();
 			OtherBuildItems = new List<BuildItem> ();
+			AndroidJavaSources = new List<BuildItem> ();
 
 			ItemGroupList.Add (References);
 			ItemGroupList.Add (OtherBuildItems);
 			ItemGroupList.Add (Sources);
+			ItemGroupList.Add (AndroidJavaSources);
 
 			SetProperty ("RootNamespace", () => RootNamespace ?? ProjectName);
 			SetProperty ("AssemblyName", () => AssemblyName ?? ProjectName);
@@ -40,6 +42,7 @@ protected DotNetXamarinProject (string debugConfigurationName = "Debug", string
 
 		public IList<BuildItem> OtherBuildItems { get; private set; }
 		public IList<BuildItem> Sources { get; private set; }
+		public IList<BuildItem> AndroidJavaSources { get; private set; }
 
 		public IList<Property> ActiveConfigurationProperties {
 			get { return IsRelease ? ReleaseProperties : DebugProperties; }

src/Xamarin.Android.Build.Tasks/Xamarin.Android.Common.targets

@@ -2569,6 +2569,8 @@ because xbuild doesn't support framework reference assemblies.
 	<Delete Files="$(_AndroidMainDexListFile)" />
 	<Delete Files="$(_AndroidBuildIdFile)" />
 	<Delete Files="$(_ResolvedUserAssembliesHashFile)" />
+	<Delete Files="$(_AndroidCompileBindingJavaFileList)" />
+	<Delete Files="$(_AndroidCompileJavaFileList)" />
 </Target>
 
 <Target Name="_CleanAndroidBuildPropertiesCache">

tests/MSBuildDeviceIntegration/Tests/InstallTests.cs

@@ -631,7 +631,8 @@ public String test(){
 						},
 					};
 			var proj = new XamarinAndroidApplicationProject {
-				OtherBuildItems = {
+				EnableDefaultItems = true,
+				AndroidJavaSources = {
 					new AndroidItem.AndroidJavaSource ("TestJavaClass.java") {
 						Encoding = Encoding.ASCII,
 						TextContent = () => @"package com.test.java;
@@ -664,8 +665,9 @@ public String test(){
 				Assert.IsTrue (b.Output.IsTargetSkipped ("_ClearGeneratedManagedBindings", defaultIfNotUsed: true), $"`_ClearGeneratedManagedBindings` should be skipped on DTB build!");
 				FileAssert.Exists (generatedCode, $"'{generatedCode}' should have not be deleted on DTB build.");
 				FileAssert.Exists (generatedCode2, $"'{generatedCode2}' should have not be deleted on DTB build.");
-				proj.OtherBuildItems.Remove (itemToDelete);
-				Assert.IsTrue (b.Build (proj, doNotCleanupOnUpdate: true, saveProject: true), "Second build should have succeeded.");
+				proj.AndroidJavaSources.Remove (itemToDelete);
+				File.Delete (Path.Combine (Root, b.ProjectDirectory, itemToDelete.Include ()));
+				Assert.IsTrue (b.Build (proj, doNotCleanupOnUpdate: true, saveProject: false), "Second build should have succeeded.");
 				FileAssert.Exists (generatedCode, $"'{generatedCode}' should have not be deleted on second build.");
 				FileAssert.DoesNotExist (generatedCode2, $"'{generatedCode2}' should have be deleted on second build.");
 				Assert.IsFalse (b.Output.IsTargetSkipped ("_CompileBindingJava"), $"`_CompileBindingJava` should run on second build!");