Eclipse: converting Android to plain Java project

When you are switching between Android and plain Java projects (or libraries) occasionally you may end up with a Java project that is complaining: AndroidManifest.xml is missing!
This tutorial shows the steps to fix that.

Step 1) Open .properties and remove line with AndroidNature

<natures><nature>com.android.ide.eclipse.adt.AndroidNature</nature><nature>org.eclipse.jdt.core.javanature</nature></natures>

Step 2) remove Android specific buildSpec

<buildSpec><buildCommand><name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name><arguments></arguments></buildCommand><buildCommand><name>com.android.ide.eclipse.adt.PreCompilerBuilder</name><arguments></arguments></buildCommand><buildCommand><name>org.eclipse.jdt.core.javabuilder</name><arguments></arguments></buildCommand><buildCommand><name>com.android.ide.eclipse.adt.ApkBuilder</name><arguments></arguments></buildCommand></buildSpec>

Step 3) Open .classpath and remove android references

<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>

<classpathentry exported="true" kind="con" path="com.android.ide.eclipse.adt.LIBRARIES"/>

<classpathentry exported="true" kind="con" path="com.android.ide.eclipse.adt.DEPENDENCIES"/>

Step 3) Open  project.properties (auto-generated) and remove Android references

android.library=true

# Project target.

target=android-17

Step 4)  Open .settings/org.eclipse.jdk.core.pref the file should look like that

eclipse.preferences.version=1

org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled

org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.6

org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve

org.eclipse.jdt.core.compiler.compliance=1.6

org.eclipse.jdt.core.compiler.debug.lineNumber=generate

org.eclipse.jdt.core.compiler.debug.localVariable=generate

org.eclipse.jdt.core.compiler.debug.sourceFile=generate

org.eclipse.jdt.core.compiler.problem.assertIdentifier=error

org.eclipse.jdt.core.compiler.problem.enumIdentifier=error

org.eclipse.jdt.core.compiler.source=1.6

Step 4) Clean and rebuild the project