FloatingActionButton org.eclipse.jdt.core.javabuilder org.eclipse.buildship.core.gradleprojectbuilder com.android.ide.eclipse.adt.ResourceManagerBuilder com.android.ide.eclipse.adt.PreCompilerBuilder com.android.ide.eclipse.adt.ApkBuilder com.android.ide.eclipse.adt.AndroidNature org.eclipse.jdt.core.javanature org.eclipse.buildship.core.gradleprojectnature