Android export project encountered errors occurred during the build

Encounter errors occurred during the build this problem for a long time, did not find a good way, has been using the debug APK package again signed, so that can not be confused and encrypted APK package operation, many inconvenience!

So still to solve this problem, Baidu is not, so into the project root directory into the. Detadata folder, view the Eclipse log file. After viewing it, it is shown as follows:

! entry com.android.ide.eclipse.adt 4 0 2015-05-04 09:58:57.962! message export wizard error! stack 1org.eclipse.core.internal.resources.resourceexception: errors occurred during  The build.at org.eclipse.core.internal.resources.project$1.run (project.java:620) at  Org.eclipse.core.internal.resources.Workspace.run (workspace.java:2345) at  Org.eclipse.core.internal.resources.Project.internalBuild (project.java:597) at  Org.eclipse.core.internal.resources.Project.build (project.java:124) at  Com.android.ide.eclipse.adt.internal.project.ProjectHelper.compileInReleaseMode (projecthelper.java:1072) at  com.android.ide.eclipse.adt.internal.project.projecthelper.compileinreleasemode (ProjectHelper.java:1041) At com.android.ide.eclipse.adt.internal.project.projecthelper.compileinreleasemode (ProjectHelper.java : 1014) at com.android.ide.eclipse.adt.internal.project.exporthelper.exportreleaseapk (EXPORTHELPER.Java:99) At com.android.ide.eclipse.adt.internal.wizards.export.exportwizard.doexport (ExportWizard.java:305 ) at com.android.ide.eclipse.adt.internal.wizards.export.exportwizard.access$0 (ExportWizard.java:234) at  com.android.ide.eclipse.adt.internal.wizards.export.exportwizard$1.run (ExportWizard.java:219) at  Org.eclipse.jface.operation.modalcontext$modalcontextthread.run (modalcontext.java:121) Contains: Errors  running builder  ' Integrated external tool builder '  on project  ' Umenglibs ' .org.eclipse.core.runtime.coreexception: the builder launch configuration  Could not be found.at org.eclipse.core.externaltools.internal.externaltoolscore.newerror ( externaltoolscore.java:112) At org.eclipse.core.externaltools.internal.model.externaltoolbuilder.build ( externaltoolbuilder.java:76) At org.eclipse.core.internal.events.buildmanager$2.run (BuildManager.java:733) At org.eclipse.core.Runtime. Saferunner.run (saferunner.java:42) At org.eclipse.core.internal.events.buildmanager.basicbuild ( buildmanager.java:206) At org.eclipse.core.internal.events.buildmanager.basicbuild (BuildManager.java:328) At org.eclipse.core.internal.events.buildmanager.build (buildmanager.java:403) at  Org.eclipse.core.internal.resources.project$1.run (project.java:618) at  Org.eclipse.core.internal.resources.Workspace.run (workspace.java:2345) at  Org.eclipse.core.internal.resources.Project.internalBuild (project.java:597) at  Org.eclipse.core.internal.resources.Project.build (project.java:124) at  Com.android.ide.eclipse.adt.internal.project.ProjectHelper.compileInReleaseMode (projecthelper.java:1072) at  com.android.ide.eclipse.adt.internal.project.projecthelper.compileinreleasemode (ProjectHelper.java:1041) At com.android.ide.eclipse.adt.internal.project.projecthelper.compileinreleasemode (ProjectHelper.java : 1014) At com.android.ide.eclipse.adt.internal.project.exporthelper.exportreleaseapk (exporthelper.java:99) at  Com.android.ide.eclipse.adt.internal.wizards.export.ExportWizard.doExport (exportwizard.java:305) at  Com.android.ide.eclipse.adt.internal.wizards.export.exportwizard.access$0 (exportwizard.java:234) at  Com.android.ide.eclipse.adt.internal.wizards.export.exportwizard$1.run (exportwizard.java:219) at  Org.eclipse.jface.operation.modalcontext$modalcontextthread.run (modalcontext.java:121) Contains: The  builder launch configuration could not be found.! subentry 1 org.eclipse.core.resources 4 566 2015-05-04 09:58:57.963! message errors occurred during the build.! subentry 2 org.eclipse.core.externaltools 4 75 2015-05-04 09:58:57.963! message errors running builder  ' Integrated external tool builder '  on  project  ' Umenglibs '.! Stack 1org.eclipse.core.runtime.coreexception: the builder launch configuration could not be found.at  org.eclipse.core.externaltools.internal.externaltoolscore.newerror (externaltoolscore.java:112) at  Org.eclipse.core.externaltools.internal.model.ExternalToolBuilder.build (externaltoolbuilder.java:76) at  Org.eclipse.core.internal.events.buildmanager$2.run (buildmanager.java:733) at  Org.eclipse.core.runtime.SafeRunner.run (saferunner.java:42) at  Org.eclipse.core.internal.events.BuildManager.basicBuild (buildmanager.java:206) at  Org.eclipse.core.internal.events.BuildManager.basicBuild (buildmanager.java:328) at  Org.eclipse.core.internal.events.BuildManager.build (buildmanager.java:403) at  Org.eclipse.core.internal.resources.project$1.run (project.java:618) at  Org.eclipse.core.internal.resources.Workspace.run (workspace.java:2345) at  Org.eclipse.core.internal.resources.Project.internalBuild (project.java:597) at  Org.eclipse.core.internal.resources.Project.build (project.java:124) at  Com.android.ide.eclipse.adt.internal.project.ProjectHelper.compileInReleaseMode (projecthelper.java:1072) at  com.android.ide.eclipse.adt.internal.project.projecthelper.compileinreleasemode (ProjectHelper.java:1041) At com.android.ide.eclipse.adt.internal.project.projecthelper.compileinreleasemode (ProjectHelper.java : 1014) at com.android.ide.eclipse.adt.internal.project.exporthelper.exportreleaseapk (ExportHelper.java:99) At com.android.ide.eclipse.adt.internal.wizards.export.exportwizard.doexport (ExportWizard.java:305) at  com.android.ide.eclipse.adt.internal.wizards.export.exportwizard.access$0 (ExportWizard.java:234) at  Com.android.ide.eclipse.adt.internal.wizards.export.exportwizard$1.run (exportwizard.java:219) at  Org.eclipse.jface.operation.modalcontext$modalcontextthread.run (modalcontext.java:121)! subentry 3 org.eclipse.core.externaltools 4 0 2015-05-04 09:58:57.963! Message the builder launch configuration could not be found.! subentry 2 org.eclipse.core.externaltools 4 0 2015-05-04 09:58:57.963! Message the builder launch configuration could not be found.

The problem is:

Contains:errors running builder ' Integrated External Tool Builder ' on Project ' Umenglibs '.

So, select the ' Umenglibs ' Item, right-click, select the "Properties" option, select "Builders" in the pop-up menu, delete the Builders with Red Fork, and then you can export the project.

Android export project encountered errors occurred during the build