求大神解答

Question

<item    android:id="@+id/search"    app:actionViewClass="android.support.v7.widget.SearchView"    android:icon="@android:drawable/ic_menu_search"    android:orderInCategory="200"    app:showAsAction="ifRoom|collapseActionView"    android:title="search" />一直报不能识别我的showAsAction和actionViewClass。。。Error:(13) No resource identifier found for attribute 'showAsAction' in package 'com.niuniu.actionbar'Error:Execution failed for task ':app:processDebugResources'.> com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'E:\Android\AndroidEnvironment\SDK\Android SDK\build-tools\21.1.2\aapt.exe'' finished with non-zero exit value 1