                        课程
                    
                        /移动开发
                        
                            /Android
                        
                        /千变万化的ViewPager切换动画

提示错误：The markup in the document following the root element must be well-formed.

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />
	
	<android.support.v4.view.ViewPager
	    android:id="@+id/id_viewpager"
	    android:layout_width="match_parent"
	    android:layout_height="match_parent">
	</android.support.v4.view.ViewPager>

</RelativeLayout>

出错提示行在：<android.support.v4.view.ViewPager

求解决方法