问题描述：
　　　　　我用viewpage动态加载webview视图，显示没有问题，但是我想在点击webview页面时让 一个线性layout显示或隐藏。
代码编译没有错误，但是却实现不了效果。 设定代码在下面ViewPageAdapter的case MotionEvent.ACTION_UP:中，
直接上代码
Viewpage layout XML文件

<?xml version="1.0" encoding="utf-8"?>

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >

   

    <LinearLayout

        android:id="@+id/linearLayout02"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="vertical" >

	    <android.support.v4.view.ViewPager

	        android:id="@+id/guidePages"

	        android:layout_width="fill_parent"

	        android:layout_height="wrap_content"/>   	

	</LinearLayout>



</FrameLayout>

WEBviewLayout XML

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >



    <LinearLayout

        android:id="@+id/testline"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:background="#99CC00"

        android:orientation="horizontal" >



        <Button

            android:id="@+id/button1"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="Button" />



        <Button

            android:id="@+id/button2"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="Button" />

    </LinearLayout>

    	

<LinearLayout 

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin">



    <WebView

        android:id="@+id/webView1"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        />



</LinearLayout>



</LinearLayout>

JAVA主acitvity代码

package com.example.epubzipopen;



import java.util.ArrayList;

import android.annotation.SuppressLint;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.support.v4.view.ViewPager;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.view.Window;

import android.webkit.WebView;

import android.widget.LinearLayout;



public class MainActivity extends Activity {

	

	final int RIGHT = 0;

	final int LEFT = 1;

	private ViewPager viewPager;  

	private ViewGroup main;

	LayoutInflater inflater;

	private ArrayList<String> list1=new ArrayList<String>();

	private ViewPageAdapter viewpaperadapater;

	

	WebView wView; 

    @SuppressLint("SetJavaScriptEnabled") @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        requestWindowFeature(Window.FEATURE_NO_TITLE);



        Intent intent=getIntent();

        list1=intent.getStringArrayListExtra("PageList");



        viewPager = (ViewPager)findViewById(R.id.guidePages);

        

        viewpaperadapater= new ViewPageAdapter(this,list1);

        viewPager.setAdapter(viewpaperadapater); 

        viewPager.setOnPageChangeListener(viewpaperadapater); 

        viewPager.setCurrentItem(0); 

        

            

    }

    

}

WEBview数据动态显示 ViewPageAdapter代码

package com.example.epubzipopen;



import java.util.ArrayList;

import android.annotation.SuppressLint;

import android.content.Context;

import android.os.Environment;

import android.os.Parcelable;

import android.support.v4.view.PagerAdapter;

import android.support.v4.view.ViewPager;

import android.support.v4.view.ViewPager.OnPageChangeListener;

import android.view.LayoutInflater;

import android.view.MotionEvent;

import android.view.View;

import android.view.View.OnTouchListener;

import android.view.ViewGroup;

import android.webkit.WebChromeClient;

import android.webkit.WebSettings;

import android.webkit.WebView;

import android.widget.LinearLayout;



@SuppressLint("SetJavaScriptEnabled") public class ViewPageAdapter extends PagerAdapter implements OnPageChangeListener { 

	private Context context;

	private ArrayList<String> list=new ArrayList<String>();

	private LayoutInflater inflater; 

	private String commonFilepath="";



	public ViewPageAdapter (Context context, ArrayList<String> Data) {

	    this.list = Data;

	    inflater = LayoutInflater.from(context); 

	    commonFilepath=Environment.getExternalStorageDirectory().toString();

	    this.context = context;

	  }

	

	@Override

	public int getCount() {

		// TODO Auto-generated method stub

		return list != null ? list.size() : 0;

	}



	@Override

	public boolean isViewFromObject(View arg0, Object arg1) {

		// TODO Auto-generated method stub

		return arg0 == arg1;

	}

	

	@Override  

    public int getItemPosition(Object object) {  

        // TODO Auto-generated method stub  

        return super.getItemPosition(object);  

    }  

	

	@Override  

    public void destroyItem(View arg0, int arg1, Object arg2) {  

        // TODO Auto-generated method stub  

        ((ViewPager) arg0).removeView(arg0);  

    } 

	

	 @Override

	  public Object instantiateItem(ViewGroup view, int position) {

		 	View userLayout = inflater.inflate(R.layout.activity_main, null);

			WebView webview = (WebView)userLayout.findViewById(R.id.webView1);



			WebSettings wSet = webview.getSettings();     

			wSet.setJavaScriptEnabled(true); 

			wSet.setJavaScriptEnabled(true);  

			wSet.setBuiltInZoomControls(true);

			wSet.setSupportZoom(true);

			webview.requestFocusFromTouch();

			webview.setWebChromeClient(new WebChromeClient());

			String strHtmlPath="file://"+commonFilepath+"/Download/EpubZipOut/OEBPS/"+list.get(position);

	        webview.loadUrl(strHtmlPath);

	        webview.setOnTouchListener(new OnTouchListener() {  

				@SuppressLint("ClickableViewAccessibility") @Override

				public boolean onTouch(View arg0, MotionEvent arg1) {

					switch (arg1.getAction()) {  

	                case MotionEvent.ACTION_UP:

	                {

	                	// 设置的地方在这LOOK here

                                View userLayout = inflater.inflate(R.layout.activity_main, null);

	                	LinearLayout testline = (LinearLayout)userLayout.findViewById(R.id.testline);

	                	testline.setVisibility(View.GONE);

	                }

	                break;  

	                case  MotionEvent.ACTION_DOWN:  

	                    break;   

	                 case MotionEvent.ACTION_MOVE: 

	                    break;  

	                  default:  

	                	  return false;  

	            }

					return false;

				}  

	        }); 

		((ViewPager) view).addView(userLayout, 0); 

	    return userLayout;

	  }

	  @Override

	  public void restoreState(Parcelable state, ClassLoader loader) {}

	  @Override

	  public Parcelable saveState() {

	    return null;

	  }

	  @Override

	  public void startUpdate(View container) {}



	@Override

	public void onPageScrollStateChanged(int arg0) {

		// TODO Auto-generated method stub

		

	}



	@Override

	public void onPageScrolled(int arg0, float arg1, int arg2) {

		// TODO Auto-generated method stub

		

	}



	@Override

	public void onPageSelected(int arg0) {

		// TODO Auto-generated method stub

		

	}

}