关于ViewPager和WebView组合的问题

各位老大，我的java功底不太好，Android开发也刚刚开始接触，所以很多低级问题还请见谅。
我做一个程序 是这样的ViewPager控制了4个页面，然后每一个页面上都有一个WebView，我要实现的时，切换到不同的Pager的时候能够在WebView上显示不同的内容。之前出现一个指针错误，后来检查发现，原来WebView需要实例化出来，现在是错误不爆了，但是页面上没有内容显示，当然权限已经加了，本来考虑将窗体封装成一个独立类，因为java功底问题，想不到怎么做，给出代码，求各位大神指导。
package com.cnebai.tsmobile;import java.util.ArrayList;import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.util.Log;
import android.view.Display;
import android.view.LayoutInflater;
import android.view.View;
import android.view.WindowManager;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.widget.ImageView;/**
* @author Coolio
*
*/
@SuppressLint("SetJavaScriptEnabled")
public class MainActivity extends Activity {
    private static final String ACTIVITY_TAG = "Main";
    private ImageView mTabImg,mTab1,mTab2,mTab3,mTab4;
    private ViewPager mTabPager;
    private int currIndex = 0;// 当前页卡编号
    private int one;//单个水平动画位移
    private int two;
    private int three;
    private int zero = 0;// 动画图片偏移量
    private WebView wvMylove,wvFinancing,wvInvest,wvMember;
   
   
    /**
     * @See 主窗体
     * @param savedInstanceState
     */
    public void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated constructor stub
        
        super.onCreate(savedInstanceState);   
        setContentView(R.layout.main);
        
        //启动时关闭软键盘
        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
        
        
        mTabPager = (ViewPager)findViewById(R.id.tabpager);
        mTabPager.setOnPageChangeListener(new MyOnPageChangeListener());
        
        mTab1 = (ImageView) findViewById(R.id.img_love);
        mTab2 = (ImageView) findViewById(R.id.img_financing);
        mTab3 = (ImageView) findViewById(R.id.img_invest);
        mTab4 = (ImageView) findViewById(R.id.img_member);
        mTabImg = (ImageView) findViewById(R.id.img_tab_now);        wvMylove = (WebView) findViewById(R.id.myloveContent);
        wvMylove = new WebView(this);
        WebSettings webSettings = wvMylove.getSettings();   
        webSettings.setJavaScriptEnabled(true);
        webSettings.setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
        webSettings.setDefaultTextEncodingName("utf-8");
        
        wvMylove.loadUrl("http://wap.baidu.com");  
        
        
        //绑定点击事件
        mTab1.setOnClickListener(new OnClickMenuListener(0));
        mTab2.setOnClickListener(new OnClickMenuListener(1));
        mTab3.setOnClickListener(new OnClickMenuListener(2));
        mTab4.setOnClickListener(new OnClickMenuListener(3));
        
        //屏幕尺寸
        Display currDisplay = getWindowManager().getDefaultDisplay();//获取屏幕当前分辨率
        int displayWidth = currDisplay.getWidth();
        int displayHeight = currDisplay.getHeight();
        
        one = displayWidth/4; //设置水平动画平移大小
        two = one*2;
        three = one*3;
        
        Log.i(MainActivity.ACTIVITY_TAG, "获取的屏幕分辨率为" + one + two + three + "X" + displayHeight);
        
        LayoutInflater mLi = LayoutInflater.from(this);
        View view1 = mLi.inflate(R.layout.main_tab_mylove, null);
        View view2 = mLi.inflate(R.layout.main_tab_financing, null);
        View view3 = mLi.inflate(R.layout.main_tab_invest, null);
        View view4 = mLi.inflate(R.layout.main_tab_member, null);
        
        final ArrayList<View> views = new ArrayList<View>();
        views.add(view1);
        views.add(view2);
        views.add(view3);
        views.add(view4);
        
        PagerAdapter mPagerAdapter = new PagerAdapter() {
            
            @Override
            public boolean isViewFromObject(View arg0, Object arg1) {
                return arg0 == arg1;
            }
            
            @Override
            public int getCount() {
                return views.size();
            }            @Override
            public void destroyItem(View container, int position, Object object) {
                ((ViewPager)container).removeView(views.get(position));
            }
            
            
            @Override
            public Object instantiateItem(View container, int position) {
                ((ViewPager)container).addView(views.get(position));
                return views.get(position);
            }
            
            
            public void finishUpdate(View arg0) {
               
            }
            
            
        };
        
        mTabPager.setAdapter(mPagerAdapter);
        
        /*
        wvFinancing = (WebView) findViewById(R.id.financingContent);
        wvInvest = (WebView) findViewById(R.id.investContent);
        wvMember = (WebView) findViewById(R.id.memberContent);        
        */
    }
       /**
     * @see 菜单OnClick事件的侦听
     * @author Coolio
     *
     */
    public class OnClickMenuListener implements View.OnClickListener {
        private int index = 0;        public OnClickMenuListener(int i) {
            index = i;
        }
        @Override
        public void onClick(View v) {
            mTabPager.setCurrentItem(index);
   
        }
    }
   
    /* 页卡切换监听(原作者:D.Winter)
     */
    public class MyOnPageChangeListener implements OnPageChangeListener {
        @Override
        public void onPageSelected(int arg0) {
            
            Log.i(MainActivity.ACTIVITY_TAG,"onPageSelected" + Integer.toString(arg0));
            
            Animation animation = null;
            switch (arg0) {
            case 0:
                mTab1.setImageDrawable(getResources().getDrawable(R.drawable.tab_mylove_pressed));
                if (currIndex == 1) {
                    animation = new TranslateAnimation(one, 0, 0, 0);
                    mTab2.setImageDrawable(getResources().getDrawable(R.drawable.tab_financing_normal));
                } else if (currIndex == 2) {
                    animation = new TranslateAnimation(two, 0, 0, 0);
                    mTab3.setImageDrawable(getResources().getDrawable(R.drawable.tab_invest_normal));
                }
                else if (currIndex == 3) {
                    animation = new TranslateAnimation(three, 0, 0, 0);
                    mTab4.setImageDrawable(getResources().getDrawable(R.drawable.tab_member_normal));
                }
                break;
            case 1:
                mTab2.setImageDrawable(getResources().getDrawable(R.drawable.tab_financing_pressed));
                if (currIndex == 0) {
                    animation = new TranslateAnimation(zero, one, 0, 0);
                    mTab1.setImageDrawable(getResources().getDrawable(R.drawable.tab_mylove_normal));
                } else if (currIndex == 2) {
                    animation = new TranslateAnimation(two, one, 0, 0);
                    mTab3.setImageDrawable(getResources().getDrawable(R.drawable.tab_invest_normal));
                }
                else if (currIndex == 3) {
                    animation = new TranslateAnimation(three, one, 0, 0);
                    mTab4.setImageDrawable(getResources().getDrawable(R.drawable.tab_member_normal));
                }
                break;
            case 2:
                mTab3.setImageDrawable(getResources().getDrawable(R.drawable.tab_invest_pressed));
                if (currIndex == 0) {
                    animation = new TranslateAnimation(zero, two, 0, 0);
                    mTab1.setImageDrawable(getResources().getDrawable(R.drawable.tab_mylove_normal));
                } else if (currIndex == 1) {
                    animation = new TranslateAnimation(one, two, 0, 0);
                    mTab2.setImageDrawable(getResources().getDrawable(R.drawable.tab_financing_normal));
                }
                else if (currIndex == 3) {
                    animation = new TranslateAnimation(three, two, 0, 0);
                    mTab4.setImageDrawable(getResources().getDrawable(R.drawable.tab_member_normal));
                }
                break;
            case 3:
                mTab4.setImageDrawable(getResources().getDrawable(R.drawable.tab_member_pressed));
                if (currIndex == 0) {
                    animation = new TranslateAnimation(zero, three, 0, 0);
                    mTab1.setImageDrawable(getResources().getDrawable(R.drawable.tab_mylove_normal));
                } else if (currIndex == 1) {
                    animation = new TranslateAnimation(one, three, 0, 0);
                    mTab2.setImageDrawable(getResources().getDrawable(R.drawable.tab_financing_normal));
                }
                else if (currIndex == 2) {
                    animation = new TranslateAnimation(two, three, 0, 0);
                    mTab3.setImageDrawable(getResources().getDrawable(R.drawable.tab_invest_normal));
                }
                break;
            }
            currIndex = arg0;
            animation.setFillAfter(true);// True:图片停在动画结束位置
            animation.setDuration(150);
            mTabImg.startAnimation(animation);
        }        @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
            
        }
    }
}
ViewPager，WebView