android:layout_weight="1"> 　　上面有提到，ViewPager需要实现一个Pageradapter，很简单继承FragmentPagerAdapter,实现里面的getItem()和 getCount()方法即可。 ViewPagerFragmentAdapter .java package com.example.administrator.viewpagerl; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentPagerAdapter; import android.util.Log; import java.util.ArrayList; import java.util.List; public class ViewPagerFragmentAdapter extends FragmentPagerAdapter { private List mList = new ArrayList(); public ViewPagerFragmentAdapter(FragmentManager fm , List list) { super(fm); this.mList = list; } @Override public Fragment getItem(int position) { return mList.get(position); } @Override public int getCount() { return mList != null ? mList.size() : 0; } } 　　ViewPager的每个Pager都需要一个Fragment,Fragment会实例化布局，显示在ViewPager的每个Pager中 ChatFragment.java package com.example.administrator.fragment; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.TextView; import com.example.administrator.viewpagerl.R; public class ChatFragment extends Fragment { View mView; @Nullable @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { if (mView == null) { mView = inflater.inflate(R.layout.fragment_layout,null); } ((TextView)mView.findViewById(R.id.mTextView)).setText("聊天界面"); return mView; } } 　　这里需要三个Fragment,因为这里使用的布局很简单，三个布局基本是一致的，FriendFragment、FindFragment 这里就 都不贴出代码了。微信里面的聊天列表，朋友列表都是在Fragment里面实例化的布局里有个ListView,通过ListView的方式实现 的，这里只是为了记录ViewPager就没有实现那些，有兴趣的可以自己搞搞，其实也不难。 　　在Activity里面只需要给ViewPager设置上面那个Adapter,设置一个监听知道Pager如何变化即可。点击最下面微信、朋 友、发现三个按钮，通过ViewPager的setCurrentItem()方法就能跳转到对应的Pager，除了这些还有就是通过一些简单的逻 辑，控制一下界面的改变就行，没有太难的东西。 

MainActivity.java package com.example.administrator.viewpagerl; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.view.ViewPager; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.LinearLayout; import android.widget.TextView; import com.example.administrator.fragment.ChatFragment; import com.example.administrator.fragment.FindFragment; import com.example.administrator.fragment.FriendFragment; import java.util.ArrayList; import java.util.List; public class MainActivity extends AppCompatActivity implements View.OnClickListener { private static final String TAG = "MainActivity.TAG"; TextView titleTextView; public LinearLayout firstLinearLayout; public LinearLayout secondLinearLayout; public LinearLayout threeLinearLayout; ViewPager mViewPager; ViewPagerFragmentAdapter mViewPagerFragmentAdapter; FragmentManager mFragmentManager; String[] titleName = new String[] {"微信","朋友","发现"}; List mFragmentList = new ArrayList(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mFragmentManager = getSupportFragmentManager(); setContentView(R.layout.activity_main); initFragmetList(); mViewPagerFragmentAdapter = new ViewPagerFragmentAdapter(mFragmentManager,mFragmentList); initView(); initViewPager(); } @Override protected void onResume() { super.onResume(); } public void initViewPager() { mViewPager.addOnPageChangeListener(new ViewPagetOnPagerChangedLisenter()); mViewPager.setAdapter(mViewPagerFragmentAdapter); mViewPager.setCurrentItem(0); titleTextView.setText(titleName[0]); updateBottomLinearLayoutSelect(true,false,false); } public void initFragmetList() { Fragment chat = new ChatFragment(); Fragment friend = new FriendFragment(); Fragment find = new FindFragment(); mFragmentList.add(chat); mFragmentList.add(friend); mFragmentList.add(find); } public void initView() { titleTextView = (TextView) findViewById(R.id.ViewTitle); mViewPager = (ViewPager) findViewById(R.id.ViewPagerLayout); firstLinearLayout = (LinearLayout) findViewById(R.id.firstLinearLayout); firstLinearLayout.setOnClickListener(this); secondLinearLayout = (LinearLayout) findViewById(R.id.secondLinearLayout); secondLinearLayout.setOnClickListener(this); threeLinearLayout = (LinearLayout) findViewById(R.id.threeLinearLayout); threeLinearLayout.setOnClickListener(this); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.firstLinearLayout: mViewPager.setCurrentItem(0); updateBottomLinearLayoutSelect(true,false,false); break; case R.id.secondLinearLayout: mViewPager.setCurrentItem(1); updateBottomLinearLayoutSelect(false,true,false); break; case R.id.threeLinearLayout: mViewPager.setCurrentItem(2); 

updateBottomLinearLayoutSelect(false,false,true); break; default: break; } } private void updateBottomLinearLayoutSelect(boolean f, boolean s, boolean t) { firstLinearLayout.setSelected(f); secondLinearLayout.setSelected(s); threeLinearLayout.setSelected(t); } class ViewPagetOnPagerChangedLisenter implements ViewPager.OnPageChangeListener { @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { // Log.d(TAG,"onPageScrooled"); } @Override public void onPageSelected(int position) { Log.d(TAG,"onPageSelected"); boolean[] state = new boolean[titleName.length]; state[position] = true; titleTextView.setText(titleName[position]); updateBottomLinearLayoutSelect(state[0],state[1],state[2]); } @Override public void onPageScrollStateChanged(int state) { Log.d(TAG,"onPageScrollStateChanged"); } } } 以上所述是小编给大家介绍的ViewPager 与 Fragment相结合实现微信界面实例代码，希望对大家有所帮助，如果大家有任何 疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对软件开发网网站的支持！ 您可能感兴趣的文章:ViewPager+RadioGroup仿微信主界面Android UI设计与开发之ViewPager仿微信引导界面以及动画效果 您可能感兴趣的文章 使用ViewPage+Fragment仿微信界面