Android仿微信界面--使用FragmentPagerAdapter,viewpager实现(慕课网笔记)

来自慕课网：http://www.imooc.com/video/5904

使用FragmenPagerAdapter和viewpager实现微信界面，与http://blog.csdn.net/hnyzwtf/article/details/50296013不同的是，可以左右滑动切换聊天界面；

效果图：

总体设计：一个标题栏top.xml,一个底部导航栏bottom.xml，中间内容显示区域使用viewpager实现，每一个导航按钮对应一个布局文件，微信按钮对应tab01.xml,朋友对应tab02.xml,通讯录对应tab03.xml,设置对应tab04.xml，每一个布局用fragment实现分别是WeixinFragment,FrdFragment,AddressFragment,SettingFragment，通过适配器fragmentPagerAdapter将4个布局的fragment和viewpager关联起来，从而利用viewpager就可以滑动切换内容区域了。

1 布局文件设计

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    >   <include layout="@layout/top"/>   <android.support.v4.view.ViewPager       android:id="@+id/id_viewpager"       android:layout_width="match_parent"       android:layout_height="0dp"       android:layout_weight="1">          </android.support.v4.view.ViewPager>           <include layout="@layout/bottom"/></LinearLayout>

其他布局和上述提到的另一篇布局一样

2 MainActivity

package com.example.imooc_tab03;import java.util.ArrayList;import java.util.List;import android.app.Activity;import android.os.Bundle;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentActivity;import android.support.v4.app.FragmentPagerAdapter;import android.support.v4.view.ViewPager;import android.support.v4.view.ViewPager.OnPageChangeListener;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.view.Window;import android.widget.ImageButton;import android.widget.LinearLayout;public class MainActivity extends FragmentActivity implements OnClickListener {private ViewPager viewpager;private FragmentPagerAdapter mAdapter;//Fragment适配器，viewpager的适配器private List<Fragment> mFragments;//适配器的数据源private LinearLayout mTabWeixin;private LinearLayout mTabFrd;private LinearLayout mTabAddress;private LinearLayout mTabSetting;private ImageButton mImgWeixin;private ImageButton mImgFrd;private ImageButton mImgAddress;private ImageButton mImgSetting;private Fragment mTab01;private Fragment mTab02;private Fragment mTab03;private Fragment mTab04;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.activity_main);initView();initEvent();setSelect(0);}private void initEvent() {mTabWeixin.setOnClickListener(this);mTabFrd.setOnClickListener(this);mTabAddress.setOnClickListener(this);mTabSetting.setOnClickListener(this);}private void initView() {viewpager = (ViewPager) findViewById(R.id.id_viewpager);mTabWeixin = (LinearLayout) findViewById(R.id.id_tab_weixin);mTabFrd = (LinearLayout) findViewById(R.id.id_tab_frd);mTabAddress = (LinearLayout) findViewById(R.id.id_tab_address);mTabSetting = (LinearLayout) findViewById(R.id.id_tab_setting);mImgWeixin = (ImageButton)findViewById(R.id.id_tab_weixin_img);mImgFrd = (ImageButton)findViewById(R.id.id_tab_frd_img);mImgAddress = (ImageButton)findViewById(R.id.id_tab_address_img);mImgSetting = (ImageButton)findViewById(R.id.id_tab_setting_img);mFragments = new ArrayList<Fragment>();//初始化数据源mTab01 = new WeixinFragment();mTab02 = new FrdFragment();mTab03 = new AddressFragment();mTab04 = new SettingFragment();//将4个fragment添加到数据源中mFragments.add(mTab01);mFragments.add(mTab02);mFragments.add(mTab03);mFragments.add(mTab04);//初始化适配器mAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {@Overridepublic int getCount() {// TODO Auto-generated method stubreturn mFragments.size();}@Overridepublic Fragment getItem(int arg0) {// TODO Auto-generated method stubreturn mFragments.get(arg0);//通过位置返回不同的fragment}};/* * Android中可变的控件，比如ViewPager，listview,gridview，一个控件对应一个适配器，一个适配器对应一系列的数据源 * 数据源一般都是一个list *  * */viewpager.setAdapter(mAdapter);//为viewpager设置一个适配器//实现当viewpager滑动时（滑动页面改变）底部的导航按钮同步改变viewpager.setOnPageChangeListener(new OnPageChangeListener() {@Overridepublic void onPageSelected(int arg0) {int currentItem = viewpager.getCurrentItem();setTab(currentItem);}@Overridepublic void onPageScrolled(int arg0, float arg1, int arg2) {// TODO Auto-generated method stub}@Overridepublic void onPageScrollStateChanged(int arg0) {// TODO Auto-generated method stub}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {// Handle action bar item clicks here. The action bar will// automatically handle clicks on the Home/Up button, so long// as you specify a parent activity in AndroidManifest.xml.int id = item.getItemId();if (id == R.id.action_settings) {return true;}return super.onOptionsItemSelected(item);}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.id_tab_weixin:setSelect(0);break;case R.id.id_tab_frd:setSelect(1);break;case R.id.id_tab_address:setSelect(2);break;case R.id.id_tab_setting:setSelect(3);break;default:break;}}/* * 将图片设置为亮色的；切换显示内容的fragment * */private void setSelect(int i) {setTab(i);//alt + shift + m可以提取选择的代码为方法viewpager.setCurrentItem(i);}private void setTab(int i) {resetImg();switch (i) {case 0:mImgWeixin.setImageResource(R.drawable.tab_weixin_pressed);break;case 1:mImgFrd.setImageResource(R.drawable.tab_find_frd_pressed);break;case 2:mImgAddress.setImageResource(R.drawable.tab_address_pressed);break;case 3:mImgSetting.setImageResource(R.drawable.tab_settings_pressed);break;default:break;}}private void resetImg() {mImgWeixin.setImageResource(R.drawable.tab_weixin_normal);mImgFrd.setImageResource(R.drawable.tab_find_frd_normal);mImgAddress.setImageResource(R.drawable.tab_address_normal);mImgSetting.setImageResource(R.drawable.tab_settings_normal);}}

源代码在这里：http://download.csdn.net/detail/hnyzwtf/9359371