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功能：
1.主页面布局：
<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="com.example.androidui.ViewPagerFixedTitleActivity" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" > <TextView android:id="@+id/textView1" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center" android:text="标题1" /> <TextView android:id="@+id/textView2" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center" android:text="标题2" /> <TextView android:id="@+id/textView3" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center" android:text="标题3" /> </LinearLayout> <android.support.v4.view.ViewPager android:id="@+id/vp_pager" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_margin="15dp" > </android.support.v4.view.ViewPager> </RelativeLayout>
2.为显示每个ViewPager页面新建xml文件：vp_page1.xml，vp_page2.xml，vp_page3.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:gravity="center" android:text="TextView2" /> </LinearLayout>
3.字体颜色配置文件colors.xml：
<?xml version="1.0" encoding="utf-8"?> <resources> <color name="selected">#99D7FF</color> <color name="unselected">#FA646C</color> </resources>
4.Activity类：
public class ViewPagerFixedTitleActivity extends Activity implements OnClickListener { private TextView tv1; private TextView tv2; private TextView tv3; private ViewPager viewPager; private int selectedColor; private int unSelectedColor; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_view_pager_fixed_title); tv1 = (TextView) findViewById(R.id.textView1); tv2 = (TextView) findViewById(R.id.textView2); tv3 = (TextView) findViewById(R.id.textView3); tv1.setOnClickListener(this); tv2.setOnClickListener(this); tv3.setOnClickListener(this); // 获取颜色资源 selectedColor = getResources().getColor(R.color.selected); unSelectedColor = getResources().getColor(R.color.unselected); // 设置初次显示时字体颜色 tv1.setBackgroundColor(unSelectedColor); tv2.setBackgroundColor(unSelectedColor); tv3.setBackgroundColor(unSelectedColor); viewPager = (ViewPager) findViewById(R.id.vp_pager); // 初始化子页面 LayoutInflater inflater = getLayoutInflater(); View view1 = inflater.inflate(R.layout.vp_page1, null); View view2 = inflater.inflate(R.layout.vp_page2, null); View view3 = inflater.inflate(R.layout.vp_page3, null); // 添加进list List<View> views = new ArrayList<View>(); views.add(view1); views.add(view2); views.add(view3); MyViewPagerAdapter adapter = new MyViewPagerAdapter(views); viewPager.setAdapter(adapter); // 为ViewPager添加监听器 viewPager.addOnPageChangeListener(new OnPageChangeListener() { @Override public void onPageSelected(int position) { if (position == 0) { // 设置标题1被选中，其他的不选中 tv1.setBackgroundColor(selectedColor); tv2.setBackgroundColor(unSelectedColor); tv3.setBackgroundColor(unSelectedColor); } else if (position == 1) { // 标题2 tv2.setBackgroundColor(selectedColor); tv1.setBackgroundColor(unSelectedColor); tv3.setBackgroundColor(unSelectedColor); } else if (position == 2) { // 标题3 tv3.setBackgroundColor(selectedColor); tv2.setBackgroundColor(unSelectedColor); tv1.setBackgroundColor(unSelectedColor); } } @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { } @Override public void onPageScrollStateChanged(int state) { } }); } class MyViewPagerAdapter extends PagerAdapter { private List<View> views; public MyViewPagerAdapter() { } public MyViewPagerAdapter(List<View> views) { this.views = views; } @Override public int getCount() { return views.size(); } @Override public boolean isViewFromObject(View view, Object object) { return view == object; } @Override public Object instantiateItem(View container, int position) { View view = views.get(position); ViewPager viewPager = (ViewPager) container; viewPager.addView(view); return view; } @Override public void destroyItem(ViewGroup container, int position, Object object) { View view = views.get(position); ViewPager viewPager = (ViewPager) container; viewPager.removeView(view); } } // 标题栏点击事件 @Override public void onClick(View v) { int id = v.getId(); switch (id) { case R.id.textView1: viewPager.setCurrentItem(0); break; case R.id.textView2: viewPager.setCurrentItem(1); break; case R.id.textView3: viewPager.setCurrentItem(2); break; default: break; } } }
重写public Object instantiateItem(View container, int position)方法还是重写 public Object instantiateItem(ViewGroup container, int position)方法没有实际区别，因为public Object instantiateItem(ViewGroup container, int position)方法内部调用的还是public Object instantiateItem(View container, int position)
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原文地址：http://www.cnblogs.com/mada0/p/4827161.html
