可左右滑动的Tab页布局的好处在于，用单手左右滑动操作即可，而无须去点击切换Tab页。
效果如下:
实现步骤如下:
1. 在XML布局文件中指定ViewPager。
<?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" >
<android.support.v4.view.ViewPager
android:id="@+id/vPager"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1.0"
android:background="#000000"
android:flipInterval="30"
android:persistentDrawingCache="animation" />
</LinearLayout>
2. 直接上代码
工程中 ActionBarActivity 引用自android-support-v7-appcompat扩展包。
具体引用方法可参考点击打开链接
public class TabBar3Activity extends ActionBarActivity{
private ActionBar actionBar;
private ViewPager mPager;
private ArrayList<View> mViews = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tabbar);
//得到Bar
actionBar = getSupportActionBar();
//设置标题
actionBar.setTitle("ActionBar+ViewPager");
actionBar.setSubtitle("努力！");
//实现用户点击ActionBar 图标后返回前一个activity
actionBar.setDisplayHomeAsUpEnabled(true) ;
//定义ActionBar模式为NAVIGATION_MODE_TABS
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
actionBar.addTab(actionBar.newTab()
.setText("t1")
.setIcon(R.drawable.ic_launcher)
.setTabListener(MyBarTabListener));
actionBar.addTab(actionBar.newTab()
.setText("t2")
.setIcon(R.drawable.ic_launcher)
.setTabListener(MyBarTabListener));
mPager = (ViewPager)findViewById(R.id.vPager);
/*---------------------------------------------------------------------------
方法一:*/
/*
*
* LayoutInflater 用于找layout下xml布局文件，并且实例化
* 而findViewById()是找xml下具体的widget控件
* 所以这两个作用应用场景分别如下 ：
* 1.对于没有被载入或想要动态载入的界面，都需要inflate来载入
* 2.对于一个已经载入的Activity,则可以用 findViewById()来获得界面控制元素
*/
//将要分页显示的View装入数组中
LayoutInflater layFlater = LayoutInflater.from(this);
View view1 = layFlater.inflate(R.layout.activity_tabbar_page1, null);
View view2 = layFlater.inflate(R.layout.activity_tabbar_page2, null);
//每个页面的Title数据
mViews = new ArrayList<View>();
mViews.add(view1);
mViews.add(view2);
mPager.setAdapter(MyPagerAdapter);
mPager.setOnPageChangeListener(new MyPageScrollEvent());
mPager.setCurrentItem(0);
}
@SuppressLint("NewApi") @Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
//添加菜单项
MenuItem findItem = menu.add(0,1,0,"查找");
MenuItem exitItem = menu.add(0,0,0,"退出");
//绑定到ActionBar
findItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
exitItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
return true;
}
/**
* ActionBar上的Tab页更改
* http://developer.android.com/reference/android/app/ActionBar.TabListener.html
Public Methods
onTabReselected(ActionBar.Tab tab, FragmentTransaction ft)
Called when a tab that is already selected is chosen again by the user.
onTabSelected(ActionBar.Tab tab, FragmentTransaction ft)
Called when a tab enters the selected state.
onTabUnselected(ActionBar.Tab tab, FragmentTransaction ft)
Called when a tab exits the selected state.
*/
private final TabListener MyBarTabListener = new TabListener(){
private final static String TAG = "MyBarTabListener";
@Override
public void onTabReselected(Tab arg0, FragmentTransaction arg1) {
// TODO Auto-generated method stub
Log.d(TAG,"onTabReselected");
}
@Override
public void onTabSelected(Tab arg0, FragmentTransaction arg1) {
// TODO Auto-generated method stub
Log.d(TAG,"onTabSelected");
//当更改ActionBar上的Tab页有更改时，ViewPager显示相关的页面
if (mPager != null)
mPager.setCurrentItem(arg0.getPosition());
}
@Override
public void onTabUnselected(Tab arg0, FragmentTransaction arg1) {
// TODO Auto-generated method stub
Log.d(TAG,"onTabUnselected");
}
};
/**
* 填充ViewPager的数据适配器
*/
private final PagerAdapter MyPagerAdapter = new PagerAdapter() {
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == arg1;
}
@Override
public int getCount() {
return mViews.size();
}
@Override
public void destroyItem(View container, int position, Object object) {
((ViewPager)container).removeView(mViews.get(position));
}
//@Override
//public CharSequence getPageTitle(int position) {
//return titles.get(position);
//}
@Override
public Object instantiateItem(View container, int position) {
((ViewPager)container).addView(mViews.get(position));
return mViews.get(position);
}
};
/**
* 用于ViewPager滑动时触发.
*
* http://docs.eoeandroid.com/reference/android/support/v4/view/ViewPager.OnPageChangeListener.html
onPageScrollStateChanged(int state)
Called when the scroll state changes.
onPageScrolled(int position, float positionOffset, int positionOffsetPixels)
This method will be invoked when the current
page is scrolled, either as part of a programmatically initiated
smooth scroll or a user initiated touch scroll.
onPageSelected(int position)
This method will be invoked when a new page becomes selected.
*/
class MyPageScrollEvent implements OnPageChangeListener
{
private final static String TAG = "MyPageScrollEvent";
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
Log.d(TAG,"onPageScrollStateChanged");
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
Log.d(TAG,"onPageScrolled");
}
@Override
public void onPageSelected(int arg0) {
// TODO Auto-generated method stub
Log.d(TAG,"onPageSelected");
//当滑动ViewPager 换页时，将ActionBar上的Tab显示到对应页
actionBar.selectTab(actionBar.getTabAt(arg0));
}
}
/**
* 菜单事件响应
*/
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch (item.getItemId()) {
case 0:
//displayToast("退出菜单");
break;
case 1:
//displayToast("查找菜单");
break;
case android.R.id.home:
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
| Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
Toast.makeText(getApplicationContext(), "android.R.id.home", 0)
.show();
break;
default: //action_compose
break;
}
return super.onOptionsItemSelected(item);
}
}
