这个 ActionBar 是导航部分的内容,它可以设置导航的模式为tab的模式,可以添加tab到actionbar中
步骤如下:
0:正常的ViewPager 和Fragment的显示,
1:设置ActionBar
2:实现ActionBar和ViewPager的联动。
具体:
0:创建Fragment
1:创建布局
<?xml version="1.0" encoding="utf-8"?> <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:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"><android.support.v4.view.ViewPager android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/viewPager"></android.support.v4.view.ViewPager> </RelativeLayout>
2:创建adatper,但是这里不用getPagerTitle了
package tech.androidstudio.actionbarviewpagerfragment;import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentPagerAdapter;import java.util.List;/** * Created by Kodulf on 2016/3/14. */ public class ActionBarFragmentPagerAdapter extends FragmentPagerAdapter {List<Fragment> list;public ActionBarFragmentPagerAdapter(FragmentManager fm, List<Fragment> list) {super(fm);this.list = list;}@Override public Fragment getItem(int position) {return list.get(position);}@Override public int getCount() {return list.size();} }
4:在MainActivity 里面实现联动,其中报错获取actionBar,获取Tab,等
package tech.androidstudio.actionbarviewpagerfragment;import android.support.v4.app.Fragment; import android.support.v4.app.FragmentTransaction; import android.support.v4.view.ViewPager; import android.support.v7.app.ActionBar; import android.support.v7.app.AppCompatActivity; import android.os.Bundle;import java.util.ArrayList; import java.util.List;public class MainActivity extends AppCompatActivity implements ActionBar.TabListener, ViewPager.OnPageChangeListener {private ActionBar mActionBar;private ViewPager mViewPager;private ActionBar.Tab mTab0;private ActionBar.Tab mTab1;private ActionBar.Tab mTab2;@Override protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mViewPager = (ViewPager)findViewById(R.id.viewPager);List<Fragment> mList = new ArrayList<Fragment>();mList.add(new FristFragment());mList.add(new SecondFragment());mList.add(new ThirdFragment());ActionBarFragmentPagerAdapter adapter = new ActionBarFragmentPagerAdapter(getSupportFragmentManager(),mList);mViewPager.setAdapter(adapter);mViewPager.setOnPageChangeListener(this);//获取支持保重的 actionBar, mActionBar = getSupportActionBar();if(mActionBar !=null){//设置actionBar的导航模式为ActionBar.NAVIGATION_MODE_TABS //然后通过ActionBar.newTab()方法来获取 新的 Tab,然后设置tab的 文字和监听器。最后添加到ActionBar里去 mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);mTab0 = mActionBar.newTab();mTab0.setText("财经");mTab0.setTabListener(this);mActionBar.addTab(mTab0);mTab1 = mActionBar.newTab();mTab1.setText("体育");mTab1.setTabListener(this);mActionBar.addTab(mTab1);mTab2 = mActionBar.newTab();mTab2.setText("娱乐");mTab2.setTabListener(this);mActionBar.addTab(mTab2);}}//在 Tab的 回调方法 里面设置viewPager显示的页面 @Override public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {switch (tab.getPosition()){case 0:mViewPager.setCurrentItem(0);break;case 1:mViewPager.setCurrentItem(1);break;case 2:mViewPager.setCurrentItem(2);break;}}@Override public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction ft) {}@Override public void onTabReselected(ActionBar.Tab tab, FragmentTransaction ft) {}@Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {}//在ViewPager的 回调方法里面设置 actionbar应该显示的tab @Override public void onPageSelected(int position) {switch (position){case 0:mActionBar.selectTab(mTab0);break;case 1:mActionBar.selectTab(mTab1);break;case 2:mActionBar.selectTab(mTab2);break;}}@Override public void onPageScrollStateChanged(int state) {} }