问题
I am developing an App with android 2.1 package. I am using ActionBarSherlock to get the actionbar. Then i am trying to use one Viewpager with multilpe Fragments Class with its own layout.
But All i am getting is the first Fragment.
I also used the suggestion given in this question but no effect See the Question Here
Here is my MainActivity with ActionBar and Viewpager.
public class MainActivity extends SherlockFragmentActivity {
private static final int NUMBER_OF_PAGES = 2;
private MyFragmentPagerAdapter mMyFragmentPagerAdapter;
ActionBar actionBar;
ViewPager viewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
actionBar = getSupportActionBar();
actionBar.setHomeButtonEnabled(true);
//actionBar.setNavigationMode(actionBar.NAVIGATION_MODE_TABS);
viewPager = (ViewPager) findViewById(R.id.pager);
//viewPager.setOffscreenPageLimit(4);
mMyFragmentPagerAdapter = new MyFragmentPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mMyFragmentPagerAdapter);
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt("tab", getSupportActionBar().getSelectedNavigationIndex());
}
private static class MyFragmentPagerAdapter extends FragmentPagerAdapter {
public MyFragmentPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int index) {
Fragment f = new Fragment();
Log.d("index ", ""+index);
switch (index) {
case 0:
f = PageFragment.newInstance(index);
break;
case 1:
f = FragmentTwo.newInstance(index);
break;
default:
break;
}
return f;
}
@Override
public int getCount() {
return NUMBER_OF_PAGES;
}
}
}
Here is my one Fragment Class.
public class PageFragment extends SherlockFragment {
public static PageFragment newInstance(int title) {
PageFragment pageFragment = new PageFragment();
Bundle bundle = new Bundle();
bundle.putInt("title", title);
pageFragment.setArguments(bundle);
return pageFragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment, container, false);
TextView textView = (TextView) view.findViewById(R.id.textView1);
textView.setText("View # 01");
return view;
}
}
Here is one of My fragments in activity_main.xml XML
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_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=".MainActivity" >
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<fragment android:name="com.mzubair.test.PageFragment"
android:id="@+id/headlines_fragment"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="match_parent" />
<fragment android:name="com.mzubair.test.FragmentTwo"
android:id="@+id/headlines_fragment2"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="match_parent" />
回答1:
Remove the two fragment tags from your XML.
回答2:
Try this PagerAdapter (adapt it to your code), and remove those fragment from your layout you don't want your fragments to be added below or next to the viewpager :/
public class AdapterTabs extends FragmentPagerAdapter implements
ActionBar.TabListener, ViewPager.OnPageChangeListener {
private final Context mContext;
private final ActionBar mActionBar;
private final ViewPager mViewPager;
protected final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>();
static final class TabInfo {
protected final Class<?> clss;
protected final Bundle args;
TabInfo(Class<?> _class, Bundle _args) {
clss = _class;
args = _args;
}
}
public AdapterTabs(SherlockFragmentActivity activity, ViewPager pager) {
super(activity.getSupportFragmentManager());
mContext = activity;
mActionBar = activity.getSupportActionBar();
mViewPager = pager;
mViewPager.setAdapter(this);
mViewPager.setOnPageChangeListener(this);
}
public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) {
TabInfo info = new TabInfo(clss, args);
tab.setTag(info);
tab.setTabListener(this);
mTabs.add(info);
mActionBar.addTab(tab);
notifyDataSetChanged();
}
@Override
public int getCount() {
return mTabs.size();
}
@Override
public Fragment getItem(int position) {
TabInfo info = mTabs.get(position);
return Fragment.instantiate(mContext, info.clss.getName(), info.args);
}
public void onPageScrolled(int position, float positionOffset,
int positionOffsetPixels) {
}
public void onPageSelected(int position) {
mActionBar.setSelectedNavigationItem(position);
((SherlockFragmentActivity) mContext).supportInvalidateOptionsMenu();
}
public void onPageScrollStateChanged(int state) {
}
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// force l'appel de onOptionMenuPrepared
((SherlockFragmentActivity) mContext).supportInvalidateOptionsMenu();
Object tag = tab.getTag();
for (int i = 0; i < mTabs.size(); i++) {
if (mTabs.get(i) == tag) {
mViewPager.setCurrentItem(i);
}
}
}
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
}
public void onTabReselected(Tab tab, FragmentTransaction ft) {
}
}
来源：https://stackoverflow.com/questions/15311126/android-multiple-fragments-with-viewpager-and-abs