I have a activity whose content view is a fragment, I added viewpager and viewpagerindicator to this activity. I created an FragmentPagerAdapter for the pager, the adapter constructs three fragments for displaying three tabs. But when I run the project, only see the pager title shows up. Why doesn`t the three fragments show up?
I created the pager and indicator on create of the Activity lifecycle.
public class BrowserActivity extends SherlockFragmentActivity
implements ReposFragment.OnFileSelectedListener, StarredFragment.OnStarredFileSelectedListener, OnBackStackChangedListener {
super.onCreate(savedInstanceState);
setContentView(R.layout.seadroid_main);
adapter = new SeafileTabsAdapter(getSupportFragmentManager());
pager = (ViewPager) findViewById(R.id.pager);
pager.setAdapter(adapter);
TabPageIndicator indicator = (TabPageIndicator)findViewById(R.id.indicator);
indicator.setViewPager(pager);
indicator.setOnPageChangeListener(new OnPageChangeListener() {
@Override
public void onPageSelected(final int position) {
currentPosition = position;
supportInvalidateOptionsMenu();
disableUpButton();
}
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
});
the adapter constructs three fragments for displaying three tabs view
class SeafileTabsAdapter extends FragmentPagerAdapter implements
IconPagerAdapter {
public SeafileTabsAdapter(FragmentManager fm) {
super(fm);
}
private ReposFragment reposFragment = null;
private ActivitiesFragment activitieFragment = null;
private StarredFragment starredFragment = null;
@Override
public Fragment getItem(int position) {
switch (position) {
case 0:
if (reposFragment == null) {
reposFragment = new ReposFragment();
}
return reposFragment;
case 1:
if (starredFragment == null) {
starredFragment = new StarredFragment();
}
return starredFragment;
case 2:
if (activitieFragment == null) {
activitieFragment = new ActivitiesFragment();
}
return activitieFragment;
default:
return new Fragment();
}
}
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return getString(R.string.tabs_library).toUpperCase();
case 1:
return getString(R.string.tabs_starred).toUpperCase();
case 2:
return getString(R.string.tabs_activity).toUpperCase();
default:
return null;
}
}
@Override
public int getIconResId(int index) {
return ICONS[index];
}
@Override
public int getCount() {
return ICONS.length;
}
}
the layout file seadroid_main.xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/fragment_container"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.viewpagerindicator.TabPageIndicator
android:id="@+id/indicator"
android:layout_height="wrap_content"
android:layout_width="match_parent"
/>
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
/>
UPDATE
I have found that ViewPager tutorials used LineaLayout as the root container. So is it necessary to change FragmentLayout to be LineaLayout here. When I changed to LineaLayout, the app crashed, and the log is
12-02 07:01:13.636: E/AndroidRuntime(3807): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.seafile.seadroid2/com.seafile.seadroid2.ui.activity.BrowserActivity}: android.view.InflateException: Binary XML file line #21: Error inflating class LineaLayout
12-02 07:01:13.636: E/AndroidRuntime(3807):at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2184)