[英]Error in ViewPager in Fragments
此行中顯示錯誤:mPageAdapter = new PageAdapter(this.getSupportFragmentManager(),fragment); 和錯誤是:更改為getFragmentManager()或創建方法getSupportFragmentManager()但我都做過,但是沒有用。 所以請大家幫我 需要改變什么。
// ProjectOverview類
public class ProjectOverview extends Activity {
private PageAdapter mPageAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.viewpages_layout);
initialingpaging();
}
private void initialingpaging() {
List<Fragment> fragments = new Vector<Fragment>();
fragments.add(Fragment.instantiate(this, Fragment1.class.getName()));
fragments.add(Fragment.instantiate(this, Fragment2.class.getName()));
fragments.add(Fragment.instantiate(this, Fragment3.class.getName()));
mPageAdapter = new PageAdapter(this.getSupportFragmentManager(), fragments);
ViewPager pager = (ViewPager)findViewById(R.id.viewpager);
pager.setAdapter(mPageAdapter);
}
}
// PageAdapter類
public final class PageAdapter extends FragmentPagerAdapter {
private List<Fragment> fragments;
public PageAdapter(FragmentManager fm, List<Fragment> fragments) {
super(fm);
// TODO Auto-generated constructor stub
this.fragments = fragments;
}
@Override
public Fragment getItem(int arg0) {
// TODO Auto-generated method stub
return this.fragments.get(arg0);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return this.fragments.size();
}
}
//viewpages_layout.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<android.support.v4.view.ViewPager
android:id="@+android:id/viewpager"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
</LinearLayout>
//Fragment1.class
public class Fragment1 extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
// TODO Auto-generated method stub
if(container == null)
{
return null;
}
return (LinearLayout) inflater.inflate(R.layout.fragment1_layout,container,false);
}
}
// Fragment2.class和Fragment3.class的相同代碼
如果要使用getSupportFragmentManager,請使用FragmentActivity擴展ProjectOverview。 它將起作用,這是支持庫的問題,您的片段應從支持庫導入。 已添加(選中):您的活動應擴展FragmentActivity
以便在僅針對較新的設備使用時(擴展活動)使用getSupportFragmentManager()
(在較舊的設備上): getFragmentManager()
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