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我想實現微調以更改我的選項卡。 我從here複製了此代碼，並作了一個包含帶有微調工具欄的工具欄的更改。如何使用微調器更改TABS
我相信我需要爲微調器實現一個偵聽器，也許是一個setOnItemSelectedListener，但問題是如何更改與微調器上選擇的項目位置的選項卡？
public class MainActivity extends FragmentActivity {
/**
* The {@link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a
* {@link android.support.v4.app.FragmentPagerAdapter} derivative, which
* will keep every loaded fragment in memory. If this becomes too memory
* intensive, it may be best to switch to a
* {@link android.support.v4.app.FragmentStatePagerAdapter}.
*/
SectionsPagerAdapter mSectionsPagerAdapter;
/**
* The {@link ViewPager} that will host the section contents.
*/
ViewPager mViewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Create the adapter that will return a fragment for each of the three
// primary sections of the app.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbarListaJogos);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowTitleEnabled(false);
Spinner sp = (Spinner) findViewById(R.id.spinner_nav);
List<String> listaMenu = new ArrayList<>();
listMenu.add("Section 1");
listMenu.add("Section 2");
listMenu.add("Section 3");
ArrayAdapter<String> adapter =
\t \t new ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, listaMenu);
sp.setAdapter(adapter);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
/**
* A {@link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a DummySectionFragment (defined as a static inner class
// below) with the page number as its lone argument.
Fragment fragment = new DummySectionFragment();
Bundle args = new Bundle();
args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, position + 1);
fragment.setArguments(args);
return fragment;
}
@Override
public int getCount() {
// Show 3 total pages.
return 3;
}
@Override
public CharSequence getPageTitle(int position) {
Locale l = Locale.getDefault();
switch (position) {
case 0:
return getString(R.string.title_section1).toUpperCase(l);
case 1:
return getString(R.string.title_section2).toUpperCase(l);
case 2:
return getString(R.string.title_section3).toUpperCase(l);
}
return null;
}
}
/**
* A dummy fragment representing a section of the app, but that simply
* displays dummy text.
*/
public static class DummySectionFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
public static final String ARG_SECTION_NUMBER = "section_number";
public DummySectionFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main_dummy, container, false);
TextView dummyTextView = (TextView) rootView.findViewById(R.id.section_label);
dummyTextView.setText(Integer.toString(getArguments().getInt(ARG_SECTION_NUMBER)));
return rootView;
}
}
}佈局XML爲在MainActivity：
<?xml version="1.0" encoding="utf-8"?>
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res/br.com.pixells.simuladorbr"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<android.support.v7.widget.Toolbar
\t \t xmlns:android="http://schemas.android.com/apk/res/android"
\t \t android:id="@+id/toolbarListaJogos"
\t \t android:layout_width="match_parent"
\t \t android:layout_height="wrap_content"
\t \t android:background="#DC143C"
\t \t app:subtitle="Teste"
\t \t app:theme="@style/Theme.Abar.Widget"
\t \t app:title="ToolBar">
<Spinner
android:id="@+id/spinner_nav"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</android.support.v7.widget.Toolbar>
\t \t <android.support.v4.view.ViewPager
\t \t xmlns:android="http://schemas.android.com/apk/res/android"
\t \t \t android:id="@+id/pager"
\t \t \t android:layout_width="match_parent"
\t \t \t android:layout_height="match_parent"
\t \t \t tools:context=".MainActivity" >
\t \t
\t \t
\t \t
<!--
This title strip will display the currently visible page title, as well as the page
titles for adjacent pages.
-->
\t \t
\t \t \t <android.support.v4.view.PagerTitleStrip
\t \t \t \t android:id="@+id/pager_title_strip"
\t \t \t \t android:layout_width="match_parent"
\t \t \t \t android:layout_height="wrap_content"
\t \t \t \t android:layout_gravity="top"
\t \t \t \t android:background="#33b5e5"
\t \t \t \t android:paddingBottom="4dp"
\t \t \t \t android:paddingTop="4dp"
\t \t \t \t android:textColor="#fff" />
\t \t
\t \t
\t \t </android.support.v4.view.ViewPager>
</LinearLayout>
使用此標籤模型不可行嗎？ – caezar 2014-12-05 15:20:44
多張貼：http://pt.stackoverflow.com/questions/42959/como-posso-alternar-tabs-usando-um-spinner – pnuts 2015-11-05 20:12:03