Question

我正在使用FragmentPagerAdapter，我想用不同的语言设置标题信息（“新闻，信息，帮助，记忆” - 见下面的代码）。问题是如何从res / values / strings.xml中读取标题？

有人可以帮助我吗？

由于

汤姆

public class MainInfoViewPagerAdapter extends FragmentPagerAdapter implements    PageIndicator
{
private String[] titles= new String[]
        {          
        "News",          
        "Information",         
        "Help",
        "Membership"
        };   
public MainInfoViewPagerAdapter( FragmentManager fm) 
{
    super(fm);
}

Answer 1

这就是我解决它的方法：

在适配器中：

public class TitleAdapter extends FragmentPagerAdapter {
    private String titles[];
    private Fragment frags[];

    public TitleAdapter(FragmentManager fm, Context context) {
                super(fm);

                Resources resources = context.getResources();
                titles = resources.getStringArray(R.array.titles);

                frags = new Fragment[titles.length]; 

                frags[0] = new NewsFragment();
                frags[1] = new ArtistsFragment();
                frags[2] = new InfoFragment();
                frags[3] = new EatDrinkFragment();

         ....

/values/arrays.xml看起来像这样：

<string-array name="titles">
        <item>NEWS</item>
        <item>ARTISTS</item>
        <item>INFORMATION</item>
        <item>EAT AND DRiNK</item>
    </string-array>

如果你想要一种语言，只需添加另一个值文件夹，例如/values-fr/strings.xml，例如法语。

Answer 2

我管理它创建私有SparseArray<String> TITLES;并将其填入主Activity中的OnCreate函数，如下所示：

   TITLES = new SparseArray<String>();
    TITLES.put(KEY_FRAGMENT,
            getResources().getString(R.string.subtitle_keys));
    TITLES.put(CERTIFICATE_FRAGMENT,
            getResources().getString(R.string.subtitle_cert));
    TITLES.put(TRUST_NETWORK_FRAGMENT,
            getResources().getString(R.string.subtitle_trust_network));
    TITLES.put(CRL_FRAGMENT, getResources()
            .getString(R.string.subtitle_crl));
    TITLES.put(SECURE_FRAGMENT,
            getResources().getString(R.string.subtitle_secure));
    TITLES.put(SETTINGS_FRAGMENT,
            getResources().getString(R.string.subtitle_settings));

最后FragmentPagerAdapter getTitle做了类似的事情：

  @Override
    public CharSequence getPageTitle(int position) {
        switch (position) {
        case 0:
            // Fragment of the app is the Key Management.
            return TITLES.get(position);
        case 1:
            // Fragment of the app is the Certificate Management.
            return TITLES.get(position);

        case 2:
            // Fragment of the app is the Trust Network Management.
            return TITLES.get(position);

        case 3:
            // Fragment of the app is the CRL Management.
            return TITLES.get(position);

        default:
            return TITLES.get(position);
        }
    }

也许它不是最好的方式，但它是一种方式！

Answer 3

你能测试的另一个方法就是这个。对于此测试，我创建了一个带有选项卡的活动，每次用户选择一个选项卡时，操作栏中的字幕都会使用不同的语言（英语/西班牙语）进行更改。所以我猜你的Activity结构是这样的：

MainActivity extends FragmentActivity
- In this class you have one ViewPager and one PagerAdapter as attributes
- PagerAdapter is a inner class inside MainActivity.

代码是这样的，首先是主要活动：

 public class TrustNetworkActivity extends FragmentActivity implements
        ActionBar.TabListener {
AppSectionsPagerAdapter mAppSectionsPagerAdapter;
private SparseArray<String> TITLES;
ViewPager mViewPager;
/** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        DataBaseDictionary.PACKAGE_NAME = getApplicationContext()
                .getPackageName();
        //Loads the data base
        initDBLoader(this);
        fillSubtitlesArray();
        // Create the adapter that will return a fragment for each of the three
        // primary sections
        // of the app.
        mAppSectionsPagerAdapter = new AppSectionsPagerAdapter(
                getSupportFragmentManager());

        // Set up the action bar.
        final ActionBar ab = getSupportActionBar();
        // ab.setDisplayHomeAsUpEnabled(Boolean.TRUE);
        ab.setSubtitle(TITLES.get(KEY_FRAGMENT));
        ab.setDisplayShowTitleEnabled(true);

        // Set up the ViewPager, attaching the adapter and setting up a listener
        // for when the user swipes between sections.
        mViewPager = (ViewPager) findViewById(R.id.pager);
        mViewPager.setAdapter(mAppSectionsPagerAdapter);
        mViewPager
                .setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
                    @Override
                    public void onPageSelected(int position) {
                        // When swiping between different app sections, select
                        // the corresponding tab.
                        // We can also use ActionBar.Tab#select() to do this if
                        // we have a reference to the
                        // Tab.
                        ab.setSubtitle(TITLES.get(position));
                        ab.setSelectedNavigationItem(position);
                    }
                });

        ab.addTab(ab.newTab().setText("").setIcon(R.drawable.ic_menu_keys)
                .setTabListener(this));
        ab.addTab(ab.newTab().setText("").setIcon(R.drawable.ic_menu_cert)
                .setTabListener(this));
        ab.addTab(ab.newTab().setText("")
                .setIcon(R.drawable.ic_menu_trust_network).setTabListener(this));
        ab.addTab(ab.newTab().setText("").setIcon(R.drawable.ic_menu_crl)
                .setTabListener(this));
ab.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
}

/**
     * Fills the subtitle array with the resource strings, so it would be
     * multilanguage
     */
    private void fillSubtitlesArray() {
        TITLES = new SparseArray<String>();
        TITLES.put(0,
                getResources().getString(R.string.subtitle_keys));
        TITLES.put(1,
                getResources().getString(R.string.subtitle_cert));
        TITLES.put(2,
                getResources().getString(R.string.subtitle_trust_network));
        TITLES.put(3, getResources()
                .getString(R.string.subtitle_crl));
        TITLES.put(4,
                getResources().getString(R.string.subtitle_secure));
        TITLES.put(5,
                getResources().getString(R.string.subtitle_settings));

    }

正如您在ViewPager的OnPageChangeListener中看到的那样，我调用了操作栏setSubtitle方法，因此，每次用户选择新页面时，我的操作栏的字幕都会更改，然后是适配器：

   /**
 * A {@link FragmentPagerAdapter} that returns a fragment corresponding to
 * one of the primary sections of the app.
 */
public class AppSectionsPagerAdapter extends FragmentStatePagerAdapter {

    public AppSectionsPagerAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int i) {
        switch (i) {
        case 0:
            // Fragment of the app
            return new Fragment1();
        case 1:
            // Fragment of the app
            return new Fragment2();

        case 2:
            // Fragment of the app
            return new Fragment3();

        case 3:
            // Fragment of the app
            return new Fragment4();

        default:
            return new Fragment5();
        }
    }

    @Override
    public int getCount() {
        return 4;
    }
}

我希望这可以帮到你！

fragmentpageradapter中的多语言标题

3 个答案: