我正在使用 FragmentPagerAdapter 并且我想以不同的语言设置标题信息（“新闻、信息、帮助、会员资格” - 请参见下面的代码）。问题是如何从 res/values/strings.xml 中读取标题？
有人可以帮助我吗？
谢谢
汤姆
public class MainInfoViewPagerAdapter extends FragmentPagerAdapter implements PageIndicator
{
private String[] titles= new String[]
{
"News",
"Information",
"Help",
"Membership"
};
public MainInfoViewPagerAdapter( FragmentManager fm)
{
super(fm);
}
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>
如果您想要一种语言，只需添加另一个值文件夹，例如法语的 /values-fr/strings.xml。
您可以测试的另一种方法是这个。对于这个测试，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更改为不同的语言（英语/西班牙语）。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));
}
正如你在OnPageChangeListenerViewPager 中看到的，我调用了 action barsetSubtitle方法，所以每次用户选择一个新页面时，我的 action bar 的副标题都会改变，然后适配器：
/**
* 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;
}
}
我希望这可以帮助你！
我管理它创建一个私有SparseArray<String> TITLES;并在主 Activity 中的 OnCreate 函数上填充它，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));
最后在里面FragmentPagerAdapter做getTitle这样的事情：
@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！