java - 无法使用字符串作为选项卡名称

Question

我正在遵循本教程，并希望使用字符串资源作为我的选项卡名称，但显然我在本教程中无法做到这一点。有谁知道这件事吗？

    public class MainActivity extends ActionBarActivity {

    // Declaring Your View and Variables

    Toolbar toolbar;
    ViewPager pager;
    ViewPagerAdapter adapter;
    SlidingTabLayout tabs;
    CharSequence Titles[]={"Home","Events"};
    int Numboftabs =2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        // Creating The Toolbar and setting it as the Toolbar for the activity

        toolbar = (Toolbar) findViewById(R.id.tool_bar);
        setSupportActionBar(toolbar);


        // Creating The ViewPagerAdapter and Passing Fragment Manager, Titles fot the Tabs and Number Of Tabs.
        adapter =  new ViewPagerAdapter(getSupportFragmentManager(),Titles,Numboftabs);

        // Assigning ViewPager View and setting the adapter
        pager = (ViewPager) findViewById(R.id.pager);
        pager.setAdapter(adapter);

        // Assiging the Sliding Tab Layout View
        tabs = (SlidingTabLayout) findViewById(R.id.tabs);
        tabs.setDistributeEvenly(true); // To make the Tabs Fixed set this true, This makes the tabs Space Evenly in Available width

        // Setting Custom Color for the Scroll bar indicator of the Tab View
        tabs.setCustomTabColorizer(new SlidingTabLayout.TabColorizer() {
            @Override
            public int getIndicatorColor(int position) {
                return getResources().getColor(R.color.tabsScrollColor);
            }
        });

        // Setting the ViewPager For the SlidingTabsLayout
        tabs.setViewPager(pager);
    }
}

Android Sliding Tabs with Material Design | Exoguru

Answer 1

要在 FragmentStatePagerAdapter 中使用 String 资源，您需要一个 Context，因此您需要更改该类的构造函数并传递一个 Context。

public ViewPagerAdapter(FragmentManager fm, int mNumbOfTabsumb, Context context) {
        super(fm);
        this.NumbOfTabs = mNumbOfTabsumb;
        this.context = context;

    }

因此，在 getPageTitle 中，您不需要返回 Titles[position]。

你可以这样做:

@Override
    public CharSequence getPageTitle(int position) {
        switch (position) {
            case FRAGMENT_1:
                return context.getResources().getString(R.string.some_string);
        }
        return super.getPageTitle(position);
    }

其中 FRAGMENT_1 是该类的常量。如果你不再使用你的标题，你可以从构造函数中删除它，因为我删除了它。