onTabSelected更改片段

Question

我想改变片段onTabSelected.

因为此刻,如果你滑动过渡工作正常.但是如果单击Tab,则片段不会切换.将Tab被强调,但内容保持不变.

问题出在我的onTabSelected方法上.我需要一个关于如何切换到Fragments的建议onTabSelected.

不幸的是我不能延伸MainActivity到我FragmentActivity,因为ActionBar在那种情况下我将无法使用(我需要扩展ActionBarActivity).

onTabSelected片段:

@Override
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
  int position = tab.getPosition();

  switch (position) {
    case 0:
        break;
    case 1:
        break;
    case 2:
        break;
  }
}

MainActivity的一部分在这里很重要:

public class MainActivity extends ActionBarActivity implements ActionBar.TabListener {

    private ViewPager viewPager;
    private TabsPagerAdapter mAdapter;
    private ActionBar actionBar;

    // Tab titles
    private String[] tabs = { "Novice", "?lanki", "O Tribuni" };

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

        // Initilization
        viewPager = (ViewPager) findViewById(R.id.pager);
        actionBar = getSupportActionBar();
        mAdapter = new TabsPagerAdapter(getSupportFragmentManager());

        viewPager.setAdapter(mAdapter);
        actionBar.setHomeButtonEnabled(false);
        actionBar.setNavigationMode(android.app.ActionBar.NAVIGATION_MODE_TABS);

        // Adding Tabs
        for (String tab_name : tabs) {
            actionBar.addTab(actionBar.newTab().setText(tab_name)
                    .setTabListener(this));

        }

        /**
         * on swiping the viewpager make respective tab selected
         * */
        viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {

            @Override
            public void onPageSelected(int position) {
                // on changing the page
                // make respected tab selected
                actionBar.setSelectedNavigationItem(position);
            }

            @Override
            public void onPageScrolled(int arg0, float arg1, int arg2) {
            }

            @Override
            public void onPageScrollStateChanged(int arg0) {
            }
        });


    }

任何帮助/建议表示赞赏.

Answer 1

好吧,我自己想通了.答案是通知viewPager关于TabSelected.

在您的onTabSelected 方法中使用以下代码行:

mViewPager.setCurrentItem(tab.getPosition());

希望它也可以帮助别人!