我实现了带有ViewPager和TabsAdapter的ActionBarSherlock。它运作良好，但是现在我试图从另一个表中的“标签1”中加载的框架中“推送”。

该行为应类似于：

• 我的应用程序中有3个选项卡，启动时会看到第一个选项卡，其中有一个带有按钮的片段
• 按下第一个选项卡上的按钮，应替换第一个选项卡上的片段，并显示另一个片段

我试图实现这一点，但是在更换时有一个黑色的片段。

代码：

FragmentDemoActivity.java

public class FragmentDemoActivity extends SherlockFragmentActivity {
    CustomViewPager  mViewPager;
    TabsAdapter mTabsAdapter;

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

        ActionBar bar = getSupportActionBar();
        bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
        bar.setDisplayOptions(0, ActionBar.DISPLAY_SHOW_TITLE);

        mViewPager = (CustomViewPager)findViewById(R.id.pager);
        mViewPager.setSwipingEnabled(false);

        mTabsAdapter = new TabsAdapter(this, bar, mViewPager);
        mTabsAdapter.addTab(bar.newTab().setText("tab1"),
                FragmentA.class, null);
        mTabsAdapter.addTab(bar.newTab().setText("tab2"),
                FragmentB.class, null);

   setTitle(R.string.app_name);

        if (savedInstanceState != null) {
            bar.setSelectedNavigationItem(savedInstanceState.getInt("tab"));
        }
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putInt("tab", getSupportActionBar().getSelectedNavigationIndex());
    }

    public static class TabsAdapter extends FragmentPagerAdapter
            implements ViewPager.OnPageChangeListener, ActionBar.TabListener {
        private final Context mContext;
        private final ActionBar mBar;
        private final ViewPager mViewPager;
        private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>();

        static final class TabInfo {
            private final Class<?> clss;
            private final Bundle args;

            TabInfo(Class<?> _class, Bundle _args) {
                clss = _class;
                args = _args;
            }
        }

        public TabsAdapter(FragmentActivity activity, ActionBar bar, ViewPager pager) {
            super(activity.getSupportFragmentManager());
            mContext = activity;
            mBar = bar;
            mViewPager = pager;
            mViewPager.setAdapter(this);
            mViewPager.setOnPageChangeListener(this);
        }

        public void addTab(ActionBar.Tab tab, Class<? extends Fragment> clss, Bundle args) {
            TabInfo info = new TabInfo(clss, args);
            tab.setTag(info);
            tab.setTabListener(this);
            mTabs.add(info);
            mBar.addTab(tab);
            notifyDataSetChanged();
        }

        @Override
        public int getCount() {
            return mTabs.size();
        }

        @Override
        public Fragment getItem(int position) {
            TabInfo info = mTabs.get(position);
            return Fragment.instantiate(mContext, info.clss.getName(), info.args);
        }



        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
        }

        @Override
        public void onPageSelected(int position) {
            mBar.setSelectedNavigationItem(position);
        }

        @Override
        public void onPageScrollStateChanged(int state) {
        }

        @Override
        public void onTabSelected(Tab tab, FragmentTransaction ft) {
            Object tag = tab.getTag();
            for (int i=0; i<mTabs.size(); i++) {
                if (mTabs.get(i) == tag) {
                    mViewPager.setCurrentItem(i,false);
                }
            }
        }

        @Override
        public void onTabUnselected(Tab tab, FragmentTransaction ft) {

        }

        @Override
        public void onTabReselected(Tab tab, FragmentTransaction ft) {

        }
    }

}

FragmentA.java

public class FragmentA extends Fragment {
    Button button;
    int num;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup group, Bundle saved)
    {
        return inflater.inflate(R.layout.frag_a, group, false);
    }

    @Override
    public void onActivityCreated (Bundle savedInstanceState)
    {
        super.onActivityCreated(savedInstanceState);
        num = 0;
        button = (Button) getActivity().findViewById(R.id.button1);
        button.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {

                FragmentB f1 = new FragmentB();
                FragmentTransaction ft = getActivity().getSupportFragmentManager().beginTransaction();
                ft.replace(R.id.pager, f1,"newTag");
                ft.show(f1);
                ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
                ft.addToBackStack(null);
                ft.commit();

            }
        });
    }
}

我是Android开发的新手，所以如果有人能够帮助我，我会很高兴。我已经花了很多时间来寻找解决方案，但结果却没有我预期的那样。

我当前的项目：http :
//cl.ly/3q1f2t1O2Y3j