(ActionBar)Tabs + Pager + detail ViewPager容器中的碎片

Question

对于ActionBarSherlock,我想要(Action Bar)Tabs + Pager.我在该寻呼机容器中使用Fragments.我已经得到的例子http://actionbarsherlock.com/工作,但我不能设法得到一个细节片段寻呼机容器中时我会点击我们说第一片段中的一个ListItem.

有这样的事情是不可能的:

使用选项卡和寻呼机容器的活动

• 片段Tab1下的内部寻呼机容器
  • 单击片段A中的内容并在Tab1下的同一个寻呼机容器中显示片段B.

然后片段A不可见,只有片段B可见,但也可见所有标签.

目前我认为只有一个新的活动(在其中包含片段B)可以在片段A中单击某些内容后启动.

Answer 1

这是我的解决方案(Tabs + Fragment + ViewPager)它对我来说是我想要的,希望对你也有用

这是xml文件

 <LinearLayout
        android:id="@+id/linearLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal" >

        <android.support.v4.view.ViewPager
            android:id="@+id/pager"
            android:layout_width="0dip"
            android:layout_height="match_parent"
            android:layout_weight="5" />

        <FrameLayout
            android:id="@+id/fragment_details"
            android:layout_width="0px"
            android:layout_height="match_parent"
            android:layout_weight="4.3" />
    </LinearLayout>

public class MainActivity extends FragmentActivity implements
        DialogInterface.OnDismissListener, TabDataResponder {

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        getSupportActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

        artistTab = getSupportActionBar().newTab().setText(
                R.string.tab_name_artist);
        albumTab = getSupportActionBar().newTab().setText(
                R.string.tab_name_album);
        songTab = getSupportActionBar().newTab().setText(
                R.string.tab_name_songs);

        map = new HashMap<String, Integer>();
        mViewPager = (ViewPager) findViewById(R.id.pager);
        FrameLayout deatil = (FrameLayout) findViewById(R.id.fragment_details);
        mDualPane = (deatil != null) && (deatil.getVisibility() == View.VISIBLE);
        mTabsAdapter = new TabsAdapter(this, getSupportActionBar(), mViewPager);

        if (savedInstanceState != null) {
            flag = true;
            index = savedInstanceState.getInt("index");
        }

        setUpTabView();

    }


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

    private void setUpTabView() {
        mTabsAdapter.addTab(artistTab, ArtistFragment.class, null);
        mTabsAdapter.addTab(albumTab, AlbumFragment.class, null);
        mTabsAdapter.addTab(songTab, SongFragment.class, null);
        getSupportActionBar().setSelectedNavigationItem(index);
    }

    public static class TabsAdapter extends FragmentPagerAdapter implements
            ViewPager.OnPageChangeListener, ActionBar.TabListener {

        private FragmentActivity mContext;
        private ActionBar mActionBar;
        private final ViewPager mViewPager;

        private final ArrayList<String> mTabs = new ArrayList<String>();
        private TabDataResponder responder;

        public TabsAdapter(FragmentActivity activity, ActionBar actionBar,
                ViewPager pager) {

            super(activity.getSupportFragmentManager());
            mContext = activity;
            mActionBar = actionBar;
            mViewPager = pager;

            // TabDataResponder is an interface which is implemented in MainActivity
            // You can find implementation @ the last

            responder = (TabDataResponder) activity;
            mViewPager.setAdapter(this);
            mViewPager.setOnPageChangeListener(this);

            //I have used map to save state of the fragment
            map.put(SongFragment.TYPE_FRAGMENT.trim(), 0);
            map.put(AlbumFragment.TYPE_FRAGMENT.trim(), 0);
            map.put(ArtistFragment.TYPE_FRAGMENT.trim(), 0);
        }

        public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) {
            mTabs.add(clss.getName());
            // mArgs.add(args);
            mActionBar.addTab(tab.setTabListener(this));
            notifyDataSetChanged();
        }

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

        @Override
        public Fragment getItem(int position) {
            return Fragment
                    .instantiate(mContext, mTabs.get(position), /*
                                                                 * mArgs.get(
                                                                 * position)
                                                                 */null);
        }

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

        @Override
        public void onPageSelected(int position) {
            Log.i(TAG, "PageSelected....");
            mActionBar.setSelectedNavigationItem(position);
        }

        @Override
        public void onPageScrollStateChanged(int state) {
            Log.i(TAG, "ScrollSateChanged....");
        }

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

        @Override
        public void onTabSelected(Tab tab, FragmentTransaction ft) {
            mViewPager.setCurrentItem(tab.getPosition());
            String a = null;
            if (mDualPane) {
                a = mTabs.get(tab.getPosition());
                responder.loadData(a, map.get(a));
            }
        }

        @Override
        public void onTabUnselected(Tab tab, FragmentTransaction ft) {
            Log.i(TAG, "Tab is released now....");
        }
    }

    @Override
    public void onDismiss(DialogInterface dialog) {
        setUpTabView();

    }
//This interface must be call from fragment class 
//@ the time of event you want to show detail 
// pass the class name in the type argument using class.getName() method
    @Override
    public void loadData(String type, int index) {
        DetailFragment viewer = (DetailFragment) getSupportFragmentManager()
                .findFragmentById(R.id.fragment_details);
        if (mDualPane) {
            if (viewer == null || viewer.getShownIndex() != index
                    || viewer.getTypeFragment() != type) {

                DetailFragment df = DetailFragment.newInstance(index, type);
                getSupportFragmentManager()
                        .beginTransaction()
                        .replace(R.id.fragment_details, df)
                        .setTransition(
                                FragmentTransaction.TRANSIT_FRAGMENT_FADE)
                        .commit();
                map.put(type.trim(), index);

            }

        } else {
            Intent intent = new Intent();
            intent.setClass(MainActivity.this, DetailActivity.class);
            intent.putExtra("index", index);
            intent.putExtra("type", type);
            startActivity(intent);
        }
    }
}

public class DetailFragment extends Fragment{

    public static DetailFragment newInstance(int index, String  TYPE_FRAGMENT) {
        DetailFragment f = new DetailFragment();

        // Supply index input as an argument.
        Bundle args = new Bundle();
        args.putInt("index", index);
        args.putString("type", TYPE_FRAGMENT);
        f.setArguments(args);

        return f;
    }



    public int getShownIndex() {
        return getArguments().getInt("index", 0);
    }

    public String getTypeFragment(){
        String a = getArguments().getString("type");
        return a;
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        //template is blank layout
        View view =  inflater.inflate(R.layout.template, container, false);
        if(getTypeFragment().equals(ArtistFragment.TYPE_FRAGMENT)){
            view = null;
            view = inflater.inflate(R.layout.artist_details, container, false);
            //....

        }
        else if(getTypeFragment().equals(AlbumFragment.TYPE_FRAGMENT)){

            //do's for album fragment
        }
        else if(getTypeFragment().equals(SongFragment.TYPE_FRAGMENT)){
            //do's for song fragment
        }
        return view;
    }

}

 <LinearLayout
        android:id="@+id/linearLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal" >

        <android.support.v4.view.ViewPager
            android:id="@+id/pager"
            android:layout_width="0dip"
            android:layout_height="match_parent"
            android:layout_weight="5" />

        <FrameLayout
            android:id="@+id/fragment_details"
            android:layout_width="0px"
            android:layout_height="match_parent"
            android:layout_weight="4.3" />
    </LinearLayout>

public class MainActivity extends FragmentActivity implements
        DialogInterface.OnDismissListener, TabDataResponder {

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        getSupportActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

        artistTab = getSupportActionBar().newTab().setText(
                R.string.tab_name_artist);
        albumTab = getSupportActionBar().newTab().setText(
                R.string.tab_name_album);
        songTab = getSupportActionBar().newTab().setText(
                R.string.tab_name_songs);

        map = new HashMap<String, Integer>();
        mViewPager = (ViewPager) findViewById(R.id.pager);
        FrameLayout deatil = (FrameLayout) findViewById(R.id.fragment_details);
        mDualPane = (deatil != null) && (deatil.getVisibility() == View.VISIBLE);
        mTabsAdapter = new TabsAdapter(this, getSupportActionBar(), mViewPager);

        if (savedInstanceState != null) {
            flag = true;
            index = savedInstanceState.getInt("index");
        }

        setUpTabView();

    }


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

    private void setUpTabView() {
        mTabsAdapter.addTab(artistTab, ArtistFragment.class, null);
        mTabsAdapter.addTab(albumTab, AlbumFragment.class, null);
        mTabsAdapter.addTab(songTab, SongFragment.class, null);
        getSupportActionBar().setSelectedNavigationItem(index);
    }

    public static class TabsAdapter extends FragmentPagerAdapter implements
            ViewPager.OnPageChangeListener, ActionBar.TabListener {

        private FragmentActivity mContext;
        private ActionBar mActionBar;
        private final ViewPager mViewPager;

        private final ArrayList<String> mTabs = new ArrayList<String>();
        private TabDataResponder responder;

        public TabsAdapter(FragmentActivity activity, ActionBar actionBar,
                ViewPager pager) {

            super(activity.getSupportFragmentManager());
            mContext = activity;
            mActionBar = actionBar;
            mViewPager = pager;

            // TabDataResponder is an interface which is implemented in MainActivity
            // You can find implementation @ the last

            responder = (TabDataResponder) activity;
            mViewPager.setAdapter(this);
            mViewPager.setOnPageChangeListener(this);

            //I have used map to save state of the fragment
            map.put(SongFragment.TYPE_FRAGMENT.trim(), 0);
            map.put(AlbumFragment.TYPE_FRAGMENT.trim(), 0);
            map.put(ArtistFragment.TYPE_FRAGMENT.trim(), 0);
        }

        public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) {
            mTabs.add(clss.getName());
            // mArgs.add(args);
            mActionBar.addTab(tab.setTabListener(this));
            notifyDataSetChanged();
        }

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

        @Override
        public Fragment getItem(int position) {
            return Fragment
                    .instantiate(mContext, mTabs.get(position), /*
                                                                 * mArgs.get(
                                                                 * position)
                                                                 */null);
        }

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

        @Override
        public void onPageSelected(int position) {
            Log.i(TAG, "PageSelected....");
            mActionBar.setSelectedNavigationItem(position);
        }

        @Override
        public void onPageScrollStateChanged(int state) {
            Log.i(TAG, "ScrollSateChanged....");
        }

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

        @Override
        public void onTabSelected(Tab tab, FragmentTransaction ft) {
            mViewPager.setCurrentItem(tab.getPosition());
            String a = null;
            if (mDualPane) {
                a = mTabs.get(tab.getPosition());
                responder.loadData(a, map.get(a));
            }
        }

        @Override
        public void onTabUnselected(Tab tab, FragmentTransaction ft) {
            Log.i(TAG, "Tab is released now....");
        }
    }

    @Override
    public void onDismiss(DialogInterface dialog) {
        setUpTabView();

    }
//This interface must be call from fragment class 
//@ the time of event you want to show detail 
// pass the class name in the type argument using class.getName() method
    @Override
    public void loadData(String type, int index) {
        DetailFragment viewer = (DetailFragment) getSupportFragmentManager()
                .findFragmentById(R.id.fragment_details);
        if (mDualPane) {
            if (viewer == null || viewer.getShownIndex() != index
                    || viewer.getTypeFragment() != type) {

                DetailFragment df = DetailFragment.newInstance(index, type);
                getSupportFragmentManager()
                        .beginTransaction()
                        .replace(R.id.fragment_details, df)
                        .setTransition(
                                FragmentTransaction.TRANSIT_FRAGMENT_FADE)
                        .commit();
                map.put(type.trim(), index);

            }

        } else {
            Intent intent = new Intent();
            intent.setClass(MainActivity.this, DetailActivity.class);
            intent.putExtra("index", index);
            intent.putExtra("type", type);
            startActivity(intent);
        }
    }
}

不要将tab的状态保存在它们各自的片段中它会发生冲突,我们已经在这里做了

Answer 2

我仍然没有找到一种可能性，可以有一个分页器容器，其中应该加载片段并保留（ActionBar）选项卡。然而，我找到了一个非常肮脏的解决方案来完成此任务，开始 intens（带有选项卡的主要活动）并在后退按钮不再需要它时完成前面的活动。

我改编了 ABS 的代码：支持演示- 选项卡和寻呼机。但它又真的很脏：

Tab2下的LoaderCursorSupport.CursorLoaderListFragment

@Override public void onListItemClick(ListView l, View v, int position, long id) {
        Intent intent = new Intent();
        intent.setClass(getActivity(), ActionBarTabsPager.class);
        intent.putExtra("index", position);
        intent.putExtra("fragment", "details");
        intent.putExtra("tab", 1);
        ActionBarTabsPager.mPreviousActivity = getActivity();

        startActivity(intent);

ActionBarTabsPager（带有选项卡的主要活动）

public class ActionBarTabsPager extends FragmentActivity {
ViewPager mViewPager;
TabsAdapter mTabsAdapter;
static Activity mPreviousActivity;
static Activity mActivity;
static int mTabPosition = -1;
static Boolean mTabRefreshed = false;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.actionbar_tabs_pager);
    getSupportActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

    ActionBar.Tab tab1 = getSupportActionBar().newTab().setText("Tab 1");
    ActionBar.Tab tab2 = getSupportActionBar().newTab().setText("Tab 2");
    ActionBar.Tab tab3 = getSupportActionBar().newTab().setText("Tab 3");
    ActionBar.Tab tab4 = getSupportActionBar().newTab().setText("Tab 4");
    String fragment = "";
    try {
        Bundle bundle = this.getIntent().getExtras();
        fragment = bundle.getString("fragment");
        mTabPosition = bundle.getInt("tab");
    } catch (Exception ex) {
    }

    mViewPager = (ViewPager) findViewById(R.id.pager);
    mTabsAdapter = new TabsAdapter(this, getSupportActionBar(), mViewPager);
    mTabsAdapter.addTab(tab1, FragmentStackSupport.CountingFragment.class);
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.ECLAIR) {
        mTabsAdapter.addTab(tab2, FragmentStackSupport.CountingFragment.class);
        mTabsAdapter.addTab(tab3, FragmentStackSupport.CountingFragment.class);
        mTabsAdapter.addTab(tab4, FragmentStackSupport.CountingFragment.class);
    } else {
        if (!fragment.contains("details")) {
            mTabsAdapter.addTab(tab2, LoaderCursorSupport.CursorLoaderListFragment.class);
        } else {
            mTabsAdapter.addTab(tab2, ExampleFragment.class);
        }
        mTabsAdapter.addTab(tab3, LoaderCustomSupport.AppListFragment.class);
        mTabsAdapter.addTab(tab4, LoaderThrottleSupport.ThrottledLoaderListFragment.class);
    }

    if (savedInstanceState != null) {
        getSupportActionBar().setSelectedNavigationItem(savedInstanceState.getInt("index"));
    }

    if (mTabPosition > -1) {
        mTabsAdapter.setPrimaryItem(mTabPosition);

        mActivity = this;

    }
}

在这个类中有一个 TabsAdapter

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


    @Override
    public void onTabSelected(Tab tab, FragmentTransaction ft) {
        if (mTabPosition > -1 && mTabRefreshed) {
            int tabPosition = tab.getPosition();
            if (mTabPosition != tabPosition) {
                if (mPreviousActivity != null) {
                    mPreviousActivity.finish();
                    mTabRefreshed = false;
                    mPreviousActivity = null;
                    mTabPosition = -1;
                    Intent intent = new Intent();
                    intent.setClass(mContext, ActionBarTabsPager.class);
                    intent.putExtra("fragment", "home");
                    intent.putExtra("tab", tabPosition);
                    mActivity.startActivity(intent);
                    mActivity.finish();

                }
            }
        }
        mViewPager.setCurrentItem(tab.getPosition());
    }

这可以做得更简单吗？或者我应该放弃将选项卡与片段历史记录一起使用？这是在Android 3.0之前通过ActivityGroups和Activities完成的，但似乎这不能用fragment来完成。