为什么AD不能位于Android Tabbed活动的屏幕顶部？

我创建了一个标签式活动,我使用 android：layout_alignParentTop =“true”设置了位于屏幕顶部的名为android：id =“@ id / adView”的AD.

运行应用程序后,我发现四个选项卡位于屏幕顶部.如何让AD位于Tab的上方？谢谢！

当前

我希望

activity_main.xml中

<RelativeLayout  xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <com.google.android.gms.ads.AdView
        xmlns:ads="http://schemas.android.com/apk/res-auto"
        android:id="@+id/adView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        ads:adSize="SMART_BANNER"
        android:layout_alignParentTop="true"
        ads:adUnitId="@string/ad_unit_id" />


    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"
        android:layout_below="@+id/adView"
        android:layout_above="@+id/linearLayout1"
        android:paddingTop="12dip"
        android:paddingLeft="7dip"
        android:paddingRight="7dip"
        android:orientation="vertical" >


        <android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:tools="http://schemas.android.com/tools" android:id="@+id/pager"
            android:layout_width="wrap_content" android:layout_height="wrap_content"
            tools:context=".MainActivity" />


    </LinearLayout>

    <LinearLayout
        android:id="@+id/linearLayout1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:gravity="center"
        android:orientation="horizontal"
        android:layout_alignParentBottom="true"
        android:weightSum="4" >

        <Button
            android:id="@+id/btnClose"
            android:layout_width="0dip"
            android:layout_height="fill_parent"
            android:layout_gravity="center"
            android:layout_weight="1"
            android:text="Close" />
    </LinearLayout>

</RelativeLayout>

fragment_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    tools:context=".MainActivity$PlaceholderFragment">

    <TextView android:id="@+id/section_label1" android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="New Button"
        android:id="@+id/button"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true" />

</RelativeLayout>

MainActivity.java

public class MainActivity extends ActionBaractivity implements ActionBar.TabListener {

    SectionsPagerAdapter mSectionsPagerAdapter;
    ViewPager mViewPager;

    private AdView adView;

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

        adView=(AdView) findViewById(R.id.adView);
        SetAD(adView);


        // Set up the action bar.
        final ActionBar actionBar = getSupportActionBar();
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

        // Create the adapter that will return a fragment for each of the three
        // primary sections of the activity.
        mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());

        // Set up the ViewPager with the sections adapter.
        mViewPager = (ViewPager) findViewById(R.id.pager);
        mViewPager.setAdapter(mSectionsPagerAdapter);

        // When swiping between different sections,select the corresponding
        // tab. We can also use ActionBar.Tab#select() to do this if we have
        // a reference to the Tab.
        mViewPager.setonPagechangelistener(new ViewPager.SimpleOnPagechangelistener() {
            @Override
            public void onPageSelected(int position) {
                actionBar.setSelectednavigationItem(position);
            }
        });

        // For each of the sections in the app,add a tab to the action bar.
        for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) {
            // Create a tab with text corresponding to the page title defined by
            // the adapter. Also specify this Activity object,which implements
            // the TabListener interface,as the callback (listener) for when
            // this tab is selected.
            actionBar.addTab(
                    actionBar.newTab()
                            .setText(mSectionsPagerAdapter.getPageTitle(i))
                            .setTabListener(this));
        }
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main,menu);
        return true;
    }

    public  void SetAD(AdView adView) {
        if (true) {
            AdRequest adRequest = new AdRequest.Builder()
                    .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
                    .build();
            adView.loadAd(adRequest);
        }else{
            adView.setVisibility(View.GONE);
        }
    }


    @Override
    public boolean onoptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button,so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onoptionsItemSelected(item);
    }

    @Override
    public void onTabSelected(ActionBar.Tab tab,FragmentTransaction fragmentTransaction) {
        // When the given tab is selected,switch to the corresponding page in
        // the ViewPager.
        mViewPager.setCurrentItem(tab.getPosition());
    }

    @Override
    public void onTabUnselected(ActionBar.Tab tab,FragmentTransaction fragmentTransaction) {
    }

    @Override
    public void onTabReselected(ActionBar.Tab tab,FragmentTransaction fragmentTransaction) {
    }


    public class SectionsPagerAdapter extends FragmentPagerAdapter {

        public SectionsPagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int position) {
            // getItem is called to instantiate the fragment for the given page.
            // Return a PlaceholderFragment (defined as a static inner class below).
            //return PlaceholderFragment.newInstance(position + 1);

            Fragment fragment;
            switch(position){
                case 0:
                    fragment = new PlaceholderFragment();
                    break;
                case 1:
                    fragment = new PlaceholderFragment1();
                    break;
                case 2:
                    fragment = new PlaceholderFragment1();
                    break;
                case 3:
                    fragment = new PlaceholderFragment();
                    break;
                default:
                    throw new IllegalArgumentException("Invalid section number");
            }

            //set args if necessary
            Bundle args = new Bundle();
            args.putInt(PlaceholderFragment.ARG_SECTION_NUMBER,position + 1);
            fragment.setArguments(args);

            return fragment;

        }

        @Override
        public int getCount() {
            // Show 3 total pages.
            return 4;
        }

        @Override
        public CharSequence getPageTitle(int position) {
            Locale l = Locale.getDefault();
            switch (position) {
                case 0:
                    return getString(R.string.title_section1).toupperCase(l);
                case 1:
                    return getString(R.string.title_section2).toupperCase(l);
                case 2:
                    return getString(R.string.title_section3).toupperCase(l);
                case 3:
                    return getString(R.string.title_section4).toupperCase(l);
            }
            return null;
        }
    }

    /**
     * A placeholder fragment containing a simple view.
     */
    public static class PlaceholderFragment extends Fragment {
        /**
         * The fragment argument representing the section number for this
         * fragment.
         */
        private static final String ARG_SECTION_NUMBER = "section_number1";

        /**
         * Returns a new instance of this fragment for the given section
         * number.
         */
        public static PlaceholderFragment newInstance(int sectionNumber) {
            PlaceholderFragment fragment = new PlaceholderFragment();
            Bundle args = new Bundle();
            args.putInt(ARG_SECTION_NUMBER,sectionNumber);
            fragment.setArguments(args);
            return fragment;
        }

        public PlaceholderFragment() {
        }

        @Override
        public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.fragment_main,container,false);


            return rootView;
        }
    }



    /**
     * A placeholder fragment containing a simple view.
     */
    public static class PlaceholderFragment1 extends Fragment {
        /**
         * The fragment argument representing the section number for this
         * fragment.
         */
        private static final String ARG_SECTION_NUMBER = "section_number";

        /**
         * Returns a new instance of this fragment for the given section
         * number.
         */
        public static PlaceholderFragment1 newInstance(int sectionNumber) {
            PlaceholderFragment1 fragment = new PlaceholderFragment1();
            Bundle args = new Bundle();
            args.putInt(ARG_SECTION_NUMBER,sectionNumber);
            fragment.setArguments(args);
            return fragment;
        }

        public PlaceholderFragment1() {
        }

        @Override
        public View onCreateView(LayoutInflater inflater,Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.fragment_main1,false);

            Button cw= (Button)rootView.findViewById(R.id.buttonAA);

            final LayoutInflater my=inflater;
            cw.setonClickListener(new View.OnClickListener(){
                @Override
                public void onClick(View v) {
                     Toast.makeText(my.getContext(),"CW",Toast.LENGTH_SHORT).show();
                }
            });

            return rootView;
        }
    }

}