<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent" ><ImageViewandroid:id="@+id/iv_main_pic"android:layout_width="match_parent"android:layout_height="match_parent"android:contentDescription="@string/main_image"android:scaleType="fitXY" /></RelativeLayout>

import android.support.v4.app.Fragment;
......public class PictureSlideFragment extends Fragment {@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {View v = inflater.inflate(R.layout.fragment_picture_slide, container, false);return v;}}

        <android.support.v4.view.ViewPagerandroid:id="@+id/pager"android:layout_width="match_parent"android:layout_height="match_parent" />

private ViewPager mPager;

@Override
protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mPager = (ViewPager) findViewById(R.id.pager);mPagerAdapter = new PictureSlidePagerAdapter(getSupportFragmentManager());mPager.setAdapter(mPagerAdapter);
}    

    private class PictureSlidePagerAdapter extends FragmentStatePagerAdapter {public PictureSlidePagerAdapter(FragmentManager fm) {super(fm);// TODO Auto-generated constructor stub
        }@Overridepublic Fragment getItem(int arg0) {// TODO Auto-generated method stubreturn new PictureSlideFragment();}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn NUM_PIC;}}

    private int mIndex;public static PictureSlideFragment newInstance(int index) {PictureSlideFragment f = new PictureSlideFragment();Bundle args = new Bundle();args.putInt("index", index);f.setArguments(args);return f;}@Overridepublic void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);mIndex = getArguments() != null ? getArguments().getInt("index") : 1;}

        @Overridepublic Fragment getItem(int arg0) {// TODO Auto-generated method stubreturn PictureSlideFragment.newInstance(arg0);}

        mPager.setOnPageChangeListener(new OnPageChangeListener() {@Overridepublic void onPageSelected(int arg0) {// TODO Auto-generated method stub
                }@Overridepublic void onPageScrolled(int arg0, float arg1, int arg2) {// TODO Auto-generated method stub
                }@Overridepublic void onPageScrollStateChanged(int state) {// 当到第一张时切换到倒数第二张，当到最后一张时切换到第二张if (state == ViewPager.SCROLL_STATE_IDLE) {int curr = mPager.getCurrentItem();int lastReal = mPager.getAdapter().getCount() - 2;if (curr == 0) {mPager.setCurrentItem(lastReal, false);} else if (curr > lastReal) {mPager.setCurrentItem(1, false);}}}});

        mMainImage.setOnTouchListener(new OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {if (event.getAction() == MotionEvent.ACTION_DOWN) {((MainActivity)getActivity()).getTimer().cancel();} else if (event.getAction() == MotionEvent.ACTION_CANCEL) {((MainActivity)getActivity()).startSwitchImage();}return false;}});