ViewPagerAdapter

public class PicDetailActivity extends BaseActivity {

    public static final String EXTRA_DOC = "doc";

    private Document doc;

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

        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_pic_detail);

        ImageViewPager viewPager = (ImageViewPager) findViewById(R.id.picDetail);

        doc = (Document) getIntent().getSerializableExtra(EXTRA_DOC);
        PicDetailAdapter adapter = new PicDetailAdapter(this);
        adapter.setItem(doc.getPicAttaches());
        viewPager.setAdapter(adapter);

        //页码显示
        final TextView pageIndicator = (TextView) findViewById(R.id.indicator_page);
        TextView totalIndicator = (TextView) findViewById(R.id.indicator_total);
        pageIndicator.setText("1");
        //页码总数
        totalIndicator.setText(String.valueOf(doc.getPicAttaches().size()));
        viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int i, float v, int i2) {

            }

            @Override
            public void onPageSelected(int i) {
                //滑动时改变当前页码
                pageIndicator.setText(String.valueOf(i + 1));
            }

            @Override
            public void onPageScrollStateChanged(int i) {

            }
        });
    }

    public void goBack(View view) {
        finish();
    }

    //设置Adapter
    private class PicDetailAdapter extends PagerAdapter {

        private Context context;
        private LayoutInflater inflater;
        private List<Document.PicAttach> items;
        private List<View> pages;

        public PicDetailAdapter(Context context) {
            this.inflater = getLayoutInflater();
            this.context = context;
        }


        public void setItem(List<Document.PicAttach> items) {
            this.items = items;
            //new一个容器，添加view（即为每个page添加图片）
            pages = new ArrayList<View>(items.size());
            for (Document.PicAttach picAttach : items) {
                String absurl = picAttach.getAbsurl();
                String imgdesc = picAttach.getImgdesc();
                View view = inflater.inflate(R.layout.pic_detail, null);
                //图片
                ImageView imageView = (ImageView) view.findViewById(R.id.pic_detail);
                //图片描述
                TextView textView = (TextView) view.findViewById(R.id.imgdesc);
                if (absurl != null) {
                    UrlImageViewHelper.setUrlDrawable(imageView, absurl);
                }
                if (imgdesc != null) {
                    textView.setText(URLDecoder.decode(imgdesc));
                    /*textView.setText("五月飞絮很重。\n" +
                            "一朵柳絮穿过一条街，要用一个上午的时间。\n" +
                            "它们跌跌撞撞，起起落落，微不足道却又自顾自地交缠、拥抱、崩裂，就像尘世里的那些故事，渺小而卑微地轰轰烈烈着，全由当事人的情智予以消化。\n" +
                            "然后穿街过巷，最终被遗忘在时间的角落。\n" +
                            "好像发生过什么，又好像，什么也没有发生过。\n" +
                            "五月飞絮很重。\n" +
                            "一朵柳絮穿过一条街，要用一个上午的时间。\n" +
                            "它们跌跌撞撞，起起落落，微不足道却又自顾自地交缠、拥抱、崩裂，就像尘世里的那些故事，渺小而卑微地轰轰烈烈着，全由当事人的情智予以消化。\n" +
                            "然后穿街过巷，最终被遗忘在时间的角落。\n" +
                            "好像发生过什么，又好像，什么也没有发生过。");*/
                }
                //给Arraylist添加每个页面（view）
                pages.add(view);
                view.setTag(items);
            }
        }

        @Override
        public Object instantiateItem(ViewGroup container, int position) {
            //初始化Item
            if (position < pages.size()) {
                View page = pages.get(position);
                container.addView(page);
                return page;
            }
            return null;
        }

        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            container.removeView(pages.get(position));
        }

        public List<Document.PicAttach> getItems() {
            if (items == null) {
                items = new ArrayList<Document.PicAttach>();
            }
            return items;
        }

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

        @Override
        public boolean isViewFromObject(View view, Object o) {
            return view == o;
        }
    }

}
    

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@android:color/black">

    <RelativeLayout
        android:id="@+id/indicator"
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:layout_marginTop="8dp"
        android:background="@android:color/black">

        <IconTextView
            android:id="@+id/backIcon"
            android:text="{fa-angle-left}"
            android:textSize="30dp"
            android:textColor="#fff"
            android:layout_width="40dp"
            android:layout_height="40dp"
            android:layout_centerInParent="true"
            android:layout_alignParentLeft="true"
            android:layout_centerVertical="true"
            android:clickable="true"
            android:onClick="goBack" />
        <LinearLayout
            android:layout_centerInParent="true"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:id="@+id/indicator_page"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="18sp"
                android:textColor="#fff"/>

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="/"
                android:textSize="18sp"
                android:textColor="#fff"/>

            <TextView
                android:id="@+id/indicator_total"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="18sp"
                android:textColor="#fff" />
        </LinearLayout>
    </RelativeLayout>

    <com.terton.putian.ImageViewPager
        android:id="@+id/picDetail"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@android:color/black" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:id="@+id/pic_detail"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="124dp"
        android:background="#88000000"
        android:layout_alignParentBottom="true">

        <TextView
            android:id="@+id/imgdesc"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_margin="8dp"
            android:textColor="#ffffff"
            android:textSize="16sp" />
    </ScrollView>

</RelativeLayout>