我正在使用 Jake 的 ViewPageIndicator并希望像滑动图库一样显示图像。 我可以开始的任何引用链接。我已经实现了基本的 viewpager，现在想实现如下的 image viewpaper

是否可以使用ViewPageIndicator 来实现？ ?

最佳答案

在 Jake 的 ViewPageIndicator 中，他实现了 View pager 以显示一个字符串数组(即 ["this","is","a","text"]) 您从 YourAdapter.java(扩展 FragmentPagerAdapter)传递到 YourFragment.java，后者将 View 返回给 viewpager。

为了显示不同的内容，您只需更改传递的上下文类型。在这种情况下，您希望传递图像而不是文本，如下面的示例所示:

这是您设置 Viewpager 的方式:

public class PlaceDetailsFragment extends SherlockFragment {
    PlaceSlidesFragmentAdapter mAdapter;
    ViewPager mPager;
    PageIndicator mIndicator;

    public static final String TAG = "detailsFragment";

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

        mAdapter = new PlaceSlidesFragmentAdapter(getActivity()
                .getSupportFragmentManager());

        mPager = (ViewPager) view.findViewById(R.id.pager);
        mPager.setAdapter(mAdapter);

        mIndicator = (CirclePageIndicator) view.findViewById(R.id.indicator);
        mIndicator.setViewPager(mPager);
        ((CirclePageIndicator) mIndicator).setSnap(true);

        mIndicator
                .setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
                    @Override
                    public void onPageSelected(int position) {
                        Toast.makeText(PlaceDetailsFragment.this.getActivity(),
                                "Changed to page " + position,
                                Toast.LENGTH_SHORT).show();
                    }

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

                    @Override
                    public void onPageScrollStateChanged(int state) {
                    }
                });
        return view;
    }

}

your_layout.xml

<?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.support.v4.view.ViewPager
        android:id="@+id/pager"
        android:layout_width="fill_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />

    <com.viewpagerindicator.CirclePageIndicator
        android:id="@+id/indicator"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:padding="10dip" />

</LinearLayout>

YourAdapter.java

public class PlaceSlidesFragmentAdapter extends FragmentPagerAdapter implements
        IconPagerAdapter {

    private int[] Images = new int[] { R.drawable.photo1, R.drawable.photo2,
            R.drawable.photo3, R.drawable.photo4

    };

    protected static final int[] ICONS = new int[] { R.drawable.marker,
            R.drawable.marker, R.drawable.marker, R.drawable.marker };

    private int mCount = Images.length;

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

    @Override
    public Fragment getItem(int position) {
        return new PlaceSlideFragment(Images[position]);
    }

    @Override
    public int getCount() {
        return mCount;
    }

    @Override
    public int getIconResId(int index) {
        return ICONS[index % ICONS.length];
    }

    public void setCount(int count) {
        if (count > 0 && count <= 10) {
            mCount = count;
            notifyDataSetChanged();
        }
    }
}

YourFragment.java

//你需要从这里返回图片而不是文本。//

public final class PlaceSlideFragment extends Fragment {
    int imageResourceId;

    public PlaceSlideFragment(int i) {
        imageResourceId = i;
    }

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

    }

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

        ImageView image = new ImageView(getActivity());
        image.setImageResource(imageResourceId);

        LinearLayout layout = new LinearLayout(getActivity());
        layout.setLayoutParams(new LayoutParams());

        layout.setGravity(Gravity.CENTER);
        layout.addView(image);

        return layout;
    }
}

你应该从上面的代码中得到一个像这样的 View pager。

关于Android Viewpager 作为图片幻灯片库，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13796382/