图片滑动

Posted 2020-11-26 sunjian43792901

//图片
public class PhotoViewPager extends ViewPager {
    public PhotoViewPager(@NonNull Context context) {
        this(context, null);
    }

    public PhotoViewPager(@NonNull Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        try {
            return super.onTouchEvent(ev);
        } catch (IllegalArgumentException ex) {
            ex.printStackTrace();
        }
        return false;
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        try {
            return super.onInterceptTouchEvent(ev);
        } catch (IllegalArgumentException ex) {
            ex.printStackTrace();
        }
        return false;
    }
}
////////////////////////////////////////////////////

private ArrayList<View> viewList;

/**
 * 初始化轮播
 */
public void initBanner(List<PhotoListResponse> responses) {
    viewList = new ArrayList<View>();
    for (int i = 0; responses != null && i < responses.size(); i++) {
        LayoutInflater inflater = getLayoutInflater();
        View view = inflater.inflate(R.layout.air_companyculture_activity_photo_view, null);
        PhotoView photoView = view.findViewById(R.id.air_photo_view_photo);
        String fileId = responses.get(i).getImagesInfo().get(0).getFileId();
        GlideUtil.load(this, fileId, photoView);
        viewList.add(view);
    }
    mAdapter = new PhotoPagerAdapter(viewList);
    photoPager.setAdapter(mAdapter);
    photoPager.setCurrentItem(s);
    photoPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

        }

        @Override
        public void onPageSelected(int position) {
            dolike(position);
        }

        @Override
        public void onPageScrollStateChanged(int state) {

        }
    });
}
/////////////////////////////////////////
//上面引用布局

<?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">

    <uk.co.senab.photoview.PhotoView
        android:id="@+id/air_photo_view_photo"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/c101" />
</LinearLayout>
////////////////////////////////
//适配器

public class PhotoPagerAdapter extends PagerAdapter {
    private ArrayList<View> viewList;

    public PhotoPagerAdapter(ArrayList<View> viewList) {
        this.viewList = viewList;
    }

    @Override
    public boolean isViewFromObject(View arg0, Object arg1) {
        return arg0 == arg1;
    }

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

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

    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        container.addView(viewList.get(position));
        return viewList.get(position);
    }
}