View Pager + ImageView +Pinch Zoom + Rotation

EDIT 2: Example code has been pushed to the master branch of TouchImageView. Here is a link to the example activity and a link to the ExtendedViewPager.


EDIT: added code adapting the example link to TouchImageView. Note: you will need the latest code, which is currently in the dev branch. In the future, this will be included in v1.2.0. You know you have the latest code if TouchImageView overrides canScrollHorizontally.

Step 1: Extend ViewPager and override canScroll to call canScrollHorizontallyFroyo.

public class ExtendedViewPager extends ViewPager {

public ExtendedViewPager(Context context) {
    super(context);
}

public ExtendedViewPager(Context context, AttributeSet attrs) {
    super(context, attrs);
}

@Override
protected boolean canScroll(View v, boolean checkV, int dx, int x, int y) {
    if (v instanceof TouchImageView) {
        return ((TouchImageView) v).canScrollHorizontallyFroyo(-dx);
    } else {
        return super.canScroll(v, checkV, dx, x, y);
    }
}

}

Step 2: Modify TouchImageView by adding canScrollHorizontallyFroyo:

public boolean canScrollHorizontallyFroyo(int direction) {
    return canScrollHorizontally(direction);
}

Step 3: Your activity

public class TouchImageViewActivity extends Activity {

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        ExtendedViewPager mViewPager = (ExtendedViewPager) findViewById(R.id.view_pager);
        setContentView(mViewPager);
        mViewPager.setAdapter(new TouchImageAdapter());
    }

    static class TouchImageAdapter extends PagerAdapter {

            private static int[] images = { R.drawable.img1, R.drawable.img2, R.drawable.img3 };

            @Override
            public int getCount() {
                    return images.length;
            }

            @Override
            public View instantiateItem(ViewGroup container, int position) {
                    TouchImageView img = new TouchImageView(container.getContext());
                    img.setImageResource(images[position]);
                    container.addView(img, LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
                    return img;
            }

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

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

    }
}

Step 4: main.xml

<com.example.touch.ExtendedViewPager 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/view_pager"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

TouchImageView is actually my project. I currently have a fix in the dev branch for integration with ViewPagers, which will be pushed to master in an upcoming release. Unfortunately, this fix is only applicable for API 14 and greater since honeycomb and earlier do not call canScrollHorizontally. If you need to support older APIs, then you will need to implement a workaround in your ViewPager. Here is an example.


I found pretty solution with ImageViewZoom library. In order to scroll zoomed image in ViewPager I created own ViewPager:

public class ExtendedViewPager extends ViewPager {

    public ExtendedViewPager(Context context) {
        super(context);
    }

    public ExtendedViewPager(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected boolean canScroll(View v, boolean checkV, int dx, int x, int y) {
        if (v instanceof ImageViewTouch) {
            return ((ImageViewTouch) v).canScroll(dx);
        } else {
            return super.canScroll(v, checkV, dx, x, y);
        }
    }
}

See more https://gist.github.com/atermenji/3781644