[Android] ViewPager 내부 내용 높이에 따른 스크롤 설정하기

ViewPager 내부 내용 높이에 따른 스크롤 설정하기

PagerApdater

    @Override
    public void setPrimaryItem(ViewGroup container, int position, Object object) {
        super.setPrimaryItem(container, position, object);

        if (position != mCurrentPosition && container instanceof DynamicHeightViewPager) {
            Fragment fragment = (Fragment) object;
            DynamicHeightViewPager pager = (DynamicHeightViewPager) container;

            if (fragment != null && fragment.getView() != null) {
                mCurrentPosition = position;
                pager.measureCurrentView(fragment.getView());
            }
        }
    }

DynamicHeightViewPager

public class DynamicHeightViewPager extends ViewPager {
    View mCurrentView;
    public DynamicHeightViewPager(@NonNull Context context) {
        super(context);
    }


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

//    @Override
//    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
//        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
//
//        int height = 0;
//        int childWidthSpec = MeasureSpec.makeMeasureSpec(
//                Math.max(0, MeasureSpec.getSize(widthMeasureSpec) -
//                        getPaddingLeft() - getPaddingRight()),
//                MeasureSpec.getMode(widthMeasureSpec)
//        );
//        for (int i = 0; i < getChildCount(); i++) {
//            View child = getChildAt(i);
//            child.measure(childWidthSpec, MeasureSpec.UNSPECIFIED);
//            int h = child.getMeasuredHeight();
//            if (h > height) height = h;
//        }
//
//        if (height != 0) {
//            heightMeasureSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);
//        }
//
//        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
//    }

    @Override
    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);

        if (mCurrentView != null) {
            mCurrentView.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));

            int height = Math.max(0, mCurrentView.getMeasuredHeight());
            heightMeasureSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);

            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        }
    }

    public void measureCurrentView(View currentView) {
        mCurrentView = currentView;
        requestLayout();
    }
}

Activity의 xml

        <ScrollView
            android:id="@+id/sv"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:fillViewport="true">

            <kr.co.koreastock.mts.android.custom.DynamicHeightViewPager
                android:id="@+id/view_pager"
                android:layout_width="match_parent"
                android:layout_height="match_parent" />
        </ScrollView>