ViewPagerAdapter里的getItemCount计算不正确

[wbkearly]

override fun getItemCount(): Int {
    if (itemAdapter.getItemCount() == 0) return 0

    return (mItemCount / mSpanCount / mLineCount) + 1
}

比如 mItemCount=6, mSpanCount = 2, mLineCount = 3, 此时应该返回1 实际返回2

可以修改为

override fun getItemCount(): Int {
    return (mItemCount + mSpanCount * mLineCount - 1) / (mSpanCount * mLineCount);
}

[wbkearly]

补充

getPageItemCount也需要同时修改

private fun getPageItemCount(pageIndex: Int): Int {
    return if (pageIndex == this.itemCount - 1) {
        if (pageIndex == 0) {
            mItemCount
        } else {
            mItemCount % mPageGridCount
        }
    } else {
        mPageGridCount
    }
}

改为

private fun getPageItemCount(pageIndex: Int): Int {
    return if (pageIndex == this.itemCount - 1) {
         (mItemCount - 1) % mPageGridCount + 1
    } else {
        mPageGridCount
    }
}