android - 查看寻呼机换行内容问题

Question

我正在尝试使用此 Android: I am unable to have ViewPager WRAP_CONTENT 将 View 寻呼机高度设置为wrap_content

但它在底部留下了额外的空白

如何删除这个空格？

这是我的 xml 代码:

<android.support.v7.widget.CardView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="8dp"
            android:layout_marginRight="8dp"
            android:layout_marginTop="8dp"
            card_view:cardCornerRadius="@dimen/card_corner_radius">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content">


            <com.test.android.custom_views.WrapContentHeightViewPager
                    android:id="@+id/similarRecipesPager"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_margin="8dp"
                    android:visibility="visible" />

            </LinearLayout>
</android.support.v7.widget.CardView>

Answer 1

尝试一下，按如下方式覆盖 ViewPager 的 onMeasure 将使其获得当前最大子项的高度。

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

    int height = 0;
    for(int i = 0; i < getChildCount(); i++) {
        View child = getChildAt(i);
        child.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
        int h = child.getMeasuredHeight();
        if(h > height) height = h;
    }

    heightMeasureSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);

    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}