请问 ViewPager 必须是活动布局中的唯一对象present？ 我想实现这样的：

Does the ViewPager have to be the only object present inside the activity layout? I'm trying to implement something like this:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/reader_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<android.support.v4.view.ViewPager
    android:id="@+id/page_viewer"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

<Gallery
    android:id="@+id/miniatures_gallery"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" /></LinearLayout>

我应该在哪里有一个大的寻呼机滚动顶部（我有），并在一个较小的画廊滚动。 这说明我的只有寻呼机，而不是画廊。 任何建议？

Where should I have a big pager scrolling in the top (and I have it) and a smaller gallery scrolling under that. This shows me only the pager and not the gallery. Any suggestion?

推荐答案

在ViewPager不支持 WRAP_CONTENT ，因为它（通常）从来没有所有的孩子一样装时间，因此无法获得合适的尺寸（该选项将有一个每次都转第一次改变大小寻呼机）。

The ViewPager does not support wrap_content as it (usually) never have all its children loaded at the same time, and can therefore not get an appropriate size (the option would be to have a pager that changes size every time you have switched page).

不过，您可以设置precise尺寸（比如150dp）和 match_parent 工作为好。 您还可以动态改变高度 -attribute在其的LayoutParams 修改尺寸从code

You can however set a precise dimension (e.g. 150dp) and match_parent works as well. You can also modify the dimensions dynamically from your code by changing the height-attribute in its LayoutParams.