ViewPager on Android 4.3 missing content

问题

I have a ListView each item of which is ViewPager with some content (mostly images). Everything works fine bot not on Android 4.3 and above ViewPager's content is missing and ViewPager not scrollable. I don't know which part of source code to provide here - ask me and I'll try to provide you maximum info.

EDIT: Found out that ViewPager in my case has zero dimensions. But only on Android 4.3+.

Here is part of my layout:

<...AdaptableHeightImageView
    android:id="@android:id/icon"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:adjustViewBounds="true"
    android:src="@drawable/slide"
    android:visibility="invisible"
    tools:ignore="ContentDescription" />

<...UninterceptableViewPager
    android:id="@+id/list_item_showcase_images"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignBottom="@android:id/icon"
    android:overScrollMode="never" />

When I set ViewPager's width and height 100dp for example it becomes visible. The UninterceptableViewPager is ViewPager subclass with locked X-axes. The AdaptableHeightImageView is ImageView subclass which fits the setted width but stretches it's height to save aspect ratio. The goal is to have ViewPager with the same dimensions that ImageView has.

If I write something like this:

    <...UninterceptableViewPager
    android:id="@+id/list_item_showcase_images"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignBottom="@android:id/icon"
    android:layout_alignLeft="@android:id/icon"
    android:layout_alignRight="@android:id/icon"
    android:layout_alignTop="@android:id/icon"
    android:overScrollMode="never" />

Then once my Views inside ViewPager or parent ListView are recycled they never appear again. Also in this case any ViewPager content which wasn't shown when data array is set will never be shown. But ViewPager will have dimensions and I even able to scroll it. Seems like Google changed something in Android 4.3.

In conclusion: everything works fine only if I set concrete width and height

来源：https://stackoverflow.com/questions/20093858/viewpager-on-android-4-3-missing-content