TabHost标签使用ViewPager刷卡时不水平滚动 [英] TabHost tabs are not horizontally scrolling when swiping using ViewPager

问题描述

我写一个使用许多片段的应用程序。我已经使用ActionBarSherlock（与动作条）。要绕的bug＃ 240 ，我已经决定要在功能上工作实现切换到使用ActionBarSherlock是 TabHost 。
工作半年了几个小时后，工作正常，除非我的页面之间的刷卡：该记者选项卡中选择，但不集中，经常连不可见，所以用户不能看选择哪个选项卡。

I am writing an app that uses many fragments. I have used ActionBarSherlock (with ActionBar). To work-around bug #240, I've decided to switch a functionally working implementation to use ActionBarSherlock with TabHost. After half a few hours of work, it is working fine, except for when I am swiping between pages: The correspondent tab is selected, but is not centered and often not even visible so the user can't see which tab is selected.

在画面可以看到明显的片段（WEEKLY秒。），但该选项卡的只有一半可见。接下来的刷卡只会让WEEKLY小号......看起来像日历事件，我不知道哪个选项卡中选择，除非我手动刷卡TabWidget。

In the picture you can see the visible fragment ("WEEKLY S..") but the tab is only half visible. The next swipe will only make "WEEKLY S..." look like "CALENDAR EVENTS" and I won't know which Tab is selected unless I swipe the TabWidget manually.

下面是我的activity_main.xml中：

Here is my activity_main.xml:

<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/tabhost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <LinearLayout
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">

        <HorizontalScrollView 
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:fillViewport="true"
            android:scrollbars="none" >

            <TabWidget
                android:id="@android:id/tabs"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:tabStripEnabled="true"
                android:orientation="horizontal" />

        </HorizontalScrollView>

        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="0dp"
            android:layout_weight="0"/>

        <android.support.v4.view.ViewPager
            android:id="@+id/pager"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"/>

    </LinearLayout>

</TabHost>

和我TabsAdapter是一样的<一的杰克沃顿例子href=\"https://github.com/JakeWharton/ActionBarSherlock/blob/master/actionbarsherlock-samples/fragments/src/com/actionbarsherlock/sample/fragments/FragmentTabsPager.java\"相对=nofollow> FragmentTabsPager 。

And my TabsAdapter is the same as Jake Wharton's example of FragmentTabsPager.

任何建议，欢迎！

推荐答案

由于这个<一个href=\"http://stackoverflow.com/questions/9650486/tabwidget-wrapped-in-horizontalscrollview-doesnt-scroll-with-viewpager\">post,并 jucas特别，我设法得到它的工作。这里是code：

Thanks to this post, and to jucas in particular, I managed to get it to work. Here is the code:

@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
    View tabView = mTabHost.getTabWidget().getChildAt(position);
    if (tabView != null)
    {
        final int width = mHorizontalScroll.getWidth();
        final int scrollPos = tabView.getLeft() - (width - tabView.getWidth()) / 2;
        mHorizontalScroll.scrollTo(scrollPos, 0);
    } else {
        mHorizontalScroll.scrollBy(positionOffsetPixels, 0);
    }
}

当然，我不得不 mHorizo​​ntalScroll 在几个地方进行初始化。 （如果有人不知道如何做到这一点，我会很高兴张贴满code）

Of course I had to get mHorizontalScroll initialized in several places. (If someone isn't sure how to do it, I'll be happy to post the full code.)

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