如何在 Android 上的选项卡之间实现滑动？
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How do I implement swiping between tabs on Android?
提问by Roman Nurik
One of the key design recommendations in Android 4.0 for tabs is to allow swipingbetween them where appropriate. This behavior enables users to swipe horizontally across the selected tab's contents to navigate to adjacent tabs, without needed to directly interact with the tabs themselves.
Android 4.0 中标签的关键设计建议之一是允许在适当的情况下在它们之间滑动。此行为使用户能够在所选选项卡的内容上水平滑动以导航到相邻的选项卡，而无需直接与选项卡本身进行交互。
How can this be implemented?
如何实施？
回答by Roman Nurik
NOTE: This is an excerpt from the Android Trainingclass Implementing Effective Navigation.
注意：这是Android 培训课程实施有效导航的摘录。
To implement this (in Android 3.0 or above), you can use a ViewPagerin conjunction with the ActionBartabs API.
要实现这一点（在 Android 3.0 或更高版本中），您可以将ViewPager与ActionBar选项卡 API结合使用。
Upon observing the current page changing, select the corresponding tab. You can set up this behavior using an ViewPager.OnPageChangeListenerin your activity's onCreate()method:
观察当前页面的变化，选择相应的选项卡。您可以在活动的方法中使用ViewPager.OnPageChangeListener设置此行为onCreate()：
@Override
public void onCreate(Bundle savedInstanceState) {
...
mViewPager.setOnPageChangeListener(
new ViewPager.SimpleOnPageChangeListener() {
@Override
public void onPageSelected(int position) {
// When swiping between pages, select the
// corresponding tab.
getActionBar().setSelectedNavigationItem(position);
}
});
...
}
And upon selecting a tab, switch to the corresponding page in the ViewPager. To do this, add an ActionBar.TabListenerto your tab when creating it using the newTab()method:
并在选择一个选项卡后，切换到ViewPager 中的相应页面。为此，请在使用以下方法创建选项卡时将ActionBar.TabListener添加到您的选项卡newTab()：
actionBar.newTab()
...
.setTabListener(new ActionBar.TabListener() {
public void onTabSelected(ActionBar.Tab tab,
FragmentTransaction ft) {
// When the tab is selected, switch to the
// corresponding page in the ViewPager.
mViewPager.setCurrentItem(tab.getPosition());
}
...
}));
回答by JesperB
If you are targeting APIs below Android 3.0, you cannot use Roman's solution above.
如果您的目标 API 低于 Android 3.0，则不能使用上述 Roman 的解决方案。
I wrote a blog post hereabout how to accomplish the same thing with ActionBarSherlock if anyone is interested.
