获取 ViewPager 的当前位置

Getting the current position of a ViewPager(获取 ViewPager 的当前位置)

问题描述

我知道通过 Gallery 小部件可以使用 getSelectedItemPosition();检索当前位置，但 ViewPager 似乎没有.

I know with the Gallery widget I was able to use getSelectedItemPosition(); to retrieve the current position, however it doesnt seem ViewPager has that.

我知道我可以设置一个监听器并在页面切换时检索位置.但我想要当前的视图位置.

I know I can setup a listener and retrieve the position when the page is switched. But I want the current view position.

推荐答案

创建一个监听器并在你的viewpager上设置它:

Create a listener and set it on your viewpager:

/**
 * Get the current view position from the ViewPager by
 * extending SimpleOnPageChangeListener class and adding your method
 */
public class DetailOnPageChangeListener extends ViewPager.SimpleOnPageChangeListener {

    private int currentPage;

    @Override
    public void onPageSelected(int position) {
        currentPage = position;
    }

    public final int getCurrentPage() {
        return currentPage;
    }
}

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