嵌套在ViewPager中的ViewPager [英] ViewPager nested in ViewPager

问题描述

我真的是android的新手，希望对我的课程工作有所帮助。

I'm really newbie in android and I would appreciate any help for my course work.

我需要做的事情：

1）在一个活动中两个ViewPagers（未嵌套）

1) two ViewPagers (not nested) in one Activity

2）两个ViewPagers（一个ViewPager嵌套在另一个ViewPager中）

2) two ViewPagers (one ViewPager is nested in another ViewPager)

我发现了类似的问题，但我无法使用它。 ViewPager内的ViewPager

I found similar question, but I could not use it.ViewPager inside ViewPager

我添加了第一个ViewPager，不知道下一步该做什么

I add first ViewPager and do not know what to do next

LayoutInflater inflater = LayoutInflater.from(this); //this - context of my activity
List<View> pages = new ArrayList<View>();
View page = inflater.inflate(R.layout.activity_main, null);
//next I adding some buttons on page
pages.add(page);

page = inflater.inflate(R.layout.activity_main2, null);  //my second page
//some buttons
pages.add(page);

page = inflater.inflate(R.layout.activity_main3, null);  //my third page
//some buttons
pages.add(page);

SamplePagerAdapter pagerAdapter = new SamplePagerAdapter(pages);
ViewPager viewPager = new ViewPager(this);
viewPager.setAdapter(pagerAdapter);
viewPager.setCurrentItem(0);          
setContentView(viewPager);

如果我添加ViewPager2并说setContentView（viewPager2），则会丢失viewPager1。我花了很多时间来回答这两个问题，请帮忙...

If I add ViewPager2 and say setContentView(viewPager2), I lost my viewPager1. I spent a lot of time for this two questions, please, some help...

//这是我需要做的草图。
抱歉，我无法附加我的内容...

//This is my sketch what I need to do. Sorry, I can't attach my scetches...

推荐答案

我添加了 OnTouchListener 到内部 ViewPager ：

private OnTouchListener mSuppressInterceptListener = new OnTouchListener() {

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        if(
                event.getAction() == MotionEvent.ACTION_DOWN &&
                v instanceof ViewGroup
        ) {
                ((ViewGroup) v).requestDisallowInterceptTouchEvent(true);
        }
        return false;
    }
};

这只是检测内部 ViewPager 并阻止外层拦截它。因为它返回false，所以仅应击中ACTION_DOWN事件。所有其他事件将被忽略。您可以将此侦听器添加到要从外部 ViewPager 的滚动中保护的每个元素中，但是很显然，如果您想对这些元素进行其他触摸操作您需要在触摸监听器中处理它们，并可能实现更好的监听器。

This just detects ACTION_DOWN touch events on the inner ViewPager and prevents the outer one from intercepting it. Because it returns false, only the ACTION_DOWN event should be hit; all the other events will be ignored. You can add this listener to every element you want to "protect" from the outer ViewPager's scrolling, though obviously if you want to pick up any other touch behaviour on those elements you'll need to deal with them inside the touch listener and possibly implement a better listener.

这篇关于嵌套在ViewPager中的ViewPager的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！