活动之间的Android PagerView [英] Android PagerView between Activities

问题描述

我希望能够在五个活动/屏幕之间滑动，每个活动/屏幕都有不同的功能但相互关联，因此在每个活动/屏幕之间滑动的 UI 概念.

I have five activities/screens that I would like to be able to swipe between, each has a different function but are interrelated hence the UI concept of swiping between each.

我发现了很多关于 ViewPager 和 PagerAdapters 等的讨论，但似乎找不到在不同活动屏幕之间滑动切换的讨论.

I have found many discussions around ViewPager and PagerAdapters etc. but cannot seem to find one where swiping switches between different activity screens.

这甚至可能吗?有人可以用源代码指出我的示例项目吗?或者告诉我如何调整现有教程来做我想做的事?

Is this even possible? Could someone point me towards an example project of this with source code? Or show me how to adapt an existing tutorial to do what I wish?

非常感谢，祝你好运！

推荐答案

您不能使用 ViewPager 在 Activity 之间滑动.您需要将五个 Activity 中的每一个转换为 Fragments，然后将所有内容与您的 Adapter 组合在一个 FragmentActivity 中与 ViewPager 一起使用.

You can't use ViewPager to swipe between Activities. You need to convert each of you five Activities into Fragments, then combine everything in one FragmentActivity with the Adapter you use with ViewPager.

这是一个链接，进入有关转换当前Activity 信息Fragments 的详细信息.

Here's a link that goes into detail on converting your current Activities info Fragments.

这是 Android 开发者网站上的 Fragment 主题，它有很多有用的信息.

This is the Fragment topic on the Android Developers website, it has a lot of useful info.

这是另一个示例(完整源代码)，它在每个页面上扩充了 TextViews.

Here's another example (full source) that inflates TextViews on each page.

这是我输入的示例:

PagerAdapter:

public class PagerAdapter extends FragmentPagerAdapter {

    private final List<Fragment> mFragments = new ArrayList<Fragment>();

    public PagerAdapter(FragmentManager manager) {
        super(manager);
    }

    public void addFragment(Fragment fragment) {
        mFragments.add(fragment);
        notifyDataSetChanged();
    }

    @Override
    public int getCount() {
        return mFragments.size();
    }

    @Override
    public Fragment getItem(int position) {
        return mFragments.get(position);
    }
}

这应该在 FragmentActivity 的 onCreate 中调用:

    private void initPaging() {

    FragmentOne fragmentOne = new FragmentOne();
    FragmentTwo fragmentTwo= new FragmentTwo();

    PagerAdapter pagerAdapter = new PagerAdapter(getSupportFragmentManager());
    pagerAdapter.addFragment(fragmentOne);
    pagerAdapter.addFragment(fragmentTwo);

    ViewPager viewPager = (ViewPager) findViewById(R.id.viewPager);
    viewPager.setAdapter(pagerAdapter);
}

这是您用于 FragmnetActivity 的布局示例:

This is an example of the layout you'd use for your FragmnetActivity:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

<android.support.v4.view.ViewPager
    android:id="@+id/viewPager"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

</LinearLayout>

要创建Fragment，请创建一个扩展Fragment 的新类.您要覆盖的前两个方法是onActivityCreated和onCreateView.

To create Fragment create a new class that extends Fragment. The first two methods you'll want to override are onActivityCreated and onCreateView.

您可以这样做:

public class FragmentOne extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    View view = inflater.inflate(THE_LAYOUT_FROM_YOUR_ORIGINAL_ACTIVITY, container, false);
    return view;
    }
}

这篇关于活动之间的Android PagerView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！