如何将 viewpager 放入 android 中的片段中？

Question

我有一个 activity，我可以在此 activity 上显示一些关于框架布局的片段。我想将一个由片段组成的 viewpager 放在片段而不是 FragmentActivity 中。如何做到这一点？

Answer 1

要使 ViewPager 位于片段中，并使片段成为 ViewPager 中的页面，您需要使用嵌套片段。如果您的 minSdkVersion 为 17 或更高，则片段的本机实现支持嵌套片段。否则，您将需要使用片段的 support-v13（或 support-v4）向后移植。

那么，你只需要给你的FragmentPagerAdapter或FragmentStatePagerAdapter:getChildFragmentManager():

/***
  Copyright (c) 2012 CommonsWare, LLC
  Licensed under the Apache License, Version 2.0 (the "License"); you may not
  use this file except in compliance with the License. You may obtain a copy
  of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless required
  by applicable law or agreed to in writing, software distributed under the
  License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
  OF ANY KIND, either express or implied. See the License for the specific
  language governing permissions and limitations under the License.

  From _The Busy Coder's Guide to Android Development_
    http://commonsware.com/Android
 */

package com.commonsware.android.pagernested;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class PagerFragment extends Fragment {
  @Override
  public View onCreateView(LayoutInflater inflater,
                           ViewGroup container,
                           Bundle savedInstanceState) {
    View result=inflater.inflate(R.layout.pager, container, false);
    ViewPager pager=(ViewPager)result.findViewById(R.id.pager);

    pager.setAdapter(buildAdapter());

    return(result);
  }

  private PagerAdapter buildAdapter() {
    return(new SampleAdapter(getActivity(), getChildFragmentManager()));
  }
}

（来自 this sample project）

如何将 viewpager 放入 android 中的片段中？

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