如何使用两个片段实现视频和视频列表

Posted 2023-02-25

【中文标题】如何使用两个片段实现视频和视频列表

【英文标题】：How to implement Video and video list using two Fragments

【发布时间】：2012-08-30 12:41:22

【问题描述】：

我正在为HonyComb 创建一个应用程序，我必须在其中显示视频和视频列表。 为此，我创建了两个片段，一个用于显示视频，另一个用于 videoList。当用户单击视频列表时，该视频应在其他片段中的 videoview 开始播放。

我创建了自定义expandablelist 用于显示视频列表（因为我的视频被归类为组）。我必须显示视频图像、标题和描述，我已经为其创建了一个带有imageview 和两个textview 的布局。我能够显示视频列表。现在我被困在两点：

单击视频列表时无法播放视频。 onChildCLick() 未被调用，但 onTouch() 和 onGroupClick() 能够被调用。 我想在用户点击VideoView 时全屏播放视频。我不知道如何实现。

请帮帮我..

fragment_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_
android:layout_
android:orientation="horizontal" > 
<fragment
    android:id="@+id/detailFragment"
    android:layout_
    android:layout_
    android:layout_weight="1"
    class="com.abs.qpr.VideoFragment" >
</fragment>

<fragment
    android:id="@+id/listFragment"
    android:layout_
    android:layout_
    android:layout_weight="0.6"
    class="com.abs.qpr.VideoListFragment" > 
</fragment> 
</LinearLayout>

我的活动.java

 import android.os.Bundle;

 public class MyActivity extends android.support.v4.app.FragmentActivity

@Override
public void onCreate(Bundle savedInstanceState) 
    super.onCreate(savedInstanceState);
    setContentView(R.layout.fragment_layout);

VideoFragment.java

import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;

public class VideoFragment extends Fragment
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
  Bundle savedInstanceState) 
Log.d("VideoFragment", "On Create View");

View view = inflater.inflate(R.layout.activity_my_video, container,  false);
return view;

 

  @Override
  public void onActivityCreated(Bundle savedInstanceState) 
super.onActivityCreated(savedInstanceState);
   

public void playVideo() 

VideoView myVideoView2=  (VideoView)getView().findViewById(R.id.my_tecnique_video);
String temp="android.resource://" + getActivity().getApplicationContext().getPackageName() + "/" 
+ R.raw.back_circles;

System.out.println(temp + ": " + getActivity().getApplicationContext());
 Uri video = Uri.parse("android.resource://" + getActivity().getApplicationContext().getPackageName() + "/" 
            + R.raw.back_circles);

    myVideoView2.setVideoURI(video);
    myVideoView2.setMediaController(new MediaController(getActivity()));
    myVideoView2.requestFocus();
    myVideoView2.start();
  

VideoListFragment.java

public class VideoListFragment extends Fragment 
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
    Bundle savedInstanceState) 
Log.e("VideoFragment", "On Create View");
View view = inflater.inflate(
        R.layout.activity_my_techniques_video_list, container, false);
return view;


@Override
public void onActivityCreated(Bundle savedInstanceState) 
super.onActivityCreated(savedInstanceState);
Log.e("VideoListFragment", "On Activity Created ");

ExpandableListView expList = (ExpandableListView) getView()
        .findViewById(R.id.my_tech_video_listview);

expList.setAdapter(new VideoExpandableListAdapter(getActivity()));

expList.setOnChildClickListener(new OnChildClickListener() 

 @Override
 public boolean onChildClick(ExpandableListView expandablelistview,
            View view, int i, int j, long l) 

        // TODO Auto-generated method stub
        Log.d("Checking.....", "onGroupClick()");

        VideoFragment fragment = (VideoFragment) getFragmentManager()
                .findFragmentById(R.id.detailFragment);
        if (fragment != null && fragment.isInLayout()) 
            fragment.playVideo();
         else 

            Intent videointent = new Intent(getActivity()
                    .getApplicationContext(), VideoActivity.class);

            startActivity(videointent);

        

        return false;
    
);

VideoExpandableListAdapter.java

public class VideoExpandableListAdapter extends BaseExpandableListAdapter

private Context myContext;
ArrayList<VideoListVO> videoListVO;

public VideoExpandableListAdapter(Context context) 
myContext = context;        


@Override
public Object getChild(int groupPosition, int childPosition) 
// TODO Auto-generated method stub
return null;


@Override
public long getChildId(int groupPosition, int childPosition) 
// TODO Auto-generated method stub
return 0;


@Override
public View getChildView(int groupPosition, int childPosition,
    boolean isLastChild, View convertView, ViewGroup parent) 

if (convertView == null) 
    LayoutInflater inflater = (LayoutInflater) myContext
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    convertView = inflater.inflate(R.layout.childrow, null);



VideoListVO vlvo= videoListVO.get(groupPosition);
VideoDetailsVO vdvo=vlvo.getVideoDetailList().get(childPosition);

InputStream is = null;
try 
    String imageName=vdvo.getImageName();
    imageName="images/"+imageName+".png";
  is = myContext.getResources().getAssets().open(imageName);
 catch (IOException e) 
  Log.w("EL", e);


Bitmap image = BitmapFactory.decodeStream(is);

ImageView ib2 = (ImageView) convertView.findViewById( R.id.video_image);
ib2.setImageBitmap(image);

TextView titleText=(TextView)convertView.findViewById(R.id.video_title_text);
titleText.setText(vdvo.getVideoTitle());

TextView descriptionText=(TextView)convertView.findViewById(R.id.video_description);
descriptionText.setText(vdvo.getVideoDescription());

return convertView;


@Override
public int getChildrenCount(int groupPosition) 
// TODO Auto-generated method stub
return videoListVO.get(groupPosition).getVideoDetailList().size();


@Override
public Object getGroup(int groupPosition) 
// TODO Auto-generated method stub
return null;


@Override
public int getGroupCount() 
// TODO Auto-generated method stub
return videoListVO.size();


@Override
public long getGroupId(int groupPosition) 
// TODO Auto-generated method stub
return 0;


@Override
public View getGroupView(int groupPosition, boolean isExpanded,
    View convertView, ViewGroup parent) 

if (convertView == null) 
    LayoutInflater inflater =  (LayoutInflater) myContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    convertView = inflater.inflate(R.layout.group_row, null);
   
TextView tvGroupName = (TextView) convertView.findViewById(R.id.tvgrpname);
tvGroupName.setText(videoListVO.get(groupPosition).getVideoType());

return convertView;


@Override
public boolean hasStableIds() 
// TODO Auto-generated method stub
return false;


@Override
public boolean isChildSelectable(int groupPosition, int childPosition) 
// TODO Auto-generated method stub
return true;

【问题讨论】：

能否分享您的代码以便我们提供帮助

@EldhoseMBabu 我已经添加了代码..

【参考方案1】：

请从 ListFragment 扩展 VideoListFragment（正确方式），您可以在其中直接设置适配器，可以收听 listitemclick 事件等，这将有助于解决您的问题。

为此，您可以阅读this 教程。

然后解决您的第二个问题（点击时全屏查看）：

当用户触摸视频部分两次（点击）（您可以借助 ontouchlistener 和计时器来检查是否发生连续触摸），调用视图部分中的另一个活动，设计为全屏看法。所以当用户点击返回时，它会回到片段活动。

【讨论】：

感谢您的快速回复...我在我的视频列表中使用ExpandableListView 我无法扩展ListFragment并且不支持扩展ExpandableListFragment。我会尝试你的逻辑视频视图。

你能在我的代码中看到为什么onChildClickListener()没有被调用

我没有发现你的代码有任何问题。你可以试试 setOnItemClickListener 吗？？