使用VideoView、可扩展ListView和可滚动TextView构建XML布局

Question

我在构建一个XML布局时遇到了一个问题：屏幕的一半是videoView，有两个孩子的可扩展列表，视频框下面有一些textView。文本位于列表下方，因此如果我展开列表，列表将填充半屏幕的其余部分，它应该能够滚动到文本视图。

我的想法是将可扩展列表放在滚动视图中，但我无法扩展列表。

我的布局如下：

• 线性布局
  • 视频视图
  • 滚动视图
    • 线性布局
      • 可扩展列表视图
      • 文本视图

      有没有其他方法来实现我的意图，或者为什么我不能扩展我的列表。

      编辑：XML布局：

      <?xml version="1.0" encoding="utf-8"?>
      <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
          xmlns:tools="http://schemas.android.com/tools"
          android:layout_width="fill_parent"
          android:layout_height="fill_parent"
          android:orientation="vertical" >
      
      <VideoView
          android:id="@+id/video_player_h"
          android:layout_width="match_parent"
          android:layout_height="0px"
          android:layout_weight="1" />
      
      <ScrollView
          android:layout_width="match_parent"
          android:layout_height="0px"
          android:layout_weight="1" >
      
          <ExpandableListView
              android:id="@+id/expandableList"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:groupIndicator="@drawable/group_indicator" >
      
              <TextView
                  android:id="@+id/android:empty"
                  android:layout_width="fill_parent"
                  android:layout_height="wrap_content"
                  android:text="Empty" >
              </TextView>
      
              <RelativeLayout
                  android:layout_width="fill_parent"
                  android:layout_height="wrap_content"
                  android:orientation="horizontal" >
      
                  <TextView
                      android:id="@+id/view_text"
                      android:layout_width="wrap_content"
                      android:layout_height="wrap_content"
                      android:layout_alignParentLeft="true"
                      android:gravity="center"
                      android:paddingLeft="10dp"
                      android:text="Views: "
                      android:textSize="16sp" />
      
                  <TextView
                      android:layout_width="wrap_content"
                      android:layout_height="wrap_content"
                      android:layout_toRightOf="@id/view_text"
                      android:gravity="center"
                      android:hint="12345"
                      android:paddingLeft="10dp"
                      android:textSize="16sp" />
      
                  <RatingBar
                      style="@style/newRatingBar"
                      android:layout_width="wrap_content"
                      android:layout_height="wrap_content"
                      android:layout_alignParentRight="true"
                      android:isIndicator="false"
                      android:numStars="5"
                      android:rating="3" />
              </RelativeLayout>
      
              <RelativeLayout
                  android:layout_width="fill_parent"
                  android:layout_height="wrap_content"
                  android:orientation="horizontal" >
      
                  <TextView
                      android:id="@+id/date_text"
                      android:layout_width="wrap_content"
                      android:layout_height="wrap_content"
                      android:layout_alignParentLeft="true"
                      android:paddingLeft="10dp"
                      android:text="Date: "
                      android:textSize="16sp" />
      
                  <TextView
                      android:id="@+id/date_video"
                      android:layout_width="wrap_content"
                      android:layout_height="wrap_content"
                      android:layout_toRightOf="@id/date_text"
                      android:hint="11.11.1111"
                      android:textSize="16sp" />
      
                  <TextView
                      android:id="@+id/uploader"
                      android:layout_width="wrap_content"
                      android:layout_height="wrap_content"
                      android:layout_alignParentRight="true"
                      android:hint="Mr. X"
                      android:paddingRight="10dp"
                      android:textSize="16sp" />
      
                  <TextView
                      android:id="@+id/user_text"
                      android:layout_width="wrap_content"
                      android:layout_height="wrap_content"
                      android:layout_toLeftOf="@id/uploader"
                      android:text="User: "
                      android:textSize="16sp" />
              </RelativeLayout>
          </ExpandableListView>
      </ScrollView>
      
      </LinearLayout>
      

      课程：

      public class Player extends Activity {
      ExpandableListView titleList;
      VideoView videoView;
      ExpandableListAdapter exp;
      
      private static final String OUTPUT_FILE="/storage/sdcard0/bigbuckbunny.3gp";
      
      public int GetDipsFromPixel(float pixels)
      {
       float scale = getResources().getDisplayMetrics().density;
       return (int) (pixels * scale + 0.5f);
      }
      
      
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.play_activity);
      
          videoView = (VideoView) findViewById(R.id.video_player_h);
          MediaController mc = new MediaController(this);
          videoView.setMediaController(mc);
          videoView.setVideoPath(OUTPUT_FILE);
      
          if (getResources().getConfiguration().orientation == 1) {
              titleList = (ExpandableListView) findViewById(R.id.expandableList);
      
              ArrayList<String> groupList = new ArrayList<String>();
              groupList.add("Titel");
              ArrayList<ArrayList<String>> childrenList = new ArrayList<ArrayList<String>>();
              ArrayList<String> childrenElement = new ArrayList<String>();
              childrenElement.add("Beschreibung");
              childrenList.add(childrenElement);
              ExpandableListAdapter listAdapter = new ExpandableAdapter(this, groupList, childrenList);
      
              DisplayMetrics metrics = new DisplayMetrics();
              getWindowManager().getDefaultDisplay().getMetrics(metrics);
              int width = metrics.widthPixels;
      
              titleList.setIndicatorBounds(width - GetDipsFromPixel(50), width - GetDipsFromPixel(10));
              titleList.setAdapter(listAdapter);
              titleList.setDividerHeight(1);
              titleList.setClickable(false);
      
          }
      
      }
      
      class ExpandableAdapter implements ExpandableListAdapter {
      
          Context context;
          ArrayList<String> groups;
          ArrayList<ArrayList<String>> children;
      
          public ExpandableAdapter(Context context, ArrayList<String> groups, ArrayList<ArrayList<String>> children) {
              this.context = context;
              this.groups = groups;
              this.children = children;
          }
      
      
          public Object getChild(int groupPosition, int childPosition) {
              return children.get(groupPosition).get(childPosition);
          }
      
          public long getChildId(int groupPosition, int childPosition) {
              return childPosition;
          }
      
          public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
              if(convertView==null){
                  LayoutInflater inflator = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                  convertView  = inflator.inflate(R.layout.title_child, null);
              }
              TextView text = (TextView) convertView.findViewById(R.id.child_field);
              text.setText(children.get(groupPosition).get(childPosition));
              return convertView;
          }
      
          public int getChildrenCount(int groupPosition) {
              return children.get(groupPosition).size();
          }
      
          public Object getGroup(int groupPosition) {
              return groups.get(groupPosition);
          }
      
          public int getGroupCount() {
               return groups.size();
          }
      
          public long getGroupId(int groupPosition) {
              return groupPosition;
          }
      
          public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
              if(convertView==null){  
                  LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                  convertView = inflater.inflate(R.layout.title_group, null);
              }
              TextView text = (TextView) convertView.findViewById(R.id.group_field);
              text.setText(groups.get(groupPosition));
              return convertView;
          }
      
          public boolean hasStableIds() {
              return true;
          }
      
          public boolean isChildSelectable(int groupPosition, int childPosition) {
              return true;
          }
      
          public boolean areAllItemsEnabled() {
              return false;
          }
      
          public long getCombinedChildId(long groupId, long childId) {
              return 0;
          }
      
          public long getCombinedGroupId(long groupId) {
              return 0;
          }
      
          public boolean isEmpty() {
              return false;
          }
      
          public void onGroupCollapsed(int groupPosition) {
          }
      
          public void onGroupExpanded(int groupPosition) {
          }
      
          public void registerDataSetObserver(DataSetObserver observer) {
          }
      
          public void unregisterDataSetObserver(DataSetObserver observer) {
          }
      
      }
      }
      

Answer 1

当然，我的建议是

>

滚动视图

• 可扩展列表
  • 文本视图1
  • 文本视图2
  • 等等

  <ExpandableListView
      android:id="@+id/android:list"
      android:layout_width="match_parent"
      android:layout_height="fill_parent"
      android:groupIndicator="@drawable/group_indicator">
  
      <TextView 
          android:id="@+id/android:empty" 
          android:layout_width="fill_parent" 
          android:layout_height="wrap_content" 
          android:text="Empty">      
      </TextView>
  
  
  <RelativeLayout
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:orientation="horizontal" >
  
      <TextView
          android:id="@+id/view_text"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:gravity="center"
          android:paddingLeft="10dp"
          android:text="Views: "
          android:textSize="16sp" />
  
      <TextView
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_toRightOf="@id/view_text"
          android:gravity="center"
          android:paddingLeft="10dp"
          android:hint="12345"
          android:textSize="16sp" />
  
  </RelativeLayout>
  
  <RelativeLayout
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:orientation="horizontal" >
  
      <TextView
          android:id="@+id/date_text"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:paddingLeft="10dp"
          android:text="Date: "
          android:textSize="16sp" />
  
      <TextView
          android:id="@+id/date_video"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_toRightOf="@id/date_text"
          android:hint="11.11.1111"
          android:textSize="16sp" />
   </RelativeLayout>
  </ExpandableListView>
  </ScrollView>