android - 在 android 中使用布局适配器时，在线性布局中重复显示标题图像

Question

我正在开发一个安卓应用程序。我需要在我的页面上显示搜索结果。我页面中的线性布局由我用作标题的图像组成。布局适配器和 View 支架用于显示详细信息。问题是当我得到结果时，每个搜索结果都会显示标题图像。我只需要显示一次图像标题，我该怎么做。这是我的布局和代码。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/main_layout"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout 
            android:id="@+id/main_layout1"
            android:orientation="vertical"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent" >
 <ImageView
            android:id="@+id/imageheader"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="5dip"

           android:src="@drawable/logo" 
            android:adjustViewBounds="true"/>
  <!--  -->
</LinearLayout>
<ScrollView 
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:fillViewport="true"
android:id="@+id/ScrollViewSearch" >

<LinearLayout
       android:id="@+id/main_layout2"
      android:orientation="vertical"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:padding="10dip">

<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="5dip" >

<LinearLayout android:id="@+id/thumbnail"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="3dip"
    android:layout_alignParentLeft="true"
    android:layout_marginRight="5dip">

     <ProgressBar
    android:id="@+id/progressBar"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerVertical="true"
    android:paddingLeft="15dp" />

</LinearLayout>
<TextView
    android:id="@+id/textViewUser1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"

   />
<TextView
    android:id="@+id/textViewUser"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_toRightOf="@+id/textViewUser1"
    android:text="Maradona"      
    android:paddingLeft="10dp"/>

<!-- Artist Name -->
<TextView
    android:id="@+id/textViewUserid"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Maradoncssdsdsda"      
    android:textColor="#343434"
    android:textSize="12dip"
    android:layout_toRightOf="@+id/textViewUser1"
    android:layout_below="@+id/textViewUser"
    android:paddingLeft="10dp"/>


   </RelativeLayout>
<AbsoluteLayout
    android:id="@+id/tableRow3"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="5dip" >

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="25dp"
        android:layout_height="19dp"
        android:layout_marginBottom="5dip"/>

    <TextView
        android:id="@+id/textView4"
        android:layout_width="110dp"
        android:layout_height="wrap_content"
        android:layout_x="25dp"
        android:layout_y="3dp"
        android:paddingRight="10dp"
        android:text=" Send Message"
        android:clickable="true"
        android:textColor="#028dca"
        android:textSize="12dip" />
  <ImageView
        android:id="@+id/imageView1"
        android:layout_width="25dp"
        android:layout_height="19dp"
        android:layout_marginBottom="5dip"

        android:layout_x="120dp"
        android:layout_y="3dp" />

  <TextView
        android:id="@+id/textView4"
        android:layout_width="90dp"
        android:layout_height="wrap_content"
        android:layout_x="150dp"
        android:layout_y="3dp"
        android:paddingRight="10dp"
        android:text="Full Profile "
        android:textColor="#028dca"
        android:textSize="12dip"/>

  </AbsoluteLayout>

  </LinearLayout>
  </ScrollView>
  </LinearLayout>

类文件是

public class LazyAdapter extends BaseAdapter {
private ListActivity activity;
private LayoutInflater layoutInflater;
private ArrayList<String> names;
private FbUser[] folks;
private int folksNumber = 0;


public LazyAdapter(ListActivity activity, ArrayList<String> names) {
    super();

    this.activity = activity;
    this.names = names;
    this.folks = new FbUser[this.names.size()];
    layoutInflater = (LayoutInflater) activity
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    new FetchDataTask(this, 0).execute(new Void[]{});
}



public View getView(int position, View convertView, ViewGroup parent) {
    FbUser cachedUser = folks[position]; // trying to get a user from cache

    View item = convertView;
    ViewHolder viewHolder;

    /**
     * If item has not been created yet, we inflate it and pass its personal
     * ViewHolder as a tag parameter. Otherwise we just get an existing
     * ViewHolder.
     */
    if (item == null) {
        //LinearLayout aa=(LinearLayout)item.findViewById(R.id.main_layout);
        item = layoutInflater.inflate(R.layout.quicksearchresult, null);
        viewHolder = new ViewHolder();

        viewHolder.textView = (TextView) item.findViewById(R.id.textViewUser);
        viewHolder.textView1 = (TextView) item.findViewById(R.id.textViewUserid);
        viewHolder.textView2 = (TextView) item.findViewById(R.id.textViewUser1);
        viewHolder.spinner = (ProgressBar) item.findViewById(R.id.progressBar);
        item.setTag(viewHolder);





    } else {
        viewHolder = (ViewHolder) item.getTag();
    }

    /**
     * If the current user has been fetched we put cached data to the view.
     * Otherwise we clear the view.
     */
    if (cachedUser != null) {

        viewHolder.textView.setText(cachedUser.getName());
        viewHolder.textView1.setText(cachedUser.getUserid());
        viewHolder.spinner.setVisibility(View.GONE);
        viewHolder.textView2.setCompoundDrawablesWithIntrinsicBounds(
                new BitmapDrawable(activity.getResources(), cachedUser
                        .getBitmap()), null, null, null);


    } else {
        viewHolder.textView.setText("");
        viewHolder.spinner.setVisibility(View.VISIBLE);
        viewHolder.textView.setCompoundDrawablesWithIntrinsicBounds(
                null, null, null, null);
        viewHolder.textView1.setCompoundDrawablesWithIntrinsicBounds(
                null, null, null, null);
    }

    return item;
}


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

@Override
public Object getItem(int position) {
    return names.get(position);
}


@Override
public long getItemId(int position) {
    return 0;
}


public void cacheUser(FbUser user) {
    folks[folksNumber] = user;
    folksNumber++;
    notifyDataSetChanged(); //reload ListView
}


private static class ViewHolder {
    public TextView textView,textView1,textView2;
    public ImageView image1;
    public LinearLayout lay;
    public ProgressBar spinner;
}

Answer 1

似乎对于列表中的每个项目，您都在膨胀整个 xml 文件。您想要将该 xml 文件拆分为两个不同的文件，一个包含标题和一个 ListView (activity_layout.xml)，然后另一个将是每个单独行的布局 (row_layout.xml)。然后在您的适配器类中，对于每个项目，使用 row_layout.xml 填充单独的行。