android - 无法为 ListView 添加标题栏

Question

我的屏幕要求就像在顶部中间有一个标题栏，然后是 ListView ，当我试图这样做时我无法做到，就像我在每个列表项中都有州名一样。我只希望在顶部和一次。它的屏幕截图是

 <?xml version="1.0" encoding="utf-8"?>
    <TableLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="fill_parent"
     android:layout_height="fill_parent"
        >
      <TableRow>
      <TextView 
         android:layout_height="wrap_content"
         android:layout_width="fill_parent"
         android:background="#000000"
         android:text="Select State"
                
      ></TextView>
      </TableRow>
      <TableRow> 
      <TextView  android:layout_width="wrap_content"
          android:layout_height="fill_parent"
          
           android:id="@+id/label"
          android:textSize="30px"></TextView>
    </TableRow>
    </TableLayout>

我试过很多方法这是我现在的布局

我的java代码是

import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class new21 extends ListActivity {
    /** Called when the activity is first created. */
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        // Create an array of Strings, that will be put to our ListActivity
        String[] names = new String[] { "Andhra Pradesh", "Kerala","Tamilnadu","Karnataka" };
        // Use your own layout and point the adapter to the UI elements which
        // contains the label
        this.setListAdapter(new ArrayAdapter<String>(this, R.layout.new21,
                R.id.label, names));
    }

    @Override
    
    protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);
        // Get the item that was clicked
        Object o = this.getListAdapter().getItem(position);
        String keyword = o.toString();
        if(keyword.equals("Andhra Pradesh"))
        {
            Intent ima45=new Intent(new21.this,new31.class);
            startActivity(ima45);
    
        }
        Toast.makeText(this, "You selected: " + keyword, Toast.LENGTH_LONG)
                .show();
        
    }

}

谁能帮帮我。

Answer 1

你可以像这样将Header添加到ListView，

View header = getLayoutInflater().inflate(R.layout.header, null);
ListView listView = getListView();
listView.addHeaderView(header);
setListAdapter(new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_single_choice, names));

R.layout.header 是包含带有文本 "Select State" 的 TextView 的布局

更新:

public class ListViewProblemActivity extends ListActivity {

    ListView listView;

    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        // Create an array of Strings, that will be put to our ListActivity
        String[] names = new String[] { "Andhra Pradesh", "Kerala","Tamilnadu","Karnataka" };
        // Use your own layout and point the adapter to the UI elements which
        // contains the label

        TextView tv = new TextView(getApplicationContext());
        tv.setText("Select State");

        listView = getListView();
        listView.addHeaderView(tv);
        this.setListAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_expandable_list_item_1,names));
    }

    @Override

    protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);
        // Get the item that was clicked

        if(position != 0){
            System.out.println(position - 1);
            Object o = this.getListAdapter().getItem(position - 1);
            String keyword = o.toString();
            Toast.makeText(this, "You selected: " + keyword, Toast.LENGTH_LONG)
                    .show();
        }
    }
}