Question

我在为联赛表创建布局时遇到了一些问题。在我当前的布局中，我创建了一个包含两行的表。第一行有我想要的标题，第二行有黑色字段，由获得的数据组成。我从我的服务器获取包含xml文件的数据。我遇到的问题是没有得到数据，因为我可以这样做..问题是，当我显示数据时，我使用ListAdapter，需要一个链接到它的布局。但是当我链接相应的布局时，我会在每一行之后重复标题...例如

TEAM P W L D P

阿森纳1 1 1 1 1

TEAM P W L D P

Aston Villa 1 1 1 1 1

我确定这是一个简单的错误修复....也许我还有别的东西来显示数据???

以下是主

的代码

public class tab_1 extends ListActivity {

    public int a = Football_appActivity.league;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.listplaceholder);

        ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();

        if(a==1){
            String xml = XMLfunctions.getXML_prem_table();
            Document doc = XMLfunctions.XMLfromString(xml);
            int numResults = XMLfunctions.numResults(doc);

            if((numResults <= 0)){
                Toast.makeText(tab_1.this, "League Table", Toast.LENGTH_LONG).show();
                finish();
            }

            NodeList nodes = doc.getElementsByTagName("team");

            for (int i = 0; i < nodes.getLength(); i++) {
                HashMap<String, String> map = new HashMap<String, String>();

                Element e = (Element)nodes.item(i);
                map.put("id", XMLfunctions.getValue(e, "id"));
                map.put("name", "" + XMLfunctions.getValue(e, "name"));
                map.put("played", "" + XMLfunctions.getValue(e, "played"));
                map.put("won", "" + XMLfunctions.getValue(e, "won"));
                map.put("drawn", "" + XMLfunctions.getValue(e, "drawn"));
                map.put("lost", "" + XMLfunctions.getValue(e, "lost"));
                map.put("points", "" + XMLfunctions.getValue(e, "points"));
                mylist.add(map);
            }
            **
            ListAdapter adapter = new SimpleAdapter(this, mylist , R.layout.main_tab,
                new String[] { "name", "played", "won", "drawn", "lost", "points"},
                new int[] { R.id.item_title, R.id.item_played, R.id.item_won,
                R.id.item_drawn, R.id.item_lost, R.id.item_points});**

            setListAdapter(adapter);

            final ListView lv = getListView();
            lv.setTextFilterEnabled(true);
            lv.setOnItemClickListener(new OnItemClickListener() {
                public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                    @SuppressWarnings("unchecked")
                    HashMap<String, String> o = (HashMap<String, String>) lv.getItemAtPosition(position);
                    Toast.makeText(tab_1.this, o.get("name") + " have Won '" + o.get("won") + "' games, and are currently on '" + o.get("points") + "' points!", Toast.LENGTH_LONG).show();
                }
            });
        }

以下是名为main_tab.xml的布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="7dp"
>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:stretchColumns="1"
android:id="@+id/table123">
<TableRow>
<TextView 
    android:text="Name"
    android:id="@+id/team_title">
    </TextView>
<TextView android:text="P "
    android:gravity="right"
    android:id="@+id/team_played">
</TextView>
<TextView android:text="W"
    android:id="@+id/team_won">
</TextView>
<TextView android:text="D"
    android:id="@+id/team_drawn">
</TextView>
<TextView android:text="L"
    android:id="@+id/team_lost">
</TextView>
<TextView android:text="P"
    android:id="@+id/team_points">
</TextView>
</TableRow>

<TableRow>
    <TextView  
        android:id="@+id/item_title"
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content" 
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:padding="2dp"
        android:textSize="20dp" />
        <TextView  
        android:id="@+id/item_played"
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content"
        android:gravity="right" 
        android:padding="2dp"
        android:textSize="13dp" />
        <TextView  
        android:id="@+id/item_won"
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content"
        android:padding="2dp"
        android:textSize="13dp" />
        <TextView  
        android:id="@+id/item_drawn"
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content"
        android:padding="2dp"
        android:textSize="13dp" />
        <TextView  
        android:id="@+id/item_lost"
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content"
        android:padding="2dp"
        android:textSize="13dp" />
        <TextView  
        android:id="@+id/item_points"
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content"
        android:padding="2dp"
        android:textSize="13dp" />
        </TableRow>
        </TableLayout>

</LinearLayout>

以下是ListPlaceHolder.XML的loyout

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent">    

<ListView
    android:id="@id/android:list"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:drawSelectorOnTop="false" />

<TextView
    android:id="@id/android:empty"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="No data">
    </TextView>

</LinearLayout>

好酷..所以我改变了main_tab.xml的布局，并创建了一个名为table_header.xml的新布局，其中包含了联盟的标题，例如：名字，玩过，赢了，丢失等......但是现在我在logcat中有一个错误..下面是主页的代码......

if(a==1){
            String xml = XMLfunctions.getXML_prem_table();
            Document doc = XMLfunctions.XMLfromString(xml);
             int numResults = XMLfunctions.numResults(doc);

             if((numResults <= 0)){
                Toast.makeText(tab_1.this, "League Table", Toast.LENGTH_LONG).show();  
                finish();
             }

            NodeList nodes = doc.getElementsByTagName("team");

            setContentView(R.layout.table_header);

            for (int i = 0; i < nodes.getLength(); i++) {                           
                HashMap<String, String> map = new HashMap<String, String>();    

                Element e = (Element)nodes.item(i);
                map.put("id", XMLfunctions.getValue(e, "id"));
                map.put("name", "" + XMLfunctions.getValue(e, "name"));
                map.put("played", "" + XMLfunctions.getValue(e, "played"));
                map.put("won", "" + XMLfunctions.getValue(e, "won"));
                map.put("drawn", "" + XMLfunctions.getValue(e, "drawn"));
                map.put("lost", "" + XMLfunctions.getValue(e, "lost"));
                map.put("points", "" + XMLfunctions.getValue(e, "points"));
                mylist.add(map);            
            }       

             ListAdapter adapter = new SimpleAdapter(this, mylist , R.layout.main_tab, 
                             new String[] { "name", "played", "won", "drawn", "lost", "points"}, 
                             new int[] { R.id.item_title, R.id.item_played, R.id.item_won,
                                        R.id.item_drawn, R.id.item_lost, R.id.item_points});

             setListAdapter(adapter);

             final ListView lv = getListView();
             lv.setTextFilterEnabled(true); 
             lv.setOnItemClickListener(new OnItemClickListener() {
                public void onItemClick(AdapterView<?> parent, View view, int position, long id) {              
                    @SuppressWarnings("unchecked")
                    HashMap<String, String> o = (HashMap<String, String>) lv.getItemAtPosition(position);                   
                    Toast.makeText(tab_1.this, o.get("name") + " have Won '" + o.get("won") + "' games, and are currently on '" + o.get("points") + "' points!", Toast.LENGTH_LONG).show(); 

                }
            });

更改我使用的布局的行是：的setContentView（R.layout.table_header）;

这是正确的????

我得到的第一个错误是（有一个很长的列表，但我认为这是原因）：

04-15 09：46：42.268：E / AndroidRuntime（346）：java.lang.RuntimeException：无法启动活动ComponentInfo {com.julian.football_app / com.julian.football_app.tab_1}：java.lang。 RuntimeException：您的内容必须具有一个ListView，其id属性为'android.R.id.list'

Answer 1

如你所料，问题就在这里：

ListAdapter adapter = new SimpleAdapter(this, mylist , R.layout.main_tab,
    new String[] { "name", "played", "won", "drawn", "lost", "points"},
    new int[] { R.id.item_title, R.id.item_played, R.id.item_won,
    R.id.item_drawn, R.id.item_lost, R.id.item_points});

特别是：

R.layout.main_tab

这应该是列表行布局。由于您提供了标题和数据，因此它会为每个列表行重复标题。将它们分开。您需要为列表创建一个布局。基本上从该文件中删除第二个TableLayout，将其放在它自己的XML文件中，并为列表适配器调用该文件。在main_tab中的标题表布局下添加ListView。

<强> row_layout.xml

<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/myTableLayout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <TableRow>
    <TextView  
            android:id="@+id/item_title"
            android:layout_width="fill_parent" 
            android:layout_height="wrap_content" 
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:padding="2dp"
            android:textSize="20dp" />
    <TextView  
            android:id="@+id/item_played"
            android:layout_width="fill_parent" 
            android:layout_height="wrap_content"
            android:gravity="right" 
            android:padding="2dp"
            android:textSize="13dp" />
    <TextView  
            android:id="@+id/item_won"
            android:layout_width="fill_parent" 
            android:layout_height="wrap_content"
            android:padding="2dp"
            android:textSize="13dp" />
    <TextView  
            android:id="@+id/item_drawn"
            android:layout_width="fill_parent" 
            android:layout_height="wrap_content"
            android:padding="2dp"
            android:textSize="13dp" />
    <TextView  
            android:id="@+id/item_lost"
            android:layout_width="fill_parent" 
            android:layout_height="wrap_content"
            android:padding="2dp"
            android:textSize="13dp" />
    <TextView  
            android:id="@+id/item_points"
            android:layout_width="fill_parent" 
            android:layout_height="wrap_content"
            android:padding="2dp"
            android:textSize="13dp" />
            </TableRow>
    </TableLayout>

联盟表的布局

1 个答案: