如何将页脚添加到 listView with Adapter ?
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent>
<TextView
android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</TextView>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
</RelativeLayout>
我试过这个:
public class message extends ListActivity {
List<SMSData2> smsList2 = new ArrayList<SMSData2>();
private Context context = null;
private ListView list = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
list = (ListView)findViewById(android.R.id.list);
//code to set adapter to populate
for (int i=0;; i < 10; i++) {
SMSData2 sms2 = new
sms2.setBody(c.getString("some text");
smsList2.add(sms2);
setListAdapter(new ListAdapter2(this, smsList2));
}
View footerView = ((LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.footer, null, false);
list.addFooterView(footerView);
}
}
但它返回java.lang.NullPointerException
!
可能出现的问题:
inflater的错误!
上下文错误!
谢谢!
答案 0 :(得分:1)
答案 1 :(得分:0)
最简单的解决方案是定义一个线性布局,首先有两个项目是列表视图,第二个是页脚。
如果您仍然坚持使用页脚方法使用页脚,则可以从活动代码中执行此操作:
//after code to set adapter to populate list
View footerView = ((LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.footer_layout, null, false);
list.addFooterView(footerView);