我正在使用ListView
开发一个用于创建学生标记列表的应用程序。
在此申请表中,该名单有10名学生。为这些学生提供了四个等级的考试。一个学生只能从这四个中调整一个等级。
教师会在ListView
中为学生分配成绩。
我的xml文件 Studentlist.xml 如下:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
和我的 row.xml 文件如下:
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="500dp"
android:layout_height="fill_parent"
android:padding="10dp" >
<TableRow>
<TextView
android:id="@+id/SNo"
style="@style/text"
android:layout_width="40dp"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/StudNo"
style="@style/text"
android:layout_width="80dp"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/StudName"
style="@style/text"
android:layout_width="180dp"
android:layout_height="wrap_content" />
<RadioGroup
android:id="@+id/radioGroup1"
android:layout_width="160dp"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<RadioButton
android:id="@+id/radio0"
android:layout_width="40dp"
android:layout_height="wrap_content"
android:checked="true" />
<RadioButton
android:id="@+id/radio1"
android:layout_width="40dp"
android:layout_height="wrap_content" />
<RadioButton
android:id="@+id/radio2"
android:layout_width="40dp"
android:layout_height="wrap_content" />
<RadioButton
android:id="@+id/radio3"
android:layout_width="40dp"
android:layout_height="wrap_content" />
</RadioGroup>
</TableRow>
现在我正在以下列形式尝试输出:
1 0001 AAAA <RadioButton1> <RadioButton2> <RadioButton3> <RadioButton4>
2 0002 BBBB <RadioButton1> <RadioButton2> <RadioButton3> <RadioButton4>
如何使用适配器功能?
ArrayAdapter<String,String,String,RadiGroup> studList=new ArrayAdapter<String,String,String,RadiGroup>();
我可以像这样使用,以及如何为ListView
?
建议我寻求最佳解决方案!
答案 0 :(得分:1)
您可以使用从ArrayAdapter继承的类,并重写其getView()方法。
public class StudentAdapter extends ArrayAdapter<Student> {
protected LayoutInflater inflater;
public StudentAdapter(final Context context) {
super(context, 0);
inflater = (LayoutInflater) ((Context) context)
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public View getView(int position, View convertView, ViewGroup parent) {
// Note: You should optimize here with re-using convertView
View rowView = inflater.inflate(R.layout.user_address_row_layout,
parent, false);
TextView sNo = (TextView) rowView.findViewById(R.id.sNo);
sNo.setText(getItem(position).number);
// same for every field of the row
// ...
return rowView;
}
}
答案 1 :(得分:1)
这是listview的自定义适配器的示例。根据需要修改它: XML布局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="@+id/main"
android:orientation="vertical"
android:layout_height="fill_parent"
android:layout_width="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Header -->
<LinearLayout
android:id="@+id/header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/black" >
<TextView
android:id="@+id/item2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:height="30dip"
android:text="Latest News - Your Healing Place"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#FFFFFF"
android:width="100dip" />
<TextView
android:id="@+id/item1"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:height="30dip"
android:width="20dip" />
</LinearLayout>
<View android:layout_width="fill_parent"
android:layout_height="1dip"
android:background="?android:attr/listDivider" />
<LinearLayout android:id="@+id/layout"
android:layout_width="wrap_content"
android:layout_height="fill_parent">
<ListView
android:id="@+id/listview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@color/black" >
</ListView>
</LinearLayout>
</LinearLayout>
news.java:
List<HashMap<String, String>> fillMaps = new ArrayList<HashMap<String, String>>();
String[] from = new String[] {"details", "date"};
int[] to = new int[] { R.id.item1, R.id.item2};
ListView lv= (ListView)findViewById(R.id.listview);
HashMap<String, String> map = new HashMap<String, String>();
map.put("details", "This is a sample message");
map.put("date", "24-07-2003");
fillMaps.add(map);
SimpleAdapter adapter = new SimpleAdapter(this, fillMaps, R.layout.grid_item, from, to);
lv.setAdapter(adapter);