我有一个包含不同xml布局的列表视图，每个布局都有不同的视图。我想知道如何从onItemClick方法中的用户点击的项目中的视图中获取数据。
我的listview由多个布局组成，因此我无法确定在调用onItemClick方法时正在按哪个布局。例如，listview中布局中的一个项目是：
// list_item.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="@+id/lblSub"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:padding="6dp"
android:layout_marginRight="4dp"
android:text=""
android:textColor="#FFFFFF"
android:textSize="18sp" />
<TextView
android:id="@+id/lblMain"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:padding="6dp"
android:layout_marginLeft="4dp"
android:text=""
android:textColor="#FFFFFF"
android:textSize="18sp" />
</RelativeLayout>
列表视图中的另一个布局可能是：
// list_item_name.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="@+id/lblName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="4dp"
android:padding="4dp"
android:text="TextView"
android:textColor="#FFFFFF"
android:textSize="28sp" />
</RelativeLayout>
所以我对如何为列表视图中的任何布局获取所有这些视图的数据感到茫然。
我以前的尝试是这样的：
public void onItemClick(AdapterView<?> listView, View view, int position, long id) {
Object obj = adapter.getItem(position);
String value = obj.toString();
}
但是，在此实例中，value返回一个字符串，其中包含此项目内所有视图的所有值，例如：{caption=MobileNumber, value=07000123456}＆lt;＆lt;＆lt;我不能对这个字符串做任何事情，除非我尝试使用substring将其分开，考虑到用户可能已经创建了这些值，这种情况最不可靠。
这是我正在使用的适配器（归功于Jeff Sharkey，我没有创建此适配器）：
public class SeparatedListAdapter extends BaseAdapter {
public final Map<String,Adapter> sections = new LinkedHashMap<String,Adapter>();
public final ArrayAdapter<String> headers;
public final static int TYPE_SECTION_HEADER = 0;
public SeparatedListAdapter(Context context) {
headers = new ArrayAdapter<String>(context, R.layout.list_header);
}
public void addSection(String section, Adapter adapter) {
this.headers.add(section);
this.sections.put(section, adapter);
}
public void addSectionNoHeader(String section, Adapter adapter) {
this.sections.put(section, adapter);
}
public Object getItem(int position) {
for(Object section : this.sections.keySet()) {
Adapter adapter = sections.get(section);
int size = adapter.getCount() + 1;
// check if position inside this section
if(position == 0) return section;
if(position < size) return adapter.getItem(position - 1);
// otherwise jump into next section
position -= size;
}
return null;
}
public int getCount() {
// total together all sections, plus one for each section header
int total = 0;
for(Adapter adapter : this.sections.values())
total += adapter.getCount() + 1;
return total;
}
public int getViewTypeCount() {
// assume that headers count as one, then total all sections
int total = 1;
for(Adapter adapter : this.sections.values())
total += adapter.getViewTypeCount();
return total;
}
public int getItemViewType(int position) {
int type = 1;
for(Object section : this.sections.keySet()) {
Adapter adapter = sections.get(section);
int size = adapter.getCount() + 1;
// check if position inside this section
if(position == 0) return TYPE_SECTION_HEADER;
if(position < size) return type + adapter.getItemViewType(position - 1);
// otherwise jump into next section
position -= size;
type += adapter.getViewTypeCount();
}
return -1;
}
public boolean areAllItemsSelectable() {
return false;
}
public boolean isEnabled(int position) {
return (getItemViewType(position) != TYPE_SECTION_HEADER);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
int sectionnum = 0;
for(Object section : this.sections.keySet()) {
Adapter adapter = sections.get(section);
int size = adapter.getCount() + 1;
// check if position inside this section
if(position == 0) return headers.getView(sectionnum, convertView, parent);
if(position < size) return adapter.getView(position - 1, convertView, parent);
// otherwise jump into next section
position -= size;
sectionnum++;
}
return null;
}
@Override
public long getItemId(int position) {
return position;
}
}
我正在寻找一种方法来提取项目中所有视图的值。但是，点击的项目可能是任何布局之一，这让我感到困惑。有什么想法吗？
编辑：
以下是我在代码中使用此适配器的示例：
SeparatedListAdapter adapter;
Customer cust;
ListView lvDetails;
public Map<String,?> createDoubleItem(String title, String caption) {
Map<String,String> item = new HashMap<String,String>();
item.put(ITEM_VALUE, title);
item.put(ITEM_CAPTION, caption);
return item;
}
public Map<String,?> createSingleItem(String name) {
Map<String,String> item = new HashMap<String,String>();
item.put(ITEM_VALUE, name);
return item;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_customer);
Intent intent = getIntent();
cust = Db.Functions.getCustomer(intent.getStringExtra("uuid"));
lvDetails = (ListView) findViewById(R.id.custdetails);
adapter = new SeparatedListAdapter(this);
lvDetails.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> listView, View view, int position, long id) {
Gen.popup("Item clicked");
}
});
// Name
List<Map<String,?>> name = new LinkedList<Map<String,?>>();
if (cust.firstName == null && cust.lastName == null)
name.add(createSingleItem("Unnamed Customer"));
else
name.add(createSingleItem(
((cust.title != null) ? cust.title + " " : "") +
((cust.firstName != null) ? cust.firstName + " " : "") +
((cust.lastName != null) ? cust.lastName : "")));
adapter.addSection("Name", new SimpleAdapter(this, name, R.layout.list_item_name,
new String[] { ITEM_VALUE },
new int[] { R.id.lblName }));
// Phones
if ((cust.mobileNumber != null || cust.homeNumber != null || cust.workNumber != null) && SHOW_PHONES)
{
List<Map<String,?>> phone = new LinkedList<Map<String,?>>();
if (cust.mobileNumber != null)
phone.add(createDoubleItem(cust.mobileNumber, "Mobile"));
if (cust.homeNumber != null)
phone.add(createDoubleItem(cust.homeNumber, "Home"));
if (cust.workNumber != null)
phone.add(createDoubleItem(cust.workNumber, "Work"));
adapter.addSection("Phone", new SimpleAdapter(this, phone, R.layout.list_item,
new String[] { ITEM_VALUE, ITEM_CAPTION },
new int[] { R.id.lblSub, R.id.lblMain }));
}
lvDetails.setAdapter(adapter);
adapter.notifyDataSetChanged();
}
}
答案 0 :(得分：2)
首先关闭你为该适配器提供的链接看起来很旧（2008年，5年前）我会看一下第三方库，如this
但除此之外。
适配器的设计非常复杂，因为其中有多个适配器，因此如果不启动我自己的测试项目，我无法确定它是如何工作的。
现在当您调用onItemClick时，您想要添加以下内容
int viewType = adapter.getItemViewType(position);
if (viewType == SeparatedListAdapter.TYPE_SECTION_HEADER) {
//header clicked handle that here maybe do nothing
} else {
Map<String,?> clickedItem = (Map<String,?>) adapter.getItem(position);
String value = (String) clickedItem.Get(ITEM_VALUE);
String caption = (String) clickedItem.Get(ITEM_CAPTION);
//here you can do things with the clicked item
//also because you know the view type you can find other views on it
}
编辑：根据您提供的内容调整onclick的外观