我已经通过子活动创建了一个expandablelistview，现在我想为孩子实现带有搜索过滤器的searchView，但是我不知道该怎么做。我已经在互联网上搜索了解决方案，但我尝试过的方法却无效。
我希望能够在孩子之后搜索过滤器，例如“超级”，当我单击“超级”时，它将打开活动。
有人可以帮我吗？
这里是我的代码：
MainActivity：
public class MainActivity extends AppCompatActivity {
ExpandableListView expandableListView;
List<String> langs;
Map<String, List<String>> topics;
ExpandableListAdapter listAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
expandableListView = (ExpandableListView) findViewById(R.id.expandableListView);
fillData();
listAdapter = new MyExListAdapter(this,langs,topics);
expandableListView.setAdapter(listAdapter);
expandableListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {
switch (groupPosition)
{
case 0: // Dette er groupPosition (altså Java)
switch (childPosition)
{
case 0: // Dette er childPosition
Super();
break;
case 1:
//do something
break;
}
switch (childPosition)
{
case 1:
Encapsulation();
break;
case 2:
//do something
break;
}
switch (childPosition)
{
case 2:
Methods();
break;
case 3:
//do something
break;
}
break; //Husk break her for at undgå du åbner for begge parents første child
case 1: // Dette er groupPosition (altså C)
switch (childPosition)
{
case 0:
Procedure();
break;
case 1:
//do something
break;
}
switch (childPosition)
{
case 1:
Pointer();
break;
case 2:
//do something
break;
}
switch (childPosition)
{
case 2:
Array();
break;
case 3:
//do something
break;
}
break;
}
return false;
}
// Hovedgruppe Java
private void Super() {
Intent MyIntent = new Intent(MainActivity.this, Super.class);
MyIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); // Bruges for at undgå den åbner to af samme activities (flag activity clear top)
startActivity(MyIntent);
}
private void Encapsulation() {
Intent MyIntent = new Intent(MainActivity.this, Encapsulation.class);
MyIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); // Bruges for at undgå den åbner to af samme activities (flag activity clear top)
startActivity(MyIntent);
}
private void Methods() {
Intent MyIntent = new Intent(MainActivity.this, Methods.class);
MyIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(MyIntent);
}
// Hovedgruppe C
private void Procedure() {
Intent MyIntent = new Intent(MainActivity.this, Procedure.class);
MyIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); // Bruges for at undgå den åbner to af samme activities (flag activity clear top)
startActivity(MyIntent);
}
private void Pointer() {
Intent MyIntent = new Intent(MainActivity.this, Pointer.class);
MyIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); // Bruges for at undgå den åbner to af samme activities (flag activity clear top)
startActivity(MyIntent);
}
private void Array() {
Intent MyIntent = new Intent(MainActivity.this, Array.class);
MyIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(MyIntent);
}
});
}
public void fillData()
{
langs = new ArrayList<>();
topics = new HashMap<>();
langs.add("Java");
langs.add("C");
List<String> java = new ArrayList<>();
List<String> C = new ArrayList<>();
// Hovedgruppe java
java.add("Super");
java.add("Encapsulation");
java.add("Methods");
// Hovedgruppe C
C.add("Procedure");
C.add("Pointers");
C.add("Array");
C.add("Array");
C.add("Array");
C.add("Array");
C.add("Array");
topics.put(langs.get(0),java);
topics.put(langs.get(1),C);
}
}
MyExListAdapter：
public class MyExListAdapter extends BaseExpandableListAdapter
{
Context context;
List<String> langs;
Map<String, List<String>> topics;
public MyExListAdapter(Context context, List<String> langs, Map<String, List<String>> topics) {
this.context = context;
this.langs = langs;
this.topics = topics;
}
@Override
public int getGroupCount() {
return langs.size();
}
@Override
public int getChildrenCount(int groupPosition) {
return topics.get(langs.get(groupPosition)).size();
}
@Override
public Object getGroup(int groupPosition) {
return langs.get(groupPosition);
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return topics.get(langs.get(groupPosition)).get(childPosition);
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
String lang = (String) getGroup(groupPosition);
if(convertView == null)
{
LayoutInflater inflater = (LayoutInflater) context.getSystemService(context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.list_parent,null);
}
TextView txtParent = (TextView) convertView.findViewById(R.id.txtParent);
txtParent.setText(lang);
return convertView;
}
@Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
String topic = (String) getChild(groupPosition,childPosition);
if(convertView == null)
{
LayoutInflater inflater = (LayoutInflater) context.getSystemService(context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.list_child,null);
}
TextView txtChild = (TextView) convertView.findViewById(R.id.txtChild);
txtChild.setText(topic);
return convertView;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
activity_main.xml：
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:context=".MainActivity">
<ExpandableListView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:id="@+id/expandableListView"
android:groupIndicator="@null"
android:cacheColorHint="#00000000"
android:listSelector="@android:color/transparent"
/>
</RelativeLayout>