所以我有一个可扩展的列表视图。我想要的是让每个孩子都可以点击。如果我按第一个我要打开class1,如果我按第二个我要打开class2,如果我按第三个我要打开class3等等...我是编程的新手所以请解释我,就像你为dummie做的那样。
这是我的活动
public class Mecanica extends ExpandableListActivity implements OnChildClickListener {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ExpandableListView expandbleLis = getExpandableListView();
expandbleLis.setDividerHeight(2);
expandbleLis.setGroupIndicator(null);
expandbleLis.setClickable(true);
setGroupData();
setChildGroupData();
NewAdapter mNewAdapter = new NewAdapter(groupItem, childItem);
mNewAdapter.setInflater((LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE), this);
getExpandableListView().setAdapter(mNewAdapter);
expandbleLis.setOnChildClickListener(this);
}
public void setGroupData() {
groupItem.add("Directia");
groupItem.add("Franarea");
groupItem.add("Motorul");
groupItem.add("Rotile");
groupItem.add("Siguranta si control");
groupItem.add("Suspensia");
groupItem.add("Transmisia");
}
ArrayList<String> groupItem = new ArrayList<String>();
ArrayList<Object> childItem = new ArrayList<Object>();
public void setChildGroupData() {
/**
* Add Data For TecthNology
*/
ArrayList<String> child = new ArrayList<String>();
child.add("Java");
child.add("Drupal");
child.add(".Net Framework");
child.add("PHP");
childItem.add(child);
/**
* Add Data For Mobile
*/
child = new ArrayList<String>();
child.add("Android");
child.add("Window Mobile");
child.add("iPHone");
child.add("Blackberry");
childItem.add(child);
/**
* Add Data For Manufacture
*/
child = new ArrayList<String>();
child.add("HTC");
child.add("Apple");
child.add("Samsung");
child.add("Nokia");
childItem.add(child);
/**
* Add Data For Extras
*/
child = new ArrayList<String>();
child.add("Contact Us");
child.add("About Us");
child.add("Location");
child.add("Root Cause");
childItem.add(child);
}
}
适配器类
@SuppressWarnings("unchecked")
public class NewAdapter extends BaseExpandableListAdapter {
public ArrayList<String> groupItem, tempChild;
public ArrayList<Object> Childtem = new ArrayList<Object>();
public LayoutInflater minflater;
public Activity activity;
public NewAdapter(ArrayList<String> grList, ArrayList<Object> childItem) {
groupItem = grList;
this.Childtem = childItem;
}
public void setInflater(LayoutInflater mInflater, Activity act) {
this.minflater = mInflater;
activity = act;
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return null;
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return 0;
}
@Override
public View getChildView(int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
tempChild = (ArrayList<String>) Childtem.get(groupPosition);
TextView text = null;
if (convertView == null) {
convertView = minflater.inflate(R.layout.childrow, null);
}
text = (TextView) convertView.findViewById(R.id.textView1);
text.setText(tempChild.get(childPosition));
/*convertView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(activity, tempChild.get(childPosition),
Toast.LENGTH_SHORT).show();
}
});*/
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
return ((ArrayList<String>) Childtem.get(groupPosition)).size();
}
@Override
public Object getGroup(int groupPosition) {
return null;
}
@Override
public int getGroupCount() {
return groupItem.size();
}
@Override
public void onGroupCollapsed(int groupPosition) {
super.onGroupCollapsed(groupPosition);
}
@Override
public void onGroupExpanded(int groupPosition) {
super.onGroupExpanded(groupPosition);
}
@Override
public long getGroupId(int groupPosition) {
return 0;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = minflater.inflate(R.layout.grouprow, null);
}
((CheckedTextView) convertView).setText(groupItem.get(groupPosition));
//((CheckedTextView) convertView).setChecked(isExpanded);
return convertView;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
答案 0 :(得分:1)
我找不到您应该实施的OnChildClickListener
。
这样,您就可以访问所点击的特定子项,从而访问List
项目中的位置。
实现看起来像这个例子:
@Override
public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {
// Create a switch that switches on the specific child position.
switch(childPosition) {
case 0:
// Go to child #0 specific class.
Intent child0Intent = new Intent(this, Child0Activity.class);
startActivity(child0Intent);
break;
case 1:
// Go to child #1 specific class.
Intent child1Intent = new Intent(this, Child1Activity.class);
startActivity(child1Intent);
break;
}
return false;
}
可以在此处找到如何实现它的完整示例:
http://www.mysamplecode.com/2012/10/android-expandablelistview-example.html