expandablelistview的group元素上的多次单击事件 [英] Multiple click events on expandablelistview's group element
问题描述
我有两个关于groupView(不是子视图)上的expandablelistview点击事件的问题
I have two question about expandablelistview click events on groupView's (not child)
-
当我在GroupView中有孩子时，我可以使用以下代码段获取groupPosition
When i have child in my GroupView, i'm able to get the groupPosition using below snippet
expandableListView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener(){
expandableListView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
@Override
public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {
Log.d("Clicked on item: ", ""+groupPosition);
return false;
}
});
但是当我没有孩子时，不幸的是，鼠标单击时'MyApp'已停止.在这种情况下，如何获取groupPosition?
but when i don't have any child, Unfortunately 'MyApp' has stopped on mouse click. In this case, How to get the groupPosition?
-
在我的expandablelistview的groupView布局中，我有两个按钮.现在，我需要为两个按钮注册两个不同的单击事件.这个groupView也没有孩子.我进行了彻底的搜索，但是对此一无所知.
I have two buttons in my expandablelistview's groupView layout. now i need to register two different click events for both the buttons. This groupView also didn't has child. I searched in SO thoroughly, but i got no clue on this.
<LinearLayout
android:layout_below="@id/qtd_prc_cont"
android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center">
<Textview
android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/group_text" android:text="Group 1" />
<Button
android:id="@+id/btn_reject"
android:layout_width="90dp" android:layout_height="30dp" android:text="Reject" android:textAllCaps="false" android:background="@drawable/reject_button_styles"
android:layout_marginRight="60dp" android:textColor="#a1a2a1" android:textSize="13dp"/>
<Button
android:id="@+id/btn_accept"
android:layout_width="90dp" android:layout_height="30dp" android:text="Accept" android:textAllCaps="false" android:background="@drawable/button_radius"
android:textColor="@color/colorWhite" android:textSize="13dp"/>
</LinearLayout>
这是我的适配器类:
public class OfferedTrucksAdapter extends BaseExpandableListAdapter {
private Context context;
private ArrayList<QuotedListGroup> groups;
public OfferedTrucksAdapter(Context context, ArrayList<QuotedListGroup> groups) {
this.context = context;
this.groups = groups;
}
@Override
public Object getChild(int groupPosition, int childPosition) {
ArrayList<QuotedListItem> chList = groups.get(groupPosition).getItems();
return chList.get(childPosition);
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
QuotedListItem child = (QuotedListItem) getChild(groupPosition, childPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) context
.getSystemService(context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.activity_quoted_list_item, null);
}
TextView container_label = (TextView) convertView.findViewById(R.id.container);
container_label.setText(child.getContainer());
TextView truck_number = (TextView) convertView.findViewById(R.id.truck_number);
truck_number.setText(child.getTruckNumber().toString());
TextView truck_weight = (TextView) convertView.findViewById(R.id.truck_weight);
truck_weight.setText(child.getTruckWeight().toString());
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
ArrayList<QuotedListItem> chList = groups.get(groupPosition).getItems();
return chList.size();
}
@Override
public Object getGroup(int groupPosition) {
return groups.get(groupPosition);
}
@Override
public int getGroupCount() {
return groups.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
QuotedListGroup group = (QuotedListGroup) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater inf = (LayoutInflater) context
.getSystemService(context.LAYOUT_INFLATER_SERVICE);
convertView = inf.inflate(R.layout.activity_offered_trucks_group, null);
}
if(groupPosition%2 == 0) {
convertView.findViewById(R.id.offered_trucks_group).setVisibility(View.VISIBLE);
convertView.findViewById(R.id.offered_price_group).setVisibility(View.GONE);
TextView destination = (TextView) convertView.findViewById(R.id.offered_destination);
destination.setText(group.getDestination());
TextView trucks = (TextView) convertView.findViewById(R.id.offered_trucks);
trucks.setText(group.getTrucks() + "");
TextView date_label = (TextView) convertView.findViewById(R.id.offered_date_label);
date_label.setText(group.getDateLabel().toString());
TextView material = (TextView) convertView.findViewById(R.id.offered_material);
material.setText(group.getMaterial().toString());
TruckaroIconView see_hide_icon = (TruckaroIconView) convertView.findViewById(R.id.offered_see_hide_icon);
TextView see_hide_label = (TextView) convertView.findViewById(R.id.offered_see_hide_label);
if(isExpanded) {
see_hide_label.setText("Hide Trucks");
see_hide_icon.setRotation(180);
} else {
see_hide_label.setText("See Trucks");
see_hide_icon.setRotation(0);
}
} else {
convertView.findViewById(R.id.offered_trucks_group).setVisibility(View.GONE);
convertView.findViewById(R.id.offered_price_group).setVisibility(View.VISIBLE);
TextView offeredPrice = (TextView) convertView.findViewById(R.id.offered_price);
offeredPrice.setText(group.getOfferedPrice());
TextView quotedPrice = (TextView) convertView.findViewById(R.id.quoted_price);
quotedPrice.setText(group.getQuotedPrice());
}
return convertView;
}
protected static class RowViewHolder {
public Button buttonReject, buttonAccept;
}
@Override
public boolean hasStableIds() {
return true;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
基于接受/拒绝按钮的点击，我需要通过意图将Textview的数据传递到下一个活动.
Based on accept/reject button clicks, i need to pass the Textview's data to next activity through intent.
这是我的可扩展列表视图的样子:
Here is how my expandable listview looks like:
在上图中，有四个列表项.第一和第三有孩子，但是第二和第四没有孩子.当我单击第二元素接受按钮时，我需要将第一元素数据传递到下一个活动.我无法在这些按钮上设置点击事件.
In the above image, there are four list items. 1st and 3rd have children but 2nd and 4th has no child. When i click on 2nd element accept button, i need to pass the 1st elemnt data to next activity. I'm unable to set click events on those buttons.
请帮助我.
谢谢.
推荐答案
好的.如果我正确理解了您的担忧，那么您的目标行为是传递上部项目的元素(在屏幕截图中，如果单击了 Accept 按钮，将从上部项目中检索一个值并通过intent传递给另一个活动.
Okay. If I understand your concern correctly, the behavior you're aiming for is to pass an element of the upper item (in your screenshot, if Accept button is clicked, a value from the upper item will be retrieved and passed to another activity through an intent.
这就是我得到的:
@Override
public View getGroupView(final int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
QuotedListGroup group = (QuotedListGroup) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater inf = (LayoutInflater) context
.getSystemService(context.LAYOUT_INFLATER_SERVICE);
convertView = inf.inflate(R.layout.activity_offered_trucks_group, null);
}
if (groupPosition % 2 == 0) {
// Removed some code here.
} else {
convertView.findViewById(R.id.offered_trucks_group).setVisibility(View.GONE);
convertView.findViewById(R.id.offered_price_group).setVisibility(View.VISIBLE);
TextView offeredPrice = (TextView) convertView.findViewById(R.id.offered_price);
offeredPrice.setText(group.getOfferedPrice());
TextView quotedPrice = (TextView) convertView.findViewById(R.id.quoted_price);
quotedPrice.setText(group.getQuotedPrice());
// Added code here ----
// Initialize the buttons.
Button btnAccept = (Button) convertView.findViewById( < insert_btn_id_here >);
Button btnReject = (Button) convertView.findViewById( < insert_btn_id_here >);
// Set onClickListeners for the buttons.
btnAccept.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
/*
Modify with the object you have, then pass the group position - 1
(double check this, you just need to pass the position of the upper item).
*/
Object groupObject = getGroup(groupPosition - 1);
/*
Get the value from the groupObject that you want to include in the intent.
NOTE: I'm just using some sample codes, modify it to what you need.
*/
String sampleStr = groupObject.destination.getText().toString();
/*
Intent stuff, I think you know this already.
*/
Intent intent = new Intent(context, SampleActivity.class);
intent.putExtra("SAMPLE_KEY", sampleStr);
context.startActivity(intent);
}
});
btnReject.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// your code for reject button here.
}
});
// Until here ----
}
return convertView;
}
我只是在else语句中添加了按钮的侦听器(接受，拒绝).您需要将其修改为所需的内容，因为我的其余代码没有可见性.如果您有任何问题，请告诉我.干杯! :D
I simply added the listeners for your buttons (accept, reject) inside the else statement. You need to modify it to what you need since I don't have visibility with the rest of your code. Let me know if you have questions. Cheers! :D
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