I am trying to make a specific (selected by user) row of a ListView checkbox to become visible. But the problem is,I have dynamically added 10 rows in my list view using class that extends ArrayAdapter and when I select the 1st row then along with my 1st row , 3rd , 5th and so on check box is becoming visible. Similar with 2nd, 4th and so on row.
I just want that particular row (eg position 0) that I selected to show up the check box and rest shoulb be invisible.
public class LazyAdapter extends ArrayAdapter<RowItem> {
Context context;
public LazyAdapter(Context context, int resourceId, List<RowItem> items){
super(context, resourceId, items);
this.context = context;
}
public class ViewHolder{
CheckedTextView checkbox;
TextView title;
TextView description;
LinearLayout card;
}
public View getView(int position, View convertView, ViewGroup parent){
ViewHolder holder;
RowItem rowItem = getItem(position);
LayoutInflater mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null){
convertView = mInflater.inflate(R.layout.list_row, null);
holder = new ViewHolder();
holder.card = (LinearLayout) convertView.findViewById(R.id.card);
holder.checkbox = (CheckedTextView)convertView.findViewById(R.id.deliverychecktext);
holder.title = (TextView)convertView.findViewById(R.id.title);
holder.description = (TextView)convertView.findViewById(R.id.description);
convertView.setTag(holder);
} else
holder = (ViewHolder)convertView.getTag();
//holder.image.setImageResource(rowItem.getImageId());
holder.title.setText(rowItem.getTitle());
holder.description.setText(rowItem.getDesc());
Animation animation = AnimationUtils.loadAnimation(context, R.anim.card_animation);
holder.card.startAnimation(animation);
return convertView;
}
}
MainActivity class
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Intialize and set the Action Bar to Holo Blue
ActionBar actionBar = getActionBar();
actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#33b5e5" )));
ListView lv = (ListView) findViewById(R.id.myList);
rowItems = new ArrayList<RowItem>();
String[] titles = {"Address1","Address2","Address3","Address4","Address5","Address6","Address7","Address8"};
String[] descriptions = {"First Address","Second Address","Third Address","Fourth Address","Fifth Address",
"Sixth Address","Seventh Address","Eighth Address"};
//Populate the List
for (int i = 0; i < titles.length; i++) {
RowItem item = new RowItem("Delivery Address :", descriptions[i]);
rowItems.add(item);
}
// Set the adapter on the ListView
LazyAdapter adapter = new LazyAdapter(getApplicationContext(), R.layout.list_row, rowItems);
lv.setAdapter(adapter);
lv.setOnItemClickListener(new OnItemClickListener(){
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// TODO Auto-generated method stub
CheckedTextView check = (CheckedTextView) view.findViewById(R.id.deliverychecktext);
if (check.getVisibility() == 4)
check.setVisibility(1);
else
check.setVisibility(4);
Toast.makeText(getApplicationContext(), "h u clicked : "+position,
Toast.LENGTH_LONG).show();
}
});
list_row.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:background="#drawable/card_no_border"
android:orientation="vertical"
android:padding="2dp"
android:id="#+id/card">
<CheckedTextView
android:id="#+id/deliverychecktext"
android:layout_width="fill_parent"
android:paddingLeft="2dp"
android:paddingRight="2dp"
android:paddingTop="2dp"
android:layout_height="wrap_content"
android:checkMark="#drawable/ic_launcher"
android:visibility="invisible"
/>
<TextView
android:id="#+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="4dp"
android:text="Dog Tag"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#040404"
android:textStyle="bold"
android:typeface="sans" />
</LinearLayout>
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#e5e5e5">
<TextView android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Your Saved Address"
android:textSize="20sp"
android:padding="5dp"/>
<ListView
android:id="#+id/myList"
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_weight="1"
android:divider="#android:color/transparent"
android:dividerHeight="10dp"
android:paddingLeft="10dip"
android:paddingRight="10dip"
android:paddingTop="1dip"/>
</LinearLayout>
First one RowItem as class varible to store the selected items.
private RowItem mSelectedItem = null;
ex
public class LazyAdapter extends ArrayAdapter<RowItem> {
Context context;
private RowItem mSelectedItem = null;
After that add the below listener to your LazyAdapter adapter class.
/**
* On Click Listener for the view.
*/
protected class OnViewClickListener implements
android.view.View.OnClickListener {
private RowItem mItem;
public OnViewClickListener(RowItem item) {
mItem = item;
}
#Override
public void onClick(View v) {
mSelectedItem = mItem;
notifyDataSetChanged();
}
}
call this listener from your getView method in LazyAdapter before return view and add logic for the show and hid the view.
ex :
if(mSelectedItem != null && mSelectedItem == rowItem) {
holder.checkbox.setVisibility(View.VISIBLE);
} else {
holder.checkbox.setVisibility(View.INVISIBLE);
}
convertView.setOnClickListener(new OnViewClickListener(rowItem));
return convertView;
}
And remove click lister in ur activity.
on your activity its working because while rendering the adapter view it will reuse the object, so it was happening like that. Now we are checking and updating every time while view rendering.
Related
I am using Custom Adapter for ListView. Each ListView item contains ImageButton which will delete that Item. Now, I want to refresh full ListView when anyone click on ImageButton. How to do this ?
Or is there anyway to check ImageButton click on ListView onItemClickListener ? I have already tried notifyDataSetChanged in Custom Adapter but I can't find any changes.
Custom Item xml :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#color/lightish"
android:orientation="vertical"
android:padding="10dp" >
<ImageButton
android:id="#+id/imgDelete"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end"
android:layout_marginBottom="-20dp"
android:background="#android:color/transparent"
android:contentDescription="#string/app_name"
android:src="#drawable/ic_delete" />
<TextView
android:id="#+id/tvName"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#color/black"
android:textSize="20sp" />
</LinearLayout>
Custom Adapter java :
public class MyAddressesAdapter extends BaseAdapter {
private Activity activity;
private ArrayList<HashMap<String, String>> data;
private static LayoutInflater inflater = null;
View vi;
HashMap<String, String> address;
public MyAddressesAdapter(Activity a,
ArrayList<HashMap<String, String>> arlData) {
activity = a;
data = arlData;
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public int getCount() {
return data.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, final View convertView, ViewGroup parent) {
vi = convertView;
if (convertView == null)
vi = inflater.inflate(R.layout.my_address_view, parent, false);
final TextView tvName = (TextView) vi.findViewById(R.id.tvName);
address = new HashMap<String, String>();
address = data.get(position);
tvName.setText(address.get("PersonName"));
return vi;
}
In main activity java :
myAddressesAdapter = new MyAddressesAdapter(
getActivity(), addressList);
lvMyAddresses.setAdapter(myAddressesAdapter);
put code in getview method in adapter
imageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//your code here
data.remove(position);
notifyDataSetChanged();
}
});
Well I do not know what should be the proper title for the question , but my problem is quite amazing, do not know is it possible or not. Here is my question
I have series of images and I want to set them in a ListView. following is a ListView row Xml.(named anim_list_row)
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="100"
>
<ImageView
android:layout_width="0dp"
android:layout_height="350dp"
android:scaleType="fitXY"
android:id="#+id/iv_dummy_left"
android:layout_marginLeft="5dp"
android:layout_weight="50"/>
<ImageView
android:layout_width="0dp"
android:layout_height="350dp"
android:scaleType="fitXY"
android:id="#+id/iv_dummy_right"
android:layout_weight="50"
android:layout_marginRight="5dp"/>
</LinearLayout>
in this you can see that I want to set the 2 different images in two different let say left and right ImageView. Following is my adapter class
public class MListAdapter extends BaseAdapter {
private Context context;
private ArrayList<AnimListItems> mAnimListItems;
public MListAdapter(Context context, ArrayList<AnimListItems> mAnimListItems){
this.context = context;
this.mAnimListItems = mAnimListItems;
}
#Override
public int getCount() {
return mAnimListItems.size();
}
#Override
public Object getItem(int position) {
return navDrawerItems.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater mInflater = (LayoutInflater)
context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
convertView = mInflater.inflate(R.layout.anim_list_row, null);
}
ImageView imgIconLeft = (ImageView) convertView.findViewById(R.id.iv_dummy_left);
ImageView imgIconRight = (ImageView) convertView.findViewById(R.id.iv_dummy_right);
//TextView txtTitle = (TextView) convertView.findViewById(R.id.title);
imgIconLeft.setImageResource(navDrawerItems.get(position).getIcon());
//if I do not do +1 here it sets same image to both left and right ImageView
imgIconRight.setImageResource(navDrawerItems.get(position+1).getIcon());
// txtTitle.setText(navDrawerItems.get(position).getTitle());
return convertView;
}
}
so here is problem this list view is working but it is assigning the same images to both ImageView in the row. and if I do +1 as following
imgIconRight.setImageResource(navDrawerItems.get(position+1).getIcon())
then it helps in changing the image view at right side in the row, but the 2nd row repeat the image in its first imageview (I mean the image in the left ImageView of the 2nd row is same as the image in right ImageView of first row.)
So what is a solution of
Repeating images in a rows.
And How can I get each ImageView id and its resourceid of the image so that I can come to know which image has been clicked. And then I can able to set that image into another activity's ImageView. I mean I wanted to know which image has been clicked by the user , so I want to set same image in the ImageView of other activity.
Hello If you want to user one single array then i have made one demo example for your problem quickly i think it will help you.
MainActivity.java
public class MainActivity extends ActionBarActivity {
Item item;
ArrayList<Object> obj = new ArrayList<Object>();
MListAdapter adapter;
ListView lv;
int[] arrEnabledImageIds = new int[] { R.drawable.ic_launcher,
R.drawable.ic_delete_icon, R.drawable.ic_delete_icon,
R.drawable.ic_launcher, R.drawable.ic_delete_icon,
R.drawable.ic_launcher };
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lv = (ListView) findViewById(R.id.listView1);
for (int i = 0; i < arrEnabledImageIds.length; i++) {
Item itemInfo = new Item();
itemInfo.image1 = arrEnabledImageIds[i];
i++;
itemInfo.image2 = arrEnabledImageIds[i];
obj.add(itemInfo);
}
adapter = new MListAdapter(this, R.layout.row, obj);
lv.setAdapter(adapter);
}
}
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
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>
Item.java
public class Item implements Serializable {
public static final long serialVersionUID = 1L;
public int image1;
public int image2;
}
row.xml
<?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="horizontal" >
<ImageView
android:id="#+id/ivLeft"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
<ImageView
android:id="#+id/ivRight"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
</LinearLayout>
MListAdapter.java
public class MListAdapter extends ArrayAdapter<Object> {
private Context context;
int resId;
private ArrayList<Object> mAnimListItems;
public MListAdapter(Context context, int textViewResourceId,
ArrayList<Object> mAnimListItems) {
super(context, textViewResourceId, mAnimListItems);
this.resId = textViewResourceId;
this.context = context;
this.mAnimListItems = mAnimListItems;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater mInflater = (LayoutInflater) context
.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
convertView = mInflater.inflate(resId, null);
}
ImageView imgIconLeft = (ImageView) convertView
.findViewById(R.id.ivLeft);
ImageView imgIconRight = (ImageView) convertView
.findViewById(R.id.ivRight);
// TextView txtTitle = (TextView) convertView.findViewById(R.id.title);
Item item = (Item) mAnimListItems.get(position);
imgIconLeft.setImageResource(item.image1);
// if I do not do +1 here it sets same image to both left and right
// ImageView
imgIconRight.setImageResource(item.image2);
// txtTitle.setText(navDrawerItems.get(position).getTitle());
return convertView;
}
}
try to use two different array/arraylist to store left and rightside images seprately.
settag as l+position for left image
settag as r+position for right image
you can identify the clicked image by
imgIconLeft.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if(v.getTag.toString().contains("l"){
// then it's a left button.
String position=v.getTag.toString().subString(1,v.getTag.toString().length()-1);
// to get position
}
});
Hi guys, I tried to learn how to use custom ListView by this page
It works fine but I have problems with another options.
Cannot set margin to listItems
Cannot set backgro
Cannot set OnItemClickListener
1# Margin
First of all I'm trying to set margin between list items but nothing works. I try to set margin on RelativeLayout in rowlayout.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="75dp"
android:background="#drawable/rounded"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
>
2# Background
I want to set background on whole screen under listView. I think I put black color on every View in every xml I found but nothing affect the background. I can change background of single list items, that's all.
android:background="#000000"
3#OnItemClickListener
My last problem is that I'm not able to set onItemClickListener. I have no idea how to set it if I don't have simply ListView but RelativeLayout with TextView etc.
I guess I have to use
setOnClickListener(new OnClickListener()
and after that
public void onClick(View arg0) {
but I have no idea on which View I have to use this method.
Files
MyAdapter.java
public class MyAdapter extends ArrayAdapter<Model> {
private final Context context;
private final ArrayList<Model> modelsArrayList;
public MyAdapter(Context context, ArrayList<Model> modelsArrayList) {
super(context, R.layout.rowlayout, modelsArrayList);
this.context = context;
this.modelsArrayList = modelsArrayList;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// 1. Create inflater
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// 2. Get rowView from inflater
View rowView = null;
if(!modelsArrayList.get(position).isGroupHeader()){
rowView = inflater.inflate(R.layout.rowlayout, parent, false);
// 3. Get icon,title & counter views from the rowView
ImageView imgView = (ImageView) rowView.findViewById(R.id.item_icon);
TextView titleView = (TextView) rowView.findViewById(R.id.item_title);
TextView counterView = (TextView) rowView.findViewById(R.id.item_counter);
// 4. Set the text for textView
imgView.setImageResource(modelsArrayList.get(position).getIcon());
titleView.setText(modelsArrayList.get(position).getTitle());
counterView.setText(modelsArrayList.get(position).getCounter());
}
else{
//rowView = inflater.inflate(R.layout.group_header, parent, false);
// TextView titleView = (TextView) rowView.findViewById(R.id.header);
// titleView.setText(modelsArrayList.get(position).getTitle());
}
// 5. retrn rowView
return rowView;
}
}
Model.java
package com.example.sunny.katan;
/**
* Created by Sunny on 15.09.14.
*/
public class Model{
private int icon;
private String title;
private String counter;
private boolean isGroupHeader = false;
public Model(String title) {
this(-1,title,null);
isGroupHeader = true;
}
public Model(int icon, String title, String counter) {
super();
this.icon = icon;
this.title = title;
this.counter = counter;
}
public String getCounter() {
return counter;
}
public String getTitle() {
return title;
}
public int getIcon() {
return icon;
}
public boolean isGroupHeader() {
return false;
}
public void setGroupHeader(boolean isGroupHeader) {
this.isGroupHeader = isGroupHeader;
}
//gettters & setters...
}
main.java
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
// if extending Activity
//setContentView(R.layout.activity_main);
// 1. pass context and data to the custom adapter
MyAdapter adapter = new MyAdapter(this, generateData());
// if extending Activity 2. Get ListView from activity_main.xml
//ListView listView = (ListView) findViewById(R.id.listview);
// 3. setListAdapter
//listView.setAdapter(adapter); if extending Activity
setListAdapter(adapter);
}
private ArrayList<Model> generateData(){
ArrayList<Model> models = new ArrayList<Model>();
models.add(new Model(R.raw.barbell,"Cviky","37"));
models.add(new Model(R.raw.stretching,"Protahování","94"));
models.add(new Model(R.raw.work,"Generování workoutu","293"));
return models;
}
rowlayout.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="75dp"
android:background="#drawable/rounded"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
>
<!-- icon -->
<ImageView
android:id="#+id/item_icon"
android:layout_width="32dp"
android:layout_height="32dp"
android:layout_alignParentLeft="true"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_centerVertical="true"
android:src="#raw/barbell"
/>
<!-- title -->
<TextView
android:id="#+id/item_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:layout_toRightOf="#+id/item_icon"
android:layout_marginTop="30dp"
android:layout_alignBaseline="#+id/item_counter"
android:textSize="20dp"
/>
<!-- counter -->
<TextView
android:id="#+id/item_counter"
android:layout_width="32dp"
android:layout_height="32dp"
android:layout_alignParentRight="true"
android:layout_marginRight="8dp"
android:layout_centerVertical="true"
android:background="#drawable/rectangle"
android:gravity="center"
android:textColor="#FFFFFF"
android:textSize="12sp"
android:textStyle="bold" />
</RelativeLayout>
main.xml
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="false"
>
<LinearLayout
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:context=".katan_lobby"
android:orientation="vertical"
>
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/menu"
android:layout_gravity="center_horizontal"
android:background="#238CD4"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/prvniItemSeznamu"
android:background="#238CD4"
style="#style/listView"
/>
</LinearLayout>
</ScrollView>
Looks like you are half way there in your activity.
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
MyAdapter adapter = new MyAdapter(this, generateData());
ListView listView = (ListView) findViewById(R.id.menu);
listView.setAdapter(adapter); if extending Activity
listView.setOnItemClickListener(new OnItemClickListener() {
#Override
onItemClick(AdapterView<?> parent, View view, int position, long id)
{
//You now have the position but you will need to get your model list and use .get(position) and cast it to Model to get access to it.
}
});
}
//First define your list view item xml… something like this.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#color/white"
android:layout_marginTop="10dp"
android:padding="10dp" >
<TextView
android:id="#+id/item1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#color/custom_blue"
android:text="TextView" />
<TextView
android:id="#+id/item2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="4dp"
android:textColor="#color/custom_grey"
android:text="TextView" />
</LinearLayout>
//Then you define your list list adapter.
public class MyListAdapter extends ArrayAdapter<MyModel> {
private Context context;
private ArrayList<MyModel> myModel;
public MyListAdapter(Context context, ArrayList<MyModel> myModelList) {
super(context, R.id.icon, myModelList);
this.context = context;
this.myModelList = myModelList;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = null;
View rowView = convertView;
TextView myItemName = (TextView)rowView.findViewById(R.id.item1);
TextView myItemTitle = (TextView)rowView.findViewById(R.id.item2);
//use your models getters/setters
myItemName.setText(myModelList.get(position).getItemTitle());
myItemTitle.setText(myModelList.get(position).getItemName());
return rowView
}
}
//Now use both the list adapter and list item in your ListFragment or ListActivity.
ArrayList<MyModel> myModelList = new ArrayList<MyModel>();
MyListAdapter myApt = new MyListAdapter(this, myModelList);
setListAdapter(myApt);
//For clicking on the items:
#Override
protected void onListItemClick(ListView l, View v, int position, long id) {
// ListView Clicked item value
String itemValue = l.getItemAtPosition(position).toString();
doSomethingWihtMyItemMethod(position);
}
/* You can customize your list item anyway you like, just be aware of screen real estate when doing so.Hope this helps. */
I created this class called GeoArea, which is suppose to store "Geographical Area" that have children Geographical Areas, this is fairly strait foward:
public class GeoArea {
public String id;
public String name;
public List<GeoArea> subGeoAreas;
public GeoArea parentGeoArea;
public GeoArea(String id) {
this.id = id;
name = id;
subGeoAreas = new LinkedList<GeoArea>();
}
#Override
public String toString() {
return name;
}
}
I have created the following Layout to render it on Android, the idea here is to for each GeoArea to recursively render it self and then it's children GeoArea in a listView:
//layout_geo_area.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/txtGeoAreaName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:gravity="left"
android:text="Geo Area Name"
android:textAppearance="?android:attr/textAppearanceLarge" />
<ListView
android:id="#+id/listViewChildGeoAreas"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/txtGeoAreaName"
android:gravity="left" >
</ListView>
</RelativeLayout>
This is my adapter I created for GeoArea to be displayed in a listView:
public class AdapterGeoArea extends ArrayAdapter<GeoArea>{
private ArrayList<GeoArea> _myGeoArea;
private Context _myContext;
LayoutInflater _inflater;
public AdapterGeoArea(Context context, ArrayList<GeoArea> myGeoArea) {
super(context, 0, myGeoArea);
_myGeoArea = myGeoArea;
_inflater = LayoutInflater.from(context);
_myContext = context;
}
public int getCount() {
return _myGeoArea.size();
}
public View getView(int position, View convertView, ViewGroup parent) {
GeoAreaLayoutHolder holder;
if (convertView == null) {
convertView = _inflater.inflate(R.layout.layout_geo_area,parent,false);
holder = new GeoAreaLayoutHolder();
holder.txtGeoAreaName = (TextView)convertView.findViewById(R.id.txtGeoAreaName);
holder.txtGeoAreaName.setTag(convertView);
holder.listViewChildGeoAreas = (ListView)convertView.findViewById(R.id.listViewChildGeoAreas);
holder.listViewChildGeoAreas.setTag(convertView);
} else {
holder = (GeoAreaLayoutHolder) convertView.getTag();
}
GeoArea curGeoArea = _myGeoArea.get(position);
holder.txtGeoAreaName.setText(curGeoArea.name);
if(curGeoArea.subGeoAreas.size()>0){
ArrayList<GeoArea> testList = new ArrayList<GeoArea>();
AdapterGeoArea adapter = new AdapterGeoArea(_myContext, testList);
for(GeoArea childGeoArea:curGeoArea.subGeoAreas){
testList.add(childGeoArea);
}
holder.listViewChildGeoAreas.setAdapter(adapter);
}
return convertView;
}
static class GeoAreaLayoutHolder {
public TextView txtGeoAreaName;
public ListView listViewChildGeoAreas;
}
}
And here is my Activity that I am using to set it all up:
public class ActivityGeoAreas extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_geo_area);
GeoArea.searchTerm = "Bar & Grill";
GeoArea torontoArea = new GeoArea("cityOfToronto");
ArrayList<GeoArea> testList = new ArrayList<GeoArea>();
testList.add(torontoArea);
AdapterGeoArea adapter = new AdapterGeoArea(this, testList);
ListView lv = (ListView) findViewById(R.id.listViewChildGeoAreas);
lv.setAdapter(adapter);
}
}
When I try to run it, I get the error nullPointerException on the line:
holder.txtGeoAreaName.setText(curGeoArea.name);
What am I doing wrong?
You may want to check ExpandableListView may suit your needs better
http://developer.android.com/reference/android/widget/ExpandableListView.html
An example # http://www.androidhive.info/2013/07/android-expandable-list-view-tutorial/
Continuing from my previous answer to your question ( i though that solved your problem)
To display just name in your listview
list_row.xml // this is the layout with textview to be inflated in getView.
Each row will have textview
<?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/textGeoArea"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="14dp"
android:text="Choose Area"
android:textAppearance="?android:attr/textAppearanceLarge" />
</RelativeLayout>
layout_geo_area.xml // with only listview no textview
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ListView
android:id="#+id/listViewChildGeoAreas"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:gravity="left" >
</ListView>
</RelativeLayout>
Now your adapter class
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = inflater.inflate(R.layout.list_row,parent,false);
// inflate list_row.xml with textview
holder = new ViewHolder();
holder.tv = (TextView)convertView.findViewById(R.id.textGeoArea);
holder.setTag(convertView);
}
else {
holder = (ViewHolder) convertView.getTag();
}
GeoArea curGeoArea = _myGeoArea.get(position);
holder.tv.setText(curGeoArea.name);
return convertView;
}
static class ViewHolder // use a view holder for smooth scrolling an performance
{
TextView tv;
}
You have a custom adapter.
public class AdapterGeoArea extends ArrayAdapter<GeoArea>{
Now you set the adapter to listview like below
AdapterGeoArea adapter = new AdapterGeoArea(this, testList);
ListView lv = (ListView) findViewById(R.id.listViewChildGeoAreas);
lv.setAdapter(adapter);
So why do you need the below. remove these
if(curGeoArea.subGeoAreas.size()>0){
ArrayList<GeoArea> testList = new ArrayList<GeoArea>();
AdapterGeoArea adapter = new AdapterGeoArea(_myContext, testList);
for(GeoArea childGeoArea:curGeoArea.subGeoAreas){
testList.add(childGeoArea);
}
holder.listViewChildGeoAreas.setAdapter(adapter);
I have made one custom ListView but it is not calling any onclick listener or context menu that I have registered.
Here is my custom adapter:
class AdapterContactsActivity extends BaseAdapter {
private Activity activity;
private ArrayList<HashMap<String, String>> rowdata;
private static LayoutInflater inflater = null;
public ArrayList<String> checkedContacts = new ArrayList<String>();
public AdapterContactsActivity(Activity a,
ArrayList<HashMap<String, String>> d) {
activity = a;
rowdata = d;
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public int getCount() {
return rowdata.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(final int position, View convertView, ViewGroup parent) {
if (convertView == null)
convertView = inflater.inflate(R.layout.item_listview_contacts,
null);
final ViewHolder holder = new ViewHolder();
holder.txtTitle = (TextView) convertView.findViewById(R.id.textView1);
holder.chkBox = (CheckBox) convertView.findViewById(R.id.checkBox1);
final HashMap<String, String> row = rowdata.get(position);
// Setting all values in listview
holder.txtTitle.setText(row.get(EmsContactsActivity.KEY_TITLE));
final String contact_id = row.get(EmsContactsActivity.KEY_ID);
convertView.setTag(contact_id);
holder.txtTitle.setTag(contact_id);
if (checkedContacts.contains(contact_id))
holder.chkBox.setChecked(true);
else
holder.chkBox.setChecked(false);
holder.chkBox.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
if (!holder.chkBox.isChecked()
&& checkedContacts.contains(contact_id))
checkedContacts.remove(contact_id);
else {
checkedContacts.add(contact_id);
}
}
});
return convertView;
}
static class ViewHolder {
public TextView txtTitle;
public CheckBox chkBox;
}
}
Also my row's item view:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#android:color/black" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_toRightOf="#+id/checkBox1"
android:padding="5dp"
android:textAppearance="#android:style/TextAppearance.Large"
android:textColor="#android:color/white" />
<CheckBox
android:id="#+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:padding="5dp" />
</RelativeLayout>
Now I have added all contacts to the adapter but the on click of ListView item I can not even get logcat notification also so on click event I not called.
ListView Code :
Cursor allContacts = getAllContacts();
if (allContacts != null && allContacts.getCount() > 0) {
txtEmptyText.setVisibility(View.GONE);
registerForContextMenu(listViewContacts);
listViewContacts.setVisibility(View.VISIBLE);
listViewContacts.setFastScrollEnabled(true);
listViewContacts.setTextFilterEnabled(true);
listViewContacts.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
listViewContacts.setBackgroundColor(Color.TRANSPARENT);
searchList = new ArrayList<HashMap<String, String>>();
searchList = getArrayListWithContacts(allContacts);
txtTotalContacts.setText("Displaying " + allContacts.getCount()
+ " contacts");
// Wrap your adapter within the SimpleSectionAdapter
searchAdapter = new AdapterContactsActivity(this, searchList);
// Set the adapter to your ListView
listViewContacts.setAdapter(searchAdapter);
listViewContacts.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View v,
int position, long arg3) {
// TODO Auto-generated method stub
Log.i("CLICKED", position + " clicked");
}
});
} else // No Contacts Found
{
String text = "<div>You don't have any contacts to display.<br /><br />"
+ "To add a contacts, <b>Menu</b> and touch:<br /><br />"
+ "• <b style='color:#FFFFFF;'>Accounts</b> to add or configure and account with contacts you can sync to the phone<br /><br />"
+ "• <b>New Contact</b> to create a new contact from scratch<br /><br />"
+ "• <b>Import/Export</b></div>";
txtEmptyText.setVisibility(View.VISIBLE);
listViewContacts.setVisibility(View.GONE);
txtEmptyText.setText(Html.fromHtml(text));
editSearchContacts.setEnabled(false);
}
Set the focusable property on the CheckBox to false:
<CheckBox
android:id="#+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:padding="5dp"
android:focusable="false" />
Also, you may want to inflate the row layout like this:
convertView = inflater.inflate(R.layout.item_listview_contacts, parent, false);
Your CheckBox has onClickListener so it can grab listview's click events.
Are you using OnItemClickListener on your ListView when you try to handle click events ( listView.setOnItemClickListener(...)) ?
If You are creating any custom row layout for the list item then.
Inside Row.xml
In Parent Linear Layout Or Relative LAyout you should put the one line
android:descendantFocusability="blocksDescendants"
This is working fine for me.