I have one problem.
I want to get the position of Button in List View.
In below image when I clicked in Edit or Delete button i just want its position in List View.
How it possible?
This is my Office Management Screen. All the data getting in ListView run-time from my web-service.
I get the data in List View by using this code-
ListAdapter adapter = new SimpleAdapter(Office_Mgmt.this, officeList, R.layout.office_mgmt_list_model, new String[] { "office_name" }, new int[] { R.id.label});
setListAdapter(adapter);
You can create your custom adapter, passing the context of your app as argument to set the click:
listView.setAdapter(new PesquisaAdapter(this, anunciantescidades, this);
Then, in the constructor of your adapter you will have a OnClickListener to recieve the argument this you passed:
public PesquisaAdapter(Context context, List<Anunciante> anunciantes, OnClickListener onClick1)
In the getView method of the adapter, you can set onClickListener of the button:
#Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflater.inflate(R.layout.your_custom_layout, null);
Button btn = (Button) v.findViewById(R.id.yourbutton);
btn.setOnClickListener(onClick1);
}
In your java, you can implements onClickListener, and then do what you want with your button:
#Override
public void onClick(View v) {
if(yourbutton.getId() == v.getId()){
final int position = listView.getPositionForView((LinearLayout)v.getParent());
}
}
So, you will have the position in the list that you clicked, and you can manage the click of the edit and delete separately.
Hope it helps!
implement onItemClick(AdapterView<?> parent, View view, int position, long id) for the listview.
Position and view can be identified from the handler. You can set additional info using setTag while creating the view inside the Adapter's getView method and retrieve in the handler and then verify in the handler if required.
Related
I'm trying to put a button to delete a row of a listview. I've modified the layout of the single rows like this:
With lst.setOnItemClickListener... I manage the click on the row, but I don't know how to click the button inside the list.
It can be done?
Search on google "custom adapter"
Then the 5 first links :
Custom Adapter for List View
http://www.javacodegeeks.com/2013/06/android-listview-custom-adapter-with-imageview.html
http://www.learn-android-easily.com/2013/06/listview-with-custom-adapter.html
http://www.vogella.com/tutorials/AndroidListView/article.html
http://developer.xamarin.com/recipes/android/data/adapters/create_a_custom_adapter_for_contacts/
Override your adapter getview method to handle the button click.
public View getView(final int position, View convertView,
ViewGroup parent) {
LayoutInflater inflater = getLayoutInflater();
View row = inflater.inflate(R.layout.vehicals_details_row, parent,
false);
Button deleteImageView = (Button) row.findViewById(R.id.DeleteImageView);
deleteImageView.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
});
}
}
In your listItem xml layout, set the button to have the following attribute and it will cause the list item to be clickable as well:
android:focusable="false"
I have been developing an android application and i am stuck in the middle.
The problem is i am using SimpleAdapter to do the adapter stuff and show items in the Listview and as far as i know i cannot override the getView() method of SimpleAdapter class to bound click listeners to the items.
There is a other way to handle click events of sub items like using XML, you can write in the XML like android:clickable="true"and android:onClick="clicklistenr", using this i can get the item but my problem is if i use this then i cannot get the position of the adapter which i need to get adapter item values and handle other tasks. So i am stuck here any help would be appreciable. thanks.
For example i have a ListView which contains one image, TextView, like Button, share Button in each of its items. And there is no way i can find that either its image or button clicked using setOnItemClickListener. So i need a way to handle click events of these sub items of a ListView, i am using SimpleAdapter.
Just call listView.setOnItemClickListener() with your implementation of the listener.
and use like
list.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
}
});
Where list=(ListView)findViewById(R.id.list); and list.setAdapter(your_adapter);
For More details Follow: http://www.androidhive.info/2012/02/android-custom-listview-with-image-and-text/
Hope It Will Help You.. :)
You can use like
myListView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
HashMap<String, Object> obj = (HashMap<String, Object>) adapter.getItem(position);
String result= (String) obj.get("name");
Log.d("Yourtag", name);
}
});
First of all your problem is how to handle the items of a custom listview.. not sub. Anyways...
If you are using SimpleAdapter , you may use getView().But if you are using SimpleAdapter you don't need to use the getView() as the it handles the mapping of data to your layout via the resource. For inforamtion check the SimpleAdapter in developer site.
Another thing is there is not mandatory for using any particular adapter. You can create any adapter class which will extends the BaseAdapter which will implement the getView().
Inside getView() you can able to inflate your custom layout(which contains the image,button etc..) to your view or convertview.something like:
#Override
public View getView(int position, View convertView, ViewGroup parent) {
vi = convertView;
if (convertView == null)
vi = inflater.inflate(R.layout.yourcustomlayout, null);
//Initialize your custom views here
TextView someText= (TextView) vi.findViewById(R.id.tvSometext);
Button likeButton = (Button ) vi.findViewById(R.id.btnLike);
//put data or call onclicklistener or
//whatever you want to do with custom views
likeButton .setOnClickListener(...){
//on click
}
}
Ans simply call this through your constructor with some data and appropriate context.
Amir,
I am not sure you found the solution or not. You can do this way:
#Override
public View getView(int position, View view, ViewGroup viewGroup) {
//for each subitem, set click listener & set tag having position as
// value.
ImageView imv = (ImageView)view.findViewById(R.id.live_view);
imv.setTag(i);
imv.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d("INFO","Live view clicked");
//This will give you position in listview.
int position = (int) v.getTag();
}
});
}
I hope it will help you and others looking to find relevant answer.
May be there is some other solution too, but it will surely work.
Question
I have a listView inside a DialogFragment and I want to fire certain callbacks only when certain particular items inside a row are fired. How can I do that?
Basically, I want to do something like this
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
final int viewId = view.getId();
if ((viewId == R.id.textView1) || (viewId == R.id.textView2)) {
// do something...
}
which I can't. Read further if you don't know why.
What I tried
I tried to look into the documentation, but the OnItemClickListener callback doesn't offer as a parameter the exact clicked view (the View you can see in the signature is the whole row).
Also, I tried to set a simple onClick callback on the single view in the adapter, but this overrides the listSelector and other behavior a list should have. Reading in the documentation, I found it's explicitly written that we should set callbacks via the onListItemClick(...) method (not via onClick(...)), so I'm looking for a way to do that, using this method, not to override any default list behavior.
I was trying to get this done by working on the xml. To my surprise, I found that if I set a view android:clickable property to true, the onListItemClick callback won't fire (I thought it was the opposite),
so a partial solution would be to set to android:clickable=true every view in the row apart from the one I want to fire the callback, but that is not a solution because if the user clicks where there is padding or white space, the callback will fire. Also, I found that if I set the parent of the row's view to android:clickable=true and the child views I want to handle with the callback to android:clickable=false, this won't work, because apparently the property is not overwritten.
EDIT Sorry for the really bad title this question had before, I didn't even noticed I submitted the question.
new Answer, hope I understood now :)
In your adapters getView, attach an OnClickListener to any view in your layout you want to fire. (more pseudocode)
public class Adapter extends ArrayAdapter<XYZ> {
private int resource;
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if(convertView==null) convertView = ((LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(this.resource, parent, false);
((Button)convertView.findViewById(R.id.YOUR_BUTTON_IN_LAYOUT)).setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
DOSTUFF();
}
});
return convertView ;
}
}
old Answer:
The position indicates where you are in the list (pseudocode).
listView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, final int position,long arg3) {
YOUR_ITEM_BACKED_BY_ADAPTER item = listView.getItemAtPosition(position);
if(item==THE_FIRST_ITEM_IN_LIST) doSomething();
else if(item == THE_LAST_ITEM_IN_LIST) doSomethingElse();
}
});
You can set listeners for other views inside the adapter's getView
public class MyAdapter extends ArrayAdapter<MyItem> implements View.OnClickListener {
public View getView(int position, View convertView, ViewGroup parent) {
// setup the converView inflating it, for simplicity I've removed that code
MyItem item = getItem(position);
text1 = (TextView)convertView.findViewById(R.id.text1);
text2 = (TextView)convertView.findViewById(R.id.text2);
text1.setOnClickListener(this);
// pass the item to use when clicked
text1.setTag(item);
text2.setOnClickListener(this);
text2.setTag(item);
}
public void onClick(View v) {
MyItem item = v.getTag();
switch (v.getId()) {
case R.id.text1:
download(item);
break;
case R.id.text2:
upload(item);
break;
}
}
}
Instead of hardcoding action (eg download) inside the adapter you can pass to it an interface and for example the calling activity can implement that interface
I'm developing an application for android and now I have implemented a ListView that shows a list of courses, connected to a database.
I would like to know how to include, with the name, an hidden id (that come from the db) so that once the user click on the elements the app goes to the relative view of the selected courses.
And how can I maintain the id during the navigation inside the course-view?
At the moment my code just load the name of the courses from the db and set in the list view:
ArrayAdapter<String> result = new ArrayAdapter<String>(CourseActivity.this, android.R.layout.simple_list_item_1);
for (CourseRecord c : get())
result.add(c.getFullname());
lv.setAdapter(result);
obviously I'm able to do also c.getid() but I don't where to put the id.
Thank you very much.
P.S.: Maybe does someone have also a really nice graphics of list view?
change your array adapter like this.
private ArrayAdapter<String> result = new ArrayAdapter<String>(this, android.R.layout.simple_expandable_list_item_1){
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
LayoutInflater vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.row, null);
}
v.setTag(getMyIdForPosition(position));
return convertView;
}
};
and have an item click handler to recieve the selected ids
private OnItemClickListener itemClickedHandler = new OnItemClickListener() {
public void onItemClick(AdapterView parent, View v, int position, long id)
{
String myId = (String)v.getTag();
doYourStuff(myId);
}
};
assign the listener to the list
myList= (ListView)findViewById(R.id.history);
myList.setOnItemClickListener(itemClickedHandler);
You can store the id in a hidden TextView. In the list item XML, add 'android:visibility="gone"' to the TextView. Likewise in the click handler you can read the id from the textview.
You can also store id using setTag(Object object) method of a View. Use getTag() method to extract that id from that view.
As the title says I want to know the exact position of the item when I click on a view that is inside the item.
Suppose I have the following code within the getView() method from ArrayAdapter:
...
holder = new ViewHolder ();
holder.iconAction = (ImageView)convertView.findViewById (R.id.download_item_iconAction);
holder.iconAction.setOnClickListener (new View.OnClickListener(){
#Override
public void onClick (View v){
//Item X is clicked
}
});
...
Within onClick() I know the view that is clicked, v, but I don't know the position of the item.
Let's do a trick. I'm going to save the position in a ViewHolder when getView() creates the view:
public View getView (int position, View convertView, ViewGroup parent){
ViewHolder holder;
if (convertView == null){
holder = new ViewHolder ();
holder.iconAction = (ImageView)convertView.findViewById (id);
holder.iconAction.setOnClickListener (new View.OnClickListener(){
#Override
public void onClick (View v){
int pos = (Integer)v.getTag ();
}
});
holder.iconWait.setTag (position);
...
}else{
holder = (ViewHolder)convertView.getTag ();
}
...
}
This code works... but not always. If you have to scroll the list to see all the items the views are recycled. Suppose that the list has 10 elements and only 5 are visible (visible means: if we see 1 pixel line of an item, then this item is visible). Now, if we scroll down we will see the sixth element but the first (0) is still visible. We scroll a little more and the first element will be hidden and we will see that the seventh element appears, BUT the view of this new element is the view of the first element (0). So I'm saving the positions: 0, 1, 2, 3, 4 and 5. The seventh element (6) will have saved the position 0: Wrong.
Another way to get a click callback is using the ListView's OnItemClickListener listener:
listView = getListView ();
listView.setOnItemClickListener (new AdapterView.OnItemClickListener(){
#Override
public void onItemClick (AdapterView<?> parentView, View childView, int position, long id){
...
}
});
If I scroll down I get the exact position, but with this way I receive callbacks when the item is clicked, no matter the clicked child view.
Thanks.
You're very nearly there, all you need to do is set the tag after your if/else clause. This is to make sure the tag is updated when the view is recycled as well as when it is created from new.
e.g
if (convertView == null){
holder = new ViewHolder ();
...
}else{
holder = (ViewHolder)convertView.getTag ();
}
holder.iconWait.setTag (position);
Local anonymous classes can reference final local variables.
Make position final by changing your getView() method to read:
public View getView (final int position, View convertView, ViewGroup parent) {
and then you can reference position from within the OnClickListener:
holder.iconAction.setOnClickListener (new View.OnClickListener(){
#Override
public void onClick (View v){
... use position here ...
}
});
Your second answer (setting a tag on an element) would work fine if you moved holder.iconWait.setTag (position) outside of the if/then statement -- that is, you should set the tag on recycled rows too, not just on newly-inflated ones.
I also needed to add other data to pass to onClick and it worked with strings too.
holder.iconWait.setTag ("String data here");