Im fairly new to Android development. I have a custom ListView that is populated with data from a DatabaseTable. The ListView-items consist of CATEGORY, DATE, TITLE and AMOUNT.
private class lvIncomeListener implements AdapterView.OnItemClickListener {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String item = ???;
displayItemClicked("List-item Clicked:",item);
}
}
Now, I want to add an OnItemClickListener to the ListView, so that when an item in the list is clicked, a DialogFragment will display the data from that particular row in the Database that is shown in the ListView, like
"Item Clicked: Category: food, Date: 17/10/25, Title: Restaurant, Amount: 20sek"
... how is the best way to go about to achieve this?
Since you have a custom adapter, I assume you have a custom class where you store your list data maybe like this:
public class YourListData {
private String catagory;
private String date;
public YourListData(){
}
public void setCatagory(String cat){ this.catagory = cat; }
public void setDate(String date){ this.date = date; }
public String getCatagory(){ return this.catagory; }
public String getDate() { return this.date; }
}
Now in your onItemClick method in your Activity get the list data like this:
mYourListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
YourListData data = (YourListData) parent.getItemAtPosition(position);
String cat = data.getCatagory();
String date = data.getDate();
//...
//Send data to your fragment
}
});
Related
I have created my own class (Course) to hold multiple strings and pass the object to populate a list using ArrayAdapter and AsyncTaskLoader (the strings are being filled from a JSON api).
Let's say I have these 3 Strings inside my class:
private String mCourseTitle;
private String mTime;
private String mTrainer;
public String getCourseTitle() {
return mCourseTitle;
}
public String getTime() {
return mTime;
}
public String getTrainer() {
return mTrainer;
}
I want to set up an item click listener inside my Fragment that when tapped, shows a toast message with only the Course Title String and I'm kinda stuck...
How do I extract the title to show it in a Toast from the clicked item?
// Create a new adapter that takes an empty list of days as input
mAdapter = new DayAdapter(getActivity(), new ArrayList<Day>());
// Set the adapter on the {#link ListView}
// so the list can be populated in the user interface
listView.setAdapter(mAdapter);
//on item click Listener
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
// Show the title
Toast.makeText(getContext(), Title, Toast.LENGTH_SHORT).show();
}
});
Here is the answer
//on item click Listener
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
Course yourCourse = yourList.get(position);
String yourCourseTitle = yourCourse.getCourseTitle();
// Show the title
Toast.makeText(getContext(), Title, Toast.LENGTH_SHORT).show();
}
});
hi im android programmer and i want to display my price of product in text view when i selected item in spinner
so , i create array list and convert my json object to array list with product class and adapt my array in spinner with fundapter
so my spinner get data and inflated on any view has been created in parent
so i wana , select my product name which name is ("نام محصول") and then this object load data from my array list so i wana take price of any product i selected in spinner to display it in text view which has value "0"
please help me to take position of this array list which represent data in my spinner and show my price in text view . please see my app pic and code
app view
so here my json file pic
json pic
public void add (View v){
count=count+1;
LayoutInflater in = getLayoutInflater();
final LinearLayout line = (LinearLayout) findViewById(R.id.parentorder);
final View view=in.inflate(R.layout.packet_list
, line , false);
TextView txt=(TextView)view.findViewById(R.id.textView4);
txt.setText(String.valueOf(count));
TextView co =(TextView)findViewById(R.id.cotxt);
co.setText(String.valueOf(count));
PostResponseAsyncTask task1 = new PostResponseAsyncTask(OrderActivity.this, new AsyncResponse() {
#Override
public void processFinish(String s) {
Log.d(ORD ,s);
product = new JsonConverter<products>().toArrayList(s, products.class);
BindDictionary<products> dict = new BindDictionary<products>();
dict.addStringField(R.id.txtitem, new StringExtractor<products>() {
#Override
public String getStringValue(products product, int position) {
return "" + product.nameproduct ;
}
});
BindDictionary<products> dict1 = new BindDictionary<products>();
dict1.addStringField(R.id.txtcategory, new StringExtractor<products>() {
#Override
public String getStringValue(products product, int position) {
return "" + product.category ;
}
});
adapter = new FunDapter<>(OrderActivity.this , product ,R.layout.spinner_list ,dict);
lvproduct = (Spinner)view.findViewById(R.id.spinner);
lvproduct.setAdapter(adapter);
FunDapter<products> adapter1 = new FunDapter<>(OrderActivity.this , product ,R.layout.category_list ,dict1);
category = (Spinner)view.findViewById(R.id.spinner2);
category.setAdapter(adapter1);
line.addView(view);
lvproduct.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
}
});
task1.execute("http://mybofeh.ir/android/listback");
}
and here my product class
public class products {
#SerializedName("idproduct")
public int idproduct ;
#SerializedName("name product")
public String name product;
#SerializedName("category")
public String category;
#SerializedName("price")
public BigInteger price;
}
AutoCompleteTextView lets users choose a string from a list of valid values. Like, I imagine, every developer who wants to use this yoke, I am much more interested in the id of the user's selection than its string label. Is there any way to retrieve the id property of a chosen object, or its index in the source array?
The following C# code let's users pick from a list of SomeObject. I'm working in Xamarin, but don't let this put you off. Fix my problem in java and I'll happily make it work in C#
public class AutoCompleteField : PhysicalField
{
protected AutoCompleteTextView actv;
public AutoCompleteField(IList<SomeObject> choices, LogicalField logical, string id)
: base(logical, id)
{
_choices = choices;
}
protected ArrayAdapter<SomeObject> _adapter;
public override void addToView(LayoutInflater inflater)
{
var ctx = App_NotMobility.CurrentActivity;
actv = new AutoCompleteTextView(ctx);
actv.Id = _form.generateId();
// test choices
var _choices = new List<SomeObject>();
_choices.Add(new SomeObject(234, "Oranges"));
_choices.Add(new SomeObject(456, "Apples"));
_choices.Add(new SomeObject(789, "Bananas"));
_adapter = new ArrayAdapter<SomeObject>(ctx, Android.Resource.Layout.SimpleDropDownItem1Line, _choices);
actv.Adapter = _adapter;
actv.ItemClick += delegate(object sender, AdapterView.ItemClickEventArgs e)
{
// HOW DO I ACCESS THE ID OR THE INDEX OF USER'S SELECTION ?????????????????
};
_form.AddView(actv);
}
}
public class SomeObject
{
public int Id { get; set; }
public string Label { get; set; }
public SomeObject(int id, string label)
{
Id = id;
Label = label;
}
public override string ToString()
{
return Label;
}
}
Once you have initialized the adapter and overdid the item click, all you need to do is get the particular object from your adapter at that particular position of item which you clicked.
In java it would be somewhat similar to,
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
SomeObject someObject = (SomeObject) adapter.getItem(position);
int id = someObject.getId();
}
Thats all you would need. I am not sure about your code in xamarin, how you would get the position because i don't see any method where the position is input variable, may be you could add the tag to your view and can get the tag on your click method.
var position = ((View)sender).Tag;
But i would recommend , if you can create a class extend the base adapter, that way you will the method GetView to override and can easily do what you are looking for. You constructor could be like this for start,
List<SomeObjects> items;
Activity context;
public CustomAdapter(Activity context, List<SomeObjects> items)
: base()
{
this.context = context;
this.items = items;
}
Ankush's answer worked. I'm posting the C# code here because there are some subtleties with casting and generics...
public class myActv : AutoCompleteTextView, AdapterView.IOnItemClickListener
{
PhysicalField _physical;
public myActv(Activity ctx, PhysicalField physical) : base(ctx)
{
OnItemClickListener = this;
_physical = physical;
}
public void OnItemClick(AdapterView parent, View view, int position, long id)
{
// This is the punchline...
SomeObject whatIwant = ((ArrayAdapter<SomeObject>)this.Adapter).GetItem(position);
}
}
Here searchText is an Autocompletetextview..
searchText.setOnItemClickListener(new OnItemClickListener()
{
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id)
{
int position = position; //Adapter selection position
}
});
I have tied my application to Firebase database and after being able to display them I also want to be able to select them and access their textview values. However .getValue() does not work for views. I know that my code is very messy and my selector is only working one way, but can you help me to find out what is going on. I will add a screenshot to make things more clear. At the moment when clicking on one of the items int num = Integer.parseInt(text) gives an error and the app will crash because the value I get from view is "Android.widget...", not what I want to get.
Screenshot pic:
Orders.java
public class Orders extends ActionBarActivity {
public final static String TOTAL_SUM = "com.nordscript.checkmate.SUM";
// Declare the UI components
private ListView foodList;
// Declare an ArrayAdapter that we use to join the data set and the ListView
// is the way of type safe, means you only can pass Strings to this array
//Anyway ArrayAdapter supports only TextView
private ArrayAdapter arrayAdapter;
private Firebase ref;
private Orders activ;
private ArrayList<String> dishes;
public int total;
#Override
protected void onCreate(Bundle savedInstanceState) {
activ = this;
dishes = new ArrayList<String>(20);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_orders);
// Initialize the UI components
foodList = (ListView)findViewById(R.id.listView1);
// Create a reference to a Firebase location
ref = new Firebase("https://xxxxxxxxxx.firebaseio-demo.com/Restaurants/Restaurant 2/Tables/Table 2/Orders");
// Read data and react to changes
ref.addChildEventListener(new ChildEventListener() {
#Override
public void onChildAdded(DataSnapshot snapshot, String previousChildName) {
Map s = snapshot.getValue(Map.class);
dishes.add(snapshot.getName() + " " + ((Map)snapshot.getValue(Map.class)).get("Price"));
Log.i("Test", dishes.toString());
arrayAdapter = new ArrayAdapter(activ, android.R.layout.simple_list_item_1, dishes.toArray());
// By using setAdapter method, you plugged the ListView with adapter
foodList.setAdapter(arrayAdapter);
}
#Override public void onChildChanged(DataSnapshot snapshot, String previousChildName) { }
#Override public void onChildRemoved(DataSnapshot snapshot) {
Map s = snapshot.getValue(Map.class);
dishes.remove(snapshot.getName() + " " + ((Map)snapshot.getValue(Map.class)).get("Price"));
Log.i("Test", dishes.toString());
arrayAdapter = new ArrayAdapter(activ, android.R.layout.simple_list_item_1, dishes.toArray());
// By using setAdapter method, you plugged the ListView with adapter
foodList.setAdapter(arrayAdapter);
}
#Override public void onChildMoved(DataSnapshot snapshot, String previousChildName) { }
#Override
public void onCancelled(FirebaseError arg0) { }
});
foodList.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
view.setBackgroundColor(Color.GREEN);
String text = view.toString();
text.replaceAll("[^\\d.]", "");
int num = Integer.parseInt(text);
total += num;
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.orders, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
public void toPayment(View view) {
Intent pay = new Intent(this, PaymentMethod.class);
pay.putExtra(TOTAL_SUM, total);
startActivity(pay);
}
}
What i understand from your question : Suppose when you click on 3rd item i.e "pudding 8", you want this value "pudding 8"(textview value). right??
If that so than you just have to get values from your ArrayList which you pass to the adapter on first place with the help of position attribute inside your setOnItemClickListener like this :
foodList.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
view.setBackgroundColor(Color.GREEN);
String text = dishes.get(position);
// do what you want to do with this value.
}
});
Change your onClickListener() like that:
foodList.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
view.setBackgroundColor(Color.GREEN);
String text = (String)parent.getItemAtPosition(position);
text.replaceAll("[^\\d.]", "");
int num = Integer.parseInt(text);
total += num;
}
});
Or you can use SimpleAdapter for displaying string and integer values separately using two textviews in a separate xml layout. Using that you can get values on onclick() in a better way.
You need to gettext of that particular view, view.getText().toString();
foodList.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
view.setBackgroundColor(Color.GREEN);
String text = view.getText().toString();
text.replaceAll("[^\\d.]", "");
int num = Integer.parseInt(text);
total += num;
}
});
It may help you, but it is bad way:
foodList.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String item = (String) arrayAdapter.getItem(position);
String[] split = item.split(" ");
int num = Integer.parseInt(split[1]);
total += num;
}
});
But it is very urge...
As for me, you need to extends Adapter, to collect into it your custom items, and after clicking gets it and takes integer value you need.
I know this might become a little too late but, hope this
helps someone who was looking for similar solution to Custom ArrayAdapter with multiple values.
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
ListItems item = (ListItems) parent.getItemAtPosition(position);
System.out.println("Item: "+item.getName());
}
});
I have a ListView with a custom Adapter that extends ArrayAdapter. It's a ArrayAdapter of Type Artist.
Artist is a very small class that has a name and an id. The Artist Class has toString() overridden to return just the name.
I have an EditText. The EditText has an TextChangeListener where i call .getFilter().filter(chars, callback) on my adapter.
In the Filter.Filterlistener().onComplete() callback i print the count and it looks really good. As i type the count decreases. So it seams everything works as advertised, but the List stays the same. I tried to call artistAdapter.notifyDataSetChanged() to force the list to redraw, but nothing happens. [see 2.)]
I am tinkering around for days now! I am desperate.. Hopefully someone can have a look on my code and tell me what i am doing wrong!
Thanks!
Here is what i have done:
1.) Defined a ListView and an EditText like this:
<EditText xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/list_search_text"
android:layout_width="fill_parent"
android:layout_height="35dip"
android:layout_below="#id/header">
</EditText>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/list_search"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
</ListView>
2.) Setup my ListView in the Activities onCreate():
private ListView listView = null;
private ArtistAdapter artistAdapter = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.search_artists);
artistAdapter = new ArtistAdapter(this, R.layout.row, list); // 'list' is an ArrayList<Artist>
listView = (ListView) findViewById(R.id.list_search);
listView.setAdapter(artistAdapter);
listView.setFastScrollEnabled(true);
listView.setTextFilterEnabled(true);
listView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> av, View v, int position, long id) {
// do something
}
});
EditText txtSearch = (EditText) findViewById(R.id.list_search_text);
txtSearch.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable arg0) { }
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) { }
public void onTextChanged(CharSequence chars, int start, int before, int count) {
artistAdapter.getFilter().filter(chars, new Filter.FilterListener() {
public void onFilterComplete(int count) {
Log.d(Config.LOG_TAG, "filter complete! count: " + count);
artistAdapter.notifyDataSetChanged();
}
});
}
});
}
3.) This is my ArtistAdapter in short. I added an remove() and add() method:
public class ArtistAdapter extends ArrayAdapter<Artist> implements SectionIndexer {
private List<Artist> items;
/* other stuff like overridden getView, getPositionForSection, getSectionForPosition and so on */
#Override
public void remove(Artist object) {
super.remove(object);
items.remove(object);
}
#Override
public void add(Artist object) {
super.add(object);
items.add(object);
}
}
4.) My artist has also the toString() overridden:
public class Artist implements Comparable<Artist> {
public String uid;
public String name;
public Artist(String id, String name) {
this.uid = id;
this.name = name;
}
public int compareTo(Artist another) {
return this.name.compareToIgnoreCase(another.name);
}
#Override
public String toString() {
return this.name;
}
}
I found the solution. I have rewritten the whole code from scratch and found the problem.
In my custom ArrayAdapter called ArtistAdapter (see 3. in question) if have a var to store the items:
private List items;
And in my overridden getView() when i want to get the current item i did:
items.getItem(position)
now i do a:
getItems(position) (so the item is retrieved from the storage of the base class and not my own) and this seems to do the trick!
This is my getView() as it is now (the version, that is working):
#Override
public View getView(int position, View convertView, ViewGroup parent) {
LinearLayout artistView;
Artist art = getItem(position);
if (convertView == null) {
artistView = new LinearLayout(getContext());
String inflater = Context.LAYOUT_INFLATER_SERVICE;
LayoutInflater vi;
vi = (LayoutInflater)getContext().getSystemService(inflater);
vi.inflate(resId, artistView, true);
} else {
artistView = (LinearLayout) convertView;
}
TextView nameView = (TextView)artistView.findViewById(R.id.txt_name);
TextView uidView = (TextView)artistView.findViewById(R.id.txt_uid);
nameView.setText(art.name);
uidView.setText(art.uid);
return artistView;
}
Pfu, this was a really annoying bug...
Try using listView.setFilterText() rather then adapter filter.
You have to override the toString() method, to return the text you want to filter.