I need to get item's index(position) knowing its ID while using ExpandableListView. Is there any way to do this without making complete hash id->index and searching it?
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Other than using listeners, is there any way by which i can get index of an item in the list?
View 2 Replies View RelatedI have an Android ListView created with a SimpleAdapter that has more items in it than fit in the screen. After the list has been scrolled, I need to get the position in the data model of the first visible item in the list.Basically I want a function like: listView.getChildAt(0).getPositionInDataModel().Adapter has a few functions in it, like getItemId(position) that looked useful; however, the SimpleAdapter implementation just returns the passed in position, not a row id like I'd hoped.A brute force solution would be to get the View at index 0, and compare it to the view for each item in the adapter.However, there doesn't seem to be an easy way to get the view for a particular position from the adapter.
View 3 Replies View RelatedI am creating a list .. the elements of the list are drawn from sqlite database .. I populate the list using ArrayList and ArrayAdapter ...upon clicking the items on the list I want to be able to fire an intent containing info about the item clicked ... info like the index number of the item .. using the method : onItemClick(AdapterView av, View v, int index, long arg)
I do get index of the item clicked . however it is of the list currently displayed . the problem comes when I do setFilterTextEnabled(true) , and on the app type in some text to to search some item ..and then click it ..rather than giving me the index of the item on the original list it gives me the index on filtered list..
following is the snippet of code:
myListView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> av, View v, int index, long arg) {
Intent lyricsViewIntent = new Intent(iginga.this, LyricsPage.class);
lyricsViewIntent.putExtra("title", songList.get((int)arg).getTitle());
lyricsViewIntent.putExtra("id", songList.get((int)arg).getSongId());
startActivity(lyricsViewIntent);
}
});
myListView.setTextFilterEnabled(true);
Is there any way I can get the original index /position of the item instead of the one showing in filtered text ...when filtered.
I don't know exactly how to explain this problem, but I'll try. I have a ListView with several items. Each item has inside a TextView and two ImageView. I want the ImageView change when I click on them, and I want to open a context menu when I press for a long time into the ListView item.For the ImageView, everything works properly. For the whole item, I can show the context menu after a long press, but my problem is that the ImageView changes as well when I am pressing the TextView, for example.I hope you understand my problem. I think that all the children of a view are affected by an event in the parent, but I am not sure.
View 2 Replies View RelatedI jave a list of item (linearlayout inside a scrollview where i add buttons vertically to linearlayout dynamically from the java code)i need when i click on one button the item moves up (scroll up) , to make the item at the first of the screen
View 1 Replies View RelatedI need to get an item's position in spinner knowing it's ID. I've tried to do it with Spinner and SpinnerAdapter classes but there are no corresponding methods there.
View 2 Replies View Relatedcould anyone point me to some examples on how to achieve Tableview with section and Index on Section. Similar to one it's in iPhone => http://www.iphonesdkarticles.com/2009/01/uitableview-indexed-table-view.html
View 3 Replies View Related<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:id="@+id/llAddNote"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginRight="8dip"
android:background="#CCFFCC">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="24dip"
android:text="Add Notes"/>
<TableLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="24dip"
android:layout_marginRight="24dip"
android:id="@+id/tlNotes"
android:stretchColumns="0">
</TableLayout>
<Button
android:id="@+id/bAddNoteLine"
android:layout_marginLeft="24dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="ADD">
</Button>
<LinearLayout
android:id="@+id/llIndex"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="21dip"
android:gravity="center">
<Button
android:id="@+id/bSaveSubjectiveNote"
android:layout_width="192dip"
android:layout_height="wrap_content"
android:text="Save"/>
<Button
android:id="@+id/bDiscardSubjectiveNote"
android:layout_width="192dip"
android:layout_height="wrap_content"
android:layout_marginLeft="48dip"
android:background="@drawable/button"
android:text="Discard"/></LinearLayout>
</LinearLayout>
How to retrieve the index of linearLayout which has "llIndex" as id.
I want to obtain the index of the selected item in a spinner.
I am aware of the method getSelectedItem() which returns the item selected (which might be a String). But i want the index of the selected item.
Something equivalent to the setSelection(index) to set the selected item.
Of course I can get the selected item and compare it against the array of items to obtain the index, but I hope there is a better way of doing this.
I added android:fastScrollEnabled="true" to the xml description of my listview class. I was (probably mistakenly) expecting this to magically transform the scrolling of my really huge listview so that the thumb button and the indexes display on the right side.
Is there more to hooking up the listview so that the framework knows what its alphabetizing? I have custom defined cells.
I have a binary file which contains keys and after every key there is an image associated with it. I want to jump off different keys but could not find any method which changes the index positioning in input stream. I have seen the mark() method but it does not jump on different places.
Does anybody have any idea how to do that?
Is it possible to have an index on the righthand side of a ListView? This is possible on the iPhone where running down the righthand side the alphabet is shown. Touching a letter on the alphabet brings one to the beginning of the items in the ListView that start with that letter.
Is there built-in code in Android for this functionality? Or is this something one would have to custom make?
I'm using OpenGL ES to display some objects exported from Blender. Blender provides a list of vertices, a list of the face indices and a list of the 2d texture co-ordinates. Within Blender, and I believe generally in OpenGL, the texture co-ordinates map to each vertex described in the index array.
I suppose I have two questions:
I'm given to understand(see the "Applying Textures" section) that in OpenGL ES the texture co-ordinates map to the vertex buffer only, not the index buffer. Is this the case or is there a way of binding the texture co-ords to the index buffer instead?
If the above is true, is there anything to be gained from using an index buffer at all? After all to properly map the textures one will need to write out the vertex buffer with all the redundancy that would have been saved with the index buffer. Is there still a performance increase to be gained or are index buffers redundant for textured data?
i have a map file which has several tile images in the form of binary data. now i have to jump my index to different location of the file and read that tile. but i could not find anything helpful for me i also checked mark() and skip() methods.but not helping me.is there any method or class which can do what exactly i want or any hint you want to give me.
View 1 Replies View RelatedI am making application in android just like the google finance. My first step is to show the market index summary, I have search the api list. But I could not get any api related to it. I do not want to use any java script. I need basically links this example if I put the symbol as GOOG it should display the information like this.
529.06 -2.58 (-0.49%) After Hours: 529.20 +0.14 (0.03%) Apr 27, 6:47PM EDT NASDAQ real-time data - Disclaimer
1. Range 527.23 - 538.33
2. 52 week 381.54 - 629.51
3. Open 528.94
4. Vol / Avg. 3.84M/3.64M
5. Mkt cap 168.46B
6. P/E 23.97
7. Div/yield
8. EPS 22.07
9. Shares 318.41M
10. Beta 1.11
and chart for this particular symbol.
I am using a ListView with an ArrayAdapter that holds objects. When I select an item, I am capturing the position and index of the selected item. If I scroll down prior to selection, the position and index represent the location of the item in the list. Selecting that items takes me to another activity. When I use the back button to return to the list, it seems that the ListView gets a new position and index for the visible items.
As a result, I can't figure out how to reference the selected item during the restart() of the ListView Activity. I have tried to capture position and index, but as I've said, they change upon returning to the Activity.
Is my understanding of the ListView "redraw" correct? Does it renumber my items based on what's visible? -When in the life cycle is getView() called? Is there a way to force an update to the ListView so that my captured index still points to the same object?
I have a problem with ArrayList. I'm using ArrayList like this:
CODE:.........................
Where Playlist is a class inherited from another ArrayList.
I do the following:
CODE:.........................
Later, when I use 'p' to get the index in the list:
CODE:.................
an index of '1' is returned, even though inspection of the list clearly shows that it's index '4'.
why this fails?
Same problem without indexOf(), using equals():
CODE:............
New edit:
This WORKS:
CODE:.............
Solution:
As suggested, I changed the Playlist class to not enherit from ArrayList, but rather keeping an instance privately. It turned out that I only had to implement 4 ArrayList methods.
This does the trick; Now indexOf() returns the correct object!
Is someArray[index] a faster way to get to a value than someObject.field?
E.g.: if(intArray[i] == 42) {//do stuff}
VS
if(someObject.x == 42) {//do stuff}
I will try to test it soon and post the results; just wondering if you all had any thoughts.
Trying to implement simple dictionary. I want to make it so while the user is typing in the EditText box the list to scroll automatically to the best match. I don't want it to filter the list. For example if the user types "s" in the EditText I want the first word that s/he sees under the EditText box to be the first word in the dictionary that starts with "s." But the user should still be able to slide up and down and to be able to see the entire list of words. It is basically like a go to functionality. I used ArrayList to store my list of words. The data is in res/raw/data.xml file. Here is my onCreate method
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
wordListView = (ListView)findViewById(R.id.wordList);
myEditText = (EditText)findViewById(R.id.myEditText);
words = new ArrayList<Word>();
arrAdap = new ArrayAdapter<Word>(this, android.R.layout.simple_list_item_1, words);
wordListView.setAdapter(arrAdap); try {
InputStream inSource = getResources().openRawResource(R.raw.data);
DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
Document doc = builder.parse(inSource, null);
NodeList wordsList = doc.getElementsByTagName("eng-bg");
int length = wordsList.getLength();
for(int i = 0; i<length; i++) {
Element entry = (Element)wordsList.item(i);
Element eng = (Element)entry.getElementsByTagName("english").item(0);
Element bul = (Element)entry.getElementsByTagName("bulgarian").item(0);
Element id = (Element)entry.getElementsByTagName("ID").item(0);
String english = eng.getFirstChild().getNodeValue();
String bulgarian = bul.getFirstChild().getNodeValue();
int wordId = Integer.parseInt(id.getFirstChild().getNodeValue());
Word word = new Word(bulgarian, english, wordId);
addNewWord(word);
} catch (ParserConfigurationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SAXException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}wordListView.setOnItemClickListener(new OnItemClickListener(){
public void onItemClick(AdapterView<?> parent, View view, int pos, long id) {
selectedWord = words.get(pos);
showDialog(TRANS_DIALOG);
myEditText.setText(selectedWord.getEnglish());
myEditText.addTextChangedListener(new TextWatcher(){
public void onTextChanged(CharSequence s, int start, int before, int count) {
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
I have a TextView with an OnTouchListener. What I want is the character index the user is pointing to when I get the MotionEvent. Is there any way to get to the underlying font metrics of the TextView?
View 1 Replies View RelatedI need to implement an xml parser and the parsed result into an expandablelistview.
View 1 Replies View RelatedI have an expandable list view with a static array for the group data and an SQLite database for the child data. It is implemented with the BaseExpandableListAdapter and works great, except, when I edit the database to delete or add children to the list I do not see the changes onscreen. It looks like I can use the registerDataSetObserver method to notify the adapter and expandable list of a data change. What I have to do in the callback to make Android redraw the list after data changes is what I need to know. Can I do it? Documentation on this part of the SDK is a bit sparse and expandable list view example code is not a good match. Can anyone offer advice on how to use a DataSetObserver? It feels like I have to switch over to a Cursor type adapter.
View 2 Replies View RelatedThis is my ExpandableListView
CODE:..............
When I execute this in emulator, green(childDivider color) is all over the place.
It seems if childDivider is ColorDrawable, it has no bound.
I have an ExpandableListView with several groups and each group contains several children. I want to make this list searchable, just like a regular list view. I have a SimpleCursorTreeAdapter (mAdapter) for this expandlable list.
I tried to use the built in list filter using:
CODE:.......
The above code does not work for filtering.
How can I implement the search/filter functionality?
Is it possible to animate the expanding and collapsing of the groups in a ExpandableListView.
View 3 Replies View RelatedI need a solution how to get the OnChildClick working for my ExpanableListActivity.
when starting of this project the Listener was working, but now i get nothing out of it?
i tried setting the listener through: "getExpandableListView().setOnChildClickListener(this);" at several point, but it isn't responding.
Here's the source code:
CODE:............
I want to inflate a childView of ExpandableChildView component.
Code:.............
Where linearOpt is a vector that contains a lot of LinearLayout objects that I have instantiated.
CODE:..
This is R.layout.itemrow xml:
But I received this error:
CODE:.................
I want to refresh my expandablelistview, but it seems there is no way to use notifyDataSetChanged()? how can i refresh my expandablelistview?
View 2 Replies View RelatedI am newly rooted running aloysious Rom but when I press ##778 it does nothing but sit there. Is there any way You can change it. I only get 5 rings before voicemail.
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