Android :: List With Grayed Out Items
Aug 7, 2009
In Android, I want to present the user with a list. When an item on the list is selected some action is performed, and this list item is no longer selectable. It is also 'grayed out' or the like to indicate that it cannot be selected the next time the list is displayed. I have seen the isSelectable() override in Adapter, but I believe this causes the item to be treated as a separator, which causes visual problems. And I have not found a way to 'gray out' an item.
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Feb 2, 2010
I'm pretty new to Android dev and still working out a lot of things.I've got a main menu showing using the following code, but can't work out how to disable selected items in the menu. Can anybody help me with some sample code?
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May 31, 2010
I have a list where i basically need a hierarchy of items. Any children of an item would be padded slightly, as to easily distinguish their parent item. How could this be achieved? Note that i could, if needed, make each parent show no children, and then when the parent is clicked, a new list containing all of it's children is loaded. This however requires more clicking to display information than i would prefer. Also, the items themselves will contain graphics and whatnot (to show a drag'n'drop button, etc), so it would be best if it visually appeared as if the item itself had a margin, rather than the contents of the item being padded.
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Jan 12, 2010
I have a list view and an adapter that sets alternating background colors to the list items ("zebra" list style):
public View getView(final int position, View convertView, ViewGroup parent) {
int colorPos = position % colors.length;
...
convertView.setBackgroundColor(colors[colorPos]);
return convertView;}
But now, when i select an item using scroll wheel, or when I click an item, the original colors for selecting/clicking do not override my custom backgrounds (I can see the original color below the one I set).
How can I set the original colors for these states?
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Apr 27, 2010
I cannot find any example of a widget showing a scrollable list of items (e.g. text) since the widget api says there is no listview, no scrollview etc.. at all, how to implement a scrollable list inside a widget?
For example a list like friends-stream from HTC shows or many other widgets around.... do i have to code my own list-implementation for a widget.
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Dec 16, 2009
The way I want it is, per row there will be a text and is followed by a right arrow button, so that the user can click on that button to edit the content of that row. If the user is using the keypad, by using the left and right buttons on the keypad, he should be able to select the textview or the Button in that particular row. I have seen this in a couple of apps. The way I see that working on those apps appear as if they are maintaining two lists in parallel.
The reason i felt it this way is, if I am on row 1 of the list and if I press the right key on the phone keypad, then the right arrow button will get highlighted and now if I use the down key or if I keep pressing the down key, then the focus will scroll through that arrow button only as if that is an another parallel list constructed. I don't know if that is a good way to do it. I tried many for getting this to work, but couldn't succeed.
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Sep 2, 2010
I have a listview from an SQLDatabase using custom CursorAdaptor. I would like to go back to the activity that I used to create the items when I click on them in the listview. So that I can edit the entries. But nothing happen when I implement the OnItemClick method and the getItemId() on the CursorAdapter even though am not sure I am correct there. Here is my Code:
public void onItemClick(AdapterView<?> adapview, View view, int position, long rowId) {
Cursor c = adapter.retrieveRow(rowId); // retrieve row from Database
Intent edit = new Intent(this,NewItem.class);
edit.putExtra(DBAdapter.KEY_ID, rowId);
edit.putExtra(DBAdapter.Title, c.getString(c.getColumnIndex(DBAdapter.Title)));
edit.putExtra(DBAdapter.DATE, c.getString(c.getColumnIndex(DBAdapter.DATE)));
startActivity(edit); } public long getItemId(int id){ return id; }
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Oct 16, 2010
I've got the following main.xml:
<?xml version="1.0" encoding="utf-8"?> <AbsoluteLayout
android:id="@+id/widget0" android:layout_width="fill_parent"
android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android" >
<ListView android:id="@+id/listview" android:layout_width="315px"
android:layout_height="379px" android:layout_x="2px" android:layout_y="50px" >
</ListView> <TextView android:id="@+id/title" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:text="Select device:" android:textSize="17sp"
android:layout_x="-2px" android:layout_y="1px" >
</TextView> <Button android:id="@+id/refresh" android:layout_width="109px"
android:layout_height="wrap_content" android:text="Refresh" android:layout_x="209px android:layout_y="7px" >
</Button> </AbsoluteLayout>
The main class does nothing but drawing the layout. I've got the following class and layout for the listitems:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:padding="10dp" android:textSize="16sp" >
</TextView> package com.android.bluetoothp2p;
import android.app.ListActivity; import android.os.Bundle;
import android.view.View; import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener; import android.widget.ArrayAdapter;
import android.widget.ListView; import android.widget.TextView;
import android.widget.Toast;
public class BTListView extends ListActivity {
@Override public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, COUNTRIES)); ListView lv = getListView();
lv.setTextFilterEnabled(true); lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// When clicked, show a toast with the TextView text
Toast.makeText(getApplicationContext(), ((TextView) view).getText(),
Toast.LENGTH_SHORT).show(); } } ); }
Countries is just an array with a list of countries, some dummy values. Now, how do I make the list items of the BTListView class go in the ListView (with @+id/listview) of the main class? Now my list works, but it isn't clickable anymore. This is the code:
ListView lv = getListView(); lv.setTextFilterEnabled(true);
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// When clicked, show a toast with the TextView text
Toast.makeText(getApplicationContext(), "lolwat", Toast.LENGTH_SHORT).show();
} } );
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Feb 5, 2009
Can any one please tell me how to add multiple items (images/text) in list view?
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Oct 27, 2010
I want to disable few items in List View and i am using Simple Adapter to do that. I am not getting how to disable the items.
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Sep 4, 2010
On the iPhone a user is able to re-arrange the actual rows in a list. Is this possible on Android? If so, any examples would be great.
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Jul 6, 2010
I am trying to add ListView items one by one. So if I have say 60 items the application would add the views to the list view one at a time -- thus showing the user that the application is loading more things. This is my code:
try {
JSONArray j = getTaggsJSON();
Log.v(TAG, String.valueOf(j.length()));
a = new createSpecialAdapter(this, R.layout.individual_tagg_view,
R.layout.list_item, view, j);
ListView v = this.getListView();
v.setStackFromBottom(true);
setListAdapter(a);
new addViewsToList().execute(j);
} catch (UnknownHostException e) {.....
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Sep 27, 2009
what code i'd use to get what checkboxes are checked when i press the ok button for the code below.
inal CharSequence[] tags = {"first", "2nd", "third"}; boolean[] f=new boolean[tags.length]; AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle("Filter"); builder.setMultiChoiceItems(tags, f, null); builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) {
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Jun 5, 2009
I am trying to change the text color of the spinner list items individually. I would like to be able to color the top three texts black and then the bottom four grey. This way the last items look disabled, but I still want to be able to capture the event when they are chosen. I haven't been able to find any documentation on how to do that. Alternatively I would like to disable som list items, but still be able to capture the event when they are chosen.
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Dec 6, 2009
How can I access items I previously set using AlertDialog.Builder?
private static final CharSequence[] skill_levels = { "Rookie", "Average", "Expert" };
skillLevelBuilder = new AlertDialog.Builder( this ); skillLevelBuilder.setTitle( "Change Skill Level" ); skillOnClick = new DialogInterface.OnClickListener() { [...] }
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Jun 8, 2010
I am trying to compose a list with some items expandable and some single items. I wish to have it so that when either a single item or expandable list child is clicked, I can call an intent based on the text of the item.I suppose expandable lists would work, but is there a way to set items in an expandable list so that they don't have the expandable list icon? Should I use something other than a string array?What is the best way to do this?
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Nov 3, 2010
I have a ListView, displaying some items, containing an ImageView filled with a standard image at first and a line of text.
What I wanna do is downloading one thumb after another with an AsyncTask and step for step change the standard image with the downloaded one. How to realise this?
The ListView contents are managed by an enhanced ArrayAdapter.
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Jun 8, 2009
When your intent kicks knocked on the head by the OS and then restored / recreated (for example when you slide out the keyboard on the G1) if you have a ListView populated with items in an activity they appear after the recreate. However, if you have a dialog box full of list items and do the same steps, the ListView comes back up empty when the window is redrawn after the slide.
Is this an Android bug? My list is a pain in the neck to pack into a bundle, it consists of Address objects, and there might be ten of them. Am I doing something "un-android?" I'm thinking of just dimissing the dialog when this happens. But calling dismiss in onRestore (for the dialog) doesn't seem to work.
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Jun 28, 2010
I am displaying an AlertDialog with a list of selectable items on my first page, choosing one item will load to another page, but the problem is that when I go back to first one I can no more see the AlertDialog.
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Nov 13, 2010
I am getting XML data from url and displaying using a custom list adapter in a ListView. I need to display only 10 items in ListView. How I can do this?
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Oct 24, 2010
I'm very new to Android and Java development, searching and reading various tutorials and using different parts of code from around the internet, trying to make sense of it as I go. Currently I have a list created with 4 list items, what I'd like to do is assign a different icon to each of these list items, however, I've no idea how to do it, nor do I know what to search for. Here's the code:
main.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/ android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent">
<ListView android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/mainListView"> </ListView>
</LinearLayout> row.xml
<TextView xmlns:android="http://schemas.android.com/apk/res/android
android:id="@+id/rowTextView" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:padding="10dp" android:textSize="16sp" >
</TextView> FirstList.java
import java.util.ArrayList; import java.util.Arrays;
import android.app.Activity; import android.os.Bundle; import android.widget.ArrayAdapter; import android.widget.ListView; public class FirstList extends Activity {
private ListView mainListView; private ArrayAdapter<String> myListAdapter;
/** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main);
mainListView = (ListView) findViewById( R.id.mainListView);
String[] myList = new String[] {"List 1", "List 2", "List 3", "List 4"};
ArrayList<String> listObjects = new ArrayList<String>();
listObjects.addAll( Arrays.asList(myList));
myListAdapter = new ArrayAdapter<String>(this, R.layout.row, listObjects);
mainListView.setAdapter(myListAdapter);
} }
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Sep 30, 2010
In android there is A to Z selector on right side of the contacts. one can just select on of the alphabet and only those contacts will be displayed which are starting with that selected alphabet.I want to implement such kind of list.
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Sep 25, 2010
If a data row of my list contains a TextView and a Button, is it possible to format those components individually when the List row is selected? Like change drawable of a Button, font color of the TextView apart from the usual highlighting the background of the List row?
How can this be achieved?
Note: A similar question has been asked here: http://stackoverflow.com/questions/3787695/formatting-listview-row-it...
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Aug 31, 2010
I need to make a list view as shown in the sample pic for my android app. How to do it? Also I need to add image along it as seen in the sample pic. and link it to another view to show some more details.please check links shown below.
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Jan 5, 2010
I have a list that shows items containing text and image. I have to download the images from the remote server and show as list item. things are working fine. The real problem is my list could have around 100 list items and each item has image downloaded from remote server. It is giving me OutofMemory error when I fetch around 70-80 elements. Could anyone tell me the best way to manage this situation?
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May 25, 2010
While I tested my application on an Android Device turning my Android phone from landscape to portrait, results in all the list items in my list view are disappearing.
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Nov 16, 2010
I am displaying items according to different categories using Expandable Listview.Now I want to display only items ,No need of parent name or parent indicator.is there any solution from expandable list view to display only child items .I don't have time Thats y i am displaying items from expandable list view(I am already developed this one) .So please give me some suggestions.It is very urgent.
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Jun 2, 2009
I developed a List View with a custom adapter (which extends Array Adapter). The problem is that i can't selected or highlighted items. Is there a attribute to fix in the list View Layout or something else?
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Apr 26, 2010
I have been considering a new phone since my 3rd iPhone suffered it's demise and is no longer under warranty (1st Apple update bricked, 2nd stopped functioning, 3rd touch screen has gone wonky). So I have a choice to buy a new iPhone (or refurb) or go Android.
So far I have been impressed by the Android that my co-workers have. Seems very response, seems very snappy, seems pretty polished. I do have a couple questions: Is there a way to get a home screen of the droid to list out the next coming calendar items? I miss this feature from the BB and WiMo sets. Same with emails.
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Nov 3, 2010
I thought I knew how to catch list selection events in Android and then I regained consciousness. In my situation, I have a ListView that I populate with a custom view, all of the same class (let's call it the NewsChannel() class). NewsChannel consists of a LinearLayout of ImageViews and TextViews. When the list is displayed, the user may select a NewsChannel item in the list; I want to find out which list item was selected. Also, I registered an onClickListener to one of the TextViews and that works fine: when the text is clicked on, an activity is launched which is looking for the position of the NewsChannel item in the list. So, here's what my code looks like:
1. Registering the onClickListener in the ListActivity:
public class NewsListActivity extends ListActivity {...
public void onCreate(Bundle icicle) { super.onCreate(icicle);
setContentView(R.layout.news_list_format); ListView lv = getListView();
lv.setOnItemClickListener(new OnItemClickListener()
{ public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// When clicked, show a toast with the TextView text item_index = position;
Toast.makeText(getApplicationContext(), "item clicked = " + position,
Toast.LENGTH_SHORT).show(); }}); ...
2. The layout for the ListView associated with NewsListActivity:
<?xml version="1.0" encoding="UTF-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/ android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:background="@drawable/wpaper_tile" >
<ListView android:id="@id/android:list" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:layout_alignParentTop="true"
android:dividerHeight="15dp" android:divider="@android:color/transparent"
android:cacheColorHint="@android:color/transparent" android:scrollbars="none" />
<FrameLayout android:layout_width="fill_parent" android:layout_height="55dp"
android:layout_centerHorizontal="true" android:layout_alignParentBottom="true"
android:background="#88000000"/>
<ImageView android:layout_width="fill_parent"
android:layout_height="wrap_content" android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true" android:src="@drawable/phonetop_bg" /> </RelativeLayout>
3. The NewsChannel layout:
<?xml version="1.0" encoding="UTF-8"?> <RelativeLayout xmlns:
android="http://schemas.android.com/apk/res/ android"
android:layout_width="fill_parent" android:layout_height="wrap_content">
<include layout="@layout/news_heading_format"
android:id="@+id/news_heading_header"/>
<ImageView android:id="@+id/news_channel_image" android:layout_width="88dp"
android:layout_height="66dp" android:layout_alignParentLeft="true"
android:layout_below="@id/news_heading_header" android:padding="10dp" />
<TextView android:id="@+id/news_channel_text" android:lines="4"
android:inputType="textMultiLine" android:layout_toRightOf="@id/news_channel_image"
android:layout_below="@id/news_heading_header" android:layout_width="fill_parent"
android:layout_height="wrap_content"/> </RelativeLayout>
When I run the app, the ItemClickListener is never called. However, if NewsChannel were of a simpler type, say, a single ImageView or TextView embedded in the layout, the callback does get called. Any idea what I'm doing wrong? My whole goal is simply to let the activity launched by NewsChannel (not shown) to find out which instance of NewsChannel it was launched from.
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