android-listview | 易学教程

Autocomplete textbox highlighting the typed character in the suggestion list

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问题 I have been working on AutoCompleteTextView . I was able to get the suggestion and all in the drop down list as we type. My question is: Can we highlight the typed character in the suggestion drop down list? 回答1: I have achieved the functionality. The solution is as follows: AutoCompleteAdapter.java public class AutoCompleteAdapter extends ArrayAdapter<String> implements Filterable { private ArrayList<String> fullList; private ArrayList<String> mOriginalValues; private ArrayFilter mFilter;

How to view detailed data of a specific list view item

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问题 Let's say i have a list of cities from a country. If the user clicks one of them, i want a new screen to be displayed, with the detailed infos for that list element. Also, that screen will have others buttons ( eg: Write Review, Post Picture ) How can i achieve this ? 回答1: The City class should implement Parcelable . Its toString() method should return the name of the city. (Rather than simply having the city as a String .) When you populate your ListView, use an ArrayAdapter<City> instead of

Listview fragment is getting recreated on pressing backbutton

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I'm using loader in my ListView fragment, and it's getting recreated on pressing "back" button. Can you tell me how to handle this senario? Here is my ListView fragment code. Here I have a boolean variable that I'm setting as true on clicking on list item. but once the back button is pressed onCreateView will get called so the backbutton will be false. public class GTFragment extends SherlockFragment implements LoaderCallbacks<Cursor>{ ListView mTListview = null; GoogleTasksAdapter mGTasksAdapter = null; private SQLiteCursorLoader mTLoader=null; private LoaderManager mTLoaderManager; private

How to let OnClick in ListView's Adapter call Activity's function

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问题 I have an Android application with a ListView in it, the ListView will setup fine but now I want a image in the ListView to be clickable. I do this by using 2 classes, the Activity class (parent) and an ArrayAdapter to fill the list. In the ArrayAdapter I implement a OnClickListener for the image in the list that I want to be clickable. So far it all works. But now I want to run a function from the activity class when the onClick, for the image in the list, is run but I do not know how. Below

Android ExpandableListView : set background color of selected item on click

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I am trying to set a background color for item when the user click on a child item in my expandableListView . Here is the code : expListView.setOnChildClickListener(new OnChildClickListener() { @Override public boolean onChildClick(ExpandableListView parent, View v, final int groupPosition, final int childPosition, long id) { AlertDialog.Builder builder = new AlertDialog.Builder(New_annonce_act_step2.this); builder.setMessage("Vous avez choisi la catégorie " +listDataChild.get(listDataHeader.get(groupPosition)).get(childPosition) +", Continuer ?") .setPositiveButton("Oui", new DialogInterface

ListView item coloring on selection not working properly in android API version 8/9

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I'm currently using a ListView to display a sort of items. I've implemented an action mode to select multiple items and to delete massively that works well in android 4.x. But when I tried with API version 8 or 9 (android 2.2.x/2.3.x), selection works internally as expected but row items are colored randomly. If user selects first row, internally first row is selected, but row number 4 is colored. When I click another row, this row and first one is colored. It's a strange behaviour which I expect to work normally as on 4.x devices. Long-click overriding to activate action mode and check long

listview display the data from database in android

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I am new to android. I would like to know that how to display the data from database in listview. It does not add a data to database.I just display whatever we store in database.please help me to achieve this...Thanks in advance... Saurav Sharma Use these classes this may help you for database creation package com.example.grapes; import java.util.ArrayList; import java.util.List; import android.content.ContentValues; import android.content.Context; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteOpenHelper; public class

Android ListView Background not painted

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I'm working on the UI for an application I'm writing but I've hit a bit of a wall and wonder if there is anyone out there can give me some advice. I've created a ViewFlipper to slide between two ListViews. It works well enough so far however there seems to be an issue with drawing. The ListView has a background, the rows are transparent. When I select a row and the slide to the next list occurs the rows turn (I think) transparent, then the ListView background is painted once the animation stops. What is odd however is that the space below the rows do not turn transparent. It's a bit hard to

List view set a custom ripple selector

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问题 I'm trying to use a list view control on Lollipop under the following conditions: The theme type is the default Theme.Material (dark theme). The list view is contained inside of larger layout which has a white background. The list view should have a list selector that appears with the white background. NOTE: I am forced to use a custom list selector color because if I use a white background, the dark material themed selector uses the theme's colorControlHighlight color for the ripple, which

How to pull List of installed App name, package name and icon drawable

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I'm trying to figure out how i can implement this code into my existing source code. Currently i have some source that displays a list-view of all the installed apps and on-click will send intent to the application. I'm needing some support on how to pull the icon and add this into the list view. Any help, source code editing, links, etc would help me resolve this. Thank you ListInstalledActivitiesActivity public class ListInstalledActivitiesActivity extends ListActivity { // Buffer used to store package and class information, and also determine the number of installed activities private