Android :: Use A Listview Without Extending ListActivity In Class?
Nov 9, 2010
I have an application with various tabs (on a tabhost), each tab is an activity that extends activity, and haves some textfields and things on it
now i need that my tabs have inside a listview, but in the example from android developer guide says that you have to extend ListActivity and not Activity
basically i need to merge these two tutorials:
http://developer.android.com/resources/tutorials/views/hello-listview.html
http://developer.android.com/resources/tutorials/views/hello-tabwidget.html
i want to know how can i use a listview without extending listactivity on my class
someone knows? code...
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Jul 28, 2009
I was experimenting with extending the Intent class but don't seem to make it work properly. I am wondering if extending is even possible. Here is the snippets.
Code for custom intent: Code...
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Nov 1, 2010
In a book I read, the author suggests to extend the application class in order to have a place to be used as a singleton. In this way, it is easy to make some initialization stuff in it onCreate().Now my question: if my application has also some broadcast receivers declared in the manifest, and the application was not started explicitly, or it was but then the os reclaimed it resources back, what will be happening if the broadcast receiver is triggered? Will the onCreate of the application class be called first?
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Aug 15, 2009
I'm new to android development so sorry if this is a stupid question.
The SurfaceView doesn't seam to have an onMotionEvent to override. Is there anyway to capture onMotionEvents with a class extending SurfaceView?
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Apr 19, 2009
Can i call method of Listactivity from Activity class? I have creates Intent object of myListActivity class and called startIntent() from myActivity class.
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Jun 30, 2009
I create a ListView in my activity and set its ChoiceMode to CHOICE_MODE_SINGLE, I also set its layout to simple_list_item_single_choice. But when i click on it onItemSelected() is never called and getCheckedItemPosition() returns -1. Why? the sample List10.java of ApiDemos uses ListActivity works well which just set the same as I done in my app. Any ideas?
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Jan 13, 2010
I want to create a custom list view in my application. I want it to lay over the top of the application screen, with portions of the screen not filled by the listview showing the underlying application. I've been reading about ListActivity, how it can be started to handle item selected callbacks. I've also read about people simply inserting onClick handlers into the listview as it is drawn. I'm trying to decide the best way to proceed. Is it "dirty" to attach onClick handlers to the rows of a listview? It doesn't seem like the best approach, for instance, it only handles Touch Mode, not the DPAD clicks. This approach doesn't seem like what the architects had in mind. On the other hand, I don't see a good way that I can start a list activity and still have access to all the application variables I need. Do I pass the application in the context and refer back to it from even handlers after casting the context back to it's original class?
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Dec 3, 2009
I am starting with ListActivity.
I saw apidemos and saw that it is based on ListActivity. My doubt is, in my first screen I need a few labels and texts under that a list. How to approach this ? I cant do a setContentlayut(R.id.main) if my activity extends ListActivity, no ?
more over I found the tutorial posted in the forums for ListActivity a bit outdated. Where is 1.5 / 1.6 based tutorials ? because I am new, it is taking too much time to correct 1.1 codes.
lastly, if i have a todo type appfor adding deleting and deleting, should i use 3 different layouts or activities ?
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Feb 11, 2010
I'm new to Android, and I really need to do it this way (I've considered doing it in another Activity), but can anyone show me a simple code (just the onCreate method) that can do Listview without ListActivity?
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Jul 28, 2010
Actually the question in subject... How to configure ListView of ListActivity via xml, for example padding, dividerHeight etc...
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Aug 13, 2009
I have some problems when creating a ListActivity.
I have a listview and some other widgets and my listview is filled with a custom adapter.
You can see the images of this activity here:
http://www.grabup.com/uploads/ecd0d0eeb7b947e98b2e0d6c1be5478f.png?di...
Now the problem is. I have a scrollview and all the other views and widgets are placed inside of it. As you can see on the image, I don't see all of my 6 comments (that is the list). When i don't place the scrollview the height of the list is perfect (i have set android:layout_height to wrap_content (to my listview and parent LinearLayout). This is perfect but I have other widgets under the list and when the list reaches the bottom of the screen I can't to scroll to view my other widgets..
How can I fix this? I can set the height of the linearlayout manually but the problem is that the height doesnt has to be the same all the time (it loads the commens from my web service).. It has to fit the height of all the comments (like wrap_content normally does..)
Here is a part of the code with the layout and listview..
CODE:............................
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Aug 17, 2010
I want to build my own custom view which should look like the Crysis-GUI.At first I designed a XML-based Layout and made it visible via the setContentView(int resid)-Method. Worked pretty well.But now I wan't to go a step further and draw in my Layout. So I created a new Class, let it extend View and overrode the onDraw()-Method. So far so good.But how can I still use my XML-Layout? I can't do setContentView anymore, so how could the same effect be achieved?
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Aug 7, 2010
In Android, what functionality do ListActivity and ListView provide beyond a regular Activity and View?
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Oct 29, 2010
I can't seem to get a customized divider, using a Drawable I've defined, to work when using a ListActivity and not creating a custom ListView. It almost seems like when the VM creates its own ListView for me, with the ListActivity, it uses a theme with the default divider provided; and if I try to provide one, no dividers appear in the ListView at all.
I know that I can create a custom ListView using XML and define android:divider on that ListView, and this does recognize my custom divider Drawable. But I would prefer to just let the ListActivity create its own ListView, if I can figure out how to get my own divider working on it.
Here's the code I'm using now:
CODE:............
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Oct 3, 2010
I have a class A which is responsible for fetching data from web services in android and i have a class B which is responsible for creating and rendering List View in android
Now how can i populate data on List View once the data is fetched successfully.
well i have following options but which one is better .. (if someone has anyother then i don't mind)
1) Create an intent of Class B and
pass the data that need to be
populated
2) Creating a static method int Class
B which will accept the data as an
argument and call setListAdapter
in class B i have used Holder Patter to create ListActivity. ( for reference List14.java in samples of Android )
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Jul 7, 2010
I'm creating a new class, using eclipse "New Java Class" dialog box. I can write the superclass I want (I can't find using "browse" button), but I can't write or select an interface to implement. I click "add" but ther is nothing to select. What I'm doing wrong?
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Jul 14, 2010
I'm just getting into Android development, and I have a question about communicating between a receiver class and an activity class. I'm very new to JAVA and Android so I hope I don't sound too stupid. I'm developing an application where I intercept an SMS message and then based on various elements of that SMS I might delete it once it's been saved to the inbox. I have a receiver class that intercepts the txt message, and I am also able to delete messages from my inbox with code in the activity class using a button at the moment. The problem I have is communicating between the receiver class and the activity class where the code to delete a message resides. I tried putting that code directly into the receiver class but as I'm sure most of you already know the BroadcastReceiver class doesn't seem to support what I need to delete messages. I've been searching for an answer to this for a while, but haven't been able to find anything. Honestly I'm not sure I know enough about JAVA and Android to even recognize a solution if I saw it.
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Jun 27, 2010
What I want to do, is be able to access the object neoApi inside the Neoseeker class, from its inner class RunningTimer. Now, in my code, you can see what I would think to work, but when I run my application, nothing pops up. Nothing inside my TextView, no Toast, nothing at all. How can I remedy this?
package com.neoseeker.android.app;
import java.util.Timer;
import java.util.TimerTask;
import org.json.JSONObject;
import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;.......................
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Sep 8, 2010
I'm new to Java and android development. In my application I need data which is accessible for a few activities. I've read that a good solution is to use Application class for this. So I use it like this:
public class MyApplication extends Application {
private String str;
public String getStr(){
return str;
}
public void setStr(String s){
str = s;
}
}
and I can access this variable from activity like this:........................................
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Oct 8, 2010
I have just started android. I just want to know that how can i call activity class from other java class. i just want to pass class object to activity class.
public class GsonParser extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
MagazineThread thread=new MagazineThread();
thread.start();
}
public GsonParser(JsonMagazineParser Obj)
{
}
}
and i am just doing like from other class. GsonParser obj=new GsonParser(this);passing obj to activity class.how can i achieve that.
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Apr 23, 2010
In my app in one package there are some classes. from those classes i want to run one class that is the Gps functionality class. i want to run that class in background. how i do it, i don't know. i am not able to make it solve from any document. if anybody knows the way to solve it please me by run a "hello world" app in the background. i am not able to solve this problem by going through document.
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Jul 20, 2010
I'm building a small Android application, but this is more of a Java question than an android question. Looking through the tutorials there are lines that look like: startService(new Intent(this, MyService.class));
What exactly does the "MyService.class" field represent? Is that just a reference to the class for a template?
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May 19, 2009
I made a Dialog Class with it's view classI want to pop up the dialog when I got some packets from network. so I made a Thread which parses packets and then I made if clause in Run() method There is no problem with parsing packet but when I enter "if clause" and call showDialog() I got Error message
Is there anyone who knows how to pop up a dialog from different thread?
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Nov 3, 2009
I'm just getting into Android development, coming from a mostly ruby and scheme with some Java background. For a first project, I decided to try and build a stopwatch.
The included Chronometer widget doesn't quite have the functionality I wanted, so I copied its code into my own package. However, when I try to build it, I get the following error:
CODE:...............
If I remove the RemotableViewMethod annotation, the code compiles, but crashes with an IllegalStateException as soon as I call a method on the widget, as seen in this stacktrace: http://www.pastebin.org/50243 .
Looking through the android source, you can see stock widgets using the RemotableViewMethod all over the place, but for some reason, my code can't.
So, my question is this: What can I do to enable the RemotableViewMethod annotation in my custom widgets? Is there something I should be doing differently in order to code custom widgets?
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May 8, 2010
I have trouble (example<http://groups.google.com/group/android-developers/browse_thread/threa...>) wrapping my head around styles/themes. Can somebody help me or point me to actual documentation?
Let's say I have a drawable that I want to use as the background of a layout:
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle>
<gradient android:startColor="#9F9FA4" android:endColor="#66FFFFFF" android:angle="270" /> </shape>
Now I want to have a dark and a light theme. Depending on the chosen theme I want to have a different value for startColor and endColor. How do I do that? I am aware of extending themes, but what do I put into the items? How do I reference those new values then?
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Jul 8, 2009
I want to extend the built in media player, however when i grab the sources, there are a lot of external dependencies that are hard to track down. Is there any way to get the source and the dependencies so that i can have it as a standalone and then extend it, is this even possible?
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Oct 14, 2009
I know this question was asked couple of times in this list, but I haven't found any answer in archives, and last time this subject was debated almost a year ago. Does anyone knows is it now possible to somehow extend contacts functionality (for example: add custom field for VoIP phone number in which case user can use it to start custom activity for voip)? What are Contacts.ExtensionsColumns for?
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Sep 19, 2010
I get a result as http://i3.6.cn/cvbnm/e1/71/e9/19008bd7258eaf858be73dc6431b1f8b.jpg,
i want to get two tab,could you help me? Code...
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Nov 24, 2010
Ultimately I wish to produce a compressive Contact Manager with some specific features. I thought it would be good to experiment by extending Contact. So using git I checked out froyo-release and tried to build it. That didn't work so well as it contains things like
Suppress the internal stuff under the assumption that I really don't need it. Start with a toy Contact Manager and implement (reinvent) everything.
My guess is that I am going about this incorrectly. "I want that third alternative" --kirk.
Just for completeness, the new special behavior is to provide an action list for a contact based on the types of that entities data.
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Oct 31, 2010
Im using the NotePad example as a base for an application. This binds a ListActivity to a Provider.
Its perfect, except it uses SimpleCursorAdaptor, which means the list only binds to and displays one item per row. I want it to display two items, both bound the Provider. Or more accurately display the text from one Content Provider field and an icon which depends on the value of a different field.
This sounds like a pretty simple thing to do, a very slight modification to the NotePad application. Trouble is, I have no idea on *how* to do it. I really need a starting point, and "approach" to use.
So far I have tried (unsuccessfully):
* Hand populating the ListView by reading in the Provider data and populating an array in OnCreate. This works, except as the data is not bound the List does not update when I add an item.
* Extending SimpleCursorAdapter with a custom getViewBinder. Could still only bind to a single column.
* Building my own ListAdaptor. Couldn't get this to work.
* Concatenating both fileds together and "parsing" 2 fields into 1 field read/write.
The next thing I will try is extremely tacky running two separate simpleCursorAdaptors in two views in a Linear Layout, fudged so the row height is identical, and duplicate the logic.
I say this only to show that I really, really have tried.
How I can create a custom CursorAdaptor which binds to two fields instead of just one like SimpleCursorAdapter?
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