Android :: Updating Of TextView From Different Thread
Oct 16, 2010
I have an Activity with TextView that I am trying to update from different thread. To do that i pass TextView to the "updater" thread onCreate(..) .. txtStatus = (TextView)this.findViewById(R.id.status): start udp server as separate thread and pass TextView to that thread to print text messages from udp socket
new Thread(new TelemetryServer(txtStatus)).start:
see thread code below
CODE:..................
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Sep 7, 2010
I can't seem to get things to display programatically using text views? I have a main.xml:
CODE:........
Then in my code, I use:
CODE:.......
But the username does not display on the screen. I get just the default text in the XML.
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Apr 9, 2009
Hello everyone, and thanks in advance for the help. What I'm trying to do is a relatively simple task, but one that doesn't seem to be working. What I'm trying to do is display the Orientation X,Y,Z coordinates on the screen in basic TextView boxes. The sensors are constantly updating my Global.myOrientation float array, and then I'm running a Timed thread (I'm very new to threading, so forgive me if it's ugly, but it gets the job done almost). In this thread I just set the value of each TextView's text to the desired value. The problem is that it only seems to work the first time.
It correctly displays whatever my initial data is, but then subsequent runs of the thread do nothign to update the onscreen values when I change the orientation of the phone. LogCat output shows me that inside the run() method, the values of Global.getOrientationX,Y,Z are being updated correctly, and that the right data is being passed to TextView. How can I get around this limitation of TextView being initialized once and then immutable?
Any assistance in fixing this, or providing an alternate solution would be greatly appreciated. Code posted below:
CODE:...............
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Aug 1, 2009
I'm writing some game using OpenGL and have two views : SurfaceView for OGL and TextView for my score. When I try to update score ( using BoardScore.setText("bla"); ) from my activity class all just fine, but when I try to do it from my logic class my app crash. Debugger says something like ViewRoot$CalledFromWrongThreadException (id=830053983760) But I need to update it from logic to know my score.
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Feb 22, 2009
I am developing an application on the Android Platform for my music service (axcid.org). Haven't spent a huge amount of time in Java but could use a bit of help with this code: http://pastebin.com/m5300a4e6
Bit of bad practice in there I know but I haven't spent a ton of time developing Java apps. Anyways the problem:
if (!this.listLoaded) { //holdup this needs it's own thread
//Url load and parse time. // Now we can start a thread for the search
Thread thread = new Thread(this); thread.start();
I need update media list to be called when:
public void run() { // search
String URL = this.getIntent().getExtras().getString("searchurl");
sm.LoadResults(URL+"?android=1"); listLoaded = true; }
is done. However calling it from the thread will crash Android. Did many google searches but found nothing. How can I call updateMediaList when the thread is complete? (from the UI thread)
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Aug 12, 2010
I have an app that uses a TabHost. Several of the Tabs share a common HUD. I am using a service to periodically update those values by calling an AIDL function when ready.
However, since several of the Tabs are using the same HUD I would like to abstract that part out.
I thought about having the HUD.xml use a String resource as it's value and then the abstracted class can update the String resource. However, apparently Android can not update String resources programatically.
The only alternative solution I see would be using SharedPreference.
I have concerns accessing a Database everytime the value is refreshed.
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Jun 11, 2010
How can we update the View of a Home Screen Widget on the onReceive method of AppWidgetProvider?.
I am trying to update the TextView of my Home screen widget but it seems that I cant access the TextView of my AppWidgetProvider on onReceive method.
Here is a sample code of my onReceive
CODE:.................
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Sep 3, 2010
I've got to missing something completely stupid on this one since updating a TextView should be an easy task. I have an Activity class that is an observer of another that receives messages. In my Activity's onCreate I do the following and it works fine.
CODE:..............
However the screen doesn't update. I must be overlooking something...
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Sep 7, 2010
How can I implement a run() method of thread if I create a Thread Global?
I mean If I create a Thread Globally then can I implement its run() method {" public void run()"} anywhere in my Application?
In the run() method I have to write the code to perform some action.
IF I can do it then please can anyone show me briefly how to do it particularly.
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May 21, 2009
I am writing an application in which i need to handle messages between the main thread(the deafult UI related thread) and the user created Gamethread.
The requirement is like this.
An activity(say "Activity_X") is setting the view by "setContentView(some "View_Y")". In "Activity_X" i have implemeted "onCreateOptionsMenu()" and "onOptionsItemSelected()" fucntions for creating menus & a switch case for action to be taken on selecting those menus.Menu has items like "resume/pause/zoom/" .
All action to be take on selecting these menus are implemented in "View_Y" in a separate Gamethread by extending "Thread" class.
So whenever a menu is selected in "Activity_X" i need to send a message to "View_Y". And on receiving this ,a particular action/method should be called in View_Y(GameThread).
How can i achieve this using Handlers?Is there any other way of doing this? Please do share with me some code snippets for these.
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Nov 16, 2010
I want to do something like that. For example, I have a textview with String
Alibaba love Mary so muck. In that String alibaba and Mary have a event to open something but I can't know how to use event for Mary and Alibaba seperately
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May 27, 2010
I have a separate thread running to get data from the internet. After that, I would like to update the ListView in the main thread by calling adapter.notifyDataSetChanged(). But it does not work. Any workaround for that?
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Jul 22, 2009
I want to do the drawing in another thread to speed up the game(it is way to slow right now). I was told to do this but don't quite understand why that would speed things up. Is it GameView that should implement Runnable? Should I make the thread sleep when not drawing? where should I start the thread? package com.android.WWS;
import android.app.Activity; import android.content.Context; import android.graphics.*; import android.os.Bundle; import android.view.SurfaceView; import android.view.KeyEvent; import android.view.View; import android.view.View.OnKeyListener; import java.lang.Runnable; import java.lang.Thread;...................
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Feb 20, 2009
I need to suspend/resume a thread from another thread in the same process. I tried to look into thread apis,but I couldn't figured out a way to achieve this.Can anyone pls point me some references to look or give a tip to do this.
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Dec 28, 2009
Does anyone know how to delete certain texts from a thread in an easy manner instead of having to delete a whole thread??
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Jul 24, 2010
Anyone having trouble with widgets stop updating? Like my clock/calendar/weather/news/pretty much any widget i have stops updating after an hour. So i look at my clock widget two hours later and it is an hour behind. Happens to ALL my widgets.Even the quick turn on/off wifi,bt,gps and such. They just stop updating/showing animation.I have ADW launcher installed. I am wondering if it is that. I do not really want to remove it as i hate the stock 3 button interface at the bottom (why do i need a contacts and phone, just use the phone to look thru contacts, wasted space IMO) and am quite keen on keeping the 5 button.Any ideas? If i power off the phone and turn it back on it's fine again for about an hour. SOmetimes randomly thru the day it will start updating and working fine again then randomly stop again.
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Jul 16, 2010
The Android doc says "Like activities and the other components, services run in the main thread of the application process." Is the main thread here the same thing as UI thread?
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Jul 14, 2010
I have a ListView that contains an Image on the left of two vertically-oriented TextViews using a RelativeLayout. When both TextViews have text it looks fine. Sometimes the TextView on the bottom won't have any text, and the problem is that the entire layout is several pixels above where it should be because it still reserves that space for text when there isn't any making the entire list have annoying blank gaps. I remember seeing an example of where someone made the layout not reserve the space, but I can't remember how he did it.
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Jan 4, 2014
I'm trying to create a textView in the parent activity onActivityResult but the textView does not appear. There is an ImageView that takes up the whole parent activity. I can create a textView and place it, and it should go on top of the imageView?
In the parent class:
[HIGH]private void addClothes(int menuId) {
Intent chooseClothesIntent = new Intent(this, ChooseClothesActivity.class);
chooseClothesIntent.putExtra("menuId", menuId);
startActivityForResult(chooseClothesIntent, 1);
}[/HIGH]
[Code]...
then in my new activity:
[HIGH]@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
try {
ClothingItem ci = mListContents.get(position);
String imagePath = ci.getImagePath();
[Code]...
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May 4, 2013
In my Android application I have to display article title on corresponding category.
I wish to display the output in following format:
[HIGH]Languages Programming --- Category name on Horizontal listview[/HIGH]
If I have to click Languages which means getting the article title for that selected category alone and displaying on Horizontal listview.
[HIGH]Languages Programming
Tamil Engilsh Hindi Telugu[/HIGH]
If I have to click Programming means need to display the :
[HIGH]Languages Programming
Java C C++[/HIGH]
Now my current status is :
I have to run the app and click Languages which means getting the output is :[code]....
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Apr 28, 2010
I have a TextView that I created in the main.xml. In my app.java I am dynamically positioning that TextView based on where the user taps the screen. The problem I am having is that when I call myTextView.setPadding(100,100,0,0), it moves the actual Text of the TextView, but does not move the Colored Background of the TextView.
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Oct 15, 2010
if there are five text in a text view and we want to pass one of them on click event to the next class text view which method i m used on android
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Nov 15, 2010
I have a problem with TextView in Android
I am making an application like Facebook. In m.facebook.com, when I open it I see they do one thing specailly.
(Alice) is writing on (BackStreetBoy1010938920) wall
Because the width of Mobile screen is small so the real message like tha
(Alice) is writing on (BackStreet
Boy10101009393) wall
I guess they use TextView for (BackStreetBoy1010938920) but I can't do like this.
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Jun 3, 2010
Status: ROOT ,,Root Notification Thread (Root Achieved and thread open)
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Apr 1, 2012
In eclipse I need to update my android SDK. I do that and it asks for usernames and passwords for what looks like the brand names that produce android products I never remember getting this before?
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Mar 12, 2010
I have a bluetooth thread started that handles the bluetooth request. Once the connection is made the thread is killed and a Connected Thread is started. Once the Connected Thread is started I want to turn on GPS so I can start feeding the GPS data through the output of the bluetooth. The problem is, I can't get GPS to start in a seperate thread other than the main Activity. I don't want that to happen as I would like to have this run in the background and not be dependent on the main Activity. I have tried turning on the GPS from inside the Connected Thread but that always leads to a RunTimeException. how to get GPS to run in a thread?
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Jul 16, 2009
How can i make TextView editable when i needed.
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Jan 3, 2010
I am attempting to query a database and update information in the appwidget screen based on changes to the database done while in an activity so that when the user exits, the changes are reflected in the widget on the screen.The appwidget is being updated with a broadcast from OnPause() and OnStop() in my primary Activity.Relevant pieces of the code are below.The Toast shows me that the data is correctly being pulled when OnUpdate() is called.But the widget refused to change
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Feb 24, 2010
Is there a way to see what an app developer is updating in an update BEFORE I update an application? I don't want to update my apps really unless I know what is being changed (i.e. a developer putting restrictions on an app that was once free).
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Feb 22, 2010
I am new to Android development and have been working on a simple demo app that needs to update a TextView a few times from an array after a button is clicked. I have read and adapted the code found here to achieve this: http://developer.android.com /resources /articles /timed-ui-updates.html
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