Android :: Change Control To Main From New Thread?
Aug 20, 2009I was define a new thread for a task, but when task is complete, I must to refresh my listview, however I will get the error for just can use main thread to change view,
View 5 Replies
View 5 Replies
General :: How To Change Main UI Thread Priority
Apr 26, 2012I read somewhere that iPhone UI is so smooth because the thread which renders the UI has the REALTIME priority... so is that possible to mod android's UI thread priority?
View 2 Replies View RelatedAndroid : Handle Messages Between The Main Thread(the Deafult UI Related Thread) And The User Created Gamethread
May 21, 2009I 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.
Android :: Update ListView In Main Thread From Another Thread
May 27, 2010I 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?
View 1 Replies View RelatedAndroid :: Main Thread The Same As UI Thread?
Jul 16, 2010The 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?
View 3 Replies View RelatedAndroid :: Is There Only 1 Main UI Thread Per App Process?
Jul 21, 2010Are the UI threads for each Activity and Service in an app separate threads, or is there actually 1 underlying UI thread per app that processes the UI message queue for each Activity and Service?
View 2 Replies View RelatedAndroid :: Running Tests In Main Thread?
Feb 19, 2010Can someone advise the am command (for adb shell) to run junit tests in the main thread please? The following shows onStart etc running in the test runner thread. am instrument -w -e class co.uk.telesense. tests.MyTest co.uk.telesense.tests/android.test.InstrumentationTestRunner Ewan Benfield ttp://www.telesense.co .uk tel: 0845 643 5691 (+44 845 643 5691) mob: +44 (0) 77859 26477
View 2 Replies View RelatedAndroid :: Callbacks Occur On Main (UI) Thread?
Oct 12, 2010There are a lot of Android SDK APIs where callback handlers are registered. For a concrete example, with MediaPlayer you can set an onCompletionListener callback. Will these callbacks be called from the main (UI) thread? If the answer is "it depends", then I'm looking for some general rules for what callbacks will be called from the main thread versus another thread. The SDK documentation doesn't seem to spell it out. (Maybe I missed it) It seems important to know, because if I'm guaranteed main thread callbacks, then I can skip some thread synchronization on data shared between different places in code. If I'm forced to be pessimistic out of ignorance, then I have to write extra synch block code and worry about deadlocks, data integrity, and reduced performance.
View 4 Replies View RelatedAndroid :: Method Invoked On Main UI Thread
Jul 19, 2010Say that a user clicks on a Button. Is the resulting onClick() function invoked on the main UI thread of the activity?
View 1 Replies View RelatedAndroid :: Using Cancel Method From Toast In Main UI Thread
Nov 16, 2010I want to cancel a Toast to show the next one. This is the description of the behavious I want, when I select one element in the menu i display a toast from the actuel menu element, but if i switch from one element to an other quickly i'm creating a list of Toast to display. So i need to cancel the previous one but i never succed. This is an extract of my code: public class MainActivity extends TabActivity
private Toast toast; private String toastMsg;
private void toast(){ if(toast!=null){ toast.cancel(); } toast = Toast.makeText(MainActivity.this, toastMsg,Toast.LENGTH_SHORT);
toast.show(); } }
Android :: Update UI In Main Activity Through Handler In Thread
May 9, 2010I try to make several connection in a class and update the multiple progressbar in the main screen. But I've got the following error trying to use thread in android : Code: 05-06 13:13:11.092: ERROR/ConnectionManager(22854): ERROR:Can't create handler inside thread that has not called Looper.prepare() Here is a small part of my code in the main Activity.
public class Act_Main extends ListActivity
{ private ConnectionManager cm;
public void onCreate(Bundle savedInstanceState)
{ super.onCreate(savedInstanceState);
// Set up the window layout
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
setContentView(R.layout.main);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title); }
public void startConnection() { ......
Android :: Update View Only From Application Main Thread
Oct 19, 2010Curious to know the reason behind not allowing updating UI elements from background thread in Android. Will main thread does something more (probably interacting with framework) after updating the UI elements so that changes can be seen on the screen? Is it the same case with other GUI tool kits?
View 1 Replies View RelatedAndroid :: Call Not Suspend Main (Calling) Thread
Feb 18, 2010Hi, I've noticed that on android, the call to pthread_join does not suspend the calling thread. I've a number (6) of new thread created using pthread_create and pthread_join is called on each thread. But It does not suspend the main (calling) thread. I believe this relates to the port of pthread lib to android.
View 2 Replies View RelatedExiting Main Thread
Feb 7, 2014I am trying to connect to a database, and I understand that it has to be outside of the main thread but i thought that this is what my code was doing...apparently not because i keep getting the error: android.os.NetworkOnMainThreadException.
package com.example.dbtesting;
import java.sql.*;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
[code]....
Android :: Making Broadcast Receiver Post Of UI / Main Thread
Jun 10, 2010Are we guaranteed that Application.onCreate() runs in the UI/main thread? I want to assume so but I can't find any information to make me 100 % sure. When I receive a broadcast I want to post a message onto the UI/main thread. Currently I've added a function in my Application class to return a handler (created in it's onCreate), is this a good solution? If not, what would be a better solution?
View 3 Replies View RelatedAndroid :: How To Update View Object On Main Thread By Background?
Mar 3, 2009My purpose is very simple : each 1second, I want to redraw an object on different place on background. I do not know where my error on this code below. Here is my code:
public class My_View extends View{ private Bitmap mBackground_img;
private Drawable mMoveObject; private int mObjectw,mObjecth; private int Dx,Dy;
private Handler myHandler = new Handler(); private long lasttime;
public My_View(Context context,AttributeSet ats,int ds) {
super(context,ats,ds); init(context);
} public My_View(Context context,AttributeSet ats) { super(context,ats);
init(context); } public My_View(Context context) { super(context);
init(context); } public void change() { invalidate();
} private void init(Context context) {
Resources res = context.getResources();
mMoveObject = res.getDrawable (R.drawable.lander_firing);
mBackground_img = BitmapFactory.decodeResource(res, R.drawable.my_pic);
mObjectw = mMoveObject.getIntrinsicWidth();
mObjecth = mMoveObject.getIntrinsicHeight();
Dx = Dy = 0; lasttime = System.currentTimeMillis() + 1000;
Thread mthread = new Thread(null,doBackground,"Background");
mthread.start(); } private Runnable doBackground = new Runnable() {
public void run() { long now = System.currentTimeMillis();
if(lasttime < now ) { Dx = Dx + 10; Dy = Dy + 10;
lasttime = now + 1000; myHandler.post(change_view);
} } }; private Runnable change_view = new Runnable() {
public void run() { change();
} };
@Override public void onDraw(Canvas canvas) {
canvas.drawBitmap(mBackground_img,0 ,0 , null);
mMoveObject.setBounds(Dx, Dy, Dx+mObjectw, Dy+mObjecth);
mMoveObject.draw(canvas);
} }
Android :: Start Activity From UncaughtExceptionHandler If Main Thread Crashed?
Feb 8, 2010I am trying to start an error-reporting activty if unhandled exception detected. The problem is with exceptions thrown from main thread. Is there any way to start an activity if main thread crashed?
View 3 Replies View RelatedAndroid :: Handler Fails To Deliver Message / Run Able To Main Thread
Feb 18, 2010I have an app with a two threads - main and data loader. When data loader finishes it posts a Runnable object to the main thread (as described in the DevGuide), but it never gets delivered and run. Here's the basic code:
class MyApp extends Application{
public void onCreate()
{LoaderThread t = new LoaderThread();
t.start(); }
private class LoaderThread extends Thread {
public void run()
{ SystemClock.sleep(2000);
boolean res = m_handler.post(m_runnable);
if(res)
Log.d(TAG, "Posted Runnable"); } ............
Android :: Pausing Main Game Thread Until Activity Started
Aug 13, 2010In my game when the user completes a stage, I want the main game thread to pause/sleep/wait and a new activity to be launched called StageClear that displays information about points scored etc. After this has been displayed and the user has pressed continue I want the original game thread to resume where it left off. I have tried to implement this but have so far been unsuccessful, probably because I'm new to dealing with multiple threads and also the idea of synchronizing them. I most recently tried to implement a shared package-visible object that could notify after wait was called on itself, but I am getting errors in eclipse so it won't even compile, I think because though the object is declared public in an inner class, it cannot be seen or recognised by my activity elsewhere in a file in the package. I have already built both activities but my issue is getting the main game one to launch the other, and pause whilst it waits for this activity to finish, before the main game thread continues execution.
View 1 Replies View RelatedAndroid :: Dialog Activity To Return Before Continuing Executing Of Main Thread
May 22, 2010How would I force the current thread to wait until another has finished before continuing. In my program the user selects a MODE from an AlertDialog, I want to halt executing of the program before continuing as the mode holds important configuration for the gameplay.
new AlertDialog.Builder(this)
.setItems(R.array.game_modes, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case 0:
setMode(TRAINING_MODE);
case 1:
setMode(QUIZ_MODE);
default:
setMode(TRAINING_MODE);
break; ............
//continue loading the rest of onCreate();
contineOnCreate(); } })
.create().show();
If this is impossible can anyone give a possible solution?
Android :: Transferring Control From Non UI To Ui Thread
Jul 17, 2010I have started a service that works in background and i need to show a dialog box containing "Yes" and "No" buttons.But when i try to show the Dialog box from service it give me below exception and not even show dialog box. *"Exception is here.java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()"
View 9 Replies View RelatedMotorola Droid :: Stock Messaging - Takes To Main Text Message Window Rather Than Actual Thread To Reply To Person
Sep 8, 2010Since I got the original 2.2 update for my Droid, whenever I get a new text message and slide down the notification bar and select the new message, it takes me to the main text message window rather than the actual thread to reply to the person. It is really annoying because it requires an extra step. I figured it would be fixed with the second 2.2 update but it didn't. I called Verizon and they called Motorola and nobody knew of the problem so they shipped me out a new phone and it still does it! I am not sure if I am the only one experiencing this or if its normal. It doesn't do it 100% of the time but closer to 90% probably.
View 1 Replies View RelatedAndroid : How Can I Change Main / Launch Activity?
Jul 13, 2010I think I already know the answer to this, but I just wanted to confirm (I think no horrible ramifications)...
View 5 Replies View RelatedAndroid :: Preference Change Notifying Main Activity
Nov 13, 2009I think I've missed something in how Android is supposed to work! I have the main Activity with a menu option that opens the preferences screen. What I need is a way for any changes that were made to be communicated back to the main Activity as soon as the preference is activated. At the moment the only way I could get it working is by using the intent data that gets sent back when the prefs activity closes but this isn't really enough. The reason why it needs to be instantaneous is that one of the preferences is a 'Clear cache' button, so I would like the data to be deleted when the user requests it and no later!
View 4 Replies View RelatedAndroid :: Recent Apps Change In 2.2 / Brings Main Activity To Foreground
Jul 24, 2010The recent apps display seems to function quite differently from earlier versions on 2.2. Try the following for instance: 1) Open an app 2) Click on something that takes you to another activity in the same app 3) Press the home button 4) Press and hold the home button to get the recent list of apps - select the app you chose in step 1 5) You'll be taken to whatever activity in that app is specified as the main/launcher Activity, rather than the Activity on top of the stack (as it was previously) It makes it appear to the user that the application has exited when the home screen button was pressed. I don't have my app set to clear history on launch or anything like that, and I can replicate it on the emulator and with any app on my device (Contacts, Gmail, Engadget etc) Anyone else notice this? Anyone know any reason for the changes? I must admit I quite dislike the new method.
View 10 Replies View RelatedHTC Incredible :: Master / Main Contact Name (Can Change?)
Aug 4, 2010I have two email addresses for a particular contact. One is to email their phone and the other is the real email address. I want keep them as separate Google contact entries.But the problem is that the name that the linking software has chosen to represent the account is the one for the SMS-email (e.g. "Bob Smith SMS Email").I want the name that I see in various contact lists to just be "Bob Smith".The thing is that the account with the normal email and phone number is the one set as the default, so I know the Droid is not picking up the name of the default account and using it as the "main" name.I remember once, when I was linking and unlinking accounts, that it asked me what name to use as the main name.But I can't figure out how to get back to that.
View 4 Replies View RelatedGeneral :: How To Change Main Icon On Statue Bar
Nov 22, 2013how can i change the main icon on my statue bar i tried the xtheme engine and other xposed apps but it changes only the wifi and the battry and other things ... i am locking for change my signals icons .. .i have dous phone i want to change them both .. is there any way to change them and is there a tweek to remove the sim icon ?
View 2 Replies View RelatedHTC Desire :: Get Scrolling Calendar - Change Main Appearance
Jun 25, 2010I have no desire to root my desire. However, wandering around here and asking a lot of stupid questions and getting most answered with a great deal of patience has led me to wonder: 1) Can you get scrolling calendars other than the Sense one, without rooting? (I can't find any - I like the CalWidget big one, but it wont scroll). 2) Can you do anything to the main appearance other than change the background, without rooting? I've seen talk about the app 'OpenHome' - but on the market it's marked with low stars as buggy. 3) On 2 - can you remove the names from below the icons? Change the icons (e.g. with a theme) - without putting things into folders? 4) Can you remove options without rooting? E.g. my photo sharing (I've returned to the basic app, as gallery had a few bugs, e.g. with the camera) has 12 options to share (I had more, but I uninstalled different twitter apps and got rid of a few - I still have two facebook shares, peep and tridroid etc), which means scrolling through to find. On the gallery app, which had no scroll for sharing options, some were pushed off the screen. Is there a way to limit it just to the ones I'd use?
View 1 Replies View RelatedAndroid : How To Change Whats On Power Control Widget?
Nov 20, 2010i want to add wireless network to my power control and remove bluetooth since i dont use it. how the heck do i do this?
View 5 Replies View RelatedMotorola Droid :: How To Change Main Gmail Account Without Doing Factory Reset?
Jan 5, 2010I know this could be done on earlier phones, but I can't find a way to change my main gmail account on the Droid (Android 2.01) without doing a factory reset. Anyone know how to do this?If a factory reset is the only way, what's the best way to do a backup/restore?
View 14 Replies View Related