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• Wait for inline thread to complete before moving to next method...

  - by Tyler

  Hello, I have an android app where I am doing the following: private void onCreate() { final ProgressDialog dialog = ProgressDialog.show(this, "Please wait..", "Doing stuff..", true); new Thread() { public void run() { //do some serious stuff... dialog.dismiss(); } }.start(); stepTwo(); } And I would like to ensure that my thread is complete before stepTwo(); is called. How can I do this? Thanks!

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• Invoking activity that is located in a jar

  - by Sebi

  hi i tried to invoke another activity from my main acitivty which is located in a jar file. Class clazz = Class.forName(getPackageName() + "." + getActivityName()); startActivity(new Intent(this, clazz)); Im doing it this way because i only know the name of the class. This works fine but unfortunately, all resource files can't be found while loading the activity from the jar file. at the first occurence of loading a res file there is a ResourceNotFoundException: 04-30 11:18:46.944: ERROR/AndroidRuntime(1749): Caused by: android.content.res.Resources$NotFoundException: Resource ID #0x7f040006 any hints for that? thanks!

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• SQLiteOpenHelper problem

  - by Harsha M V

  I have created SQLiteOpenHelper class to help me open write the database. but i am not able to invoke it from the main.java activity I have created an Class which extends the Database Helper which is stored at /Messaging/src/com/v3/messaging/DatabaseHelper.java Code: http://pastebin.com/Z5qp32xu now i have this class called Main.java which will be the first activity on the launch of the application. But how can i make the DatabaseHelper.java run just to create the database but still be at the Main.java file. The database should be created with the tables only when the db or the tables dont exist. Main.java code: http://pastebin.com/LVFVuhA0 Now when i run the program. the database is not being created :( I am trying to learn Android. So please excuse me if i forgot to tell something.

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• Is it acceptable to design my GLSurfaceView as a main control class?

  - by Omega

  I'm trying to structure a game I'm making in Android so that I have a sound, flexible design. Right now I'm looking at where I can tie my games rules engine and graphics engine together and what should be in between them. At a glance, I've been eying my implementation of GLSurfaceView, where various screen events are captured. My rationale would be to create an instance of my game engine and graphics engine here and receive events and state changes to trigger updates of either where applicable. Further to this, in the future, the GLSurfaceView implementation could also store stubs for players during a network game and implementations of computer opponents and dispatch them appropriately. Does this seem like a sensible design? Are there any kinds of improvements I can make? Thanks for any input!

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• How to generate R.java by a manual on Linux platform

  - by user305787

  I have a question. I am developing android applcation on Linux platform because i have to make a system.img with a application. When adding a drawable resource and building the project with mm command, i met a below error. "cannot find symbol R.drawable.icon_send_type" At above error, the icon_send_type is the added resource. This error occurred because the mm command did not generate R.java. So, i want to know how to generate R.java by a manual on Linux platform. Please help me.

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• Call an AsyncTask inside a Thread

  - by Arun

  I am working in an android application and I want to call an AsyncTask from my UI main thread. For that I want to call my AsyncTask from a thread. This is the method that I call from my main UI thread. This is working correctly CommonAysnk mobjCommonAysnk = new CommonAysnk(this, 1); mobjCommonAysnk.execute(); CommonAysnk is my AsyncTask class.I want to pass my activity and an integer parameter to the AsyncTask constructor. How can I call this from a thread as shown below method. Thread t = new Thread() { public void run() { try { CommonAysnk mobjCommonAysnk = new CommonAysnk(this, 1); mobjCommonAysnk.execute(); } catch (Exception ex) { }}}; t.start(); When I tried to call it from a Thread and I am not able to pass the activity parameter correctly. How can we sole this. Thanks

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• Print from cloud print

  - by Saikat

  I have a project in jquery mobile and htmnl5. Now I want to print my page from a android device. I found a code which can print with cloud printing. Code are below. var gadget = new cloudprint.Gadget(); gadget.openPrintDialog(); gadget.setPrintDocument("url", "JPG Image","https://www.google.com/landing/cloudprint/testpage.pdf", ""); But the main problem is that I am unable to use my particular area to be print. Please help me. This example is for a static path like google in the above example. But I want to use my own print area from my code.

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• Calling finish() After Starting a New Activity

  - by stormin986

  The first Activity that loads in my application is an initialization activity, and once complete it loads a new Activity. I want to ensure if the user presses 'Back' they go straight to the Launcher, and not the initialization screen. Side note, is this even the best approach, or would this be better done with some kind of Intent Flag? Is it correct to call finish() after calling startActivity() on the new activity? onCreate() { ... startActivity(new Intent(this, NextActivity.class)); finish(); ... } I'm still taking in the whole 'Message Queue' method of doing things in Android, and my assumption is that calling startActivity() and then finish() from my first Activity's onCreate() will log each respective message in the message queue, but finish execution of onCreate() before moving on to starting the next Activity and finishing my first one. Is this a correct understanding?

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• Activity.findViewById returning null sporadically

  - by adstro

  From the crash logs that I am getting from the Android market, I can see that some of my users are getting Force Closes caused by NullPointerExceptions when my code tries to access views that are in my application. In one example, my activity makes a call to findViewById() in onCreate() after I call setContentView(). I get an NPE when I try to access the view after the call to findViewById() (still in onCreate). What has me really scratching my head is that this does not happen all of the time (in fact most of the time the code acts as I would expect), but enough to have me concerned. I could add code to always check for null and avoid the NPE, but I would like to understand what could be causing the sporadic behavior. Does anyone know what could be causing this?

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• Returning an array from an activity

  - by Boardy

  I am currently working on an android project and I want to be able to startActivityForResult so that I can return an array of. The array is an ArrayList<Spanned> lets say its called myArray. From what I've read I can't return an array directly from the activty using the set result so I was thinking that once the array has added all the data to the array, I can then call the toString function on it, i.e. myArray.toString(). If I do this, I have no idea how I can then convert this back into the original ArrayList<Spanned>. Thanks for any help you can provide.

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• Mobile web apps - Is this the right approach?

  - by Pasta

  I need to build a cross platform mobile app (iphone, android, etc). The app is for a company like a cellular operator (Tmobile, ATT). The app needs to do the following: Show previous bills (cached so that it does not have to download everytime) Need an internet connection to download newer bills, view recent data, etc. Can I build a mobile web app to handle this? I understand that there is offline storage and iPhone has good support for web apps (full screen, good icons, offline, etc). Will a web app be the best approach to take as the app requires to be online? The app will not be used by lots of people, just customers of the website who don't want to use an existing website. We are all web developers and a mobile web app looks like the best way to approach this.

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• Touchscreen sensitivity

  - by Aashish J Kumar

  I'm trying to make an android app only for tablets, which will draw the lines as and where the user touches the screen. It is very simple and there are lot more apps like this. I have a doubt regarding the touch-screen technology. Is there any possibility that if the user touch the screen soft then the lines will be dull and if the user touch the screen harder then the lines drawn will be thicker? Is it even possible to do such things in tablet? I don't have info about the hardware and technology used in tablets, please guide me with a valid answers and please refer me to any blogs or docs which says about the touch sense technology. Thank you

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• How to enable ListView overscroll in HTC One X (may be all htc devices)?

  - by smeghead

  I have a listview in my app, and in my Xoom, and Galaxy S2, you get the normal glow effect when you overscroll. But in HTC One X, it doesn't show any overscroll behaviour. All the HTC apps have an accordion style overscroll behaviour. Do they use some custom listview? In any case, how do I show some sort of overscroll effect in HTC phones? Also, is there some ListView class out there, that implements overscroll effects on all phones (doesn't have to be the same effect). Some Context: The phones are on Android 4.0.3, and Xoom is on 4.0.4. The app is using the Holo Light theme. The min/target API level (as well as the Project API level) is set to 15.

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• Handling orientation changes yourself

  - by synic

  From the documentation regarding the android:configChanges='orientation' attribute of the activity tag in the manifest: Note: Using this attribute should be avoided and used only as a last-resort. Please read Handling Runtime Changes for more information about how to properly handle a restart due to a configuration change. Why does it say this? In the case of threads and networking requests via a service API library, a request could be made with a reference to the original Activity, and then an orientation change could occur, leaving the thread pointing to the old Activity. While this can be fixed, it's tedious and ugly compared to just handling the configuration changes yourself. Why should it be avoided?

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• DocumentBuilder.parse() / Parsing Entities

  - by stormin986

  I'm new to parsing XML and am having an issue with entities. (Am doing this on Android, if it makes a difference). Is there a way to have it turn an entity into the character it represents? I have this in the child of an element: "isn&#39;t" (minus quotes). I would prefer it parse it and the end result be a single text node. However, right now this is turned in to TEXT, ENTITY, TEXT. Is there a way to automatically have it parse the entity into text, or a manual way to do it?

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• Get notified when some other application acquires wake lock

  - by Sebouh

  I am wondering if the following is possible in android. I want to have my application do a certain task whenever the phone get awoken. Whenever some other application acquires a wake lock to do it's task, I want my application to do something of its own. Can I get notified through an intent using a broadcast receiver about this event? If so, what will happen if that other application finishes before my task ends? The reason I'm asking is that I don't want to wake the phone up to do my task and affect the battery life. I want to take the opportunity of the wake lock to do my thing.

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• Implement a top level window from a broadcast receiver

  - by kwatts

  I have a broadcast receiver that listens for incoming calls, then displays a popup. The popup is a dialog type of theme and has FLAG_NOT_FOCUSABLE and FLAG_NOT_TOUCHABLE - basically, it's an informational window that goes away after x seconds, and is not meant to interfere or take focus over anything else. The issue is that the incoming call intent, built into android, is getting the broadcast after my intent. This is causing that window to be stacked in front of mine. How to I get my window to always be on top? Thanks!

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• Progress Dialog on open activity

  - by GeeXor

  hey guys, i've a problem with progress dialog on opening an activity (called activity 2 in example). The activity 2 has a lot of code to execute in this OnCreate event. final ProgressDialog myProgressDialog = ProgressDialog.show(MyApp.this,getString(R.string.lstAppWait), getString(R.string.lstAppLoading), true); new Thread() { public void run() { runOnUiThread(new Runnable() { @Override public void run() { showApps(); } }); myProgressDialog.dismiss(); } }.start(); The showApps function launch activity 2. if i execute this code on my button click event on activity 1, i see the progress, but she doesn't move and afeter i have a black screen during 2 or 3 seconds the time for android to show the activity. If i execute this code in the OnCreate of Activity2 and if i replace the showApps by the code on OnCreate, Activity1 freeze 2 seconds, i don't see the progress dialog, and freeze again 2 seconds on activity 2 before seeing the result. An idea ?

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• Problem decrementing in Java with '-='

  - by hanesjw

  I'm making a scrolling game on Android and am having a hard time figuring out why the code below does not decrement past 0. Objects start at the end of the screen (so the x position is equal to the width of the screen) the objects move accross the screen by decrementing their x positions. I want them to scroll off of the screen, but when the x position hits 0, the objects just stay at 0, they do not move into the negatives. Here is my code to move objects on the screen private void incrementPositions(long delta) { float incrementor = (delta / 1000F) * Globals.MAP_SECTION_SPEED; for(Map.Entry<Integer, HashMap<Integer, MapSection>> column : scrollingMap.entrySet()) { for(Map.Entry<Integer, MapSection> row : column.getValue().entrySet()) { MapSection section = row.getValue(); section.x -= incrementor; } } } It works ok if I change section.x -= incrementor; to section.x = section.x - (int)incrementor; but if i do that the scrolling doesn't appear as smooth.

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• Template can not be resolved to a type

  - by chaoticca

  I have this code in an android project, which I am working on, where SomeService refers to SomeService.template. Intent intent = new Intent(getApplicationContext(), SomeService.class); bindService(intent, conn, 0); when I run my code, however, I become this error: "SomeService can not be resolved to a type. - Java Problem" This code was not written by me. I need it for farther use, but I can not even test, if it does, what it's supposed to be doing. Where should I look for an error?

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• Extending folder (LiveFolder?) class

  - by yamsha

  So, I noticed that I can organize apps into folders (HTC Incredible). However these folders are fairly limited in their capabilities. I want to implement an activity that extends the "base" folder activity (at the very least I want to add the ability to rearrange items in folders), but I can't figure out the class name... So, what's the name of the class that is used when adding a "New Folder" to the Home screen? PS I did take a look at the Android developer website. But the discussion there revolves mostly around content providers. I assume that's not quite what I need since I'd have to create a separate content provider for each new folder, or am I misunderstanding something?

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• Is this possible?

  - by Stud33

  I want to incorporate some Accelerometer code into a Android application im working and want to see if this is possible. Basically what I need is for the code to detect car acceleration motion. I am not wanting to determine speed with the code but just distinguish if the phone is in a car and has accelerated motion (Hence the car is moving for the first time). I have gone through many different accelerometer applications to see if this motion produces a viable profile to go off of and it appears it does. Just looking for something that popups a "Hello World" dialog when it detects your in the car and its moving for the first time down the street. Any help would be appreciated and a simple yes or no its possible would work. I would also be interested in compensating anyone that is capable of doing this as well. I need this done like yesterday so please let me know. Thank You, JTW

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• Immediately starting a new activity from an activity

  - by HowsItStack

  When I was originally learning about Android a few months ago I swear I read something about a way to immediately launch an activity when starting a task. I am curious about this now because I need to display an intro screen on launch but I don't want the intro screen to be the root activity. Does anyone know if there is something like this and if not what is the best way to handle an intro screen? I tried googling for a few hours to find it but can't for the life of me. Thanks for the help.

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• Select text in edit window using DPAD

  - by rajankz

  I am using the DPAD controls to highlight text in android text-widget. I am wondering is there is any way that when i highlight the text, it selects it also. Right now when i highlight and try to bring the context menu, the first context menu I get is the one with options to select word, select all etc. and when i do select word, it selects the entire region highlighted(which is okay , but i wanted it to select while am highlighting) so that i could get the cut/copy and paste context menu directly. Any tips? Thanks a lot.

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• can we connect more than two devices with bluetooth

  - by menuka devinda

  can we connect more than two devices with blue-tooth to play a game. I am totally new to Android. I was thinking to write application for card game that play 4 players. I heard that blue-tooth communicate only between 2 mobiles. I want to dig the background before I continue. That's why I ask this. I appreciate your ideas about this and any hints to develop this application also are appreciated. thanks in advance.

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