Android :: Can't Find Certain Implementing Classes
Mar 19, 2010
I am looking for the implementation of the IAlarmManager.I am interested in the scheduling done by the AlarmManager.setInexactRepeating method and so I started looking for the implementation but I haven't been able to find anything.Internally to AlarmManager, I can see that the actual work is being done by an android.app.IAlarmManager interface.After googling around for a bit there seems to reference to an implementing class called android.app.IAlarmManager.Stub but that is as far I get.I am working with Android 1.6.
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Nov 24, 2010
When calling javah on a .java file in my android project, javah was unable to find the android classes (specifically android.graphics.Bitmap).
Here's the terminal output:
CODE:..................
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Oct 23, 2009
I'm having troubles with ADT and JUnit Testing.
When I use HttpClient classes, my JUnit tests fail with errors like: java.lang.NoClassDefFoundError: org/apache/http/client/HttpClient.
I run my tests in Eclipse as "JUnit Tests" (not "Android JUnit Tests") with the "Android Test Launcher". An idea about how to resolve this problem?
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Sep 1, 2010
Not sure how to figure out which android project on android.git.kernel.org corresponds to the classes extended in some of the app examples in the SDK such as Activity, Intent, and ContentProvider.
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Aug 17, 2010
According to this SDK guide, unit-testing a Library project can be achieved by creating a standard application project, reference the Library project and then instrument the application for unit testing. However, when I do this and launch the test application I get the message.No tests found with test runner 'JUnit 3".I'm using Eclipse and the Android ADT plugin, all latest versions.the projects compile just fine. The test project also installs fine to the emulator. But in the console I can see that it looks for <library>.apk, which of course doesn't exist since I'm compiling this as a library into the test project.
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Jan 7, 2010
It looks like Android won't natively support in-app purchases for a while, and when it does there might be a huge user base with devices that don't support them.What's the best way to implement iPhone-like (additional content or services) in-app purchases in Android using the Android Market if possible?
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Jun 24, 2010
I am working on creating an Action Bar like the one from the new Android UI Patterns and I am running into a bit of trouble. I have a ViewSwitcher with two layouts in it. When the user taps the search button I animate between the two layouts. The problem is that the layouts are different sizes and I can't figure out how to make them take up the same amount of space. Here's what I mean. p.s. forgive the bad art, they are just place holders ;)
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Nov 9, 2010
I am trying to do something similar to that of the android lock screen pattern. I have a class that extends a view that I create multiple instances of. These appear on the screen all at once.
I need to be able to click on them individually and have each one turn green individually, however only one on touch listener is listening at once and it belongs to the last dot which appeared, so if I click anywhere on the screen the last appeared dot turns green no matter where I click.
Here is the code for my dot class:
CODE:......
In the code I called newdotdraw multiple times.
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Aug 13, 2009
With reference to the current work at : http://android.git.kernel.org/?p=platform/frameworks/base.git;a=tree;...
Can you tell me how can I implement L2CAP Socket?
I need to do it ASAP for a university project. Hoping for optimistic reciprocation.
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May 14, 2010
Kindly share information regarding how to implement predictions for input methods... I have a new keyboard layout for which I need to provide prediction/sugeestion functionality....
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Nov 16, 2010
I have 2 apps which should both contain some similar activities.... Now I decided to write a new app, some kind of "framework", which contains these activities, to avoid to write the code twice. How can I use these activities in my other 2 apps ? Whats the common approach for doing this? Adding the "Framework app" to the build path of the two other apps won't work.....
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Jul 26, 2010
I am adding gesture recognition to my app. I have added the view as described in the Android Developers Gestures article but when it comes to adding:
CODEE:..........
where do I put this in my code, do I have to create a new class for it, or can I have it in an inner class, or does it not need a class at all?! I have a set up similar to Lunar Lander which comprises of two files, one of which is a thread that handles pretty much all the physics and drawing of the game. The other file begins the thread and saveInstanceState method. Furthermore, what type is mLibrary?! I cannot find out anywhere! I imagine I will put the OnGesturePerformed method in my thread as this is where I handle all keyUp and Down events.
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Jul 12, 2010
I am required to work on an application which is be deployed on devices running Android 1.5. The application is supposed to maintain a connection with a server and regularly poll it for new data. The server will notify the client of new data following which the client will connect to the server and download the data.I know that ideally a push based approach will be more conducive here given that we are to run this on a mobile platform. Also, from Android2.2 there is going to be support for C2DM(Cloud to Cloud device Messaging) but as already mentioned this application is for devices running Android1.5.Implementation: I was thinking of using AlarmManager which would Broadcast Intents periodically(poll interval), The Broadcast receiver will then try to connect to the remote server and make data changed check. If the server has an update, the thread will connect to the remote server and download the data from the server.
Problem and Issues: 1. Is this the right way to approach the problem? 2. Is AlarmManager reliable? Would it remember Alarms after a device boot? (I think it does) 3. How do I ensure that battery usage is kept at minimum.(I have heard something about using "keep-alive" to sustain the session for longer time..what is this legend?) 4. What are other things that I need to consider? I am sure I must be missing lots of things here.
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Jun 27, 2010
Does anyone have any good references for designing and implementing an idea I have for an android application. My idea is for an application that stores information and reviews about a specific location and presents this information to user.I have gone through all the tutorials and have been reading up on anything and everything about android. Now I am ready to challenge myself with my first app.
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Jun 3, 2010
I was trying to get hold of 2D graphics in Android.As a example i want to implement a custom drawable and show it in my Activity But when i run the app i see no rectangle on the activity, can anyone help me out? Where am i going wrong?
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Aug 4, 2010
I need to know how to create simple android application by sqlite database, how can i view the sqlite database and to view the tables has like other mysql server,Let me help to create simple application with database.where i can find the database.
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Nov 14, 2010
I have some design questions that I want to discuss with people interested in helping me. I am planning to develop a simple VoIP program that allows two Android phones in the same network to use VoIP. My goal is simply to capture sound, send the data with UDP, receive UDP data and play sound.My current design is to have 2 threads: one captures the microphone and sends the data; the other one receives bytes and plays them.I was starting to implement that using MediaPlayer and MediaRecorder. The issue that came up is how do I record and play sound? By that, I would like to know if I need to use a file, although that seems slow, or if there is anyway to have the recording automatically sent to my UDP socket please?Basically, I wonder if I have to record to a file, then to be able to play it, or if I could just pass a socket (for recording and playing).
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Sep 17, 2009
I'm writing an application where real-time knowledge of the GPS state is critical to convey to the user. I request GPS updates at 1000 ms intervals -- when I haven't received another update 1500 ms past the most recent update, I want to display a yellow icon, and 5000 ms after the most recent update I want to display a red icon. Currently, I'm doing it like this: private CountDownTimer gpstimeout; public void onLocationChanged(Location location) { if (gpstimeout != null) gpstimeout.cancel(); gpstimeout = new CountDownTimer(5000, 1500) { public void onTick(long m) { setYellow(); } public void onFinish() { setRed(); } }; gpstimeout.start(); }
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Mar 30, 2010
I am writing an application which one of the activity has a button and use this button to switch to another activity when clicking that.
The main activity implements the onCreate and OnClickListener as follows:
CODE:...........
When I try to run this program on my emulator, after hitting the button, the program stopped unexpectedly. I follow the instructions of implementing OnClickListener firmly so I don't know what's the problem in my implementation.
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Jan 12, 2010
I am creating a small calendar control that will be part of an application that runs on a larger-than-phone-sized screen. The calendar will simply display the current month and allow users to touch-select a day with an iPhone keyboard style popup bubble indicating which day is chosen.
The problem is that in order to do it with buttons would require 42 tiny buttons, which would probably be a resource hogging solution. Although a keyboard would give me the iPhone-keyboard-bubble-like behavior, i dont think that we can place a keyboard in a static location within a Layout, using it like a View.
So I am wondering what is the best way to go about implementing this. Is my "42 buttons is too many" assumption correct? Is my keyboard assumption correct? Do I have to use a SurfaceView (or something) and draw everything myself? Is there some other grid-like control that can make this simpler?
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Oct 1, 2010
I am using seek bar to show the progress of the video which I am playing. I am using Media Player / Video View. But when I move the thumb of the seek bar back and forth, the video is not starting correspondingly from the position of the thumb. Anybody has any idea of how to load the video from where the seekbar's thumb is positioned?
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Oct 16, 2009
What are the different ways to implement push technology into your Android app? The client Android app is supposed to receive content (XML Data) pushed by the server. I've looked around and found out it was possible to achieve it with usage off the SOAP protocol. But are there some better ways top implement push? The main concern in this project is the phones battery life, all off it has to happpen over WiFi, pushed content has to be viewable on the device immediately.
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Jul 20, 2009
How to implement Android system l10n ？It has been l10n in German.What is different between Android and Linux in realizing system localization What is Operational process of implementing Android l10n ? What is needed to implement Android system localization? such as Unicode UTF8, charset,other anything else?
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Jun 27, 2010
Does anyone have any good references for designing and implementing an idea I have for an android application.
My idea is for an application that stores information and reviews about a specific location and presents this information to user.
I have gone through all the tutorials and have been reading up on anything and everything about android. Now I am ready to challenge myself with my first app.
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Jul 22, 2009
Can some one help me out with implementing flood fill algorithm on the bitmpap. I have tried various algorithms but either they seem to be too slow or i get a stack over flow exception.
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Oct 14, 2010
I want to create a ArrayAdapter for one spinner. So each element contain one string (which will be displayed in the spinner/list) and one value (e.g. an ID). How I can easily store a second value beside each string without implementing a new Adapter class?
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Sep 9, 2010
Is it possible to implement a custom way to lock/unlock an android mobile phone?I know that in versions 2.1 from android and before, there was only the locking pattern available, and that in version 2.2 it is now possible to set a password as well, but what if i want to make a custom way of locking/unlocking it myself (such as recognizing handwriting, or making some different alternative method for the locking and unlocking process)?Is it possible to achieve this through an application? or would it be necessary to make a version of the Android OS based in the same source code but with changes within it?If it would be necessary to make a different custom version of Android, can anyone give me any hints or tips as to how and where in the source code files are the blocking options considered?
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Aug 29, 2010
on implementing a multi-select (check boxes) ListPreference on Android? Would I have to extend the ListPreference? Is there any classes already documented to do this?
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Jul 17, 2010
I am trying to implement a RESTful API in which I have to upload files that are relatively large for a mobile platform. The upload could take anywhere from 30 seconds to 5 minutes.I would like my application to be completely usable while the upload takes place. I've been doing some research and I've come across a few methods from which I can't decide which is the correct solution to my problem.Using an IntentService -- handles the worker thread so I don't have to. Using my own type of Service-- still need to implement an AsyncTask to handle the large process. Implement an AsyncTask in a singleton file that would allow me to do all the work there but without using the service class. My question is which method is the best -- if one isn't listed but is a more apt solution to my problem then I would appreciate suggestions.After researching all these methods I am still also confused on one thing. Lets say I upload a 2MB files, but I want to know when it is done. For example, lets say I have a service that uploads an image and returns and imageID -- I need to be able to know when that service returns an imageID -- process that and then move on to the next upload until the rest are finished.
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Jul 16, 2009
I have a custom EditText and a TextView in an Activity. The custom EditText traps for key presses and calculates the number of character entered and wants to publish the character count to the TextView. Do I use the java.util.Observable/Observer way ? Or is there a more native android method to achieve this?
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