Android :: Good Chart Engine?
Aug 17, 2009
Can anyone suggest good chart engine for Android?!
I did a small research and found several engines: - Java4Less (http://java4less.com/charts/chart.php?info=android) - Chart4J (http://code.google.com/p/charts4j/) - BlueChart (http://code.google.com/p/bluechart/) is it a port of jFreeChart?! - aChartEngine (http://code.google.com/p/achartengine/) - aiCharts (http://www.artfulbits.com/Android/aiCharts.aspx)
Somebody try them?! Any pros and cons?! Which one is the best for Android?!
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Sep 9, 2010
What is a rendering engine? Is there any for Android?
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Sep 8, 2010
I want to draw a chart and I'm using a scrollview to do so. my scrollview holds the chart view. What I've observed is that the scrollview's onDraw calls the onDraw of my chart view. Now I draw the entire chart on the canvas when the onDraw of chart view is called. Also scrollview's onDraw is called everytime I scroll the view. So I end up drawing the entire chart multiple times. Is there any better way to achieve what this
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Oct 8, 2010
Is there any api for drawing financial chart in android.
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May 9, 2009
I am looking for the .jar file or an api where i can use and draw charts for my android application.i searched net about it couldn't find much results..Kindly help in it to find any chart api that can be for the android applications.
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Feb 18, 2010
How can I build a pie chart in my application?
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Feb 16, 2010
Can I use the google chart API in an android project? If so can anyone link some examples?
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Oct 8, 2010
How to draw chart like the following image in android.what is the tool can we use?
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Sep 4, 2010
I used to have an APP that showed my SD card usage on a pie chart and give a list of what was using how much. Anyone know what this APP is called?
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Oct 7, 2010
I'm seeing that it would be good to have some sort of charting scheme (or possibly just a table-based design strategy) when designing Android apps.Have any such schemes been proposed?
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Jan 24, 2012
how to make battery consumption on running applicaion in android my thesis problem. it's about a battery notification or battery consumption of running application. how can i make it just like a chart/history that will tell how much battery an application consumed.
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Feb 23, 2010
I hope what I'm asking hasn't been asked, but if so, I'd gladly take a link in the right direction.Is there a comparison chart/ T-chart that compares the various roms out there?Something that compares build (2.01 vs 2.1), features (wireless tether, live wallpapers, etc), speed results, strength/weakness narrative etc. similar to what you'd find on a consumer guide, perhaps in a scope and sequence type of alignment that alludes to release dates?I've heard "go with the rom that best suits your need", but a diagram like the one suggested might help the community.Perhaps a knowledgeable veteran would be interested in such a project?If I'm way off, just tell me to go pound sand.
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May 2, 2010
Just switched from a Motorola Droid to an Incredible after having the Droid for 8 days. Love the Inc but miss the stock weather that the Droid had, specifically the line chart that had % chance of Precip and Temp forecast vs Time. Any way I can get this on my Inc? Thanks.
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Aug 25, 2009
Could someone recommend a free or cheap Chart drawing package for Android? I found this one, which is quite elegant but pricey ($300/license):
http://www.artfulbits.com/Android/aiCharts.aspx
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Oct 18, 2010
I'm interested in developing an android application that will display a globe of some sort like Google Earth. I've never used opengl or have any experience with graphic programming so I'm here to learn some basics. Now, I know there are things like the Unity or Ogre that help facilitate graphics but what exactly do I gain from using these engines as opposed to just using opengl api to render graphics? Why do you use engines like Ogre as opposed to straight up opengl?
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Dec 26, 2009
I've been working for the past couple of days to allow users to login to an android app with their gmail account and pass the authentication token to my app hosted on app engine - so i can download xml from my web services hosted on app engine as if the user logged into the app directly. There is a lot of info on ways to get the google auth code and the auth cookie and then pass the cookie in the header of an http request - but no info out there on doing all of this from android and going as far as to add the cookie to the remaining http requests. So, now that's it's working, i thought i'd compile it all together and post the solution here in my blog - enjoy.
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Aug 16, 2010
I'm just starting into Android game development, and I'm looking into using an open-source game engine as the foundation of some of my ideas. Does anyone have any favorites? So far, AndEngine looks the most promising...I've also looked at Rokon. Any other notable engines I should be looking at.
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May 7, 2010
I am trying to implement text to speech by following this article on the Android Developers Blog. It suggests the following code for installing text to speech data if it is not supported.
CODE:...........
This throws an Exception:
ActivityNotFoundException: No activity found to handle Intent
However, I am using the code here to determine the the intent is actually supported. Here is the list representation:
[ResolveInfo{43cc5280 com.svox.pico.DownloadVoiceData p=0 o=0 m=0x108000}]
Why doesn't this work?
Update
I don't know why, but it seems to work now.
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Aug 16, 2010
In general, I'm very impressed with Android's default text to speech engine (i.e., com.svox.pico). As expected, it mispronounces some words (as do I) and it therefore occasionally needs some pronunciation guidance. So I'm wondering about best practices for phonetically spelling out those words that the pico TTS engine mispronounces. For example, the correct pronunciation of the bird Chachalaca is CHAH-chah-LAH-kah. Here is what the TTS engine produces: mTts.speak("Chachalaca", TextToSpeech.QUEUE_ADD, null); // output: chuh-KAL-uh-KUH mTts.speak("CHAH-chah-LAH-kah", TextToSpeech.QUEUE_ADD, null); // output: CHAH-chah-EL-AY-AYCH-dash-kuh mTts.speak("CHAHchahLAHkah", TextToSpeech.QUEUE_ADD, null); // output: CHA-chah-LAH-ka mTts.speak("CHAH chah LOCKah", TextToSpeech.QUEUE_ADD, null); // output: CHAH-chah-LAH-kah Here are my questions. Is there a standard phonetic spelling recognized by the Android TTS engine? If not, are there some general rules for making custom pronunciation spellings that will make the spellings more likely to be correct in future TTS engines/versions? It appears that the Android TTS engine ignores text case. What is the best way to specify emphasis?
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Jan 18, 2010
LinkUp's "Job Search Engine" application bring the web's highest quality, fastest growing job search engine to your Android. The app allows you to search job listings that are found exclusively on company websites. As a result, the jobs on LinkUp's "Job Search Engine" app and LinkUp.com are always current, often unadvertised, and never fake.
The app features:
Basic & advanced search
Saved search history
Email job alerts
RSS-bookmarking of favorite jobs
Download the application with this QRCode:
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Nov 5, 2009
I'm currently working on a project that uses Google App Engine as a server. I see that prior to the Android 2.0 SDK there was no way to directly access a user's Google Account information for the purposes of authentication. Do the new Account Manager APIs now make it possible to automatically log a user into a GAE app? Is anyone else working on something like this? Are there any publicly available examples on how to accomplish this?
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Apr 29, 2010
I've just released version 0.2 of Gamine, an open source 3D game engine for Android devices: This release adds lots of major features, including particle effects, OBJ file import, picking, text rendering, transparent rendering, and more. Although it's still a very early version, I believe it is now complete enough to be used for real games. So give it a try, and I'd really appreciate any feedback about it.
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Oct 5, 2009
I am working on an app that uses the SoundPool class to play sounds. Basically every n milliseconds I need to play up to 16 sounds and I need this to be as steady as possible. The best solution I found so far is to use a java.util.Timer and the scheduleAtFixedRate method (setting also a THREAD_PRIORITY_URGENT_AUDIO in the TimerTask run method), the result is pretty good but it is still not perfect and sometimes the executions get slightly delayed. Is there some other way I should try to play sounds _exactly_ every n milliseconds? Different threads, some kind of optimization, stuff like this?
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Aug 26, 2010
I have spent two days trying to decide on a way to upload and download data to the Google App Engine. Do I use REST or simple HTTP post/get? Do I use JSON or XML? Do I use java or Python. I am thinking probably use python and probably use REST. But which one out there? There are so many to choose from. None seem to work out-of-the-box, but need faffing around with bits of code from here and bits of code from there. And is not clear at the outset what am taking on or what the limitations are.
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Sep 1, 2010
I have need to make a sort of "Pie Chart"-style circular display. the wedges of the chart have to be touchable, and the whole circle has to be able to spin 360deg. I'm still an android noob, but I'm guessing that I can't do this with a Layout.. right? preferably, the wedges would be image assets that I create in Photoshop, and not programmaticaly created does anyone have any Idea where to start with this?
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Apr 25, 2008
Mages is multiplayer client/server game engine for Android and other mobile devices (currently Android and J2ME devices are supported, development for Windows Mobile in the progress). It allows developers to create internet multiplayer games by implementing only core game logic and GUI by using powerful engine API.
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Aug 5, 2010
How do you improve the position of an app in Android Market search results? The apps don't seem to be sorted on downloads.
The scope of this question is limited to working with the Android Marker search engine, of which there's little or no information. I changed the title to make it clearer.
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Aug 17, 2010
I'm on my way with my first game, all design and that stuff are done, just coding left.I have successfully watched tutorials around the world wide web with information about Graphics and how to create a successfully thread-synchronization within it. Like now I have a SurfaceView-class and a Thread-class. The thread-class have this constructor to receive the Game Engine from my SurfaceView-class.
Simple code from Thread-class constructor: Code...
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Jan 7, 2010
It seems to me that the method "speak" of class TextToSpeech only works in method onInit or on Utterance Completed. However, onInit and onUtteranceCompleted don't have any parameter for passing strings. In the following code, I tried to define a global string arraylist outside the methods and used the arraylist for string input.For some reason , it didn't work out.But the engine did speak "did you sleep well". public class TTS extends Activity implements OnInitListener,OnUtteranceCompletedListener,Runnable ArrayList<String> content=new ArrayList<String>();
int MY_DATA_CHECK_CODE=50;
private TextToSpeech mTts;
public void onCreate(Bundle savedInstanceState) {
content.add("test");
content.add("another test");
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
Intent checkIntent = new Intent();
checkIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
startActivityForResult(checkIntent, MY_DATA_CHECK_CODE);
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == MY_DATA_CHECK_CODE) {
if (resultCode == TextToSpeech.Engine.CHECK_VOICE_DATA_PASS) {
// success, create the TTS instance
mTts = new TextToSpeech(this,this);
} else { // missing data, install it
Intent installIntent = new Intent();
installIntent.setAction(
TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
startActivity(installIntent);
} public void onInit(int status){
if(status==TextToSpeech.SUCCESS){
mTts.setLanguage(Locale.US);
mTts.setOnUtteranceCompletedListener(this);
String myText1 = "Did you sleep well?";
mTts.speak(myText1, TextToSpeech.QUEUE_FLUSH, null);
for(int i=0;i<content.size();i++){
mTts.speak(co
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