Android :: Does Android Support Near Real Time Push Notification
Aug 7, 2009
I recently learned about the ability of iPhone apps to receive nearly instantaneous notifications to apps. This is provided in the form of push notifications, a bespoke protocol which keeps an always on data connection to the iPhone and messages binary packets to the app, which pops up alerts incredibly quickly, between 0.5 - 5 seconds from server app send to phone app response time. This is sent as data - rather than SMS - in very very small packets charged as part of the data plan not as incoming messages. I would like to know if using Android there is either a similar facility, or whether it's possible to implement something close to this using Android APIs. To clarify I define similar as: Not an SMS message, but some data driven solution As real time as is possible Is scalable - ie: as the server part of a mobile app, I could notify thousands of app instances in seconds I appreciate the app could be pull based, HTTP request/response style, but ideally I don't want to to be polling that heavily just to check for notification .. besides which it's like drip draining the data plan.
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Mar 3, 2010
Doing some investigating and having troubles find specifics or how to raise issues. I send WAP push message to handsets yet have been testing the android handsets yet they are not recieving them. All versions of Android are affected. Other devices platforms dont have any issues "WinMo, Symbiam list goes on" Wierd thing I have tested it on a an HTC running Android with Sense UI and messages are received. What I would like to know if possible is anything happening to these messages or Could the device be intercepting it and trying to interprt in another applicatiuon? Could the device be recieving these messages yet not know what to do with them discard them? I have tried the dirreferent versions of WAP yet none work. Is there a module inside android not turned on. How would I request a change for android "if thats even possible"
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Jul 20, 2010
Here's my issue: Came from a windows mobile phone. However, one area winmo is obviously good at is exchange support. Here's what I mean:
I regularly receive and forward large attachments (PDFS - usually 10 megs or so), and the winmo phone made it easy to do so when out of the office. I'd just hit forward and away it would go. The phone would tell the exchange server to forward the mail, and it was done. The phone never actually downloaded any attachments to forward, unless of course I wanted to download it for viewing.
I've found this phone instead of just telling the exchange server to forward the message actually has to download the attachment, then resend the attachment. This is stupidity in it's fullest when working with a 10 meg attachment. Instead of taking a split second to forward something it'll take minutes to download, then minutes to upload, and obviously shorten battery life considerably. So my question is - am I missing settings, or is the installed mail application not able to do so - and are there any android mail applications that will forward attachments off an exchange server without actually downloading the attachment first?
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Nov 11, 2010
Is there an app that lets you view your frames per second in real time in video games and emulators?
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Jul 28, 2010
After a round of hassle (many thanks to sontaikle), finally i managed to do some screen capture from my Android but right now I am thinking about this. Is there any way I can do a REAL TIME phone simulation on my PC. Its alike TV output from phone to projector (Galaxy S can do that) but I have other Android which have no TV output function from the phone, so I wonder if I connect the phone to PC and get the real time screen output (few second lagging is ok for me as well) to PC than I can project it out via projector during discussion, presentation. I have tried this Emulator, too bad its doesn't project that on the phone on PC. How to install Android SDK and play with Android 2.0 in the emulator - Android and Me
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Mar 23, 2010
I need to load an audio resource and play it, but I also need to be able to modify some parameters (like the volume, or the playback rate) while the audio is being played. For example, I might want to play a 10 seconds audio stream, and change the volume only after 3 seconds. Is there a way to do it? I've been experimenting a little with AudioTrack without results.
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Feb 13, 2010
I'm trying to figure out how to write an app that can decode audio morse code on the fly. I found this document which explains how to record audio from the microphone in Android. What I'd like to know is whether it's possible to access the raw input from the microphone or whether it has to be written/read to a file.
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Feb 15, 2010
I am currently trying to braodcast real time voice from Android using RTP to other Android phones connected over Wifi Ad-hoc network. I have few questions in this regard,
1. How to control and set the RTP on Android? 2. Which Codec are supported by Android for voice communication? and how to incorporate them?
We are able to record a voice from microphone and store it on SD card for a playback. The next step would be to link the outstream of real time voice with RTP also incorporating Codec
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Jun 10, 2013
I was wondering why Android keeps lagging a bit. I mean, quadcore should be fast enough to stop that from happening right? So I started Googling.
I got this article: [URL] .....
Basically it says this: Android's UI rendering thread does not work in real-time (the priority is not set at that), unlike iOS'. It's just about the one thing that's still better about iOS in my opinion.
How to make this thread render in real-time?
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Feb 25, 2010
I know you can apply Permissions for Applications on it's manifest.xml file. What I want to know is, can those Permissions be adjusted by the Applications on the fly?Here's my reason: say I have an application that is allowed to do "x", "y", and "z" (SMS, sockets, etc) Permissions. Now lets say I have a logical "user" that connects to this Application, and I want that user to only be able to do "x" and "y", but not "z" Permissions. It would be nice to have the Android Framework handle that instead of having a bunch of "if's" in the App code.
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Mar 13, 2010
I developed and published a game about two months ago. Since then, I've received several negative comments about input lag in the game. Before releasing the game, I already took several measures to hopefully prevent lag from occurring: 1) Game is almost entirely written in native code 2) After initialization, my process never invokes the GC during gameplay (no GC executions from my process show up in the log) 3) Average FPS is generally > 30 fps 4) I tested the game on both a Motorola Milestone and an HTC Magic and I don't experience any noticeable input lag (except perhaps when the GC is executed by other processes) My guess is that the lag that users are experiencing is a result of the GC being invoked by another process. Has anyone been able to address this issue? Specifically, have any game developers been able to achieve a completely lag-free game and thus avoid negative ratings that drag down your app? The only other suspicious thing I've noticed is the following lines showing up in my log any time a SoundPool clip is played: D/AudioHard wareMot ( 1054): AudioMgr:AudioStreamOutMot::standby called D/AudioHardwareMot( 1054): AudioMgr:Output 0xb538 entering standby D/AudioHardwareMot( 1054): AudioMgr:Closing stereo device D/AudioHardwareMot( 1054): AudioMgr:Output 0xb538 exiting standby
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Jul 1, 2010
I need to make a video as a DEMO for one application I have developed. I know that there are some experimental applications that use DDMS and achieve a framerate of 5-6 fps. This framerate is completely insufficient for my purposes since the application has smooth animations that i would like to show. Is there anyone that has found a way to do a real time screen capture on android? Should I settle for a capture of the emulator or a real video done with a real camera?
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Sep 9, 2009
I want to know the state of SD card is dynamic mounted or not mounted? it's very kind of you if you can give me a demo(for example, use api register Receiver、Broadcast Receiver、on Receive and so on).
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Feb 12, 2009
i need to know about the LocationListener() working in the real time. Does it expect the user(device) to move in order to update the current location details or it automatically updates when ever the gps is enabled? Another query is regarding the getLastKnownLocation(). When is that last known location will be lost and thus returns null... (in realtime).
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Nov 9, 2009
Is there an app for real-time(or at best, delayed) stock reads? I have two apps on my Bold(one real-time and one delayed) and before I switch Id like to make sure Im not losing every application I currently use.
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Jul 11, 2010
I know this has been talked about a lot in these forums, but I don't see any proof one way or the other. Some people say that the only way to get push notifications is to use the gmail app or a 3rd party app, and some people say you can use the stock HTC app and set things up through Exchange. Then some more people say that even setting it up through Exchange is a "pull" account as well, not push.However, what I don't see is hard core proof to back any of this up. I would imagine that there is documentation out there somewhere of what exactly is driving the email collection in the HTC Sense email app, and whether or not it is different for Exchange accounts.
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Oct 26, 2010
I can use AudioRecord to pull the audio data out. But the format is PCM, which is too huge to sent out through network. Does any one know how to change it to AMR ?
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May 1, 2010
I would like to know if somebody knows a library to changing the playback rate of a track in real time. My idea is to load a track and change its playback rate to half or double. Firstly, I tried with MusicPlayer but is was not possible at all and then I tried with SoundPool. The problem is that with SoundPool I cant change the rate once the track is loaded. Here is the code I am using (proof of concept): Code...
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Sep 14, 2010
I am new for multimedia in Java and I am going to develop an application which can analyze the sound spectrum. I don't know how to get a real time sound from the mic of the android and analyze it. If someone know about any API and method that how to get real time sound and get the values of its spectrum.
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Apr 6, 2009
I want to display the status of the activity execution on the screen using the TextView while activity is executing. I am appending the String messages at different stages of execution in the TextView, which is defined in the Layout main.xml (e.g. TextView.append("Server started..").
For e.g. I am running socket communication application in which my android application is the server and it is receiving the messages from the local desktop. So in this application I want to show "Server started.." message when socket server on android started , then a messge "waiting for message.." and then "message receivied.." when message received by android server.All 3 steps are the part of a single activity.
But in my case, I am getting all 3 messages at a time after activity execution completed. Is there any API available, using which I can show the status during the execution also.
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Oct 26, 2009
I first have to say that I'm biased, 'cus I like to write music apps (like music generation apps). However, this affects games as well. It's somewhat disappointing how OpenGL has made it into the NDK now but there isn't any NDK methods to get to sound to have faster access. Over the weekend I did some more testing and if you make a "drum" app, for example, and play the sound using either SoundPool or AudioTrack, you will get about a 100ms delay buffer, which is clearly audible (gap).
I made a test app where when you touch the screen, upon the DOWN event, it would play a short sound (like a drum sound). It clearly was not real time responsive or even close - you could hear the delay. I'd be interested to know if anyone who has made a game has any trouble with sounds? It seems like they aren't going to really trigger real time enough if you use SoundPool, for example. Am I completely wrong? Seems like your game is going to perform an action, play a sound, but the sound will have latency which I would think would throw off the game a bit..................
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Jul 27, 2010
I am looking to see if anyone knows of an app in the market that would be able to give me real time traffic updates on traffic jams, construction, accident ahead and perhaps offer an alternate route to bypass it. Can Google MAPS do this? If not, is there an app in the market that can do this? I am hitting the road tomorrow for a road trip and that would come in handy!
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Jan 31, 2010
Is there any push notification API for Android... I tried search with Google but couldnt find any.
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Nov 23, 2010
Im facing a problem in android app for push notification, i used to register the app in Urban Airship. But when i run the app, im getting a response as Application registration invalid!
I referenced the sample application from github, i have used the same coding in my application.
I have entered the details in ua.properties file is, debug=true
debug.app_key=myAppkey production.app_key=myAppMasterSecret
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Aug 9, 2010
I want to know that is it possible to implement the push notification in Android 1.6. If it possible.
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Sep 24, 2010
I am doing a sample application for transfering realtime video from one android device to an emulator, in device side i can open video cam and a set an output file for it, while the recording is progressing, at the same time i am open a file stream and reading all the content by bytes with respect to avilablity, and writing a socket which is communication with the emulator. At the emulator side i am writing this to another file. When i click the recording stop button, i read the rest of the file from the device side and writing to socket stream. When i check the file size at the both side it is same But i cannot play the file at the emulator is side when i check with vlc, in the device side i can play recorded 3gp file So my doubt, same file i cannot access at the same time when one thread(android camera) is writing to the file or it will correupt?
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Nov 3, 2009
Space STG - Galactic Wars (real-time strategy) - introduction I want to introduce my game. If You would like to see more, please visit www.inventiventure.tk. Space STG - Galactic Wars is real-time space strategy game. Build buildings, economies, ships, defense and technology. Send your fleets of ships to conquer enemy planets. Use nuclear missiles, probes, planetary defenses, cloaking technology and more. The aim of Space STG is to dominate the Galaxy. Expand your empire by mining resources, building space fleets and planetary defenses. Invade your enemies planets and size control of each region.
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Sep 18, 2011
Now I write one app and have some problem - I need to show real-time outgoing call duration. But I do not know when I should start timer. I must start when get answer from other side. I tried TelephonyManager.EXTRA_STATE_OFFHOOK -- but it's state is when I press call-button..
OFFHOOK is the state when call is placed.
So we should be notified when the call is received. How can we get that?
When I should start count outgoing time?
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Jun 3, 2012
I was looking for an app that shows the realtime internet bandwidth Upload/Download in the status bar. If there are any apps out there?
Unfortunately, I have seen this only in iphone, I have attached a screenshot that shows what I'm looking for.
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Aug 14, 2013
When I first had my HTC Hero, I found about android's DLNA capabilities and it was pretty. Amazing that I could stream music and pictures to my tv, even videos in some rare occasions but actual on-the-fly transcoding was completely impossible. Now skip ahead to my third phone, ZTE Blade III.
1Ghz and 512mb ram is quite good for what I need and I was hoping that it could transcode some poor-quality videos I film with my phone. Why? Well, my TV has pretty small range of supported video formats and of course that my phone records video in the unsupported format. I tried a wide varety of DLNA apps and none of them had anything to do with transcoding. I tried twonky, skifta, bubbleupnp... No result.
Why is this so taboo? I understand if the file is in full HD but Blade III records in VGA. It shouldn't be a problem
to transcode or am I mistaken?
tl;dr need app that can transcode files in real time and send them to my tv (something like wmp but on android).
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