I wrote a simple test driver to test the bluetooth apis. Anyone can verify whether I am using the API correctly?
Everything seems good but no data read:
Before calling the following, inquiry scan successfully returned, and the remote device is pre-paired.
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I just got a Pioneer AVH-P4100DVD unit to replace my DEH-P700BT unit. The P700BT had no issues playing music off my Hero through the USB cable attached to the receiver (just have to mount USB). The P4100DVD however when connected just says "format read" and will stay there. Just trying to figure out if there is a work around to get the USB cable to work with the P4100DVD?? I miss being able to control the music on my phone from the receiver. That is why I am not using the AUX jack. I have also tried turning the USB debugging on and off on my Hero. I know the USB works. I plugged in a thumb drive and it read the music fine.
View 10 Replies View RelatedI captured an image by android G1, now trying to display it as ImageView but it gives me memory allocation exception.
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The default image resolution of G1 camera is 2048 * 1536
I also tried to compress image on selection but still same exception.
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I have a 16mb binary file and I want to read bytes without using any loop. like if i want to read 16 byte i can pass 16 to some method(if there is any) and it give me my desired result... right now i am using loop for reading bytes but my application is so huge i am afraid that it do not get slow.
View 4 Replies View RelatedI have a frame of 22 bytes. The frame is the input stream from an accelerometer via bluetooth. The acceleromter readings are a 16 bit number split over two bytes.
When i try to merge the bytes with buffer[1] + buffer[2], rather than adding the bytes, it just puts the results side by side. so 1+2 = 12.
How to combine these two bytes to obtain the original number. (btw the bytes are sent little endian)
I'm trying to get a byte array of an image saved locally on the phone. I'm using the code...
How can I get the Bytes?
I am using the AudioRecord class to analize raw pcm bytes as it comes in the mic.
So thats working nicely. Now i need convert the pcm bytes into decibel.
I have a formula that takes sound presure in Pa into db. db = 20 * log10(Pa/ref Pa)
So the question is the bytes i am getting from audiorecorder from the buffer what is it is it amplitude pascal sound pressure or what.
I tried to putting the value into te formula but it comes back with very hight db so i do not think its right
I have a function I am using to upload files. How can I get the number of bytes of the file that have been uploaded (transferred)? Can I setup a timer that does this? If so, what variable to I read to get the number of bytes uploaded?
Here is my code:
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An Android app I'm writing involves quite a lot of downloading of content (think podcatcher/RSS).
I would like to be able to give the user an indication of how many bytes they've downloaded, so they can make the decision whether they want to use Wifi or not.
To this end, I have found a way of counting the number of bytes read by the app, by wrapping an InputStream in a simple CountingInputStream.
However, this does not take into consideration basic things like packet headers and HTTP headers. More importantly, it does not take into consideration any compression that content may be encoded with.
So, how many bytes did my application download over the network? I'm not so interested in the number of bytes uploaded, but if know how, don't be shy.
I have gone down a fairly low level approach as I am feeding the input stream into an XML PullParser. I will also be needing to do a similar exercise with dumping bytes (images in this case) straight onto the SD Card.
I create data file in android for my application in the app's data directory. The write is successful with no exceptions but file contents are not complete. It truncates at 90112 bytes. Any idea what is going on ? Is there a limit ?
Here is the snippet
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I have a problem.
1 - From a webservice. NET 2008 (vb), I have a method that returns an array of bytes, the byte array is actually a string "Hola Mundo" ("Hello World" in English) compressed with the Class of System.IO.Compression GZipStream.
2 - The method returns the string "Hola Mundo" compressed, and this is what the webservice returns:
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3 - if I do a test from a windows application from Visual Basic. NET to run this method returns me this string and Unzip with another function I have, it brings me the "Hola Mundo" ....
4 - On Android (Eclipse) and I managed to make the request and bring me the previous string ... but do not know how to decompress and show me "Hola Mundo" ...
5 - I have tried several codes from the web, but none work.
Am trying to store all images in my server, then i need to show based on requirements, i am able to store and restore bitmap bytes but i cant recreate the bitmap using stored bytes , pls find my code below and suggest me a solution if i doing wrong.
Converting Bitmap to Bytes. Code...
I'm developing an android video uploading app and uploading large amounts of video is a problem, I get different type of exception sometimes (host not resolved, pipe broken), I do a multipart POST but I have a feeling if I upload chunk of bytes one at at time that'll increase upload speed as well as solve connection timeout and these type of problems.
View 1 Replies View RelatedI am trying to follow the instructions on this page to create a trace file. I can see the file in File Explorer in DDMS and can pull it onto my PC but it is zero bytes long.
Any suggestions as to what I might be doing wrong, please?
I've tried recording video using MediaRecorder API but the file that gets saved each time is of 0 bytes.
I use the MediaRecorder recorder = new MediaRecorder(); ad then recorder.setVideoSource . . .recorder.prepare() to generate the preview and when the user clicks record, i say recorder.start() but the file recorded is of 0 bytes. And after some time, recorder.stop() -on user click that is.
Downloaded FoxFi, and love it. Great when I need to use my laptop. But...
Lately, I've noticed it has been having connection issues. I start the hotspot, my laptop "sees" it. And I can connect (shows "connected" in the wifi window next to "FoxFi" on laptop). But, at the top of the same wifi window, it also shows (under "Currently connected to:"), "No internet access" (or something - connected right now on different wifi network, so I can't get the exact wording). But I hope this is clear.
Why this weird contradiction? One part of the window says I'm connected, the other says I'm not.
I'm building an android app and I'm currently having trouble retrieving a bitmap from an URL.
Here is the code I'm using :
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Everything works fine when the picture's write but when some bytes are wrong, result gets null. I think it's basically expectable as it's written this in the doc of BitmapFactory.decodeStream :
If the input stream is null, or cannot be used to decode a bitmap, the function returns null. The stream's position will be where ever it was after the encoded data was read.
The problem is, my wrong picture is well interpreted by my web browser and I can do so on iPhone platform.
Is there a way to sort of ignore those wrong pixels? maybe with the option parameter?
I bought iball andi 5li android smart phone a few days back. The configuration of the phone is:
512mb ram
4gb internal
1.2ghz cortex a9 processor
android 4.1.2
Although my device runs almost every app out there (including temple run, subway surfers etc.) but occasionally im facing problems.
Problem occurs after 3-4 days of restarting the phone. When i restart and check the ram usage it says 350 mb (approx) as used and 150mb(approx) as free ram every app runs smoothly but as days pass by gradually the free ram starts decreasing down to 30 mb where all the apps (games and browsers) start crashing with a low memory message. then the conditions get worse after approx 2 hrs free ram is now 0.0 bytes and even the launcher,settings etc crash with a low memory message. The only solution out is to restart the phone.
[used androids before and is quite aware of closing or killing apps but none is working]
Already Tried:
# removing apps from recent list
# stopping apps from Setting>apps>running apps & cached apps as well
# restoring to factory defaults
# used ram freeing apps (no change on ram)
I posted this earlier but it disappeared? When the phone is unplugged, it says USB connected, and all of the icons are missing from the top of the homepage (time, signal strength, 3g, etc). The pull down menu is also hard to pull down then is real jerky when it does pull down. When the phone is plugged in, it has the signal for the USB and all the icons return, It also shows a full battery, then tho it is not.
View 3 Replies View RelatedI'm developing an android app that will play mp3 files. However the mp3 files are encrypted on the sd card or sqlite. Either ways, after decryption, i'll have a stream of bytes. How do i play them? MediaPlayer does not take inputstream as parameter, so i cannot consider that.
View 2 Replies View RelatedI know this has most likely been discussed many times. But I am looking for a decent email widget.
At the moment I am using the default htc email widget, however when ever I read an email from my gmail account it doesnt update the read status so it still shows as unread.
I would like one that would update the read status and possible the support for unified inbox so I can see new mail from hotmail account and gmail.
what are the different numbers under the "bytes" section of the app when running?
Is the second number how much i have used or is it the first number ?
I am trying to use httpclient to hit a http link. For some reason I keep on geting this "socket is not connected" error. I am not sure about the reason for this error. Can any one help? This error also occurs when I start using the car navigation app or whenever I try to forward calls.
View 5 Replies View RelatedI installed gtalk using the .apk cause it wasn't installed by my provider (Orange France)it works fine.BUT, even if I kill it using android Taskiller, it seems to be always connected.
View 4 Replies View RelatedI don't want my user to even try downloading something unless they have WiFi connected. However I can only seem to be able to tell if WiFi is enabled, but they could still have a 3G connection.
android.net.wifi.WifiManager m = (WifiManager) getSystemService(WIFI_SERVICE);
android.net.wifi.SupplicantState s = m.getConnectionInfo().getSupplicantState();
NetworkInfo.DetailedState state = WifiInfo.getDetailedStateOf(s);
if( state != NetworkInfo.DetailedState.CONNECTED ){
return false;
}
However the state is not what I would expect, even though WiFi is connected I am getting OBTAINING_IPADDR as the state.
Is there an app which does this, or an app which turns off background data when not connected to wifi?
View 3 Replies View RelatedI'm upset, folks. After months of trying, I STILL cannot find a single instant messaging app for my HTC Eris (2.1) that will STAY CONNECTED.I primarily want to connect to MSN (Windows Live, whatever they call it now) as well as Yahoo and AIM, though if I could only get MSN to work I'd be satisfied. However all the apps I've tried (ALL OF THEM!) behave the same way. Each one will connect, and either not show me as online to the rest of the world (verified my by gf), show my friends as not being signed in (when they actually are), and randomly disconnect me and NEVER RECONNECT ME unless I manually bring up the app on the screen. It's as if the apps have no connection to the IM's servers, or reality itself.I have tried MSN Talk, Meebo, Ebuddy, Nimbuzz. Each one of these claims to automatically reconnect if there's a problem, but NONE of them ACTUALLY DO. No matter what, I drop off, I'm shown as "signed out" to the outside world, and the apps will only reconnect (or pretend to reconnect) when I manually bring the app to the screen.I would expect that any IM might disconnect if I went out of signal range and came back, however this happens even when the signal is strong and uninterrupted. And it NEVER reconnects if I leave the phone alone. ONLY if I manually bring the IM app up does it even go through the motions of a reconnect.I can try messaging people even when it looks like it's connected to the server(s), but over half the time, the messages don't make it, because it's not REALLY connected at all.Again, this is using ALL IM apps I've tried so far.I refuse to believe that Android has ZERO working IM apps available, so... is there one that actually works properly? Is there some setting or tweak that will "keep-alive" the connection? Is there a problem with my Eris? Or... are there really no working IM apps for Android?
View 15 Replies View RelatedHow would i know whether my device is connected the web or not? How can i detect connectivity? Any sample code?
View 3 Replies View RelatedHow can i know if a BluetoothSocket is still connected to the endpoint? How can i detect if the socket has been disconnected by the endpoint?
View 2 Replies View RelatedAfter http://groups.google.com/group/android-developers/browse_frm/thread/1... I am using
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