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.
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I 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 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 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 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:
CODE:....................
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:
CODE:..............
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.
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 :
CODE:..........
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'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 Relatedwhat 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 see if user applications can READ the framebuffer e.g. / dev/graphics/fb0. I find that there is a permissions flag "android.permission.READ_FRAME_BUFFER", but there is no API, which can be used to grab the frame buffer.Is there a plan to provide an API for reading the frame buffer in future android releases?
View 3 Replies View RelatedI am reading the following URL to test a RSS parser. http://newsrss.bbc.co.uk/rss/newsonline_uk_edition/uk/rss.xm
When using the same code on a Android HTC phone the whole resource cannot be read. There are no exceptions being thrown. I am guessing the rss.xml is too large to be read in? I use a sax parser after the block of code which complains. Code...
Say I'm on cnn.com and I'm driving and want to hear the text.
Is there an application that will do this?
1. Compose a new message in GMail. (If you are still without a GMail account, request a GMail Invitation code)
2. Attach any PDF or Word document that you want to convert to HTML You can attach multiple files in this step by clicking Attach another File.
3. Enter your own email address in the To: box and click send.
4. You instantly receive a message in your GMail Inbox folder. Open the message and automatically it will view your PDF attachment as HTML.
5. The contents of your attachment appear as HTML in a new browser window without having to download the file. When you're finished reading the attached file, close the new browser window to return to Gmail.
If i have a apk file and want to know the package name and class hierarchy, how do i do it?
Suppose I have some sample APK file named "SampApp.apk" which contains classes inside "com.android.sampApp".
Is there any tool in Android SDK which shows the package name when APK file is passed as a parameter.
As the Class files are compressed to dex file I am not able to check the actual package name.
all in my application I want to read data from web page. if data at web page is upto 800kb then I am able to read it succesfully, but if data is larger then I get OutofMemoryException.I think it is because I am using condition as while ((inputLine = in.readLine()) != null) and in phone there is not much memory to read such a long string. I think I must have to read some part of string then write that part into some file in phone and read another part of string and write into phone but I don't know how to do that? Please help me solve this issue.
View 5 Replies View RelatedFrom different post i have concluded that insertion, deletion and updation in Calendar is only possible by using g-data.
View 1 Replies View RelatedI am facing some problem during reading data from socket If there is some null data in socket stream so the DataInputStream would not read the full data and the so at the receiving end there is exception for parsing data.What is the right way to read the data from socket so there is no loss of data at any time ?
View 3 Replies View RelatedI'm coming from BlackBerry to Android and two favorite apps were Viigo and FreeRange with their built-in full article reading support. Is anything available for Android with similar functionality. Opening up a browser to read full articles is so clunky. I'd be willing to pay for one. I've tried some of the existing free Android offerings, but they all open full versions in a browser.
View 7 Replies View RelatedI'm running into a strange problem while reading from an InputStream on the Android platform. I'm not sure if this is an Android specific issue, or something I'm doing wrong in general.
The only thing that is Android specific is this call:
CODE:........
This returns an InputStream for a file from the Android assets. Anyways, here's where I run into the issue:
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When the read() executes it throws an IOException. The weird thing is that if I do two sequential single byte reads (or any number of single byte reads), there is no exception. Ie, this works:
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Any idea why two sequential single byte reads work but one call to read both at once throws an exception? The InputStream seems fine... is.available() returns over a million bytes (as it should).
Stack trace shows these lines just before the InputStream.read():
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Changing the buffer size to a single byte still throws the error. It looks like the exception is only raised when reading into a byte array.
I like to know some application to read out Ebooks and docs I have in SD card. I am very new to android.
View 1 Replies View RelatedI want to use Kindle for my Feedbooks but have run into a problem. Before I actually bought anything from Amazon, I was able to use the Kindle app with my Feedbooks as the folder "kindle" was on my sd card and that's where I stored my Feedbooks. (I had to do a workaround and download the books to my pc and then transfer them to the kindle folder on the sd card because I couldn't download the files directly to my phone -- but it worked).
When I bought my first book from Amazon, however, it caused the Kindle app to force close every time I tried to open it. I called Amazon and they told me to delete the "kindle" folder on the sd card but they didn't tell me how to be able to use the Kindle app to read my feedbooks.