I am trying to develop an application with Android 1.5(cupcake_r1) for a week but always get an error reported in prepare of MediaRecorder. Can anybody help me to figure out the problem I got in the code below:
PS. In order to figure out the problem, I suppressed the audio recording, and the SDcard is installed in the phone.code...
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I am trying to write a sample program to record the video (say camcorder application). When i run my program using the emulator (I have android-sdk- windows-1.5_r3) I see java.io.IOException: prepare failed. error in logcat output.
Further I can see that I have came across this error when i call MediaRecorder.prepare() from CamcorderActivity.surfaceCreated() But I am surprised to see that activity got launched and I am seeing the camera preview! Again the preview is seen only in half of the screen! Its weird!!!
Further when i do recorder.start() to record the video I get java.lang.IllegalStateException. Yes this is obvious since the prepare () has failed. But the question is why prepare() has failed ?
Here is my code ... package com.example;
CODE:................
What is the preferred way of reusing a MediaPlayer when using resources? My try looks a bit ... too complicated... so maybe I should be happy to see that it didn't work. (I run the Android 1.5 SDK and emulator.)
According to this thread my problem may be a permission problem. http://groups.google.se/group/android-developers/browse_thread/thread...
I get the same error. But in my case it only occurs when I use FileDescriptor!?! The use case differs however, because I use a resource stored in the bundle. I have s0.mp3 safely stored in the project /res/raw and it successfully plays when I use SoundPool or MediaPlayer.create. And the log print tells me I referenced the correct file and stay safely in my package.
I'm sure my way of getting the fd out from a package resource is the problem, I didn't find any other way... But why didn't setDataSource throw the exception instead of a printout? And why on earth is the same resource happily played one way but not the other? Seems like a design flaw rather than a security raise. Should I look in the MediaPlayer.create code to see how they get around the problem or can you help me understand how it works?
This is a test code snippet: (from onCreate of a simple Activity)
CODE:...........
And the error:
CODE;..............
I'm trying to initialize OpenFeint in my game like this:
CODE:...........
Result: 1. OpenFeint initialization sometimes take so song(network actions?). It blocks the main thread. 2. My application remains in onCreate() for too long. 3. My Dev Phone One display ANR(application not responding) dialog prompting me to choose between 'Force Close' and 'Wait' 4. Soon after that, OpenFeint has done its things and my game shows up behind the dialog. 5. Now pressing 'Wait' will dismiss the ANR dialog and I can continue my game properly.
But obviously we don't want ANR dialog. So now I put it in a Thread like this:
CODE:...............
----------------------------------------------------------------------------- Result: Problem solved. Everything seems to run fine now.
I put Looper.prepare() there because my game will crash if I don't. The log message told me to put it there. I put Looper.loop(); there because OpenFeint will not initialize at all if I don't. I've read the doc about Looper but honestly I don't understand what the doc says.
Question 1. The doc also tell me this: ------------------------------------------------- public static final void loop ()
Since: API Level 1 Run the message queue in this thread. Be sure to call quit() to end the loop. -------------------------------------------------- Can anyone explain when & where should I call quit()?
Question 2 What will happen if I don't call Looper.quit()?
Question 3 Let me ask this straight. Am I taking the correct approach? Is there some kind of loop running alongside my game all the time if I do this?
Playing around with the UI and SQLLite for a while and it looks pretty good to me . We have a requirement that for the App that all the questions would be coming from the server through REST / Web service which would be displayed on the App..
say for e.g if there are 4 questions
1) Enter your Name -- Text Box
2) Did you sleep well last night -- YES / NO
3) How many hours did you sleep - Text Box
4) How did you hear about us -- Drop down
So the requirement is that the Questions would be displayed on the App after doing a SYNC with the server during the SYNC with the server the Questions would be downloaded from the SERVER through REST / Web service..if the phone is not connected then pull the questions from the Database...
These questions are simple questions and they change quite often and we have a similar app which is there for iphone which does this ....
I'm trying to build a simple video recorder for an Android device and I've had limited success and mixed results. It worked once, but now, without changing anything, I'm getting a "Camera is not available" error followed by "prepare failed -2147483648" error.
View 1 Replies View RelatedI am preparing a contacts application and would like to support the VCard export. Can anyone tell me if there is any API I can use to create a VCard.
View 4 Replies View RelatedIn the API Demo, there is example on using Simple Cursor Adapter. However, it is using the MediaS tore cursor. Is there any method so that I can use other external cursor prepare by SQL database. I don't know what should I input to the from String.
View 2 Replies View RelatedI have a situation where my MediaRecorder instance causes a segfault. I'm working with a HTC Hero, Android 1.5+APIs. In the log i see (after the segfault announcement) a register dump and then a numbered list #00 libmedia_jni.so to #18 linker, then a stack trace. My Eclipse won't let me copy the log buffer, but I've done three screen captures that sum it up. If you have time to examine, send me a direct e-mail.<pre><code> if (mRecorder == null) mRecorder = new MediaRecorder(); mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); mRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4); mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); mRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);// mRecorder.setVideoSize(640, 480); // mRecorder.setVideoFrameRate(20); mRecorder.setPreviewDisplay(surfaceHolder.getSurface()); mRecorder.prepare();mRecorder.start(); </code></pre> I've tried other variants, including H263 and 3gp. What else can I do to debug this? Everythin g seems fine up to prepare(). I tried adding the onErrorListener, but it seems to interfere with the MediaPlayer's onErrorListener. I'm using a 4-second beep-count to prepare for auto triggering of the camera, and when I enable the error handler for the MR everything in my handler state machines goes awry.
View 4 Replies View RelatedDoes anyone know how to use the MediaRecorder to API to capture video?
I am writing an application where I want to be able to capture video. I am trying to use the MediaRecorder API in 1.5, which is supposed to support video capture. However, there are no examples in the documentation on how to use this API for video (only for audio, and that works perfect). Basically what I do is the following:
CODE:...............
This gives me the following error: E/CameraInput( 37): No surface is available for display E/MediaRecorder( 7609): prepare failed: -2147483648
OK, so I have to have a surface to preview the video? Could be useful I guess, but not something I really need.
Could I use the VideoView widget for this, or is that only for playback?
Or am I supposed to use a SurfaceView to preview the video? I saw someone use that to capture images, but they used android.hardware.Camera to open the camera and capture a frame, and did not use MediaRecorder.
HOw to capture video, or even better have some example code?
Since no one knows when the update is going to come to the Droid. Could be tomorrow or in three months. Its all up in the air. It could happen anytime. Anyways, What do you need to do?
Have a battery near full all the time?
Backup your Aps?
Backup contacts?
Since I am assuming you can get the update without warning, I just wanted to know what steps to take, so I can have no problems with an OTA update.
I am trying to test my application with location information.
You know the Emulator Control has an ability to load from KML file. (Eclipse -> DDMS -> Emulator Control -> Location Controls -> KML -> Load KML...)
I've prepared KML file using Google earth application with its "Add path". Then saved it by .kml extension and load it on the Eclipse. Eclipse didn't load this KML file.
How to prepare KML file for Android Emulator Control?
With reference to this discussion, does this mean that simultaneous Record and Playback with Mediarecorder and Mediaplayer is not possible at this point?
View 3 Replies View RelatedI want to get the stream and send it to server directly by using MediaRecorder.
Actually, I am able to record the video,and able to store it into sdcard. Now I want to it to stream (live stream) to server rather than storing it.
I'm using MediaRecorder.setOutputFile(FileDescriptor fd) over a UNIX socket, so that local code on the device can see the encoded stream in real time (for video streaming out).
What I observed is that the encoder doesn't write encoded frames continuously, when they are produced, but by "bursts", exactly one second apart. I tried both containers (THREE_GPP and MPEG_4) and all three available codecs (MPEG_4_SP, H263, H264), the behavior is always the same. This one-second period is notably unrelated to framerate or bitrate, so it is not flushing by size; rather, it seems to be flushing by time (possibly to mask SD card write overheads ? Bummer, I 'm not using the SD here !). Is it a known limitation ? Is there a known workaround ?
Is anyone else experiencing poor playback quality on files recorded with MediaRecorder? Is there a way to improve this?
View 4 Replies View Relatedthe location where the audioflinger, surfaceflinger and cameraservice talk to MediaRecorder's APIs? Is there any relation between MediaRecorder and AudioRecord?
View 6 Replies View RelatedI wrote a code to record audio of call conversation using MediaRecorder.
how can i know whether a MediaRecorder is in running state or not, to stop the recording.
like
CODE:............
Above code is just an example.. If you do not understand my question, please tell me.. i will explain clearly with actual code..
What all i want to know is "In which state the MediaRecorder is?" -> recording/released/prepared/initial/etc..
When I record audio with the MediaRecorder, I am consistently getting .65 seconds of dead space before the recording starts. It appears as if the file gets passed for some reason. Does anyone know why and better yet, how to eliminate this?
View 2 Replies View RelatedCan you please tell me how can I keep the MediaRecorder keeps recording after an orientation change? I try looking into source code of packages/apps/SoundRecorder/src/com/android/soundrecorder/Recorder.java, I don't see it handles that cases.
View 1 Replies View RelatedWhat does the following exception mean? And how can I fix it?
This is the code:Toast toast = Toast.makeText(mContext, 'Somthing', Toast.LENGTH_SHORT);
This is the exception:
D/VVM ( 684): java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
D/VVM ( 684): at android.os.Handler.(Handler.java:121)
D/VVM ( 684): at android.widget.Toast.(Toast.java:68)
D/VVM ( 684): at android.widget.Toast.makeText(Toast.java:231)
Why android doesn't permit to record audio from speakers, for example in incoming calls ?
I've searched in the web and there is no way to record incoming stream audio...the only why is the follow :
Java: MediaRecorder recorder = new MediaRecorder(); recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
that records from microphone. Why this terrible bug?
I have founded some app that records incoming calls,
Dear PV engineer: I have try several days for this. We want to add video conference function in PV opencore, so we need to create video capture node in native mode, I try the following code to capture video, My code is like this:
CODE:......................
Is there a way to get the best quality of video recording possible using MediaRecorder? the camcorder app does a lot better in terms of quality.
View 5 Replies View RelatedWhen I record video by MediaRecorder, it always records in landscape mode, regardless of real device orientation. How to force MediaRecorder/Camera use real orientation ?
View 1 Replies View RelatedI try to use the MediaRecorder class to record a video but I get an exception : failed to get Camera parameters. Prepare failed.
Here's my code :
CODE:.....................
I am trying to use the MediaRecorder to record audio. I read the documentation at http://developer.android.com/reference/android/media/MediaRecorder.html on how to use the MediaRecorder and then tried the sample code given in the documentation for recording audio which is:
MediaRecorder recorder = new MediaRecorder(); recorder.setAudioSource(MediaRecorder.AudioSource.MIC); recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); recorder.setOutputFile(PATH_NAME); recorder.prepare(); recorder.start(); // Recording is now started ... recorder.stop(); recorder.reset(); // You can reuse the object by going back to setAudioSource() step recorder.release(); // Now the object cannot be reused
However this code doesn't seem to work. The second line throws an exception when I execute the code. If I execute the following two lines of code:
MediaRecorder recorder = new MediaRecorder(); recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
It throws a RuntimeException on the call to setAudioSource with the exception message "setAudioSource failed." I am running this on my T- Mobile HTC G1 Android device which is running Android v1.6
I have searched a number of forums for entries about "MediaRecorder" or "setAudioSource" and have found that a number of other people have also posted that they are having a similar problem. However no one has responded to any of the posts which I found regarding this issue.
I would appreciate some help if anyone knows why the MediaRecorder is not working as documented or can provide information on how to get past this exception.
Looker, lookie, new Aria ROM to allow OTA firmware updates, plus two other bug fixes. I think they are gearing up for Android 2.2, HTC Mobile Phone Support - HTC Aria? (AT&T) - Downloads
View 1 Replies View RelatedI'm trying to use android.media.MediaRecorder to record video, and no matter what I do the android runtime segmentation faults when I call prepare().
Here's an example:
CODE:....................
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.