hi Ben, by using you code, I encountered the problem, “The application
audiorecorder(process com.david.android.audiorecorder) has stopped
unexpectedly. Please try again”.
My audiorecoder class looks like as:
import android.app.Activity;
import android.os.Bundle;
//importing yours
…
public class audiorecorder extends Activity {
//then following your codes
…
}
Below is the Logcat info:
D/AndroidRuntime( 815): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<
D/AndroidRuntime( 815): CheckJNI is ON
D/AndroidRuntime( 815): — registering native functions —
I/jdwp ( 815): received file descriptor 25 from ADB
I/ActivityManager( 56): Starting activity: Intent { flags=0×10000000
comp={com.david.android.audiorecorder/com.david.android.audiorecorder.audiorecorder}
}
I/ActivityManager( 56): Start proc com.david.android.audiorecorder for
activity com.david.android.audiorecorder/.audiorecorder: pid=824 uid=10040
gids={}
D/AndroidRuntime( 815): Shutting down VM
D/dalvikvm( 815): DestroyJavaVM waiting for non-daemon threads to exit
D/dalvikvm( 815): DestroyJavaVM shutting VM down
D/dalvikvm( 815): HeapWorker thread shutting down
D/dalvikvm( 815): HeapWorker thread has shut down
D/jdwp ( 815): JDWP shutting down net…
D/jdwp ( 815): +++ peer disconnected
I/dalvikvm( 815): Debugger has detached; object registry had 1 entries
D/dalvikvm( 815): VM cleaning up
D/dalvikvm( 815): LinearAlloc 0×0 used 594756 of 4194304 (14%)
I/jdwp ( 824): received file descriptor 10 from ADB
D/dalvikvm( 824): newInstance failed: no ()
D/AndroidRuntime( 824): Shutting down VM
W/dalvikvm( 824): threadid=3: thread exiting with uncaught exception
(group=0×4000fe68)
E/AndroidRuntime( 824): Uncaught handler: thread main exiting due to
uncaught exception
E/AndroidRuntime( 824): java.lang.RuntimeException: Unable to instantiate
activity
ComponentInfo{com.david.android.audiorecorder/com.david.android.audiorecorder.audiorecorder}:
java.lang.InstantiationException:
com.david.android.audiorecorder.audiorecorder
E/AndroidRuntime( 824): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2082)
E/AndroidRuntime( 824): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2172)
E/AndroidRuntime( 824): at
android.app.ActivityThread.access$1800(ActivityThread.java:112)
E/AndroidRuntime( 824): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1586)
E/AndroidRuntime( 824): at
android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime( 824): at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime( 824): at
android.app.ActivityThread.main(ActivityThread.java:3790)
E/AndroidRuntime( 824): at java.lang.reflect.Method.invokeNative(Native
Method)
E/AndroidRuntime( 824): at java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime( 824): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:745)
E/AndroidRuntime( 824): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:503)
E/AndroidRuntime( 824): at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime( 824): Caused by: java.lang.InstantiationException:
com.david.android.audiorecorder.audiorecorder
E/AndroidRuntime( 824): at java.lang.Class.newInstanceImpl(Native Method)
E/AndroidRuntime( 824): at java.lang.Class.newInstance(Class.java:1458)
E/AndroidRuntime( 824): at
android.app.Instrumentation.newActivity(Instrumentation.java:1097)
E/AndroidRuntime( 824): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2074)
E/AndroidRuntime( 824): … 11 more
I/Process ( 56): Sending signal. PID: 824 SIG: 3
I/dalvikvm( 824): threadid=7: reacting to signal 3
I/dalvikvm( 824): Wrote stack trace to ‘/data/anr/traces.txt’
W/InputManagerService( 56): Starting input on non-focused client
android.view.inputmethod.inputmethodmanage...@43704540 (uid=1000 pid=56)
W/InputManagerService( 56): Ignoring focus gain of:
android.view.inputmethod.inputmethodmanage...@43704540
W/ActivityManager( 56): Launch timeout has expired, giving up wake lock!
W/ActivityManager( 56): Activity idle timeout for HistoryRecord{43852e68
{com.david.android.audiorecorder/com.david.android.audiorecorder.audiorecorder}}
D/dalvikvm( 100): GC freed 1763 objects / 93784 bytes in 135ms
I/Process ( 824): Sending signal. PID: 824 SIG: 9
I/ActivityManager( 56): Process com.david.android.audiorecorder (pid 824)
has died.
D/InputManagerService( 56): hide the small icon for the input method
V/ActivityThread( 100): Resuming ActivityRecord{436cc620
token=android.os.binderpr...@436cc0b0{com.android.launcher/com.android.launcher.Launcher}}
with isForward=false
I’m sorry if this mess-like info toubles again because I issued it at
https://mail.google.com/mail/?hl=en&zx=1mf4sjv3oovlo&shva=1#starred/11fd8b68c28f154b.
Could your please help me figure out what’s the real reason causing this
problem? Thanks a lot.
david
2009/3/12 benmccann <benjamin.j.mcc...@gmail.com>
>
> Finally got it figured out:
> http://www.benmccann.com/dev-blog/android-audio-recording-tutorial/
>
> On Mar 9, 11:37 am, benmccann <benjamin.j.mcc...@gmail.com> wrote:
> > I'm still feeling directionless when it comes to what
> > MediaRecorder.setOutputFile(String path) is expecting. Is it a
> > relative path? Is it a fully qualified path? Must the directory we
> > are recording in already exist, or will MediaRecorder create it for us
> > if it does not exist? What happens if we specify a file path which
> > already exists - will it override the existing file or will it bomb
> > out?
> >
> > On Mar 7, 10:30 pm, benmccann <benjamin.j.mcc...@gmail.com> wrote:
> >
> > > jdl, I'd be happy to post my code, but I still don't have a working
> > > example. I upgraded to the 1.1 SDK today in hopes that it fixed a bug
> > > and things would work for me, but it seems the media APIs are still
> > > hopelessly broken. All I ever get is the meaningless message "start
> > > failed". It looks like perhaps the cause is a buffer overflow in the
> > > native code:
> >
> > > 03-07 21:19:42.059: DEBUG/AudioHardware(25): AudioStreamInGeneric::set
> > > (0xac50, 7, 1, 1, 8000)
> > > 03-07 21:19:42.069: DEBUG/AudioHardware(25): AudioStreamInGeneric::read
> > > (0x40308020, 320) from fd 7
> > > 03-07 21:19:42.078: DEBUG/AudioHardware(25): AudioStreamInGeneric::read
> > > (0x40308160, 320) from fd 7
> > > 03-07 21:19:42.078: DEBUG/AudioHardware(25): AudioStreamInGeneric::read
> > > (0x403082a0, 320) from fd 7
> > > 03-07 21:19:42.078: DEBUG/AudioHardware(25): AudioStreamInGeneric::read
> > > (0x403083e0, 320) from fd 7
> > > 03-07 21:19:42.088: WARN/AudioFlinger(25): AudioRecordThread: buffer
> > > overflow
> > > 03-07 21:19:42.098: DEBUG/AndroidRuntime(185): Shutting down VM
> > > 03-07 21:19:42.098: WARN/dalvikvm(185): threadid=3: thread exiting
> > > with uncaught exception (group=0x4000fe68)
> > > 03-07 21:19:42.098: ERROR/AndroidRuntime(185): Uncaught handler:
> > > thread main exiting due to uncaught exception
> > > 03-07 21:19:42.128: DEBUG/AudioHardware(25): AudioStreamInGeneric::read
> > > (0x40308020, 320) from fd 7
> > > 03-07 21:19:42.128: DEBUG/AudioHardware(25): AudioStreamInGeneric::read
> > > (0x40308160, 320) from fd 7
> > > 03-07 21:19:42.128: ERROR/AndroidRuntime(185):
> > > java.lang.RuntimeException: start failed.
> > > 03-07 21:19:42.128: ERROR/AndroidRuntime(185): at
> > > android.media.MediaRecorder.start(Native Method)
> > > 03-07 21:19:42.128: ERROR/AndroidRuntime(185): at
> > > com.benmccann.android.hello.AudioRecorder.start(AudioRecorder.java:59)
> > > 03-07 21:19:42.128: ERROR/AndroidRuntime(185): at
> > > com.benmccann.android.hello.HelloAndroid$1.onClick(HelloAndroid.java:
> > > 31)
> >
> > > On Mar 6, 1:38 pm, benmccann <benjamin.j.mcc...@gmail.com> wrote:
> >
> > > > Bugs already exist:
> http://code.google.com/p/android/issues/detail?id=450&q=media%20docum....
> ..
> >
> > > > On Mar 5, 9:23 pm, Dave Sparks <davidspa...@android.com> wrote:
> >
> > > > > Log a bug athttp://b.android.com.
> >
> > > > > On Mar 5, 2:17 pm, jdl <j...@edufone.com> wrote:
> >
> > > > > > Diane or Dave,
> >
> > > > > > How do we go about requesting that someone from the Android
> project
> > > > > > update the Audio/Video tutorial,
> http://developer.android.com/guide/topics/media/index.html,
> > > > > > so that it works with the current version of the API?
> >
> > > > > > Thanks,
> > > > > > AN
> >
> > > > > > On Feb 28, 2:45 pm, Dianne Hackborn <hack...@android.com> wrote:
> >
> > > > > > > You use Context to get at your private data files:
> >
> > > > > > >
> http://developer.android.com/guide/topics/data/data-storage.html
> >
> > > > > > >
> http://developer.android.com/reference/android/content/Context.html#g...)
> >
> > > > > > > On Thu, Feb 26, 2009 at 2:40 PM, benmccann <
> benjamin.j.mcc...@gmail.com>wrote:
> >
> > > > > > > > >> each application has its own private data directory /
> > > > > > > > >> data/app-private/app-package. I believe your working
> directory is set
> > > > > > > > >> to this directory by default
> >
> > > > > > > > Cool. So it sounds like I should just be able to use a
> relative path
> > > > > > > > from the current location then. Unfortunately, I'm getting
> the
> > > > > > > > following exception (with no clues as to why start is
> failing):
> >
> > > > > > > > 02-26 14:34:55.132: ERROR/AndroidRuntime(164):
> > > > > > > > java.lang.RuntimeException: start failed.
> > > > > > > > 02-26 14:34:55.132: ERROR/AndroidRuntime(164): at
> > > > > > > > android.media.MediaRecorder.start(Native Method)
> >
> > > > > > > > Here's my code:
> >
> > > > > > > > final MediaRecorder recorder = new MediaRecorder();
> > > > > > > > recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
> > > > > > > >
> recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
> > > > > > > >
> recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
> > > > > > > > recorder.setOutputFile("test.3gpp");
> > > > > > > > recorder.prepare();
> > > > > > > > recorder.start();
> >
> > > > > > > > On Feb 26, 12:14 am, Dave Sparks <davidspa...@android.com>
> wrote:
> > > > > > > > > You can get the path to external storage (e.g. SD card)
> with
> > > > > > > > > Environment.getExternalStorageDirectory(). This is world
> read/
> > > > > > > > > writable.
> >
> > > > > > > > > Alternatively, each application has its own private data
> directory /
> > > > > > > > > data/app-private/app-package. I believe your working
> directory is set
> > > > > > > > > to this directory by default. This is onboard flash, so it
> will
> > > > > > > > > survive the user ejecting an SD card. However, there is a
> limited
> > > > > > > > > amount to go around, so you don't want to store monster
> media files
> > > > > > > > > there.
> >
> > > > > > > > > On Feb 25, 9:22 pm, benmccann <benjamin.j.mcc...@gmail.com>
> wrote:
> >
> > > > > > > > > > >> setOutputFile() expects a path to where you want the
> file stored.
> >
> > > > > > > > > > Yep, figured that much by the method name, but what's a
> valid path? I
> > > > > > > > > > mean I'm figuring it's UNIX-like, but other than that I'm
> in the
> > > > > > > > > > dark. Is there a preferred place for apps to store data?
> Are there
> > > > > > > > > > certain directories that I have permission to write to?
> What
> > > > > > > > > > directories exist on the device by default? It'd be nice
> for the docs
> > > > > > > > > > on data storage to mention any of these things:
> > > > > > > >
> http://developer.android.com/guide/topics/data/data-storage.html
> >
> > > > > > > > > > >> You can take a look at the source to SoundRecorder in
> the open
> > > > > > > > source tree for some working code
> >
> > > > > > > > > > Thanks for the example. This would be a much better
> example than the
> > > > > > > > > > one in the docs that won't compile and implies content
> must first be
> > > > > > > > > > added to a database:
> > > > > > > >http://developer.android.com/guide/topics/media/index.html
> >
> > > > > > > > > > On Feb 24, 8:03 pm, Dave Sparks <davidspa...@android.com>
> wrote:
> >
> > > > > > > > > > > setOutputFile() expects a path to where you want the
> file stored.
> >
> > > > > > > > > > > You can take a look at the source to SoundRecorder in
> the open source
> > > > > > > > > > > tree for some working code:
> >
> > > > > > > >
> http://android.git.kernel.org/?p=platform/packages/apps/SoundRecorder...
> >
> > > > > > > > > > > On Feb 24, 4:43 pm, benmccann <
> benjamin.j.mcc...@gmail.com> wrote:
> >
> > > > > > > > > > > > Hi,
> > > > > > > > > > > > I'd like to create anaudiorecordingin Android.
> (Actually, I just
> > > > > > > > > > > > want access to the mic withoutrecordingit, but it
> seems that's not
> > > > > > > > > > > > supported so I'll have to create arecordingand tail
> the file).
> > > > > > > > > > > > I'm having a very hard time getting started. Mostly
> I'm just
> > > > > > > > hoping
> > > > > > > > > > > > that someone from Google reads this and will update
> the
> > > > > > > > documentation
> > > > > > > > > > > > because the example won't compile - it looks like
> it's from some
> > > > > > > > > > > > previous version of the SDK because there's an error
> in every other
> > > > > > > > > > > > line. I made my best guess as to what the usage
> should be, but I
> > > > > > > > keep
> > > > > > > > > > > > getting a number of different exceptions.
> > > > > > > > > > > > One question I had is whether I can just specify an
> arbitrary path
> > > > > > > > to
> > > > > > > > > > > > the MediaRecorder to startrecordingor whether I have
> to create an
> > > > > > > > > > > > entry in the content database. The JavaDoc for
> > > > > > > > > > > > MediaRecorder.setOutputFile isn't clear on what it's
> expecting.
> >
> > > > > > > > > > > > Thanks,
> > > > > > > > > > > > Ben
> >
> > > > > > > --
> > > > > > > Dianne Hackborn
> > > > > > > Android framework engineer
> > > > > > > hack...@android.com
> >
> > > > > > > Note: please don't send private questions to me, as I don't
> have time to
> > > > > > > provide private support. All such questions should be posted
> on public
> > > > > > > forums, where I and others can see and answer them.
> >
>
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