Attempt to invoke virtual method int java lang integer intvalue on a null object reference

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Attempt to invoke virtual method ‘int java.lang.Integer.intValue()’ #5
Attempt to invoke virtual method ‘int java.lang.Integer.intValue()’ #5
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Attempt to invoke virtual method ‘int java.lang.Integer.intValue()’ on a null object reference #10
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Attempt to invoke virtual method ‘int java.lang.Integer.intValue()’ on a null object reference #2327
Attempt to invoke virtual method ‘int java.lang.Integer.intValue()’ on a null object reference #2327
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Switch component error «attempt to invoke virtual method ‘int java.lang.Integer.intValue()’ on a null object reference» #3587
Switch component error «attempt to invoke virtual method ‘int java.lang.Integer.intValue()’ on a null object reference» #3587
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Attempt to invoke virtual method ‘int java.lang.Integer.intValue()’ #5

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For starters, thanks for this great plugin.

I’m encountering a problem on Android only, when i extract the data from the audio file I get this error

PlatformException(Attempt to invoke virtual method ‘int java.lang.Integer.intValue()’ on a null object reference, null, null, null)

I’m using the same code from the example with a few modifications

final audioFile = File(widget.audioFilePath); try < final dir = await getApplicationDocumentsDirectory(); final waveFile = File('$/waveform.wave'); JustWaveform.extract( audioInFile: audioFile, waveOutFile: waveFile, zoom: WaveformZoom.pixelsPerSecond( pixelPerSecond.ceil(), ), ).listen(_progressStream.add, onError: _progressStream.addError); > catch (err)

I’m having this problem on an Android device on 9.0.

The text was updated successfully, but these errors were encountered:

Yes sure, thanks for the quick response.

I/System.out(18165): extractor format = I/System.out(18165): channel count = 1 I/System.out(18165): sample rate = 44100 I/System.out(18165): expected sample count = 200704 I/System.out(18165): samples per pixel: 678 = 44100 / 65 I/System.out(18165): scaled samples length = 592 E/libc (18165): Access denied finding property "ro.kirin.product.platform" E/HwExtendedCodec(18165): mime: audio/mp4a-latm matching compontent failed! I/OMXClient(18165): IOmx service obtained I/ACodec (18165): In onAllocateComponent create compenent, codec name: OMX.google.aac.decoder W/HwExtendedUtils(18165): hw configLocalPlayBack err = -2147483648 I/ACodec (18165): onStart W/System.err(18165): java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.Integer.intValue()' on a null object reference W/System.err(18165): at android.media.MediaFormat.getInteger(MediaFormat.java:979) W/System.err(18165): at com.ryanheise.just_waveform.WaveformExtractor.processAudio(WaveformExtractor.java:141) W/System.err(18165): at com.ryanheise.just_waveform.WaveformExtractor$ProcessThread.run(WaveformExtractor.java:71) I/System.out(18165): invokeMethod onError(Attempt to invoke virtual method 'int java.lang.Integer.intValue()' on a null object reference) W/ACodec (18165): forcing OMX state to Idle when received shutdown in ExecutingState

Thanks, that is helpful. That means the error is occurring on this line (141):

outFormat.setInteger(MediaFormat.KEY_BIT_RATE, inFormat.getInteger(MediaFormat.KEY_BIT_RATE));

which means that the input format didn’t contain the KEY_BIT_RATE field. This should be guarded against nulls.

I will take a look at my next chance, but that may also give you some ideas on how to make your local copy work in the meantime.

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