start failed

[moloudayat]

I used start and stop in document but I get this error from android studio and in my emulator it simply said start failed. I dont know what to do I'm new in audio.

    java.lang.RuntimeException: start failed.
        at android.media.MediaRecorder.start(Native Method)
        at com.kevinresol.react_native_sound_recorder.RNSoundRecorderModule.start(RNSoundRecorderModule.java:119)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.facebook.react.bridge.JavaMethodWrapper.invoke(JavaMethodWrapper.java:372)
        at com.facebook.react.bridge.JavaModuleWrapper.invoke(JavaModuleWrapper.java:158)
        at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)
        at android.os.Handler.handleCallback(Handler.java:751)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:29)
        at android.os.Looper.loop(Looper.java:154)
        at com.facebook.react.bridge.queue.MessageQueueThreadImpl$4.run(MessageQueueThreadImpl.java:232)
        at java.lang.Thread.run(Thread.java:761)

//################my code####################

_playPause = () => {
        SoundRecorder.start(SoundRecorder.PATH_CACHE + '/test.mp4')
            .then(function () {
                console.log('started recording');
            });
    }

    _stop = () => {
        SoundRecorder.stop()
            .then(function (result) {
                console.log('ddd stopped recording, audio file saved at: ' + result.path);
            });
    }

    render() {
        return (
            <View>
                <View >
                    <Button title={'start recording'} onPress={this._playPause} />
                    <Button title={'Stop'} onPress={this._stop} />
                </View>
            </View>
        )
    }```

[kevinresol]

You need to request permission from user first.