How to make a beep in android?

Question

I would like my app beep with a specific frequency and duration. In the windows equivalent of this app (written in c#) I used a c++ dll with the function

beep(frequency, duration);  

Is this the same in android? Or at least how can I put my c++ dll in the project?

I would prefer not to use pre-built mp3's or system sound because I would like to give the user the choice of the frequency and duration.

Answer 1

I tried amine.b's answer. In short, to play a loud Beep sound:

ToneGenerator toneG = new ToneGenerator(AudioManager.STREAM_ALARM, 100); toneG.startTone(ToneGenerator.TONE_CDMA_ALERT_CALL_GUARD, 200);  

Answer 2

The easy way is to use instance of ToneGenerator class:

// send the tone to the "alarm" stream (classic beeps go there) with 50% volume ToneGenerator toneG = new ToneGenerator(AudioManager.STREAM_ALARM, 50); if (val >= taux_max) {     taux_text.setTextColor(warnning_col);     toneG.startTone(ToneGenerator.TONE_CDMA_ALERT_CALL_GUARD, 200); // 200 is duration in ms } 

Please refer to the documentation of ToneGenerator and AudioManager for exact meaning of parameters and possible configuration of the generator.