Disable sound just for one application

问题

Is it possible to turn off all sounds of just one app and to save the choice until the next start of the app?

So I have a ToggleButton at the StartActivity and by pressing this Button, all sounds of the app should be deactivated, but sounds of other apps should still be working.

I tried it with Preferences, using the SharedPreferences class, an xml file and so on, like in my book. But going through the introduction i realized, that the Preferences are just a way to save data permanent. So I would have to include for example on every Button with a sound an if-clause that checks if this or that saved preference for sound on/off is true/false and then activates/deactivates the sound?

I thought that it could be easier?

回答1:

Actually, if you want to disable a sound in your application - you can just don't play it. You can store the flags for each sound you want to play in the SharedPreferences and check it every time you want to play a sound. It's really easy!

回答2:

You can probably write your own MyButton class that extends Button and override onClick.

回答3:

Declare a string

String strSound;
enter this line in your shared preference settings

strSound = prefs.getString("sound", "on");
enter this line in your onActivityResult

strSound = prefs.getString("sound", "on");

put this lines in your media player which is used to give sounds for your application

private void playSound()
{
mp = MediaPlayer.create(MyActivity.this, R.raw."your_soundfile_name");

mp.setOnCompletionListener(new OnCompletionListener() 
{
    @Override
    public void onCompletion(MediaPlayer mp) 
    {
        mp.release();
    }
}); 
if(strSound.equals("on"))
mp.start();

now put this lines on your toggle button activity

your_togglebutton_id.setOnCheckedChangeListener(new     CompoundButton.OnCheckedChangeListener()
{
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
    {
        prefs = getSharedPreferences(prefName, MODE_PRIVATE);
        SharedPreferences.Editor editor = prefs.edit();
        if (isChecked)
        {
            editor.putString("sound", "on");
            editor.commit();
        }
        else
        {
            editor.putString("sound", "off");
            editor.commit();
        }
    }
}

来源：https://stackoverflow.com/questions/7236678/disable-sound-just-for-one-application

标签

android

audio

preferences