How to always check a condition in Android?

Question

I want to develop an app to toggle the device's audio status. If the audio status is silent then my button's text should be "silent", if it's normal the text should be "normal"

Here is my only class:

public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    final Button btn1= (Button) findViewById(R.id.btn1);
    final AudioManager audio = (AudioManager)getSystemService(Context.AUDIO_SERVICE);

    if (audio.getRingerMode()==AudioManager.RINGER_MODE_NORMAL)
    {
        btn1.setText("Normal");
    }
    else if (audio.getRingerMode()==AudioManager.RINGER_MODE_SILENT)
    {
        btn1.setText("Silent");
    }

    btn1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            btn1.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if (audio.getRingerMode()==AudioManager.RINGER_MODE_NORMAL)
                    {
                        audio.setRingerMode(AudioManager.RINGER_MODE_SILENT);
                        btn1.setText("Silent");
                    }
                    else if (audio.getRingerMode()==AudioManager.RINGER_MODE_SILENT)
                    {
                        audio.setRingerMode(AudioManager.RINGER_MODE_NORMAL);
                        btn1.setText("Normal");
                    }
                                      }
            });
        }
    });

How can I always check this condition in Android ?

What's the problem you are having? It seems like this should work fine. — Benjamin Lowry, Feb 15 '16 at 13:48
@BenjaminLowry my problem is that if user change audio the text of button does not change until the button pressed , i want to button text change immediately — Hossein, Feb 15 '16 at 13:50
@Rohit5k2 i change it with your guidance but i want to text of button always update and show audio status of phone — Hossein, Feb 15 '16 at 14:12
@Hossein: Please try my answer. This code would go inside `onCreate`. — Rohit5k2, Feb 15 '16 at 14:28

Rohit5k2 · Accepted Answer · 2016-02-15T14:30:36.200

If you need to get the mode of current ringer even if it was changed outside from you application context then you should register a BroadcastReceiver for AudioManager.RINGER_MODE_CHANGED_ACTION.

This receiver will be called everytime someone changes the ringer mode.

Do this inside onCreate.

BroadcastReceiver receiver=new BroadcastReceiver(){
    @Override
    public void onReceive(Context context, Intent intent) {
          if (audio.getRingerMode()==AudioManager.RINGER_MODE_NORMAL)
          {
              btn1.setText("Silent");
          }
          else if (audio.getRingerMode()==AudioManager.RINGER_MODE_SILENT)
          {
              btn1.setText("Normal");
          }
    }
};

IntentFilter filter=new IntentFilter(AudioManager.RINGER_MODE_CHANGED_ACTION);
registerReceiver(receiver,filter);

score 0 · Answer 2 · edited Feb 15 '16 at 14:11

0

Just do this

btn1.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        if (audio.getRingerMode()==AudioManager.RINGER_MODE_NORMAL)
        {
            audio.setRingerMode(AudioManager.RINGER_MODE_SILENT);
            btn1.setText("Silent");
        }
        else if (audio.getRingerMode()==AudioManager.RINGER_MODE_SILENT)
        {
            audio.setRingerMode(AudioManager.RINGER_MODE_NORMAL);
            btn1.setText("Normal");
        }
    }
});

what your are doing is

btn1.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        btn1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (audio.getRingerMode()==AudioManager.RINGER_MODE_NORMAL)
                {
                    audio.setRingerMode(AudioManager.RINGER_MODE_SILENT);
                    btn1.setText("Silent");
                }
                else if (audio.getRingerMode()==AudioManager.RINGER_MODE_SILENT)
                {
                    audio.setRingerMode(AudioManager.RINGER_MODE_NORMAL);
                    btn1.setText("Normal");
                }
             }
        });
    }
});

edited Feb 15 '16 at 14:11

Rohit5k2

17,948
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answered Feb 15 '16 at 13:52

Usman R

76
6

pls explain that to me – Hossein Feb 15 '16 at 13:55
You have nested `onClickListener`, remove that nesting. – Rohit5k2 Feb 15 '16 at 13:56
its ok but my Question is another thing i want to check silent/normal always in my app and with change to this status , change text of button automatically... @Rohit5k2 – Hossein Feb 15 '16 at 13:59
in app or in this current activity? – Usman R Feb 15 '16 at 14:06
i want to text of button always update and show audio status of phone.... @Usman – Hossein Feb 15 '16 at 14:10
try to use broadcast receiver.might be it will work for you – Usman R Feb 15 '16 at 14:12

How to always check a condition in Android?

2 Answers2