AudioManager audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
audioManager.getRingerMode() == AudioManager.RINGER_MODE_SILENT : 사일런트 모드일 경우
audioManager.getRingerMode() == AudioManager.RINGER_MODE_VIBRATE : 진동모드일 경우
audioManager.getRingerMode() == AudioManager.RINGER_MODE_NORMAL : 벨 모드일 경우
audioManager.setRingerMode(AudioManager.RINGER_MODE_NORMAL);  //
audioManager.setRingerMode(AudioManager.RINGER_MODE_VIBRATE); //진동
audioManager.setRingerMode(AudioManager.RINGER_MODE_SILENT); //무음


String naasdndsafnfdsankqwnpe= "글씨";
TextView t = (TextView)findViewById(R.id.text);        
t.setText(Html.fromHtml("<u>" + naasdndsafnfdsankqwnpe+ "</u>")); // 밑줄



Vibrator vibe;


vibe = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);


vibe.vibrate(1000);



<uses-permission android:name="android.permission.VIBRATE"></uses-permission> 권한

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