import com.android.internal.telephony.ITelephony; try{ tm = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE); Class c = Class.forName(tm.getClass().getName()); Method m = c.getDeclaredMethod("getITelephony"); m.setAccessible(true); ITelephony telephonyService = (ITelephony) m.invoke(tm); String phone_no= editText.getText().toString().replaceAll("-", ""); // Call Number (String Type)..

Intent i = new Intent(context, AutoRedialActivity.class );PendingIntent pi = PendingIntent.getActivity(context, 0, i, PendingIntent.FLAG_ONE_SHOT);try { pi.send();} catch (CanceledException e) { e.printStackTrace();}

getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);

new CountDownTimer(5000, 1000L){ // 5초 동안, 1초 마다 public void onTick(long millisUntiFinished){ Log.i(TAG, "Timer : " + (millisUntiFinished/1000L)); // Tick 마다 수행 할 동작 } public void onFinish(){ // Timer 종료 시 수행 할 동작 }}.start();

Intent intent = new Intent(); intent.setAction(Intent.ACTION_MAIN);intent.addCategory(Intent.CATEGORY_HOME);startActivity(intent); 요걸 좀 응용하게 하면 죽지 않는 Activity를 만들어 낼 수 있다.

private WifiManager mWifiManager; mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE); mWifiManager.setWifiEnabled(true);