12-2. 알람

※ 알람의 종류

1. 1회만 발생
2. 주기적으로 발생(별도의 stop기능을 구현하지 않으면 지속적으로 울린다)

※ 구현

MainActivity

public class MainActivity extends Activity {

      

      Button btnOneAlarm;

      Button btnCycleAlarm;

      Button btnStopAlarm;

      AlarmManager alarmManger;

      

      @Override

      protected void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.activity_main);

            btnOneAlarm = (Button) findViewById(R.id.bt_start_one_alarm);

            btnCycleAlarm = (Button) findViewById(R.id.bt_start_cycle_alarm);

            btnStopAlarm = (Button) findViewById(R.id.bt_stop_cycle_alarm);

            btnOneAlarm.setOnClickListener(listener);

            btnCycleAlarm.setOnClickListener(listener);

            btnStopAlarm.setOnClickListener(listener);

            

            alarmManger = (AlarmManager) getSystemService(ALARM_SERVICE);

      }

   

      private void oneAlarm(){

            Intent intent = new Intent(MainActivity.this, SecondActivity.class);

            intent.putExtra("str", "value");

            //앱이 종료되어도 알람이 울려야 하므로 사용한다.

            PendingIntent pendingIntent = PendingIntent.getActivity(MainActivity.this, 0, intent, 0);

            

            //일회성에선 set을 사용

            alarmManger.set(AlarmManager.RTC, System.currentTimeMillis()+3000, pendingIntent);

      }

      

      private void cycleAlam(){

            Intent intent = new Intent(MainActivity.this, MainActivity.class);

            intent.putExtra("str", "value");

            PendingIntent pendingIntent = PendingIntent.getActivity(MainActivity.this, 0, intent, 0);

            

            //cycle에선 setRepeating을 사용 3초후에 알림이 울리고 주기적으로 5초 간격으로 알람이 울린다.

            alarmManger.setRepeating(AlarmManager.RTC, System.currentTimeMillis()+3000,5000, pendingIntent);

      

      }

      

    OnClickListener listener = new OnClickListener() {

            

            @Override

            public void onClick(View v) {

                  // TODO Auto-generated method stub

                  switch (v.getId()) {

                  case R.id.bt_start_one_alarm:

                        oneAlarm();

                        break;

                  case R.id.bt_start_cycle_alarm:

                        cycleAlam();

                        break;

                  case R.id.bt_stop_cycle_alarm:

                        Intent intent = new Intent(MainActivity.this, MainActivity.class);

                        PendingIntent pendingIntent = PendingIntent.getActivity(MainActivity.this, 0, intent, 0);

                        alarmManger.cancel(pendingIntent);

                        break;

                  default:

                        break;

                  }

            }

SecondActivity

public class SecondActivity extends Activity {

      

      AlarmManager alarmManger;

      

      @Override

      protected void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.activity_second);

            

            alarmManger = (AlarmManager) getSystemService(ALARM_SERVICE);

            

            Intent intent = getIntent();

            String s = intent.getStringExtra("str");

            

            TextView tv = (TextView) findViewById(R.id.tv_01);

            tv.setText(s);

            

      }

}

activity_main

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:orientation="vertical"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.example.android_20_2_ex1.MainActivity" >

    <Button

        android:id="@+id/bt_start_one_alarm"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="One Alarm" />

   

    <Button

        android:id="@+id/bt_start_cycle_alarm"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="Cycle Alarm" />

   

    <Button

        android:id="@+id/bt_stop_cycle_alarm"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="Stop Cycle Alarm" />

</LinearLayout>

activity_second

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:orientation="vertical"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.example.android_20_2_ex1.SecondActivity" >

    <TextView

        android:id="@+id/tv_01"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:padding="10px"

        android:textSize="20px"

        android:textStyle="bold"

        android:background="#00ff00"

        android:textColor="#ffffff"

        android:gravity="center" />

   

</LinearLayout>