Aprenda a disparar intents em algum momento do futuro com AlarmManager.

1. PROGRAMAÇÃO PARA
DISPOSITIVOS MÓVEIS
AlarmManager

2. Objetivos da aula
 AlarmManager

3. Qual a maneira mais correta para
disparar uma intent as 15:00:30 de
cada dia?

4. Android nos facilita com
AlarmManager...

7. Podemos predizer o futuro...

8. Podemos disparar uma Intent na data
e hora desejada.

9. Depois que ativamos o alarme,
podemos até esquecê-lo.

10. O alarme só será cancelado por nós
ou caso o device seja reiniciado.

12. public class ExemploAlarme extends Activity {
public void onCreate(Bundle savedInstanceState) {
...
agendarPara10Segundos();
}
}

13. public class ExemploAlarme extends Activity {
public void onCreate(Bundle savedInstanceState) {
...
agendarPara10Segundos();
}
private void agendarPara10Segundos() {
}
}

14. public class ExemploAlarme extends Activity {
public void onCreate(Bundle savedInstanceState) {
...
agendarPara10Segundos();
}
private void agendarPara10Segundos() {
Intent intencao = new Intent("ALARME_TESTE");
}
}

15. public class ExemploAlarme extends Activity {
public void onCreate(Bundle savedInstanceState) {
...
agendarPara10Segundos();
}
private void agendarPara10Segundos() {
Intent intencao = new Intent("ALARME_TESTE");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intencao, 0);
}
}

16. public class ExemploAlarme extends Activity {
public void onCreate(Bundle savedInstanceState) {
...
agendarPara10Segundos();
}
private void agendarPara10Segundos() {
Intent intencao = new Intent("ALARME_TESTE");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intencao, 0);
Calendar calendario = Calendar.getInstance();
calendario.setTimeInMillis(System.currentTimeMillis());
}
}

17. public class ExemploAlarme extends Activity {
public void onCreate(Bundle savedInstanceState) {
...
agendarPara10Segundos();
}
private void agendarPara10Segundos() {
Intent intencao = new Intent("ALARME_TESTE");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intencao, 0);
Calendar calendario = Calendar.getInstance();
calendario.setTimeInMillis(System.currentTimeMillis());
calendario.add(Calendar.SECOND, 10);
long agendamentoEmMilis = calendario.getTimeInMillis();
}
}

18. public class ExemploAlarme extends Activity {
public void onCreate(Bundle savedInstanceState) {
...
agendarPara10Segundos();
}
private void agendarPara10Segundos() {
Intent intencao = new Intent("ALARME_TESTE");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intencao, 0);
Calendar calendario = Calendar.getInstance();
calendario.setTimeInMillis(System.currentTimeMillis());
calendario.add(Calendar.SECOND, 10);
long agendamentoEmMilis = calendario.getTimeInMillis();
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
}
}

19. public class ExemploAlarme extends Activity {
public void onCreate(Bundle savedInstanceState) {
...
agendarPara10Segundos();
}
private void agendarPara10Segundos() {
Intent intencao = new Intent("ALARME_TESTE");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intencao, 0);
Calendar calendario = Calendar.getInstance();
calendario.setTimeInMillis(System.currentTimeMillis());
calendario.add(Calendar.SECOND, 10);
long agendamentoEmMilis = calendario.getTimeInMillis();
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, agendamentoEmMilis, pendingIntent);
}
}

20. O AlarmManager irá disparar a Intent
“ALARME_TESTE” após 10 segundos.
Neste período nosso aplicativo pode
ter sido finalizado. Justamente por
isso, precisaremos de um
BroadcastReceiver...

21. public class ReceberAlarme extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "Alarme recebido!", Toast.LENGTH_LONG).show();
}
}

22. public class ReceberAlarme extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "Alarme recebido!", Toast.LENGTH_LONG).show();
}
}

23. public class ReceberAlarme extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "Alarme recebido!", Toast.LENGTH_LONG).show();
}
}

24. Registramos o BroadcastReceiver
aonde?

25. <?xml version="1.0" encoding="UTF-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="br.senai.alarmmanager“ android:versionCode="1“>
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity android:name=".ExemploAlarme">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".ReceberAlarme">
<intent-filter>
<action android:name="ALARME_TESTE" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
</application>
</manifest>

26. <?xml version="1.0" encoding="UTF-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="br.senai.alarmmanager“ android:versionCode="1“>
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity android:name=".ExemploAlarme">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".ReceberAlarme">
<intent-filter>
<action android:name="ALARME_TESTE" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
</application>
</manifest>

27. <?xml version="1.0" encoding="UTF-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="br.senai.alarmmanager“ android:versionCode="1“>
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity android:name=".ExemploAlarme">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".ReceberAlarme">
<intent-filter>
<action android:name="ALARME_TESTE" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
</application>
</manifest>

28. <?xml version="1.0" encoding="UTF-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="br.senai.alarmmanager“ android:versionCode="1“>
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity android:name=".ExemploAlarme">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".ReceberAlarme">
<intent-filter>
<action android:name="ALARME_TESTE" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
</application>
</manifest>

29. Como cancelar um alarme?

30. public class ExemploAlarme extends Activity {
public void onCreate(Bundle savedInstanceState) {
...
agendarPara10Segundos();
}
private void agendarPara10Segundos() {
Intent intencao = new Intent("ALARME_TESTE");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intencao, 0);
Calendar calendario = Calendar.getInstance();
calendario.setTimeInMillis(System.currentTimeMillis());
calendario.add(Calendar.SECOND, 10);
long agendamentoEmMilis = calendario.getTimeInMillis();
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, agendamentoEmMilis, pendingIntent);
}
protected void onDestroy() {
super.onDestroy();
}
}

31. public class ExemploAlarme extends Activity {
public void onCreate(Bundle savedInstanceState) {
...
agendarPara10Segundos();
}
private void agendarPara10Segundos() {
Intent intencao = new Intent("ALARME_TESTE");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intencao, 0);
Calendar calendario = Calendar.getInstance();
calendario.setTimeInMillis(System.currentTimeMillis());
calendario.add(Calendar.SECOND, 10);
long agendamentoEmMilis = calendario.getTimeInMillis();
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, agendamentoEmMilis, pendingIntent);
}
protected void onDestroy() {
super.onDestroy();
Intent it = new Intent("ALARME_TESTE");
}
}

32. public class ExemploAlarme extends Activity {
public void onCreate(Bundle savedInstanceState) {
...
agendarPara10Segundos();
}
private void agendarPara10Segundos() {
Intent intencao = new Intent("ALARME_TESTE");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intencao, 0);
Calendar calendario = Calendar.getInstance();
calendario.setTimeInMillis(System.currentTimeMillis());
calendario.add(Calendar.SECOND, 10);
long agendamentoEmMilis = calendario.getTimeInMillis();
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, agendamentoEmMilis, pendingIntent);
}
protected void onDestroy() {
super.onDestroy();
Intent it = new Intent("ALARME_TESTE");
PendingIntent pi = PendingIntent.getBroadcast(this, 0, it, 0);
}
}

33. public class ExemploAlarme extends Activity {
public void onCreate(Bundle savedInstanceState) {
...
agendarPara10Segundos();
}
private void agendarPara10Segundos() {
Intent intencao = new Intent("ALARME_TESTE");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intencao, 0);
Calendar calendario = Calendar.getInstance();
calendario.setTimeInMillis(System.currentTimeMillis());
calendario.add(Calendar.SECOND, 10);
long agendamentoEmMilis = calendario.getTimeInMillis();
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, agendamentoEmMilis, pendingIntent);
}
protected void onDestroy() {
super.onDestroy();
Intent it = new Intent("ALARME_TESTE");
PendingIntent pi = PendingIntent.getBroadcast(this, 0, it, 0);
AlarmManager manager = (AlarmManager) getSystemService(ALARM_SERVICE);
}
}

34. public class ExemploAlarme extends Activity {
public void onCreate(Bundle savedInstanceState) {
...
agendarPara10Segundos();
}
private void agendarPara10Segundos() {
Intent intencao = new Intent("ALARME_TESTE");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intencao, 0);
Calendar calendario = Calendar.getInstance();
calendario.setTimeInMillis(System.currentTimeMillis());
calendario.add(Calendar.SECOND, 10);
long agendamentoEmMilis = calendario.getTimeInMillis();
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, agendamentoEmMilis, pendingIntent);
}
protected void onDestroy() {
super.onDestroy();
Intent it = new Intent("ALARME_TESTE");
PendingIntent pi = PendingIntent.getBroadcast(this, 0, it, 0);
AlarmManager manager = (AlarmManager) getSystemService(ALARM_SERVICE);
manager.cancel(pi);
}
}

35. E para repetir o alarme a cada 30
segundos?

36. private void agendarPara10Segundos() {
Intent intencao = new Intent("ALARME_TESTE");
PendingIntent pi = PendingIntent.getBroadcast(this, 0, intencao, 0);
Calendar calendario = Calendar.getInstance();
calendario.setTimeInMillis(System.currentTimeMillis());
calendario.add(Calendar.SECOND, 10);
long emMilis = calendario.getTimeInMillis();
int trintaSegundos = 30 * 1000;
AlarmManager alarmmanager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmmanager.set(AlarmManager.RTC_WAKEUP, emMilis, pi);
}

37. private void agendarPara10Segundos() {
Intent intencao = new Intent("ALARME_TESTE");
PendingIntent pi = PendingIntent.getBroadcast(this, 0, intencao, 0);
Calendar calendario = Calendar.getInstance();
calendario.setTimeInMillis(System.currentTimeMillis());
calendario.add(Calendar.SECOND, 10);
long emMilis = calendario.getTimeInMillis();
int trintaSegundos = 30 * 1000;
AlarmManager alarmmanager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmmanager.setRepeating(AlarmManager.RTC_WAKEUP, emMilis, pi);
}

38. private void agendarPara10Segundos() {
Intent intencao = new Intent("ALARME_TESTE");
PendingIntent pi = PendingIntent.getBroadcast(this, 0, intencao, 0);
Calendar calendario = Calendar.getInstance();
calendario.setTimeInMillis(System.currentTimeMillis());
calendario.add(Calendar.SECOND, 10);
long emMilis = calendario.getTimeInMillis();
int trintaSegundos = 30 * 1000;
AlarmManager alarmmanager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmmanager.setRepeating(AlarmManager.RTC_WAKEUP, emMilis, trintaSegundos, pi);
}

39. Não utilize AlarmManager para
simplesmente fazer uma Thread
dormir por um determinado
momento. Para isso, utilize Handler.

41. Até a próxima!