Reputation: 173
I am trying to send a serializable object to a pending Intent. The problem is the alarm being received is returning as null. Even though the Alarm implements the serializable interface.
//AlarmService.java
Intent myIntent = new Intent(getApplicationContext(), AlarmAlertBroadcastReciever.class);
Bundle bundle = new Bundle();
bundle.putSerializable("alarm", alarm);
myIntent.putExtras(bundle);
PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, myIntent, PendingIntent.FLAG_CANCEL_CURRENT);
AlarmManager alarmManager = (AlarmManager)getApplicationContext().getSystemService(Context.ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, alarm.getAlarmTime().getTimeInMillis(), pendingIntent);
The alarm being received is null.
//AlarmAlertBroadcastReceiver.java
public class AlarmAlertBroadcastReciever extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Alarm alarm = (Alarm)intent.getExtras().getSerializable("alarm");
}
}
Edit: Some more things I've tried is as follows, but it doesn't seem to work:
//AlarmService.java
Intent myIntent = new Intent(getApplicationContext(), AlarmAlertBroadcastReciever.class);
myIntent.putExtra("alarm", alarm);
myIntent.setAction("abc.xyz");
PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, myIntent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager)getApplicationContext().getSystemService(Context.ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, alarm.getAlarmTime().getTimeInMillis(), pendingIntent);
The alarm being received is null.
//AlarmAlertBroadcastReceiver.java
public class AlarmAlertBroadcastReciever extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Alarm alarm = (Alarm)intent.getExtras().getSerializable("alarm");
//Alarm alarm = (Alarm)intent.getSerializableExtra("alarm");
}
}
Upvotes: 8
Views: 4478
Reputation: 173
I am using android Nougat so none of these answers quite worked. I ended up passing the objects in a byte array.
//AlarmService.java
Intent myIntent = new Intent(getApplicationContext(), AlarmAlertBroadcastReciever.class);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream out = null;
try {
out = new ObjectOutputStream(bos);
out.writeObject(alarm);
out.flush();
byte[] data = bos.toByteArray();
myIntent.putExtra("alarm", data);
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
bos.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, myIntent, PendingIntent.FLAG_CANCEL_CURRENT);
AlarmManager alarmManager = (AlarmManager) getApplicationContext().getSystemService(Context.ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, alarm.getAlarmTime().getTimeInMillis(), pendingIntent);
Then I received the Byte[]
//AlarmAlertBroadcastReceiver.java
@Override
public void onReceive(Context context, Intent intent) {
ByteArrayInputStream bis = new ByteArrayInputStream(intent.getByteArrayExtra("alarm"));
ObjectInput in = null;
Alarm alarm = null;
try {
in = new ObjectInputStream(bis);
alarm = (Alarm)in.readObject();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (in != null) {
in.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
Upvotes: 3
Reputation: 95626
There are known issues with putting custom objects into an Intent
that is then passed to AlarmManager
or NotificationManager
or other external applications. You can try to wrap your custom object in a Bundle
, as this will sometimes work. For example, change your code to:
Intent myIntent = new Intent(getApplicationContext(),
AlarmAlertBroadcastReciever.class);
Bundle bundle = new Bundle();
bundle.putSerializable("alarm", alarm);
myIntent.putExtra("bundle", bundle);
and in AlarmAlertBroadcastReciever.onReceive()
:
Bundle bundle = intent.getBundleExtra("bundle");
if (bundle != null) {
Alarm alarm = (Alarm)bundle.getSerializable("alarm");
}
If this does not work (and this should work on most Android versions/devices, but not all, especially very new ones), you will need to convert your Serializeable
object into a byte[]
and put the byte[]
into the extras.
There are dozens of examples of how to do that on Stackoverflow.
Upvotes: 20
Reputation: 2198
Have you tried with any other request id other than 0
for eg
int requestID = (int) System.currentTimeMillis();
PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), requestID , myIntent, PendingIntent.FLAG_UPDATE_CURRENT);
public void onReceive(Context context, Intent intent) {
if(intent!=null && intent.hasExtra("alarm")){
Alarm alarm = (Alarm)intent.getExtras().getSerializable("alarm");
}
}
Upvotes: -1
Reputation: 8200
There are 2 things I want to suggest:
Action
to your intent, such as: yourIntent.setAction("abc.xyz")
FLAG_UPDATE_CURRENT
instead of FLAG_CANCEL_CURRENT
Hope it helps.
Upvotes: 0
Reputation: 11018
It's a suggestion, you can try parcelabler which is more efficient and tailored for android specific needs. so get your model class parceled here. after that paste in into your project and then pass it to another activity using either bundle
bundle.putParcelable(KEY_PARCEL, detailModelsList.get(position));
or
intent.putParcelableArrayListExtra("Parcelaber",myList);
Upvotes: 0
Reputation: 391
You have putSerializable
in Bundle. And you are try to getSerializable
from intent.
For set : `myIntent.putExtra("alarm", alarm);`
For get : `(Alarm)intent.getExtras().getSerializableExtra("alarm");`
Also make sure your `Alarm` calss have `implements` with `Serializable`.
try that.
Upvotes: 0