Asked 5 years, 4 months ago
Active 3 years, 9 months ago
Viewed 56k time
41
2
I try to notify adapters of listviews of main class in onPostExecute but I receive the error: java.lang.IllegalMonitorStateException:object not locked by thread before notify()
@Override
protected void onPostExecute(String result) {
popularfragment.adapter.notifyDataSetChanged();
recentfragment.adapter.notifyDataSetChanged();
}asked Jun 12 '14 at 13:38
65411 gold badge77 silver badges2323 bronze badges
add a comment
2 Answers
81
The .notify() method has to be called from within a synchronized context, ie from inside a synchronized block.
The java.lang.IllegalMonitorStateException is thrown when you call .notify() on an object that is not used as the lock for the synchronized block in which you call notify. For example, the following works;
synchronized(obj){
obj.notify();
}But this will throw the exception;
synchronized(obj){
// notify() is being called here when the thread and
// synchronized block does not own the lock on the object.
anotherObj.notify();
}Reference;
111 silver badge
answered Jun 12 '14 at 13:48
7,72555 gold badges3838 silver badges6969 bronze badges
add a comment
2
I had the same error, but (for me) the answer suggested by Rudi Kershaw wasn't the issue... I called the notify() of a Notification the wrong way (see the last line of both snippets):
Not working:
public void update() {
mBuilder.setSmallIcon(R.drawable.ic_launcher)
.setPriority(AesPrefs.getInt(R.string.PRIORITY_NOTIFICATION_BATTERY, NotificationCompat.PRIORITY_MAX))
.setOngoing(true);
mBuilder.setWhen(AesPrefs.getLong(Loader.gStr(R.string.LAST_FIRED_BATTERY_NOTIFICATION) + Const.START_CLIPBOARD_NOTIFICATION_DELAYED, -1));
mManager.notify(); // <- lil' mistake
}Working:
public void update() {
mBuilder.setSmallIcon(R.drawable.ic_launcher)
.setPriority(AesPrefs.getInt(R.string.PRIORITY_NOTIFICATION_BATTERY, NotificationCompat.PRIORITY_MAX))
.setOngoing(true);
mBuilder.setWhen(AesPrefs.getLong(Loader.gStr(R.string.LAST_FIRED_BATTERY_NOTIFICATION) + Const.START_CLIPBOARD_NOTIFICATION_DELAYED, -1));
mManager.notify(Const.NOTIFICATION_CLIPBOARD, mBuilder.build()); // <- ok ;-)
}answered Dec 29 '15 at 20:19
8,59877 gold badges4444 silver badges6060 bronze badges
add a comment
