Android - java.lang.IllegalArgumentException: cont

问题:

I have a service running that updates a notification in the notification bar when it recieves a message saying it has to be changed.

However I get the following error sometimes when the notification is to be updated

java.lang.IllegalArgumentException: contentIntent required

Here is my code:

Variable setup

---

int icon = R.drawable.notification;
CharSequence tickerText = "Test";
long when = System.currentTimeMillis();
PendingIntent contentIntent;

Notification notification = new Notification(icon, tickerText, when);

NotificationManager mNotificationManager;

---

NotificationManager Creation

---

    String ns = Context.NOTIFICATION_SERVICE;
    mNotificationManager = (NotificationManager) getSystemService(ns);

---

Notification Creation

---

    Intent notificationIntent = new Intent(this, TestsApp.class);
    contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
    notification.flags |= Notification.FLAG_NO_CLEAR;
    notification.icon = R.drawable.notification3;
    notification.setLatestEventInfo(this, "Registering", "Test", contentIntent);
    mNotificationManager.notify(1, notification);

---

Update of Notification

---

    notification.icon = R.drawable.notification2;
    notification.setLatestEventInfo(getApplicationContext(), "Registered", "Test", contentIntent);
    mNotificationManager.notify(1, notification);   

---

So something is happening my contentIntent somewhere along the line, would that be correct?

It is declared at the top of my Service class as a member variable and is not used anywhere else in the code apart from shown above, so where could it be getting reset to null?

回答1:

you need to set the contentIntent for your notification.

in your case:

notification.contentIntent = notificationIntent;

otherwise you will get the message, that the contentIntent of the notification is null, because it's not set.

the docu is here: http://developer.android.com/reference/android/app/Notification.html#contentIntent

i have a little example here: http://united-coders.com/nico-heid/show-progressbar-in-notification-area-like-google-does-when-downloading-from-android

回答2:

I think this is because the Android OS Version

The version 2.3 or lower,must set contentIntent,if not,you will get this Exception.

In my project,I write like this:

if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.HONEYCOMB) { Intent intent = new Intent(); PendingIntent contentIntent = PendingIntent.getActivity(context, 0, intent, 0); mNotification.contentIntent = contentIntent; }

Perhaps this could help you!

回答3:

In your case

contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);

if you want to use Intents with the same action but different extras:

1) Change

requestCode

from default "0" in

getActivity (Context context, int requestCode, Intent intent, int flags)

to something unique like `

(int) System.currentTimeMillis();

` 2)

notification.contentIntent = notificationIntent;

Both steps are mandatory because:

• Option 2 will not work without option 1.
• Option 1 will throw IllegalArgumentException without 2.

回答4:

In my case, I had an example code to do, with a single Notification to create, and I also got "contentIntent required" error - google brought me to this thread :D

the source of this problem were quotations that I copied from an example code and pasted it in eclipse project. When I deleted " " and typed them back and problem was solved. Maybe this helps someone.

These were quotations source of error: nb.setContentTitle("My first notification!"); nb.setContentText("Hello");