Android status bar notification status bar Notification

Three ways to notify users of Android:

1.Toast Notification

2.Dialog Notification

3.Status bar Notification status bar Notification notification

Sending a status bar notification must use two classes: notificationmanager,notification

1.NotificationManager is a system service that must be obtained via Getsystemservice ()

Notificationmanager notificationmanager= (Notificationmanager) Getsystemservice (Notification_service);

2.Notification is the specific status bar notification object

Call Notificationmanager's Notify () method to create the notification

Two parts:

①: status bar notification

Notification.icon=r.drawable.ic_launcher;

notification.tickertext= "My first notification";

Notification.when=system.currenttimemillis ();

②: drop-down notification list and click to jump:

Two different ways:

One: Setlatesteventinfo () method

Context context = Getapplicationcontext ();

Charsequence contenttitle= "Notification";

Charsequence contenttext= "Notification Context";

Intent intent=new Intent (main.this,turn.class);

Pendingintent pendingintent=pendingintent.getactivity (main.this, 0, intent, 0);

Notification.setlatesteventinfo (context, Contenttitle, ContentText, pendingintent);

Two: Custom notification bar

Notification.flags=notification.flag_auto_cancel; Notify auto-Cancel after user clicks

Set two variables Contentview and contentintent

Remoteviews contenview=new remoteviews (Getpackagename (), r.layout.notification_layout);

Contenview.setimageviewresource (R.id.icon, R.drawable.ic_launcher);

Contenview.settextviewtext (R.id.contenttext, "Custom Notification");

Notification.contentview=contenview;

Intent intent1=new Intent (main.this,turn.class);

Pendingintent pendingintent1=pendingintent.getactivity (main.this, 0, intent1, 0);

Notification.contentintent=pendingintent1;

Tips:

Errors you may encounter: couldn ' t expand remoteviews for:

Check if it is a remoteviews corresponding layout that uses a component that it does not support

Check if the layout file for the remoteviews has a basic error, such as forgetting to declare the width higher

Android status bar notification status bar Notification