Android Learning (20) Notification notification bar

First, the contents of the notification bar

1. Icons

2. Title

3. Content

4. Time

5, the corresponding after the click

Second, how to implement the notification bar

1, get Notificationmanager.

2, display the notification bar: Notify (id,notification);

3, the cancellation notice bar: cancle (ID);

4, constructs the notification and sets the display content;

5, notification bar notification can set the sound prompts, indicators, as well as vibration effect.

Iii. Sample code: Send notification and cancel notification

<LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android.com/tools"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"android:orientation= "vertical"Tools:context=". Mainactivity ">    <TextViewAndroid:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:text= "Use of the notification bar" />    <ButtonAndroid:id= "@+id/btn_send"Android:layout_width= "Match_parent"Android:layout_height= "Wrap_content"Android:text= "Send Notification"/>    <ButtonAndroid:id= "@+id/btn_cancel"Android:layout_width= "Match_parent"Android:layout_height= "Wrap_content"Android:text= "Cancel Notification"/></LinearLayout>

Add Permissions:

    <!-- the permission of the light  -    <  android:name= "Android.permission.FLASHLIGHT"/>    <!-- Vibrate Permissions  -    <  android:name= "Android.permission.VIBRATE"/>

Background code:

 Packagecom.example.zhengcheng.myapplication;Importandroid.app.Activity;ImportAndroid.app.NotificationManager;Importandroid.app.PendingIntent;ImportAndroid.content.Context;Importandroid.content.Intent;ImportAndroid.os.Bundle;ImportAndroid.view.View;ImportAndroid.widget.Button;Importandroid.app.Notification; Public classMainactivityextendsActivity {Button btn_send; //send buttonButton Btn_cancel;//Cancel ButtonNotificationmanager Manager;//notification Control class    intNotificationid; @Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);        Setcontentview (R.layout.activity_main); //creating Notificationmanager through System servicesManager =(Notificationmanager) Getsystemservice (Context.notification_service); Btn_send=(Button) Findviewbyid (r.id.btn_send); Btn_send.setonclicklistener (NewView.onclicklistener () {@Override Public voidOnClick (View v) {sendnotication ();        }        }); Btn_cancel=(Button) Findviewbyid (r.id.btn_cancel); Btn_cancel.setonclicklistener (NewView.onclicklistener () {@Override Public voidOnClick (View v) {manager.cancel (Notificationid);    }        }); }    /*** Send notification information*/    Private voidsendnotication () {Intent Intent=NewIntent ( This, Mainactivity.class); Pendingintent pendingintent= Pendingintent.getactivity ( This, 0, intent, 0); Notification.builder Builder=NewNotification.builder ( This);   Builder.setsmallicon (R.mipmap.ic_launcher); //Set iconBuilder.setticker ("Mobile phone status bar Prompt");//Phone status bar tipsBuilder.setwhen (System.currenttimemillis ());//Set the timeBuilder.setcontenttitle ("Notification bar title");//set the title barBuilder.setcontenttext ("I Come from Notificationdemo");//set the contents of the notification barBuilder.setcontentintent (pendingintent);//set which activity pops up when you click the notification bar//builder.setdefaults (Notification.default_sound); //Set Prompt Sound//builder.setdefaults (notification.default_lights); //Setting the LED//builder.setdefaults (notification.default_vibrate); //Set Vibrationbuilder.setdefaults (Notification.default_all); //set all of the above effectsNotification Notification = Builder.build ();//Android4.1 more than the version,//Notification Notification = Builder.getnotification (); //if the version below 4.1 uses builder.getnotification ();manager.notify (notificationid, notification); }}

Android Learning (20) notification notification bar