notificationtset

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学习目的:1.发通知（程序不在前台运行，但希望向用户发一些提示信息）


NotificationActivity类
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public class NotificationActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.notification_layout);
        NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        manager.cancel(1);

    }
}

点击事件

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public void onClick(View v) {
       switch (v.getId()) {
           case R.id.send_notice:

               NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
               Notification notification = new NotificationCompat.Builder(this)
                       .setContentTitle("This is content title")//指定标题内容
                       .setContentText("This is content text")//指定正文内容
                       .setWhen(System.currentTimeMillis())//指定通知被创建时间
                       .setSmallIcon(R.mipmap.ic_launcher)//设置通知的小图标
                       .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher))//设置通知的大图标

                       .setAutoCancel(true);//点击后 通知自动取消
                       .build();
               manager.notify(1, notification);//让通知显示
               break;
           default:
               break;
       }
   }

设置点击通知点击事件PendingIntent（点击通知调到NotificationAcitity.xml并点击后自动消失）

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public void onClick(View v) {
       switch (v.getId()) {
           case R.id.send_notice:
               Intent intent=new Intent(this,NotificationAcitity.class);
               PendingIntent pi=PendingIntent.getActivity(this,0,intent,0);
               NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
               Notification notification = new NotificationCompat.Builder(this)
                       .setContentTitle("This is content title")//指定标题内容
                       .setContentText("This is content text")//指定正文内容
                       .setWhen(System.currentTimeMillis())//指定通知被创建时间
                       .setSmallIcon(R.mipmap.ic_launcher)//设置通知的小图标
                       .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher))//设置通知的大图标
                       .setContentIntent(pi);
                       .setAutoCancel(true);//点击后 通知自动取消
                       .build();
               manager.notify(1, notification);//让通知显示
               break;
           default:
               break;
       }
   }
`

通知的进阶：通知提示音 灯光 /振动需要申请权限

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Notification notification = new NotificationCompat.Builder(this)
setSound(Uri.fromFile(new File("/System/media/audio/ringtone/Luna.ogg")))
.bulid();

振动

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Notification notification = new NotificationCompat.Builder(this)
setVibrate(new log[]{0,1000,1000,1000})震动1秒 静止1秒
.bulid();

<uses-permission android:name="android.permission.VIBRATE" />

灯光

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Notification notification = new NotificationCompat.Builder(this)
setLight(Color.GREEN,1000,1000);
.bulid();

直接使用默认设置

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Notification notification = new NotificationCompat.Builder(this)
setDefaults(NotificationCompat.DEFAULT_ALL)
.bulid();

通知的高级功能 解决超长文字显示不僚的问题 显示超大图片 setStyle()方法

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Notification notification = new NotificationCompat.Builder(this)
.setStyle(new NotificationCompat.BigTextStyle().bigText("fbdvdsjfekfjlsfjskfbjsefbsejfjsjdkfbsdbsdubseufhfusefhuiegeiefjselgbsuohsufbsudfbusfseffusfus"))
.bulid();

显示超大图片

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Notification notification = new NotificationCompat.Builder(this)
.setStyle(new NotificationCompat.BigPictureStyle.BigPicture(BitmapFactory.decodeResource(getResources(),R.drawable.big_image)));
.bulid();

设置通知的重要程度setPriority()

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Notification notification = new NotificationCompat.Builder(this)
setPriority(NotificationCompat.PRIORITY_MAX)//最高权限
.bulid();