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Android 8.0实现发送通知

2020年07月30日  | 移动技术网移动技术  | 我要评论

在android8.0以后，针对notification 通知api做了修改，新增了通知渠道（notificationcannel)。下面就把demo的详细代码记录下：

1.application 为notificationmanager添加通知频道

import android.app.application;

import com.xinrui.ndkapp.notification.notificationchannels;

public class ndkapplication extends application {
  @override
  public void oncreate() {
    super.oncreate();
    notificationchannels.createallnotificationchannels(this);
  }
}

2.notificationchannels 类

public class notificationchannels {
  public final static string critical = "critical";
  public final static string importance = "importance";
  public final static string default = "default";
  public final static string low = "low";
  public final static string media = "media";

  public static void createallnotificationchannels(context context) {
    notificationmanager nm = (notificationmanager) context.getsystemservice(context.notification_service);

    if(nm == null) {
      return;
    }

    notificationchannel mediachannel = new notificationchannel(
        media,
        context.getstring(r.string.app_name),
        notificationmanager.importance_default);
    mediachannel.setsound(null,null);
    mediachannel.setvibrationpattern(null);

    nm.createnotificationchannels(arrays.aslist(
        new notificationchannel(
            critical,
            context.getstring(r.string.app_name),
            notificationmanager.importance_high),
        new notificationchannel(
            importance,
            context.getstring(r.string.app_name),
            notificationmanager.importance_default),
        new notificationchannel(
            default,
            context.getstring(r.string.app_name),
            notificationmanager.importance_low),
        new notificationchannel(
            low,
            context.getstring(r.string.app_name),
            notificationmanager.importance_min),
        //custom notification channel
        mediachannel
    ));
  }
}

3.发送通知

public void sendsimplenotification(context context, notificationmanager nm) {
    //创建点击通知时发送的广播
    intent intent = new intent(context, notificationmonitorservice.class);
    intent.setaction("android.service.notification.notificationlistenerservice");
    pendingintent pi = pendingintent.getservice(context,0,intent,0);
    //创建删除通知时发送的广播
    intent deleteintent = new intent(context,notificationmonitorservice.class);
    deleteintent.setaction(intent.action_delete);
    pendingintent deletependingintent = pendingintent.getservice(context,0,deleteintent,0);
    //创建通知
    notification.builder nb = new notification.builder(context, notificationchannels.default)
        //设置通知左侧的小图标
        .setsmallicon(r.drawable.ic_notification)
        //设置通知标题
        .setcontenttitle("simple notification")
        //设置通知内容
        .setcontenttext("demo for simple notification!")
        //设置点击通知后自动删除通知
        .setautocancel(true)
        //设置显示通知时间
        .setshowwhen(true)
        //设置通知右侧的大图标
        .setlargeicon(bitmapfactory.decoderesource(context.getresources(),r.drawable.ic_notifiation_big))
        //设置点击通知时的响应事件
        .setcontentintent(pi)
        //设置删除通知时的响应事件
        .setdeleteintent(deletependingintent);
    //发送通知
    nm.notify(notificaitons.notification_sample,nb.build());
 }

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