Android 监听系统中消息通知事件
0. 学习文章
参考了下面Blog 彻底没有任何多余的代码java
https://blog.csdn.net/wanghang1208/article/details/49905403android
原来百度卫士的通知栏收纳是相似这样的原理完成的，很不错.web
1.演示结果
数据源头
app
监听到的logide
03-24 14:37:04.264 6155-6155/com.lava.noticeobser D/MyNotificationListenService: onNotificationRemoved
03-24 14:39:19.928 6155-6155/com.lava.noticeobser D/MyNotificationListenService: onNotificationPosted
03-24 14:39:19.928 6155-6155/com.lava.noticeobser I/MyNotificationListenService: notify msg: title=北方多地气温创新高，南方新一轮降雨来袭，详情→ ,when=1521873559186 ,contentTitle=升温幅度明显！ ,contentText=北方多地气温创新高，南方新一轮降雨来袭，详情→ ,contentSubtext=
03-24 14:39:20.235 6155-6155/com.lava.noticeobser D/MyNotificationListenService: onNotificationPosted
03-24 14:39:20.235 6155-6155/com.lava.noticeobser I/MyNotificationListenService: notify msg: title=这些美食不管如何请在开春吃→ ,when=1521873560030 ,contentTitle=错过等一年！ ,contentText=这些美食不管如何请在开春吃→ ,contentSubtext=
03-24 14:39:54.276 6155-6155/com.lava.noticeobser D/MyNotificationListenService: onNotificationPosted
03-24 14:39:54.276 6155-6155/com.lava.noticeobser I/MyNotificationListenService: notify msg: title=正在保存屏幕截图... ,when=1521873594184 ,contentTitle=正在保存屏幕截图... ,contentText=正在保存屏幕截图。 ,contentSubtext=
03-24 14:39:55.156 6155-6155/com.lava.noticeobser D/MyNotificationListenService: onNotificationPosted
03-24 14:39:55.156 6155-6155/com.lava.noticeobser I/MyNotificationListenService: notify msg: title=正在保存屏幕截图... ,when=1521873595096 ,contentTitle=已抓取屏幕截图。 ,contentText=点按便可查看您的屏幕截图。 ,contentSubtext=
2.源码
- MyNotificationListenService 负责监听消息
package com.lava.noticeobser;
import android.app.Notification;
import android.os.Build;
import android.os.Bundle;
import android.service.notification.NotificationListenerService;
import android.service.notification.StatusBarNotification;
import android.util.Log;
import java.lang.reflect.Field;
public class MyNotificationListenService extends NotificationListenerService {
private static final String TAG = MyNotificationListenService.class.getSimpleName();
@Override
public void onNotificationPosted(StatusBarNotification sbn) {
super.onNotificationPosted(sbn);
Log.d(TAG, "onNotificationPosted");
Notification n = sbn.getNotification();
if (n == null) {
return;
}
// 标题和时间
String title = "";
if (n.tickerText != null) {
title = n.tickerText.toString();
}
long when = n.when;
// 其它的信息存在一个bundle中，此bundle在android4.3及以前是私有的，须要经过反射来获取；android4.3以后能够直接获取
Bundle bundle = null;
if (Build.VERSION.SDK_INT == Build.VERSION_CODES.JELLY_BEAN_MR2) {
// android 4.3
try {
Field field = Notification.class.getDeclaredField("extras");
bundle = (Bundle) field.get(n);
} catch (NoSuchFieldException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
} else if (Build.VERSION.SDK_INT > Build.VERSION_CODES.JELLY_BEAN_MR2) {
// android 4.3以后
bundle = n.extras;
}
// 内容标题、内容、副内容
String contentTitle = bundle.getString(Notification.EXTRA_TITLE);
if (contentTitle == null) {
contentTitle = "";
}
String contentText = bundle.getString(Notification.EXTRA_TEXT);
if (contentText == null) {
contentText = "";
}
String contentSubtext = bundle.getString(Notification.EXTRA_SUB_TEXT);
if (contentSubtext == null) {
contentSubtext = "";
}
Log.i(TAG, "notify msg: title=" + title + " ,when=" + when
+ " ,contentTitle=" + contentTitle + " ,contentText="
+ contentText + " ,contentSubtext=" + contentSubtext);
}
@Override
public void onNotificationRemoved(StatusBarNotification sbn) {
super.onNotificationRemoved(sbn);
Log.d(TAG, "onNotificationRemoved");
}
}
- Mainfest.xml 给 MyNotificationListenService 打辅助
<service android:name=".MyNotificationListenService" android:label="mynotifyservice" android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE" >
<intent-filter>
<action android:name="android.service.notification.NotificationListenerService" />
</intent-filter>
</service>
- 开启服务
package com.lava.noticeobser;
import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
startNotificationListenService();
}
// 发送通知
public void sendNotice(View view) {
NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
Notification n;
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
// android 3.0以前
n = new Notification(R.mipmap.ic_launcher, "title",
System.currentTimeMillis());
} else {
// android 3.0以后
n = new Notification.Builder(MainActivity.this)
.setSmallIcon(R.mipmap.ic_launcher).setTicker("title")
.setContentTitle("content title")
.setContentText("content text").setSubText("sub text")
.setWhen(System.currentTimeMillis()).build();
}
manager.notify(0, n);
}
// 跳转服务通知的权限界面
public void settingsNotice(View view) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
Intent intent = new Intent(
"android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS");
startActivity(intent);
} else {
Toast.makeText(MainActivity.this, "手机的系统不支持此功能", Toast.LENGTH_SHORT)
.show();
}
}
// 启动监听消息通知服务
private void startNotificationListenService() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
Intent intent = new Intent(MainActivity.this,
MyNotificationListenService.class);
startService(intent);
} else {
Toast.makeText(MainActivity.this, "手机的系统不支持此功能", Toast.LENGTH_SHORT)
.show();
}
}
}
- 简单粗暴的布局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns: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:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="com.lava.noticeobser.MainActivity" android:orientation="vertical">
<Button android:onClick="sendNotice" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="发通知" />
<Button android:onClick="settingsNotice" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="开启监听权限" />
</LinearLayout>