Android通知管理类

　　通知管理类
　　package com.track.beini.navtrack.utils;
　　import android.app.NotificationChannel;
　　import android.app.NotificationManager;
　　import android.app.PendingIntent;
　　import android.app.TaskStackBuilder;
　　import android.content.Context;
　　import android.content.ContextWrapper;
　　import android.content.Intent;
　　import android.content.pm.PackageManager;
　　import android.os.Build;
　　import android.provider.Settings;
　　import android.support.v4.app.NotificationCompat;
　　import com.track.beini.navtrack.MainActivity;
　　import com.track.beini.navtrack.R;
　　/**
　　* Create by beini 2019/5/21
　　* 通知管理类
　　*/
　　public class NotificationHelper extends ContextWrapper {
　　private NotificationManager mNotificationManager;
　　private NotificationChannel mNotificationChannel;
　　public static final String CHANNEL_ID = ＂default＂;
　　private static final String CHANNEL_NAME = ＂Default Channel＂;
　　private static final String CHANNEL_DESCRIPTION = ＂this is default channel!＂;
　　public NotificationHelper(Context base) {
　　super(base);
　　if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
　　mNotificationChannel = new NotificationChannel(CHANNEL_ID, CHANNEL_NAME, NotificationManager.IMPORTANCE_DEFAULT);
　　mNotificationChannel.setDescription(CHANNEL_DESCRIPTION);
　　getNotificationManager().createNotificationChannel(mNotificationChannel);
　　}
　　}
　　public NotificationCompat.Builder getNotification(String title, String content) {
　　NotificationCompat.Builder builder = null;
　　if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
　　builder = new NotificationCompat.Builder(this, CHANNEL_ID);
　　} else {
　　builder = new NotificationCompat.Builder(this);
　　builder.setPriority(NotificationCompat.PRIORITY_DEFAULT);
　　}
　　builder.setContentTitle(title);
　　builder.setContentText(content);
　　builder.setSmallIcon(R.mipmap.icon_app);
　　//点击通知之后需要跳转的页面
　　Intent resultIntent = new Intent(this, MainActivity.class);
　　resultIntent.putExtra(＂goto＂, ＂message＂);
　　//使用TaskStackBuilder为＂通知页面＂设置返回关系
　　TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
　　//为点击通知后打开的页面设定 返回 页面。（在manifest中指定）
　　stackBuilder.addParentStack(MainActivity.class);
　　stackBuilder.addNextIntent(resultIntent);
　　PendingIntent pIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
　　builder.setContentIntent(pIntent);
　　// builder.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.icon_app));
　　//点击自动删除通知
　　builder.setAutoCancel(true);
　　return builder;
　　}
　　public void notify(int id, NotificationCompat.Builder builder) {
　　if (getNotificationManager() != null) {
　　getNotificationManager().notify(id, builder.build());
　　}
　　}
　　public void openChannelSetting(String channelId) {
　　Intent intent = new Intent(Settings.ACTION_CHANNEL_NOTIFICATION_SETTINGS);
　　intent.putExtra(Settings.EXTRA_APP_PACKAGE, getPackageName());
　　intent.putExtra(Settings.EXTRA_CHANNEL_ID, channelId);
　　if (getPackageManager().resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY) != null)
　　startActivity(intent);
　　}
　　public void openNotificationSetting() {
　　Intent intent = new Intent(Settings.ACTION_APP_NOTIFICATION_SETTINGS);
　　intent.putExtra(Settings.EXTRA_APP_PACKAGE, getPackageName());
　　if (getPackageManager().resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY) != null)
　　startActivity(intent);
　　}
　　private NotificationManager getNotificationManager() {
　　if (mNotificationManager == null)
　　mNotificationManager = (NotificationManager) this.getSystemService(this.NOTIFICATION_SERVICE);
　　return mNotificationManager;
　　}
　　}使用：
　　private static final int DEFAULT_ID = 1001;
　　public void showNotification(String title, String content, Context context) {
　　NotificationHelper mNotificationHelper = new NotificationHelper(context);
　　NotificationCompat.Builder builder = mNotificationHelper.getNotification(title, content);
　　mNotificationHelper.notify(DEFAULT_ID, builder);
　　}