手动设置上

电池优化：不同手机路径不同，可直接搜索“电池”，找到带有“优化”的选项

以上可通过代码操作：

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            Log.d("TINA", "isIgnoringBatteryOptimizations():  " + isIgnoringBatteryOptimizations());
            if (!isIgnoringBatteryOptimizations()) {
                requestIgnoreBatteryOptimizations();
                Log.d("TINA", "requestIgnoreBatteryOptimizations():  ");
            }
        }

    @RequiresApi(api = Build.VERSION_CODES.M)
    private boolean isIgnoringBatteryOptimizations() {
        boolean isIgnoring = false;
        PowerManager powerManager = (PowerManager) getSystemService(Context.POWER_SERVICE);
        if(powerManager != null) {
            isIgnoring = powerManager.isIgnoringBatteryOptimizations(getPackageName());
        }
        return isIgnoring;
    }
    
    private static int RESULT = 20;
    @RequiresApi(api = Build.VERSION_CODES.M)
    public void requestIgnoreBatteryOptimizations() {
        try{
            Intent intent = new Intent(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS);
            intent.setData(Uri.parse("package:"+ getPackageName()));
            startActivityForResult(intent, RESULT);
        } catch(Exception e) {
            e.printStackTrace();
        }
    }

“电池与性能-设置-应用智能省电-无限制” 或者 “应用设置-应用管理-选择应用-省电策略-无限制”

代码上

增加前台服务

    private void startNotification(Context context) {
        Notification notification;
        Intent notificationIntent = new Intent(this, MainActivity.class);
        PendingIntent pendingIntent = PendingIntent.getActivity(context, 0,
                notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
        //1.通知栏占用，不清楚的看官网或者音乐类APP的效果
        Notification.Builder builder = new Notification.Builder(context)
                .setSmallIcon(R.mipmap.ic_launcher)
                .setWhen(System.currentTimeMillis())
                .setTicker("Advertising测试")
                .setContentTitle("Advertising测试标题")
                .setContentText("Advertising测试内容")
                .setOngoing(true)
                .setPriority(Notification.PRIORITY_MAX)
                .setContentIntent(pendingIntent)
                .setAutoCancel(false);
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            createNotificationChannel();
            builder.setChannelId("AdvertisingChannelId");
        }
        notification = builder.build();
        /*使用startForeground,如果id为0，那么notification将不会显示*/
        startForeground(100, notification);
    }
    
    public void createNotificationChannel() {
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

            NotificationChannel channel = new NotificationChannel("AdvertisingChannelId", "AdvertisingChannelName", NotificationManager.IMPORTANCE_HIGH);

            notificationManager.createNotificationChannel(channel);
        }
    }