Forgeround服务在几分钟后停止或锁定手机

Question

>我尝试创建每 20 秒烘烤一条消息的前台服务，但此服务在几分钟后停止或锁定手机。 我在安卓 8 (O( 中测试了这项服务。 我的代码是：

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
input = intent.getStringExtra("inputExtra");
new Thread(new Runnable() {
public void run() {
while (progressStatus < 10000000) {
progressStatus += 1;           
handler.post(new Runnable() {
@SuppressLint("MissingPermission")
public void run() {
Intent notificationIntent = new Intent(ExampleService.this, MainActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(ExampleService.this,
0, notificationIntent, 0);
String mmm = CHANNEL_ID;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
id = "id_product";
// The user-visible name of the channel.
CharSequence name = "Product";
// The user-visible description of the channel.
String description = "Notifications regarding our products";
int importance = NotificationManager.IMPORTANCE_MAX;
NotificationChannel mChannel = new NotificationChannel(id, name, NotificationManager.IMPORTANCE_DEFAULT);
// Configure the notification channel.
mChannel.setDescription(description);
mChannel.enableLights(true);
// Sets the notification light color for notifications posted to this
// channel, if the device supports this feature.
mChannel.setLightColor(Color.RED);
notificationManager.createNotificationChannel(mChannel);
}
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(getApplicationContext(),"id_product")
.setContentTitle("Example Service")
.setContentText(input)
.setSmallIcon(R.drawable.ic_launcher_background)
.setContentIntent(pendingIntent)
.setChannelId(id)
.setAutoCancel(true).setContentIntent(pendingIntent)
.setNumber(1)
.setColor(255)
.setContentText(input)
.setWhen(System.currentTimeMillis());
notificationManager.notify(1, notificationBuilder.build());
Notification notification = new NotificationCompat.Builder(getApplicationContext(), CHANNEL_ID)
.setContentTitle("Example Service")
.setContentText(input)
.setSmallIcon(R.drawable.ic_launcher_background)
.setContentIntent(pendingIntent)
.build();
Toast.makeText(getApplicationContext(), " run service" , Toast.LENGTH_SHORT).show();
startForeground(1, notification);
}
});
try {
Thread.sleep(20000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}).start();
return START_STICKY;
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}

这项服务在开始和第一分钟都可以，但它通常在几分钟后结束，有时在几分钟后再次开始。有时它通过连接到互联网启动，有时它通过连接 USB 电缆开始工作。我真的不知道原因是什么。有人可以帮助我吗？

Answer 1

请在此处正确阅读Android Oreo 8.0文档， 对于后台服务

我的建议是使用：

1. 作业调度程序

2. 工作管理器

希望这个答案可以帮助您当前的代码

https://stackoverflow.com/a/48302378/6541643