Android的AlarmManager或服务?

编程入门 行业动态 更新时间:2024-10-09 07:23:48
本文介绍了Android的AlarmManager或服务?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧! 问题描述

我有一个应用程序,即有建立一个警告,以经常性服务main.java文件。然而,当我关闭该应用程序的服务不再要求一些奇怪的原因。所以,我身边是我应该做我的应用程序读取(基本上是我要的是像Twicca,其中Twitter的应用程序继续,即使你从你的任务管理器关闭它运行)。它看起来像什么,我需要做的就是我的部署整个应用程序作为一种服务,因此它会继续运行下去,除非系统关闭它。难道这是我应该做的?或者是有一个更合适的方式来做到这一点?

I have an application, that has a main.java file that sets up an alarm to call a recurring service. However when I close the application the service is no longer called for some weird reason. So I was reading around what I should be doing for my application (basically what I want is something like Twicca, where the twitter app continues to run even if you close it from your "task manager"). And it looks like what I need to do is deploy my entire application as a service, so that it will keep running indefinitely unless the system closes it. Is this what I should be doing? Or is there a more appropriate way to do this?

我是这样看四周,发现这挂我这一个问题 - 的android-$c$cs-examples.blogspot/2011/11/running-service-in-background-on.html?m=1 - 是我应该做的?看来,在这个例子中基本用户关闭应用程序,但它继续作为背景,是否正确?

I was reading around SO and found a question which linked me to this - android-codes-examples.blogspot/2011/11/running-service-in-background-on.html?m=1 - is that what I should be doing? It seems that in that example basically the user closes the application but it continues to run as a service in the background, correct?

有关参考这里有我的文件:

For reference here are my files:

MainActivity.java

MainActivity.java

gist.github/4414275

RepeatingAlarm.java

RepeatingAlarm.java

gist.github/4414277

我在我的清单设置是否正确,因为报警被表现为它应该是这里的文件。

I have it set up correctly in my manifest since the alarm is behaving as it should be here is that file to.

gist.github/4414285

推荐答案

您将不得不使用服务。还有就是里面ApiDemos一个完整的例子 - 名字AlarmService_Service和AlarmService。我将在这里发布code你:

You'll have to use a service. There is a complete example inside the ApiDemos - the names are AlarmService_Service and AlarmService. I will post the code here for you:

/* * Copyright (C) 2007 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * www.apache/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.example.android.apis.app; // Need the following import to get access to the app resources, since this // class is in a sub-package. import com.example.android.apis.R; import android.app.Activity; import android.app.AlarmManager; import android.app.PendingIntent; import android.content.Intent; import android.os.SystemClock; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.Toast; /** * This demonstrates how you can schedule an alarm that causes a service to * be started. This is useful when you want to schedule alarms that initiate * long-running operations, such as retrieving recent e-mails. */ public class AlarmService extends Activity { private PendingIntent mAlarmSender; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Create an IntentSender that will launch our service, to be scheduled // with the alarm manager. mAlarmSender = PendingIntent.getService(AlarmService.this, 0, new Intent(AlarmService.this, AlarmService_Service.class), 0); setContentView(R.layout.alarm_service); // Watch for button clicks. Button button = (Button)findViewById(R.id.start_alarm); button.setOnClickListener(mStartAlarmListener); button = (Button)findViewById(R.id.stop_alarm); button.setOnClickListener(mStopAlarmListener); } private OnClickListener mStartAlarmListener = new OnClickListener() { public void onClick(View v) { // We want the alarm to go off 30 seconds from now. long firstTime = SystemClock.elapsedRealtime(); // Schedule the alarm! AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE); am.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, firstTime, 30*1000, mAlarmSender); // Tell the user about what we did. Toast.makeText(AlarmService.this, R.string.repeating_scheduled, Toast.LENGTH_LONG).show(); } }; private OnClickListener mStopAlarmListener = new OnClickListener() { public void onClick(View v) { // And cancel the alarm. AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE); am.cancel(mAlarmSender); // Tell the user about what we did. Toast.makeText(AlarmService.this, R.string.repeating_unscheduled, Toast.LENGTH_LONG).show(); } }; }

和服务:

/* * Copyright (C) 2007 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * www.apache/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.example.android.apis.app; // Need the following import to get access to the app resources, since this // class is in a sub-package. import com.example.android.apis.R; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.app.Service; import android.content.Intent; import android.os.Binder; import android.os.IBinder; import android.os.Parcel; import android.os.RemoteException; import android.widget.Toast; /** * This is an example of implementing an application service that will run in * response to an alarm, allowing us to move long duration work out of an * intent receiver. * * @see AlarmService * @see AlarmService_Alarm */ public class AlarmService_Service extends Service { NotificationManager mNM; @Override public void onCreate() { mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE); // show the icon in the status bar showNotification(); // Start up the thread running the service. Note that we create a // separate thread because the service normally runs in the process's // main thread, which we don't want to block. Thread thr = new Thread(null, mTask, "AlarmService_Service"); thr.start(); } @Override public void onDestroy() { // Cancel the notification -- we use the same ID that we had used to start it mNM.cancel(R.string.alarm_service_started); // Tell the user we stopped. Toast.makeText(this, R.string.alarm_service_finished, Toast.LENGTH_SHORT).show(); } /** * The function that runs in our worker thread */ Runnable mTask = new Runnable() { public void run() { // Normally we would do some work here... for our sample, we will // just sleep for 30 seconds. long endTime = System.currentTimeMillis() + 15*1000; while (System.currentTimeMillis() < endTime) { synchronized (mBinder) { try { mBinder.wait(endTime - System.currentTimeMillis()); } catch (Exception e) { } } } // Done with our work... stop the service! AlarmService_Service.this.stopSelf(); } }; @Override public IBinder onBind(Intent intent) { return mBinder; } /** * Show a notification while this service is running. */ private void showNotification() { // In this sample, we'll use the same text for the ticker and the expanded notification CharSequence text = getText(R.string.alarm_service_started); // Set the icon, scrolling text and timestamp Notification notification = new Notification(R.drawable.stat_sample, text, System.currentTimeMillis()); // The PendingIntent to launch our activity if the user selects this notification PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, AlarmService.class), 0); // Set the info for the views that show in the notification panel. notification.setLatestEventInfo(this, getText(R.string.alarm_service_label), text, contentIntent); // Send the notification. // We use a layout id because it is a unique number. We use it later to cancel. mNM.notify(R.string.alarm_service_started, notification); } /** * This is the object that receives interactions from clients. See RemoteService * for a more complete example. */ private final IBinder mBinder = new Binder() { @Override protected boolean onTransact(int code, Parcel data, Parcel reply, int flags) throws RemoteException { return super.onTransact(code, data, reply, flags); } }; }

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Android的AlarmManager或服务?

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