使用Gluon-mobile中的ALARM_SERVICE服务在Android中安排任务 [英] Schedule a Task in Android using ALARM_SERVICE service in Gluon-mobile

问题描述

我已经从这个链接中提到并试过这段代码所以但是我不知道在 gluon-mobile 中实现这个代码。我打算做的是我想要在特定时间启动一个在后台做一些Job的Indent。我的问题是我不知道胶子移动的行为。所以我帮我完成它。

I have referred from this link and tried this code So far.But I don't know to implement this code in gluon-mobile.What I intent to do is that I want to start an Indent that does some Job in background at a specific time.My problem is that I don't how gluon-mobile behaves.So help me complete it.

package com.application;

import java.util.Calendar;

import android.app.AlarmManager; 
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import javafxports.android.FXActivity;

 public class Schedular {

AlarmManager manager=null;
FXActivity activity=null;
  public Schedular()
{
 manager=(AlarmManager) FXActivity.getInstance().getSystemService(Context.ALARM_SERVICE);
  activity=FXActivity.getInstance();
}

public void schedule()
{

    Intent indent = new Intent(activity,Alarm.class);
    PendingIntent pIntent = PendingIntent.getBroadcast(activity, 0, indent, 0);

manager.set(AlarmManager.RTC_WAKEUP, SystemClock.elapsedRealtime()+2*1000,indent);  //This is Where I went Wrong

}
}

我想在运行时由用户给出的特定时间安排任务，这就是函数公共无效日程表（日历日历，布尔标志）的功能。



Alarm.class

I want to schedule a task at specific timing given by the user at the Run-time,That's what the function public void schedule(Calendar calendar,boolean flag) does.

Alarm.class

 public class Alarm extends BroadcastReceiver
 {

 @Override
 public void onReceive(Context context, Intent intent)
 {

     // Your code to execute when the alarm triggers
     // and the broadcast is received.   
    new bluetooth.turnOn();  
 }

我已将Alarm.class添加到AndroidManifest.xml中

And I have added Alarm.class to AndroidManifest.xml as

 <?xml version="1.0" encoding="UTF-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.application" android:versionCode="1" android:versionName="1.0">
    <supports-screens android:xlargeScreens="true"/>

    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />

    <uses-sdk android:minSdkVersion="3" android:targetSdkVersion="26"/>


    <application android:label="Wifischeduler" android:name="android.support.multidex.MultiDexApplication" android:icon="@mipmap/ic_launcher">

            <activity android:name="javafxports.android.FXActivity" android:label="Wifischeduler" android:configChanges="orientation|screenSize">
                    <meta-data android:name="main.class" android:value="com.application.Main"/>
                    <meta-data android:name="debug.port" android:value="0"/>
                    <intent-filter>
                            <action android:name="android.intent.action.MAIN"/>
                            <category android:name="android.intent.category.LAUNCHER"/>
                    </intent-filter>
            </activity>

        <activity android:name="com.gluonhq.impl.charm.down.plugins.android.NotificationActivity"
                       android:parentActivityName="javafxports.android.FXActivity">
           <meta-data android:name="android.support.PARENT_ACTIVITY" 
                 android:value="javafxports.android.FXActivity"/>
     </activity>

 <activity android:name="com.application.AndroidPlatform$PermissionRequestActivity" />

<receiver android:name="com.application.Alarm"  />  // this is where I have included the Alarm.class

<receiver android:name="com.gluonhq.impl.charm.down.plugins.android.AlarmReceiver" />


    </application>

当调用schedule方法时，app退出...
我已运行adb logcat -v threadtime并在cmd上获得此输出

--------- beginning of crash
07-22 09:21:44.878 13516 13516 E AndroidRuntime: FATAL EXCEPTION: main
07-22 09:21:44.878 13516 13516 E AndroidRuntime: Process:    com.application, PID: 13516
07-22 09:21:44.878 13516 13516 E AndroidRuntime: java.lang.RuntimeException: Unable to instantiate receiver com.application.Alarm: java.lang.IllegalAccessException: java.lang.Class<com.application.Alarm> is not accessible from java.lang.Class<android.app.ActivityThread>
 07-22 09:21:44.878 13516 13516 E AndroidRuntime:        at android.app.ActivityThread.handleReceiver(ActivityThread.java:2739)
 07-22 09:21:44.878 13516 13516 E AndroidRuntime:        at android.app.ActivityThread.access$1900(ActivityThread.java:153)
 07-22 09:21:44.878 13516 13516 E AndroidRuntime:        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1452)
 07-22 09:21:44.878 13516 13516 E AndroidRuntime:        at android.os.Handler.dispatchMessage(Handler.java:102)
 07-22 09:21:44.878 13516 13516 E AndroidRuntime:        at android.os.Looper.loop(Looper.java:154)
07-22 09:21:44.878 13516 13516 E AndroidRuntime:        at android.app.ActivityThread.main(ActivityThread.java:5529)
07-22 09:21:44.878 13516 13516 E AndroidRuntime:        at java.lang.reflect.Method.invoke(Native Method)
07-22 09:21:44.878 13516 13516 E AndroidRuntime:        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)
07-22 09:21:44.878 13516 13516 E AndroidRuntime:        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:629)
07-22 09:21:44.878 13516 13516 E AndroidRuntime: Caused by: java.lang.IllegalAccessException: java.lang.Class<com.application.Alarm> is not accessible from java.lang.Class<android.app.ActivityThread>
07-22 09:21:44.878 13516 13516 E AndroidRuntime:        at java.lang.Class.newInstance(Native Method)
07-22 09:21:44.878 13516 13516 E AndroidRuntime:        at android.app.ActivityThread.handleReceiver(ActivityThread.java:2734)
07-22 09:21:44.878 13516 13516 E AndroidRuntime:        ... 8 more
07-22 09:21:44.885  1804  3742 D StatusBar: onNotificationPosted:  Key: 0|com.application|123456|charm://down/Id/abcd12340|10276 GroupKey: 0|com.application|123456|charm://down/Id/abcd12340|10276 Connected: true
07-22 09:21:44.885  1804  1804 D StatusBar:  GroupChild: false  GroupsContainsKey: false  IsUpdate: false IsGroupSummary: false hasIcon: true
07-22 09:21:44.886  1804  1804 D PhoneStatusBar: addNotification pkg=com.application;basepkg=com.application;id=123456
07-22 09:21:44.888  3047 10359 I GCoreUlr: Successfully inserted 1 locations
07-22 09:21:44.922  1804  1804 W ProgressBarDelegate: Unknown Drawable subclass, src=android.graphics.drawable.ScaleDrawable@eb9196
07-22 09:21:44.922  1804  1804 W ProgressBarDelegate: Unknown Drawable subclass, src=android.graphics.drawable.ScaleDrawable@aace117
07-22 09:21:44.932  3451  3518 I octvm_klo: klo lock

我不知道为什么我不能实例化接收器（警报.class），

I have no idea why I can't Instantiate a Receiver (Alarm.class),

@FXML void start()
{

    try{

    Schedule schedule =(Schedule) Class.forName("com.application.Schedular").newInstance();


    schedule.schedule();

    }

推荐答案

您的代码并不适合我：我必须将 intent 更改为中的 pIntent schedule（），我在Java实现上更改了 Schedule 到 Class （怎么做你导入它无论如何？）。除此之外，它对我运行良好（使用Android目标25），我没有任何例外。

Your code didn't exactly work for me: I had to change the intent to the pIntent in schedule(), and I changed Schedule to Class on the Java implementation (how do you import it anyway?). Other than that, it was running fine for me (using Android target 25), and I didn't have any exception.

我将发布初始解决方案（基于在你的方法上，然后是一个更好的方法。

I'll post the initial solution (based on your approach), and after that a better way to do it.

虽然是首选添加平台特定代码的方法遵循Charm Down设计模式（请参阅 https://bitbucket.org/胶子oss /魅力下降），这是一个非常快速和肮脏的Android代码工作方式：

While the preferred way to add platform specific code is following Charm Down design pattern (see https://bitbucket.org/gluon-oss/charm-down), a very quick and dirty way of getting the Android code working is this:

Android

Scheduler.java

package com.gluonhq.scheduler.android;

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.SystemClock;
import javafxports.android.FXActivity;

public class Scheduler {

    private final AlarmManager manager;

    public Scheduler() {
        manager = (AlarmManager) FXActivity.getInstance().getSystemService(Context.ALARM_SERVICE);
        Intent indent = new Intent(FXActivity.getInstance(), AlarmReceiver.class);
        PendingIntent pIntent = PendingIntent.getBroadcast(FXActivity.getInstance(), 0, indent, 0);

        manager.set(AlarmManager.RTC_WAKEUP, SystemClock.elapsedRealtime() + 2000, pIntent); 
    }
}

AlarmReceiver.java

package com.gluonhq.scheduler.android;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;

public class AlarmReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Toast.makeText(context, "Alarm ON", Toast.LENGTH_LONG).show();
    }

}

AndroidManifest.xml

<?xml version="1.0" encoding="UTF-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.gluonhq.scheduler" android:versionCode="1" android:versionName="1.0">
        <supports-screens android:xlargeScreens="true"/>
        <uses-permission android:name="android.permission.INTERNET"/>
        <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
        <uses-sdk android:minSdkVersion="4" android:targetSdkVersion="25"/>
        <application android:label="GluonScheduler" android:name="android.support.multidex.MultiDexApplication" android:icon="@mipmap/ic_launcher">
                <activity android:name="javafxports.android.FXActivity" android:label="GluonScheduler" android:configChanges="orientation|screenSize">
                        <meta-data android:name="main.class" android:value="com.gluonhq.scheduler.GluonScheduler"/>
                        <meta-data android:name="debug.port" android:value="0"/>
                        <intent-filter>
                                <action android:name="android.intent.action.MAIN"/>
                                <category android:name="android.intent.category.LAUNCHER"/>
                        </intent-filter>
                </activity>
                <receiver android:name="com.gluonhq.scheduler.android.AlarmReceiver" />
        </application>
</manifest

Main / Java

这是使用Gluon IDE插件的单视图模板项目的基本视图：

This is a Basic View from a Single view template project using the Gluon IDE plugin:

GluonScheduler.java

package com.gluonhq.scheduler;

import com.gluonhq.charm.glisten.application.MobileApplication;
import com.gluonhq.charm.glisten.visual.Swatch;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.stage.Stage;

public class GluonScheduler extends MobileApplication {

    public static final String BASIC_VIEW = HOME_VIEW;

    @Override
    public void init() {
        addViewFactory(BASIC_VIEW, () -> new BasicView(BASIC_VIEW));
    }

    @Override
    public void postInit(Scene scene) {
        Swatch.BLUE.assignTo(scene);

        ((Stage) scene.getWindow()).getIcons().add(new Image(GluonScheduler.class.getResourceAsStream("/icon.png")));
    }
}

BasicView.java

package com.gluonhq.scheduler;

import com.gluonhq.charm.glisten.control.AppBar;
import com.gluonhq.charm.glisten.control.Icon;
import com.gluonhq.charm.glisten.mvc.View;
import com.gluonhq.charm.glisten.visual.MaterialDesignIcon;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.geometry.Pos;
import javafx.scene.control.Button;
import javafx.scene.layout.VBox;

public class BasicView extends View {

    public BasicView(String name) {
        super(name);

        Button button = new Button("Schedule task");
        button.setGraphic(new Icon(MaterialDesignIcon.ALARM_ON));
        button.setOnAction(e -> {

            try {
                Class c = Class.forName("com.gluonhq.scheduler.android.Scheduler");
                c.newInstance();
            } catch (ClassNotFoundException | InstantiationException | IllegalAccessException ex) {
                Logger.getLogger(BasicView.class.getName()).log(Level.SEVERE, null, ex);
            }

        });

        VBox controls = new VBox(button);
        controls.setAlignment(Pos.CENTER);

        setCenter(controls);
    }

    @Override
    protected void updateAppBar(AppBar appBar) {
        appBar.setNavIcon(MaterialDesignIcon.MENU.button(e -> System.out.println("Menu")));
        appBar.setTitleText("Basic View");
    }
}

build.gradle

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'org.javafxports:jfxmobile-plugin:1.3.6'
    }
}

apply plugin: 'org.javafxports.jfxmobile'

repositories {
    jcenter()
    maven {
        url 'http://nexus.gluonhq.com/nexus/content/repositories/releases'
    }
}

mainClassName = 'com.gluonhq.scheduler.GluonScheduler'

dependencies {
    compile 'com.gluonhq:charm:4.3.5'
}

jfxmobile {
    downConfig {
        version = '3.3.0'
        // Do not edit the line below. Use Gluon Mobile Settings in your project context menu instead
        plugins 'display', 'lifecycle', 'statusbar', 'storage'
    }
    android {
        manifest = 'src/android/AndroidManifest.xml'
    }
    ios {
        infoPList = file('src/ios/Default-Info.plist')
        forceLinkClasses = [
                'com.gluonhq.**.*',
                'javax.annotations.**.*',
                'javax.inject.**.*',
                'javax.json.**.*',
                'org.glassfish.json.**.*'
        ]
    }
}

部署到您的Android设备（ ./ gradlew androidInstall ）并运行。按下按钮，两秒钟后你会看到祝酒词：

Deploy to your Android device (./gradlew androidInstall) and run. Press the button and two seconds later you will see the toast:

AlarmService

虽然上面的代码有效，但使用 Class.forName 并不是很方便。

While the above code works, it is not very convenient to use Class.forName.

在Charm Down服务（例如LocalNotification）之后，我会这样做（你必须保持相同的包名）：

Following the Charm Down services (LocalNotification for instance), I'd do it this way instead (you have to keep the same package names):

Java

AlarmService.java

package com.gluonhq.charm.down.plugins;

public interface AlarmService {
    public void schedule();
}

AlarmServiceFactory.java

package com.gluonhq.charm.down.plugins;

import com.gluonhq.charm.down.DefaultServiceFactory;

public class AlarmServiceFactory extends DefaultServiceFactory<AlarmService> {

    public AlarmServiceFactory() {
        super(AlarmService.class);
    }

}

Android

AndroidAlarmService.java

package com.gluonhq.charm.down.plugins.android;

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.SystemClock;
import com.gluonhq.charm.down.plugins.AlarmService;
import com.gluonhq.scheduler.android.AlarmReceiver;
import javafxports.android.FXActivity;

public class AndroidAlarmService implements AlarmService {

    private final AlarmManager manager;
    private final FXActivity activity;

    public AndroidAlarmService() {
        activity = FXActivity.getInstance();
        manager = (AlarmManager) activity.getSystemService(Context.ALARM_SERVICE);
    }
    @Override
    public void schedule() {
        Intent indent = new Intent(activity, AlarmReceiver.class);
        PendingIntent pIntent = PendingIntent.getBroadcast(activity, 0, indent, 0);

        manager.set(AlarmManager.RTC_WAKEUP, SystemClock.elapsedRealtime() + 2000, pIntent); 
    }

}

（保持相同 AlarmReceiver 上面的课程。）

(keeping the same AlarmReceiver class as above).

最后，在你的观点上：

BasicView.java

button.setOnAction(e -> 
        Services.get(AlarmService.class).ifPresent(AlarmService::schedule));

现在您可以再次部署和运行，结果将是相同的。但显然这种首选方式有许多优点。

Now you can deploy and run again, and the result will be the same. But obviously this preferred way has many more advantages.

• 使用该服务，您也可以在桌面上运行或部署到iOS：应用程序可以正常工作（点击按钮时不会这样做任何事情。


• 如果需要，您可以为桌面和iOS实施解决方案。


• 您可以通过界面轻松添加更多功能。

这篇关于使用Gluon-mobile中的ALARM_SERVICE服务在Android中安排任务的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！