JobScheduler在条件满足要求时不会重新启动

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英文:

JobScheduler won't restart when condition meets the requirements

问题

以下是翻译好的内容:

我已经将我的JobScheduler设置为在手机充电并连接到 WiFi 时启动。但是当我关闭 WiFi 时,它会显示作业已取消,但当我重新打开 WiFi 时,它不会重新启动。以下是我的代码:

MainActivity.java

private static final String TAG = "MainActivity";
public void scheduleJob(View v) {
    ComponentName componentName = new ComponentName(this, ExampleJobService.class);
    JobInfo info = new JobInfo.Builder(123, componentName)
            .setRequiresCharging(true)
            .setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED)
            .setPersisted(true)
            .setPeriodic(15 * 60 * 1000)
            .build();

    JobScheduler scheduler = (JobScheduler) getSystemService(JOB_SCHEDULER_SERVICE);
    int resultCode = scheduler.schedule(info);
    if (resultCode == JobScheduler.RESULT_SUCCESS) {
        Log.d(TAG, "Job scheduled");
    } else {
        Log.d(TAG, "Job scheduling failed");
    }
}

public void cancelJob(View v){
    JobScheduler scheduler = (JobScheduler) getSystemService(JOB_SCHEDULER_SERVICE);
    scheduler.cancel(123);
    Log.d(TAG, "Job cancelled");
}

ExampleJobService.java

private static final String TAG = "ExampleJobService";
private boolean jobCanceled = false;

@Override
public boolean onStartJob(JobParameters params) {
    Log.d(TAG, "Job started");
    doBackgroundWork(params);

    return true;
}

private void doBackgroundWork(final JobParameters params) {
    new Thread(new Runnable() {
        @Override
        public void run() {
            for (int i = 0; i < 10; i++) {
                Log.d(TAG, "run: " + i);
                if (jobCanceled) {
                    return;
                }

                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }

            Log.d(TAG, "Job finished");
            jobFinished(params, false);
        }
    }).start();
}

@Override
public boolean onStopJob(JobParameters params) {
    Log.d(TAG, "Job cancelled before completion");
    jobCanceled = true;
    return true;
}

Manifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.hoversfw.test">

    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <service android:name=".ExampleJobService"
            android:permission="android.permission.BIND_JOB_SERVICE"/>
    </application>

</manifest>

当我关闭 WiFi,安排任务,终止应用进程,然后打开 WiFi,JobScheduler 会启动并在 Logcat 中显示。此外,当我安排任务并启动它后,然后终止应用,Logcat 中的打印信息就会停止。因此,我认为每当 JobScheduler 被中断时,它就不会重新启动。我已经添加了所需的权限,并且 minSDK 是 21。所以关于权限应该没有问题。请帮助。

英文:

I have set my JobScheduler to start when phone is charging and connected to wifi. But when I turn off wifi it says job cancelled, but when I turn it back on it won't restart. Here's my code:<br><br>MainActivity.java

private static final String TAG=&quot;MainActivity&quot;;
public void scheduleJob(View v) {
    ComponentName componentName = new ComponentName(this, ExampleJobService.class);
    JobInfo info = new JobInfo.Builder(123, componentName)
            .setRequiresCharging(true)
            .setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED)
            .setPersisted(true)
            .setPeriodic(15 * 60 * 1000)
            .build();

    JobScheduler scheduler = (JobScheduler) getSystemService(JOB_SCHEDULER_SERVICE);
    int resultCode = scheduler.schedule(info);
    if (resultCode == JobScheduler.RESULT_SUCCESS) {
        Log.d(TAG, &quot;Job scheduled&quot;);
    } else {
        Log.d(TAG, &quot;Job scheduling failed&quot;);
    }
}

public void cancelJob(View v){
    JobScheduler scheduler=(JobScheduler)getSystemService(JOB_SCHEDULER_SERVICE);
    scheduler.cancel(123);
    Log.d(TAG,&quot;Job cancelled&quot;);
}

<br>
ExampleJobService.java

private static final String TAG=&quot;ExampleJobService&quot;;
private boolean jobCanceled=false;

@Override
public boolean onStartJob(JobParameters params) {
    Log.d(TAG, &quot;Job started&quot;);
    doBackgroundWork(params);

    return true;
}

private void doBackgroundWork(final JobParameters params) {
    new Thread(new Runnable() {
        @Override
        public void run() {
            for (int i = 0; i &lt; 10; i++) {
                Log.d(TAG, &quot;run: &quot; + i);
                if (jobCanceled) {
                    return;
                }

                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }

            Log.d(TAG, &quot;Job finished&quot;);
            jobFinished(params, false);
        }
    }).start();
}

@Override
public boolean onStopJob(JobParameters params) {
    Log.d(TAG, &quot;Job cancelled before completion&quot;);
    jobCanceled = true;
    return true;
}

Manifest.xml

&lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
&lt;manifest xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
    package=&quot;com.hoversfw.test&quot;&gt;

    &lt;uses-permission android:name=&quot;android.permission.RECEIVE_BOOT_COMPLETED&quot; /&gt;
    &lt;application
        android:allowBackup=&quot;true&quot;
        android:icon=&quot;@mipmap/ic_launcher&quot;
        android:label=&quot;@string/app_name&quot;
        android:roundIcon=&quot;@mipmap/ic_launcher_round&quot;
        android:supportsRtl=&quot;true&quot;
        android:theme=&quot;@style/AppTheme&quot;&gt;
        &lt;activity android:name=&quot;.MainActivity&quot;&gt;
            &lt;intent-filter&gt;
                &lt;action android:name=&quot;android.intent.action.MAIN&quot; /&gt;

                &lt;category android:name=&quot;android.intent.category.LAUNCHER&quot; /&gt;
            &lt;/intent-filter&gt;
        &lt;/activity&gt;
        &lt;service android:name=&quot;.ExampleJobService&quot;
            android:permission=&quot;android.permission.BIND_JOB_SERVICE&quot;/&gt;
    &lt;/application&gt;

&lt;/manifest&gt;

When I turn off wifi, schedule job, kill app process, and turn wifi on, the JobScheduler starts and I see it printing in the Logcat. Also, when I schedule it and it starts, then kill app, it just stopped printing in Logcat. So I think whenever the JobScheduler got interrupted, it just won't restart. I have permissions added, and minSDK is 21. So there should be no problem about permissions. Help

答案1

得分: 1

JobScheduler在调用jobFinished(params, true)时将会重新启动。您可以在返回之前添加此操作。

if (jobCanceled) {
    jobFinished(params, true);
    return;
}
英文:

JobSchleduler will be restart when you call jobFinished(params, true). You can add it before return

if (jobCanceled) {
    jobFinished(params, true);
    return;
}

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  • 本文由 发表于 2020年5月3日 12:34:18
  • 转载请务必保留本文链接:https://go.coder-hub.com/61569683.html
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