JobScheduler在条件满足要求时不会重新启动

huangapple
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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

  1. private static final String TAG = "MainActivity";
  2. public void scheduleJob(View v) {
  3.     ComponentName componentName = new ComponentName(this, ExampleJobService.class);
  4.     JobInfo info = new JobInfo.Builder(123, componentName)
  5.             .setRequiresCharging(true)
  6.             .setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED)
  7.             .setPersisted(true)
  8.             .setPeriodic(15 * 60 * 1000)
  9.             .build();
  11.     JobScheduler scheduler = (JobScheduler) getSystemService(JOB_SCHEDULER_SERVICE);
  12.     int resultCode = scheduler.schedule(info);
  13.     if (resultCode == JobScheduler.RESULT_SUCCESS) {
  14.         Log.d(TAG, "Job scheduled");
  15.     } else {
  16.         Log.d(TAG, "Job scheduling failed");
  17.     }
  18. }
  20. public void cancelJob(View v){
  21.     JobScheduler scheduler = (JobScheduler) getSystemService(JOB_SCHEDULER_SERVICE);
  22.     scheduler.cancel(123);
  23.     Log.d(TAG, "Job cancelled");
  24. }

ExampleJobService.java

  1. private static final String TAG = "ExampleJobService";
  2. private boolean jobCanceled = false;
  4. @Override
  5. public boolean onStartJob(JobParameters params) {
  6.     Log.d(TAG, "Job started");
  7.     doBackgroundWork(params);
  9.     return true;
  10. }
  12. private void doBackgroundWork(final JobParameters params) {
  13.     new Thread(new Runnable() {
  14.         @Override
  15.         public void run() {
  16.             for (int i = 0; i < 10; i++) {
  17.                 Log.d(TAG, "run: " + i);
  18.                 if (jobCanceled) {
  19.                     return;
  20.                 }
  22.                 try {
  23.                     Thread.sleep(1000);
  24.                 } catch (InterruptedException e) {
  25.                     e.printStackTrace();
  26.                 }
  27.             }
  29.             Log.d(TAG, "Job finished");
  30.             jobFinished(params, false);
  31.         }
  32.     }).start();
  33. }
  35. @Override
  36. public boolean onStopJob(JobParameters params) {
  37.     Log.d(TAG, "Job cancelled before completion");
  38.     jobCanceled = true;
  39.     return true;
  40. }

Manifest.xml

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <manifest xmlns:android="http://schemas.android.com/apk/res/android"
  3.     package="com.hoversfw.test">
  5.     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
  6.     <application
  7.         android:allowBackup="true"
  8.         android:icon="@mipmap/ic_launcher"
  9.         android:label="@string/app_name"
  10.         android:roundIcon="@mipmap/ic_launcher_round"
  11.         android:supportsRtl="true"
  12.         android:theme="@style/AppTheme">
  13.         <activity android:name=".MainActivity">
  14.             <intent-filter>
  15.                 <action android:name="android.intent.action.MAIN" />
  17.                 <category android:name="android.intent.category.LAUNCHER" />
  18.             </intent-filter>
  19.         </activity>
  20.         <service android:name=".ExampleJobService"
  21.             android:permission="android.permission.BIND_JOB_SERVICE"/>
  22.     </application>
  24. </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

  1. private static final String TAG=&quot;MainActivity&quot;;
  2. public void scheduleJob(View v) {
  3.     ComponentName componentName = new ComponentName(this, ExampleJobService.class);
  4.     JobInfo info = new JobInfo.Builder(123, componentName)
  5.             .setRequiresCharging(true)
  6.             .setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED)
  7.             .setPersisted(true)
  8.             .setPeriodic(15 * 60 * 1000)
  9.             .build();
  11.     JobScheduler scheduler = (JobScheduler) getSystemService(JOB_SCHEDULER_SERVICE);
  12.     int resultCode = scheduler.schedule(info);
  13.     if (resultCode == JobScheduler.RESULT_SUCCESS) {
  14.         Log.d(TAG, &quot;Job scheduled&quot;);
  15.     } else {
  16.         Log.d(TAG, &quot;Job scheduling failed&quot;);
  17.     }
  18. }
  20. public void cancelJob(View v){
  21.     JobScheduler scheduler=(JobScheduler)getSystemService(JOB_SCHEDULER_SERVICE);
  22.     scheduler.cancel(123);
  23.     Log.d(TAG,&quot;Job cancelled&quot;);
  24. }

<br>
ExampleJobService.java

  1. private static final String TAG=&quot;ExampleJobService&quot;;
  2. private boolean jobCanceled=false;
  4. @Override
  5. public boolean onStartJob(JobParameters params) {
  6.     Log.d(TAG, &quot;Job started&quot;);
  7.     doBackgroundWork(params);
  9.     return true;
  10. }
  12. private void doBackgroundWork(final JobParameters params) {
  13.     new Thread(new Runnable() {
  14.         @Override
  15.         public void run() {
  16.             for (int i = 0; i &lt; 10; i++) {
  17.                 Log.d(TAG, &quot;run: &quot; + i);
  18.                 if (jobCanceled) {
  19.                     return;
  20.                 }
  22.                 try {
  23.                     Thread.sleep(1000);
  24.                 } catch (InterruptedException e) {
  25.                     e.printStackTrace();
  26.                 }
  27.             }
  29.             Log.d(TAG, &quot;Job finished&quot;);
  30.             jobFinished(params, false);
  31.         }
  32.     }).start();
  33. }
  35. @Override
  36. public boolean onStopJob(JobParameters params) {
  37.     Log.d(TAG, &quot;Job cancelled before completion&quot;);
  38.     jobCanceled = true;
  39.     return true;
  40. }

Manifest.xml

  1. &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
  2. &lt;manifest xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
  3.     package=&quot;com.hoversfw.test&quot;&gt;
  5.     &lt;uses-permission android:name=&quot;android.permission.RECEIVE_BOOT_COMPLETED&quot; /&gt;
  6.     &lt;application
  7.         android:allowBackup=&quot;true&quot;
  8.         android:icon=&quot;@mipmap/ic_launcher&quot;
  9.         android:label=&quot;@string/app_name&quot;
  10.         android:roundIcon=&quot;@mipmap/ic_launcher_round&quot;
  11.         android:supportsRtl=&quot;true&quot;
  12.         android:theme=&quot;@style/AppTheme&quot;&gt;
  13.         &lt;activity android:name=&quot;.MainActivity&quot;&gt;
  14.             &lt;intent-filter&gt;
  15.                 &lt;action android:name=&quot;android.intent.action.MAIN&quot; /&gt;
  17.                 &lt;category android:name=&quot;android.intent.category.LAUNCHER&quot; /&gt;
  18.             &lt;/intent-filter&gt;
  19.         &lt;/activity&gt;
  20.         &lt;service android:name=&quot;.ExampleJobService&quot;
  21.             android:permission=&quot;android.permission.BIND_JOB_SERVICE&quot;/&gt;
  22.     &lt;/application&gt;
  24. &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。

  1. if (jobCanceled) {
  2.     jobFinished(params, true);
  3.     return;
  4. }
英文:

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

  1. if (jobCanceled) {
  2.     jobFinished(params, true);
  3.     return;
  4. }

huangapple
  • 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
  • android
  • android-jobscheduler
  • java
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