我正在使用 lib让 JobScheduler 在 Lollipop 之前的设备上工作。我正在使用 Lollipop 设备。问题是 mJobScheduler.schedule(job) 应该启动我的 jobservice 但它没有启动。此外，当我包含 .setPeriodic(2000) 方法时，应用程序会因此崩溃

堆栈跟踪。

08-06 00:37:06.729 19693-19693/? E/AndroidRuntime: FATAL EXCEPTION: main
                                               Process: rishabh.example.com.myapplication, PID: 19693
                                               java.lang.RuntimeException: Unable to start activity ComponentInfo{rishabh.example.com.myapplication/rishabh.example.com.myapplication.MainActivity}: java.lang.IllegalArgumentException: Can't call setOverrideDeadline() on a periodic job.
                                                   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2339)
                                                   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2413)
                                                   at android.app.ActivityThread.access$800(ActivityThread.java:155)
                                                   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1317)
                                                   at android.os.Handler.dispatchMessage(Handler.java:102)
                                                   at android.os.Looper.loop(Looper.java:135)
                                                   at android.app.ActivityThread.main(ActivityThread.java:5343)
                                                   at java.lang.reflect.Method.invoke(Native Method)
                                                   at java.lang.reflect.Method.invoke(Method.java:372)
                                                   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905)
                                                   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)
                                                Caused by: java.lang.IllegalArgumentException: Can't call setOverrideDeadline() on a periodic job.
                                                   at me.tatarka.support.job.JobInfo$Builder.build(JobInfo.java:477)
                                                   at rishabh.example.com.myapplication.MainActivity.constructJob(MainActivity.java:30)
                                                   at rishabh.example.com.myapplication.MainActivity.onCreate(MainActivity.java:19)
                                                   at android.app.Activity.performCreate(Activity.java:6010)
                                                   at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1129)
                                                   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2292)
                                                   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2413) 
                                                   at android.app.ActivityThread.access$800(ActivityThread.java:155) 
                                                   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1317) 
                                                   at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                   at android.os.Looper.loop(Looper.java:135) 
                                                   at android.app.ActivityThread.main(ActivityThread.java:5343) 
                                                   at java.lang.reflect.Method.invoke(Native Method) 
                                                   at java.lang.reflect.Method.invoke(Method.java:372) 
                                                   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905) 
                                                   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700) 

我的主要 Activity

public class MainActivity extends AppCompatActivity {

JobScheduler mJobScheduler;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mJobScheduler=JobScheduler.getInstance(this);
    constructJob();
}

private void constructJob() {

    JobInfo job = new JobInfo.Builder(0 /*jobid*/, new ComponentName(this,MyService.class))
            .setMinimumLatency(1000)
            .setOverrideDeadline(2000)
            .setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED)
            .setRequiresCharging(true)
            .setPeriodic(2000)
            .build();



    mJobScheduler.schedule(job);

}
}

我的服务类

public class MyService extends JobService {
@Override
public boolean onStartJob(JobParameters params) {
    Toast.makeText(getApplicationContext(),"onStartjob",Toast.LENGTH_SHORT).show();
    Log.i("tag","onstartjob");
    return false;
}

@Override
public boolean onStopJob(JobParameters params) {
    return false;
}
}

我的 list 文件

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="rishabh.example.com.myapplication">
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    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=".MyService"
        android:permission="android.permission.BIND_JOB_SERVICE"
        android:exported="true">

    </service>
</application>

最佳答案

您不能同时使用 setPeriodic() 和 setOverrideDeadline()。

Because it doesn't make sense setting this property on a periodic job, doing so will throw an IllegalArgumentException when build() is called.

参见:JobInfo.Builder javadoc

关于android - JobScheduler.schedule(job) 没有启动 JobService，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38796350/