1. JobIntentService crash fix

使用JobIntentService执行异常操作时，遇到一个crash：Caller no longer running, last stopped +25s437ms because: timed out while starting。

Fatal Exception: java.lang.RuntimeException: An error occurred while executing doInBackground()
       at android.os.AsyncTask$3.done(AsyncTask.java:353)
       at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:383)
       at java.util.concurrent.FutureTask.setException(FutureTask.java:252)
       at java.util.concurrent.FutureTask.run(FutureTask.java:271)
       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
       at java.lang.Thread.run(Thread.java:764)
Caused by java.lang.SecurityException: Caller no longer running, last stopped +25s437ms because: timed out while starting
       at android.os.Parcel.readException(Parcel.java:1942)
       at android.os.Parcel.readException(Parcel.java:1888)
       at android.app.job.IJobCallback$Stub$Proxy.dequeueWork(IJobCallback.java:191)
       at android.app.job.JobParameters.dequeueWork(JobParameters.java:196)
       at android.support.v4.app.JobIntentService$JobServiceEngineImpl.dequeueWork(JobIntentService.java:309)
       at android.support.v4.app.JobIntentService.dequeueWork(JobIntentService.java:627)
       at android.support.v4.app.JobIntentService$CommandProcessor.doInBackground(JobIntentService.java:384)
       at android.support.v4.app.JobIntentService$CommandProcessor.doInBackground(JobIntentService.java:377)
       at android.os.AsyncTask$2.call(AsyncTask.java:333)
       at java.util.concurrent.FutureTask.run(FutureTask.java:266)
       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
       at java.lang.Thread.run(Thread.java:764)

99% of our crashes are happening on Android O, with a large number of those users on Samsung devices

在Github上有同样的issues及解决办法：

1.1.1. SafeJobIntentService

package android.support.v4.app;

import android.os.Build;
import android.support.annotation.RestrictTo;

/**
 */
@RestrictTo(RestrictTo.Scope.LIBRARY)
public abstract class SafeJobIntentService extends JobIntentService {

    @Override
    GenericWorkItem dequeueWork() {
        try {
            return super.dequeueWork();
        } catch (SecurityException e) {
            e.printStackTrace();
            return null;
        }
    }

    @Override
    public void onCreate() {
        super.onCreate();
        // override mJobImpl with safe class to ignore SecurityException
        if (Build.VERSION.SDK_INT >= 26) { // 如果Android版本大于等于O版本
            mJobImpl = new SafeJobServiceEngineImpl(this);
        } else {
            mJobImpl = null;
        }
    }
}

1.1.2. SafeJobServiceEngineImpl

package android.support.v4.app;

import android.app.job.JobParameters;
import android.app.job.JobServiceEngine;
import android.app.job.JobWorkItem;
import android.content.Intent;
import android.os.IBinder;
import android.support.annotation.RequiresApi;
import android.util.Log;

/**
 * Implementation of a JobServiceEngine for interaction with JobIntentService.
 */
@RequiresApi(26)
public class SafeJobServiceEngineImpl extends JobServiceEngine
        implements JobIntentService.CompatJobEngine {
    static final String TAG = "JobServiceEngineImpl";

    static final boolean DEBUG = false;

    final JobIntentService mService;
    final Object mLock = new Object();
    JobParameters mParams;

    final class WrapperWorkItem implements JobIntentService.GenericWorkItem {
        final JobWorkItem mJobWork;

        WrapperWorkItem(JobWorkItem jobWork) {
            mJobWork = jobWork;
        }

        @Override
        public Intent getIntent() {
            return mJobWork.getIntent();
        }

        @Override
        public void complete() {
            synchronized (mLock) {
                if (mParams != null) {
                    try {
                        mParams.completeWork(mJobWork);
                    } catch (SecurityException se) {
                        // ignore
                        se.printStackTrace();
                    }
                }
            }
        }
    }

    SafeJobServiceEngineImpl(JobIntentService service) {
        super(service);
        mService = service;
    }

    @Override
    public IBinder compatGetBinder() {
        return getBinder();
    }

    @Override
    public boolean onStartJob(JobParameters params) {
        if (DEBUG) Log.d(TAG, "onStartJob: " + params);
        mParams = params;
        // We can now start dequeuing work!
        mService.ensureProcessorRunningLocked(false);
        return true;
    }

    @Override
    public boolean onStopJob(JobParameters params) {
        if (DEBUG) Log.d(TAG, "onStopJob: " + params);
        boolean result = mService.doStopCurrentWork();
        synchronized (mLock) {
            // Once we return, the job is stopped, so its JobParameters are no
            // longer valid and we should not be doing anything with them.
            mParams = null;
        }
        return result;
    }

    /**
     * Dequeue some work.
     */
    @Override
    public JobIntentService.GenericWorkItem dequeueWork() {
        JobWorkItem work = null;
        synchronized (mLock) {
            if (mParams == null) {
                return null;
            }
            try {
                work = mParams.dequeueWork();
            } catch (SecurityException se) {
                // ignore it
                se.printStackTrace();
            }
        }
        if (work != null) {
            work.getIntent().setExtrasClassLoader(mService.getClassLoader());
            return new WrapperWorkItem(work);
        } else {
            return null;
        }
    }
}

issues

How to fix