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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.Build;
import android.os.IBinder;
import android.support.annotation.RequiresApi;
import android.util.Log;
public abstract class SafeJobIntentService extends JobIntentService {
@Override
public void onCreate() {
super.onCreate();
if (Build.VERSION.SDK_INT >= 26) {
mJobImpl = new SafeJobServiceEngineImpl(this);
}
}
/**
* Implementation of a safe JobServiceEngine for interaction with JobIntentService.
*/
@RequiresApi(26)
static final 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 e) {
Log.e(TAG, Log.getStackTraceString(e));
}
}
}
}
}
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, "onStartJob: " + 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 e) {
Log.e(TAG, Log.getStackTraceString(e));
}
}
if (work != null) {
work.getIntent().setExtrasClassLoader(mService.getClassLoader());
return new WrapperWorkItem(work);
} else {
return null;
}
}
}
}
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