編輯:關於Android編程
Android Priority Job Queue (Job Manager)完整的解決上上述問題:容錯重試回滾任務機制。具體體現在onRun和shouldReRunOnThrowable,如果一個線程任務在onRun裡面拋出異常失敗,那麼將自動進入shouldReRunOnThrowable,然後在shouldReRunOnThrowable會決定是否重試RetryConstraint.RETRY,或者干脆放棄任務RetryConstraint.CANCEL,這裡面的重試或者放棄邏輯策略由開發者決定,比如一般的,可以由重試次數決定線程是否還有必要執行,假設一個任務重試了3次仍然不成功,那麼就放棄(返RetryConstraint.CANCEL)。一旦放棄後,代碼將進入onCanel內,在這裡面處理善後事宜,這個機制有些類似Java的try-catch機制。
在附錄文章4的基礎上,僅僅修改MyJob.java代碼演示上述機制:
package zhangphil.app; import android.os.SystemClock; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.util.Log; import com.birbit.android.jobqueue.Job; import com.birbit.android.jobqueue.Params; import com.birbit.android.jobqueue.RetryConstraint; /** * Created by Phil on 2016/10/9. */ public class MyJob extends Job { private String tag; public MyJob(String tag) { super(new Params(500).requireNetwork().persist().groupBy(tag)); this.tag = tag; Log.d(tag, "初始化"); } @Override public void onAdded() { Log.d(tag, "添加任務"); } //在這裡面放置耗時的後台線程化任務 @Override public void onRun() throws Throwable { Log.d(tag, "開始運行..."); SystemClock.sleep(2000); //此處拋出異常後,jobqueue將立即自動進入shouldReRunOnThrowable throw new Exception(); //Log.d(tag, "完成"); } @Override protected RetryConstraint shouldReRunOnThrowable(@NonNull Throwable throwable, int runCount, int maxRunCount) { // An error occurred in onRun. // Return value determines whether this job should retry or cancel. You can further // specify a backoff strategy or change the job's priority. You can also apply the // delay to the whole group to preserve jobs' running order. Log.d(tag, "runCount: " + runCount + " maxRunCount: " + maxRunCount); //如果重試了3次仍未成功,那麼就放棄執行任務 if (runCount == 3) return RetryConstraint.CANCEL; //這樣的返回將導致onRun方法的再次執行,重試,重試將導致代碼再次進入onRun。同時,runCount自加1 return RetryConstraint.RETRY; } //如果重試超過限定次數,將onCancel. //如果用戶主動放棄刪掉這個任務,也一樣進入onCancel @Override protected void onCancel(int cancelReason, @Nullable Throwable throwable) { Log.d(tag, "cancelReason:" + cancelReason); } }
代碼運行後Logcat完整輸出:
10-10 15:51:39.488 16856-16856/zhangphil.app D/任務1: 初始化 10-10 15:51:39.488 16856-16856/zhangphil.app D/zhangphiljob: [queue_ADD_JOB_2] post message com.birbit.android.jobqueue.messaging.message.AddJobMessage@b1a3ff0 10-10 15:51:39.488 16856-16856/zhangphil.app D/Activity: performCreate Call Injection manager 10-10 15:51:39.488 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] looking for next message at time 1476085899495109636 10-10 15:51:39.488 16856-17353/zhangphil.app D/zhangphiljob: flushing messages at time 1476085899495109636 10-10 15:51:39.488 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] next delayed job null 10-10 15:51:39.488 16856-17353/zhangphil.app D/zhangphiljob: [queue_ADD_JOB_2] remove message com.birbit.android.jobqueue.messaging.message.AddJobMessage@b1a3ff0 10-10 15:51:39.488 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] consuming message of type ADD_JOB 10-10 15:51:39.488 16856-16856/zhangphil.app I/InjectionManager: dispatchOnViewCreated > Target : zhangphil.app.MainActivity isFragment :false 10-10 15:51:39.528 16856-17353/zhangphil.app D/zhangphiljob: added job class: MyJob priority: 500 delay: 0 group : 任務1 persistent: true 10-10 15:51:39.528 16856-17353/zhangphil.app D/任務1: 添加任務 10-10 15:51:39.528 16856-17353/zhangphil.app D/zhangphiljob: considering adding a new consumer. Should poke all waiting? false isRunning? true waiting workers? 0 10-10 15:51:39.528 16856-17353/zhangphil.app D/zhangphiljob: check above load factor: totalCons:0 minCons:1 maxConsCount: 3, loadFactor 3 remainingJobs: 1 running holders: 0. isAbove:true 10-10 15:51:39.528 16856-17353/zhangphil.app D/zhangphiljob: nothing has been poked. are we above load factor? true 10-10 15:51:39.528 16856-17353/zhangphil.app D/zhangphiljob: adding another consumer 10-10 15:51:39.538 16856-16856/zhangphil.app D/SecWifiDisplayUtil: Metadata value : SecSettings2 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] looking for next message at time 1476085899551798802 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: flushing messages at time 1476085899551798802 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] next delayed job null 10-10 15:51:39.548 16856-16856/zhangphil.app D/ViewRootImpl: #1 mView = com.android.internal.policy.PhoneWindow$DecorView{8602777 I.E...... R.....ID 0,0-0,0} 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: [queue_ADD_JOB_2] remove message null 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: joq idle. running:? true 10-10 15:51:39.548 16856-17358/zhangphil.app D/zhangphiljob: flushing messages at time 1476085899553556250 10-10 15:51:39.548 16856-17358/zhangphil.app D/zhangphiljob: [consumer_3] remove message null 10-10 15:51:39.548 16856-17358/zhangphil.app D/zhangphiljob: consumer manager on idle 10-10 15:51:39.548 16856-17358/zhangphil.app D/zhangphiljob: [queue_JOB_CONSUMER_IDLE_4] post message com.birbit.android.jobqueue.messaging.message.JobConsumerIdleMessage@a013fe4 10-10 15:51:39.548 16856-17358/zhangphil.app D/zhangphiljob: [consumer_3] will wait on the lock forever 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: Job queue idle. next job at: -9223372036854775808 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: add delayed message com.birbit.android.jobqueue.messaging.message.ConstraintChangeMessage@257dc4d at time -9223372036854775808 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] did on idle post a message? true 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] looking for next message at time 1476085899555766615 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: flushing messages at time 1476085899555766615 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: [queue_CONSTRAINT_CHANGE_5] post message com.birbit.android.jobqueue.messaging.message.ConstraintChangeMessage@257dc4d 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] next delayed job null 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: [queue_CONSTRAINT_CHANGE_5] remove message com.birbit.android.jobqueue.messaging.message.ConstraintChangeMessage@257dc4d 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] consuming message of type CONSTRAINT_CHANGE 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: considering adding a new consumer. Should poke all waiting? true isRunning? true waiting workers? 0 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: check above load factor: totalCons:1 minCons:1 maxConsCount: 3, loadFactor 3 remainingJobs: 1 running holders: 0. isAbove:false 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: nothing has been poked. are we above load factor? false 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] looking for next message at time 1476085899559063386 10-10 15:51:39.548 16856-17359/zhangphil.app D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: flushing messages at time 1476085899559063386 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] next delayed job null 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: [queue_CONSTRAINT_CHANGE_5] remove message null 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: [queue_ADD_JOB_2] remove message null 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: [queue_JOB_CONSUMER_IDLE_4] remove message com.birbit.android.jobqueue.messaging.message.JobConsumerIdleMessage@a013fe4 10-10 15:51:39.548 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] consuming message of type JOB_CONSUMER_IDLE 10-10 15:51:39.558 16856-16856/zhangphil.app W/ActivityThread: AppLock checkAppLockState isAppLocked = false pkgName = zhangphil.app showWhenLocked = false 10-10 15:51:39.568 16856-17353/zhangphil.app D/zhangphiljob: [consumer_3] post message com.birbit.android.jobqueue.messaging.message.RunJobMessage@725c413 10-10 15:51:39.568 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] looking for next message at time 1476085899571643802 10-10 15:51:39.568 16856-17353/zhangphil.app D/zhangphiljob: flushing messages at time 1476085899571643802 10-10 15:51:39.568 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] next delayed job null 10-10 15:51:39.568 16856-17353/zhangphil.app D/zhangphiljob: [queue_CONSTRAINT_CHANGE_5] remove message null 10-10 15:51:39.568 16856-17353/zhangphil.app D/zhangphiljob: [queue_ADD_JOB_2] remove message null 10-10 15:51:39.568 16856-17353/zhangphil.app D/zhangphiljob: [queue_JOB_CONSUMER_IDLE_4] remove message null 10-10 15:51:39.568 16856-17353/zhangphil.app D/zhangphiljob: joq idle. running:? true 10-10 15:51:39.568 16856-17358/zhangphil.app D/zhangphiljob: flushing messages at time 1476085899571733438 10-10 15:51:39.568 16856-17358/zhangphil.app D/zhangphiljob: [consumer_3] remove message com.birbit.android.jobqueue.messaging.message.RunJobMessage@725c413 10-10 15:51:39.568 16856-17358/zhangphil.app D/zhangphiljob: running job JobHolder 10-10 15:51:39.568 16856-17358/zhangphil.app D/zhangphiljob: running job MyJob 10-10 15:51:39.568 16856-17358/zhangphil.app D/任務1: 開始運行... 10-10 15:51:39.568 16856-17353/zhangphil.app D/zhangphiljob: Job queue idle. next job at: null 10-10 15:51:39.568 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] did on idle post a message? false 10-10 15:51:39.588 16856-17359/zhangphil.app I/Adreno: QUALCOMM build : 0039a8c, I5bc0f577f9 Build Date : 08/03/16 OpenGL ES Shader Compiler Version: XE031.08.00.02 Local Branch : Remote Branch : refs/tags/AU_LINUX_ANDROID_LA.HB.1.1.1.C1.06.00.00.165.223 Remote Branch : NONE Reconstruct Branch : NOTHING 10-10 15:51:39.588 16856-17359/zhangphil.app D/libEGL: eglInitialize EGLDisplay = 0x7f93bfa188 10-10 15:51:39.588 16856-17359/zhangphil.app I/OpenGLRenderer: Initialized EGL, version 1.4 10-10 15:51:39.618 16856-16856/zhangphil.app D/ViewRootImpl: MSG_RESIZED_REPORT: ci=Rect(0, 96 - 0, 0) vi=Rect(0, 96 - 0, 0) or=1 10-10 15:51:39.628 16856-16856/zhangphil.app W/DisplayListCanvas: DisplayListCanvas is started on unbinded RenderNode (without mOwningView) 10-10 15:51:39.668 16856-16856/zhangphil.app I/Timeline: Timeline: Activity_idle id: android.os.BinderProxy@87b6b1c time:249284264 10-10 15:51:41.568 16856-17358/zhangphil.app E/zhangphiljob: error while executing job zhangphil.app.MyJob@9eb605a java.lang.Exception at zhangphil.app.MyJob.onRun(MyJob.java:38) at com.birbit.android.jobqueue.Job.safeRun(Job.java:229) at com.birbit.android.jobqueue.JobHolder.safeRun(JobHolder.java:132) at com.birbit.android.jobqueue.ConsumerManager$Consumer.handleRunJob(ConsumerManager.java:398) at com.birbit.android.jobqueue.ConsumerManager$Consumer.access$000(ConsumerManager.java:317) at com.birbit.android.jobqueue.ConsumerManager$Consumer$2.handleMessage(ConsumerManager.java:345) at com.birbit.android.jobqueue.messaging.SafeMessageQueue.consume(SafeMessageQueue.java:36) at com.birbit.android.jobqueue.ConsumerManager$Consumer.run(ConsumerManager.java:380) at java.lang.Thread.run(Thread.java:818) 10-10 15:51:41.568 16856-17358/zhangphil.app D/任務1: runCount: 1 maxRunCount: 20 10-10 15:51:41.568 16856-17358/zhangphil.app D/zhangphiljob: safeRunResult for zhangphil.app.MyJob@9eb605a : false. re run:true. cancelled: false 10-10 15:51:41.578 16856-17358/zhangphil.app D/zhangphiljob: [queue_RUN_JOB_RESULT_6] post message com.birbit.android.jobqueue.messaging.message.RunJobResultMessage@2fa28b 10-10 15:51:41.578 16856-17358/zhangphil.app D/zhangphiljob: flushing messages at time 1476085901581361354 10-10 15:51:41.578 16856-17358/zhangphil.app D/zhangphiljob: [consumer_3] remove message null 10-10 15:51:41.578 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] looking for next message at time 1476085901581436927 10-10 15:51:41.578 16856-17358/zhangphil.app D/zhangphiljob: consumer manager on idle 10-10 15:51:41.578 16856-17353/zhangphil.app D/zhangphiljob: flushing messages at time 1476085901581436927 10-10 15:51:41.578 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] next delayed job null 10-10 15:51:41.578 16856-17353/zhangphil.app D/zhangphiljob: [queue_RUN_JOB_RESULT_6] remove message com.birbit.android.jobqueue.messaging.message.RunJobResultMessage@2fa28b 10-10 15:51:41.578 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] consuming message of type RUN_JOB_RESULT 10-10 15:51:41.578 16856-17358/zhangphil.app D/zhangphiljob: [queue_JOB_CONSUMER_IDLE_4] post message com.birbit.android.jobqueue.messaging.message.JobConsumerIdleMessage@a013fe4 10-10 15:51:41.578 16856-17358/zhangphil.app D/zhangphiljob: [consumer_3] will wait on the lock forever 10-10 15:51:41.598 16856-17353/zhangphil.app D/zhangphiljob: reinsert job result true 10-10 15:51:41.598 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] looking for next message at time 1476085901603381718 10-10 15:51:41.598 16856-17353/zhangphil.app D/zhangphiljob: flushing messages at time 1476085901603381718 10-10 15:51:41.598 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] next delayed job null 10-10 15:51:41.598 16856-17353/zhangphil.app D/zhangphiljob: [queue_RUN_JOB_RESULT_6] remove message null 10-10 15:51:41.598 16856-17353/zhangphil.app D/zhangphiljob: [queue_CONSTRAINT_CHANGE_5] remove message null 10-10 15:51:41.598 16856-17353/zhangphil.app D/zhangphiljob: [queue_ADD_JOB_2] remove message null 10-10 15:51:41.598 16856-17353/zhangphil.app D/zhangphiljob: [queue_JOB_CONSUMER_IDLE_4] remove message com.birbit.android.jobqueue.messaging.message.JobConsumerIdleMessage@a013fe4 10-10 15:51:41.598 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] consuming message of type JOB_CONSUMER_IDLE 10-10 15:51:41.608 16856-17353/zhangphil.app D/zhangphiljob: [consumer_3] post message com.birbit.android.jobqueue.messaging.message.RunJobMessage@725c413 10-10 15:51:41.608 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] looking for next message at time 1476085901615635572 10-10 15:51:41.608 16856-17353/zhangphil.app D/zhangphiljob: flushing messages at time 1476085901615635572 10-10 15:51:41.608 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] next delayed job null 10-10 15:51:41.608 16856-17353/zhangphil.app D/zhangphiljob: [queue_RUN_JOB_RESULT_6] remove message null 10-10 15:51:41.608 16856-17353/zhangphil.app D/zhangphiljob: [queue_CONSTRAINT_CHANGE_5] remove message null 10-10 15:51:41.608 16856-17353/zhangphil.app D/zhangphiljob: [queue_ADD_JOB_2] remove message null 10-10 15:51:41.608 16856-17358/zhangphil.app D/zhangphiljob: flushing messages at time 1476085901615705104 10-10 15:51:41.608 16856-17353/zhangphil.app D/zhangphiljob: [queue_JOB_CONSUMER_IDLE_4] remove message null 10-10 15:51:41.608 16856-17353/zhangphil.app D/zhangphiljob: joq idle. running:? true 10-10 15:51:41.608 16856-17358/zhangphil.app D/zhangphiljob: [consumer_3] remove message com.birbit.android.jobqueue.messaging.message.RunJobMessage@725c413 10-10 15:51:41.608 16856-17358/zhangphil.app D/zhangphiljob: running job JobHolder 10-10 15:51:41.608 16856-17358/zhangphil.app D/zhangphiljob: running job MyJob 10-10 15:51:41.608 16856-17358/zhangphil.app D/任務1: 開始運行... 10-10 15:51:41.608 16856-17353/zhangphil.app D/zhangphiljob: Job queue idle. next job at: null 10-10 15:51:41.618 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] did on idle post a message? false 10-10 15:51:43.608 16856-17358/zhangphil.app E/zhangphiljob: error while executing job zhangphil.app.MyJob@1ef2826 java.lang.Exception at zhangphil.app.MyJob.onRun(MyJob.java:38) at com.birbit.android.jobqueue.Job.safeRun(Job.java:229) at com.birbit.android.jobqueue.JobHolder.safeRun(JobHolder.java:132) at com.birbit.android.jobqueue.ConsumerManager$Consumer.handleRunJob(ConsumerManager.java:398) at com.birbit.android.jobqueue.ConsumerManager$Consumer.access$000(ConsumerManager.java:317) at com.birbit.android.jobqueue.ConsumerManager$Consumer$2.handleMessage(ConsumerManager.java:345) at com.birbit.android.jobqueue.messaging.SafeMessageQueue.consume(SafeMessageQueue.java:36) at com.birbit.android.jobqueue.ConsumerManager$Consumer.run(ConsumerManager.java:380) at java.lang.Thread.run(Thread.java:818) 10-10 15:51:43.608 16856-17358/zhangphil.app D/任務1: runCount: 2 maxRunCount: 20 10-10 15:51:43.608 16856-17358/zhangphil.app D/zhangphiljob: safeRunResult for zhangphil.app.MyJob@1ef2826 : false. re run:true. cancelled: false 10-10 15:51:43.608 16856-17358/zhangphil.app D/zhangphiljob: [queue_RUN_JOB_RESULT_6] post message com.birbit.android.jobqueue.messaging.message.RunJobResultMessage@2fa28b 10-10 15:51:43.608 16856-17358/zhangphil.app D/zhangphiljob: flushing messages at time 1476085903619928280 10-10 15:51:43.608 16856-17358/zhangphil.app D/zhangphiljob: [consumer_3] remove message null 10-10 15:51:43.608 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] looking for next message at time 1476085903620000572 10-10 15:51:43.608 16856-17358/zhangphil.app D/zhangphiljob: consumer manager on idle 10-10 15:51:43.608 16856-17353/zhangphil.app D/zhangphiljob: flushing messages at time 1476085903620000572 10-10 15:51:43.608 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] next delayed job null 10-10 15:51:43.608 16856-17353/zhangphil.app D/zhangphiljob: [queue_RUN_JOB_RESULT_6] remove message com.birbit.android.jobqueue.messaging.message.RunJobResultMessage@2fa28b 10-10 15:51:43.618 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] consuming message of type RUN_JOB_RESULT 10-10 15:51:43.618 16856-17358/zhangphil.app D/zhangphiljob: [queue_JOB_CONSUMER_IDLE_4] post message com.birbit.android.jobqueue.messaging.message.JobConsumerIdleMessage@a013fe4 10-10 15:51:43.618 16856-17358/zhangphil.app D/zhangphiljob: [consumer_3] will wait on the lock forever 10-10 15:51:43.628 16856-17353/zhangphil.app D/zhangphiljob: reinsert job result true 10-10 15:51:43.628 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] looking for next message at time 1476085903636682603 10-10 15:51:43.628 16856-17353/zhangphil.app D/zhangphiljob: flushing messages at time 1476085903636682603 10-10 15:51:43.628 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] next delayed job null 10-10 15:51:43.628 16856-17353/zhangphil.app D/zhangphiljob: [queue_RUN_JOB_RESULT_6] remove message null 10-10 15:51:43.628 16856-17353/zhangphil.app D/zhangphiljob: [queue_CONSTRAINT_CHANGE_5] remove message null 10-10 15:51:43.628 16856-17353/zhangphil.app D/zhangphiljob: [queue_ADD_JOB_2] remove message null 10-10 15:51:43.628 16856-17353/zhangphil.app D/zhangphiljob: [queue_JOB_CONSUMER_IDLE_4] remove message com.birbit.android.jobqueue.messaging.message.JobConsumerIdleMessage@a013fe4 10-10 15:51:43.628 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] consuming message of type JOB_CONSUMER_IDLE 10-10 15:51:43.638 16856-17353/zhangphil.app D/zhangphiljob: [consumer_3] post message com.birbit.android.jobqueue.messaging.message.RunJobMessage@725c413 10-10 15:51:43.638 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] looking for next message at time 1476085903643573436 10-10 15:51:43.638 16856-17353/zhangphil.app D/zhangphiljob: flushing messages at time 1476085903643573436 10-10 15:51:43.638 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] next delayed job null 10-10 15:51:43.638 16856-17353/zhangphil.app D/zhangphiljob: [queue_RUN_JOB_RESULT_6] remove message null 10-10 15:51:43.638 16856-17353/zhangphil.app D/zhangphiljob: [queue_CONSTRAINT_CHANGE_5] remove message null 10-10 15:51:43.638 16856-17358/zhangphil.app D/zhangphiljob: flushing messages at time 1476085903643628228 10-10 15:51:43.638 16856-17353/zhangphil.app D/zhangphiljob: [queue_ADD_JOB_2] remove message null 10-10 15:51:43.638 16856-17353/zhangphil.app D/zhangphiljob: [queue_JOB_CONSUMER_IDLE_4] remove message null 10-10 15:51:43.638 16856-17353/zhangphil.app D/zhangphiljob: joq idle. running:? true 10-10 15:51:43.638 16856-17358/zhangphil.app D/zhangphiljob: [consumer_3] remove message com.birbit.android.jobqueue.messaging.message.RunJobMessage@725c413 10-10 15:51:43.638 16856-17358/zhangphil.app D/zhangphiljob: running job JobHolder 10-10 15:51:43.638 16856-17358/zhangphil.app D/zhangphiljob: running job MyJob 10-10 15:51:43.638 16856-17358/zhangphil.app D/任務1: 開始運行... 10-10 15:51:43.638 16856-17353/zhangphil.app D/zhangphiljob: Job queue idle. next job at: null 10-10 15:51:43.638 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] did on idle post a message? false 10-10 15:51:45.638 16856-17358/zhangphil.app E/zhangphiljob: error while executing job zhangphil.app.MyJob@12572bd java.lang.Exception at zhangphil.app.MyJob.onRun(MyJob.java:38) at com.birbit.android.jobqueue.Job.safeRun(Job.java:229) at com.birbit.android.jobqueue.JobHolder.safeRun(JobHolder.java:132) at com.birbit.android.jobqueue.ConsumerManager$Consumer.handleRunJob(ConsumerManager.java:398) at com.birbit.android.jobqueue.ConsumerManager$Consumer.access$000(ConsumerManager.java:317) at com.birbit.android.jobqueue.ConsumerManager$Consumer$2.handleMessage(ConsumerManager.java:345) at com.birbit.android.jobqueue.messaging.SafeMessageQueue.consume(SafeMessageQueue.java:36) at com.birbit.android.jobqueue.ConsumerManager$Consumer.run(ConsumerManager.java:380) at java.lang.Thread.run(Thread.java:818) 10-10 15:51:45.638 16856-17358/zhangphil.app D/任務1: runCount: 3 maxRunCount: 20 10-10 15:51:45.638 16856-17358/zhangphil.app D/zhangphiljob: safeRunResult for zhangphil.app.MyJob@12572bd : false. re run:false. cancelled: false 10-10 15:51:45.638 16856-17358/zhangphil.app D/zhangphiljob: [queue_RUN_JOB_RESULT_6] post message com.birbit.android.jobqueue.messaging.message.RunJobResultMessage@2fa28b 10-10 15:51:45.638 16856-17358/zhangphil.app D/zhangphiljob: flushing messages at time 1476085905647085571 10-10 15:51:45.638 16856-17358/zhangphil.app D/zhangphiljob: [consumer_3] remove message null 10-10 15:51:45.638 16856-17358/zhangphil.app D/zhangphiljob: consumer manager on idle 10-10 15:51:45.638 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] looking for next message at time 1476085905647246300 10-10 15:51:45.638 16856-17353/zhangphil.app D/zhangphiljob: flushing messages at time 1476085905647246300 10-10 15:51:45.638 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] next delayed job null 10-10 15:51:45.638 16856-17353/zhangphil.app D/zhangphiljob: [queue_RUN_JOB_RESULT_6] remove message com.birbit.android.jobqueue.messaging.message.RunJobResultMessage@2fa28b 10-10 15:51:45.638 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] consuming message of type RUN_JOB_RESULT 10-10 15:51:45.638 16856-17353/zhangphil.app D/任務1: cancelReason:5 10-10 15:51:45.638 16856-17358/zhangphil.app D/zhangphiljob: [queue_JOB_CONSUMER_IDLE_4] post message com.birbit.android.jobqueue.messaging.message.JobConsumerIdleMessage@a013fe4 10-10 15:51:45.638 16856-17358/zhangphil.app D/zhangphiljob: [consumer_3] will wait on the lock forever 10-10 15:51:45.658 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] looking for next message at time 1476085905666501300 10-10 15:51:45.658 16856-17353/zhangphil.app D/zhangphiljob: flushing messages at time 1476085905666501300 10-10 15:51:45.658 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] next delayed job null 10-10 15:51:45.658 16856-17353/zhangphil.app D/zhangphiljob: [queue_RUN_JOB_RESULT_6] remove message null 10-10 15:51:45.658 16856-17353/zhangphil.app D/zhangphiljob: [queue_CONSTRAINT_CHANGE_5] remove message null 10-10 15:51:45.658 16856-17353/zhangphil.app D/zhangphiljob: [queue_ADD_JOB_2] remove message null 10-10 15:51:45.658 16856-17353/zhangphil.app D/zhangphiljob: [queue_JOB_CONSUMER_IDLE_4] remove message com.birbit.android.jobqueue.messaging.message.JobConsumerIdleMessage@a013fe4 10-10 15:51:45.658 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] consuming message of type JOB_CONSUMER_IDLE 10-10 15:51:45.668 16856-17353/zhangphil.app D/zhangphiljob: keep alive: 1476086025647041248 10-10 15:51:45.668 16856-17353/zhangphil.app D/zhangphiljob: Consumer idle, will kill? false . isRunning: true 10-10 15:51:45.668 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] looking for next message at time 1476085905680193019 10-10 15:51:45.668 16856-17353/zhangphil.app D/zhangphiljob: flushing messages at time 1476085905680193019 10-10 15:51:45.668 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] next delayed job null 10-10 15:51:45.668 16856-17353/zhangphil.app D/zhangphiljob: [queue_RUN_JOB_RESULT_6] remove message null 10-10 15:51:45.678 16856-17353/zhangphil.app D/zhangphiljob: [queue_CONSTRAINT_CHANGE_5] remove message null 10-10 15:51:45.678 16856-17353/zhangphil.app D/zhangphiljob: [queue_ADD_JOB_2] remove message null 10-10 15:51:45.678 16856-17353/zhangphil.app D/zhangphiljob: [queue_JOB_CONSUMER_IDLE_4] remove message null 10-10 15:51:45.678 16856-17353/zhangphil.app D/zhangphiljob: joq idle. running:? true 10-10 15:51:45.678 16856-17353/zhangphil.app D/zhangphiljob: Job queue idle. next job at: null 10-10 15:51:45.678 16856-17353/zhangphil.app D/zhangphiljob: [priority_mq] did on idle post a message? false
上述完整Logcat輸出顯示了代碼在onRun裡面拋出異常然後容錯回滾機制發揮作用重啟了任務,過濾“任務”後精簡的關鍵Logcat輸出:
10-10 15:51:39.488 16856-16856/zhangphil.app D/任務1: 初始化 10-10 15:51:39.528 16856-17353/zhangphil.app D/zhangphiljob: added job class: MyJob priority: 500 delay: 0 group : 任務1 persistent: true 10-10 15:51:39.528 16856-17353/zhangphil.app D/任務1: 添加任務 10-10 15:51:39.568 16856-17358/zhangphil.app D/任務1: 開始運行... 10-10 15:51:41.568 16856-17358/zhangphil.app D/任務1: runCount: 1 maxRunCount: 20 10-10 15:51:41.608 16856-17358/zhangphil.app D/任務1: 開始運行... 10-10 15:51:43.608 16856-17358/zhangphil.app D/任務1: runCount: 2 maxRunCount: 20 10-10 15:51:43.638 16856-17358/zhangphil.app D/任務1: 開始運行... 10-10 15:51:45.638 16856-17358/zhangphil.app D/任務1: runCount: 3 maxRunCount: 20 10-10 15:51:45.638 16856-17353/zhangphil.app D/任務1: cancelReason:5
本例主要實現在APP中解析GML數據並顯示GML,地理標記語言(外語全稱:Geography MarkupLanguage、外語縮寫:GML),它由開放式地理信息系統協會
1、rk3168_v4.2\frameworks\base\data\videos下面的mp4的拷貝方法! a、其實在我們的原始情況下這個目錄的東西並沒有拷貝到xxx/s
前言因為這個RxJava內容不算少,而且應用場景非常廣,所以這個關於RxJava的文章我們會陸續更新,今天就來先來個入門RxJava吧初識RxJava什麼是Rx很多教程在
隨著app的迭代,嵌入的html5界面越來越多了,Webview這個強大組件引起的問題越發的多起來,例如: 1、WebView導致的oom問題 2、Android版本