android - RoboSpice:应用程序恢复后无法从缓存加载

Question

只要我停留在同一个 fragment 中，缓存就可以正常工作。但是，一旦我将应用程序切换到后台，然后在 onResume() 上重新加载数据，缓存就不再有效，并且建立了网络连接。

这是我的代码:

protected void loadData(final OnDataLoadListener onDataLoadListener) {
       final ReverseStringRequestListener listener = new ReverseStringRequestListener(onDataLoadListener);
       final String cacheKey = "cacheKey234234";
       final ConfigFeedRequest request = new ConfigFeedRequest("http://app.tty-eli.com/index.php?id=3");
       getSpiceManager().getFromCacheAndLoadFromNetworkIfExpired(request, cacheKey, DurationInMillis.ONE_SECOND * 50, listener);
}

知道为什么会发生这种情况吗？我正在这样的 fragment 的类头中创建 SpiceManager:

private SpiceManager spiceManager = new SpiceManager(InMemorySpiceService.class);

这是日志:

10-07 16:07:06.595    5618-5618/at.tty_eli.app D//SpiceManager.java:212﹕ 16:07:06.606 main SpiceManager started.
10-07 16:07:06.605    5618-5618/at.tty_eli.app V/AppointmentFragment_﹕ onResume
10-07 16:07:06.605    5618-5618/at.tty_eli.app D//SpiceManager.java:489﹕ 16:07:06.619 main adding request to request queue
10-07 16:07:06.605    5618-5618/at.tty_eli.app D/AbsListView﹕ onVisibilityChanged() is called, visibility : 0
10-07 16:07:06.605    5618-5618/at.tty_eli.app D/AbsListView﹕ unregisterIRListener() is called
10-07 16:07:06.615    5618-6034/at.tty_eli.app V//SpiceManager.java:1191﹕ 16:07:06.623 SpiceManagerThread 2 Binding to service.
10-07 16:07:06.625    5618-5618/at.tty_eli.app D//SpiceService.java:134﹕ 16:07:06.631 main SpiceService instance created.
10-07 16:07:06.625    5618-5618/at.tty_eli.app D/AbsListView﹕ unregisterIRListener() is called
10-07 16:07:06.625    5618-6034/at.tty_eli.app V//SpiceManager.java:1197﹕ 16:07:06.633 SpiceManagerThread 2 Binding to service succeeded.
10-07 16:07:06.625    5618-6034/at.tty_eli.app D//SpiceManager.java:1245﹕ 16:07:06.637 SpiceManagerThread 2 Waiting for service to be bound.
10-07 16:07:06.645    5618-5618/at.tty_eli.app V//SpiceService.java:506﹕ 16:07:06.656 main Pending requests : 0
10-07 16:07:06.645    5618-5618/at.tty_eli.app V//SpiceService.java:508﹕ 16:07:06.658 main Stop foreground
10-07 16:07:06.655    5618-5618/at.tty_eli.app D//SpiceServiceListenerNotifier.java:33﹕ 16:07:06.662 main Message Queue starting
10-07 16:07:06.655    5618-5618/at.tty_eli.app D//SpiceManager.java:1088﹕ 16:07:06.664 main Bound to service : InMemorySpiceService
10-07 16:07:06.665    5618-6034/at.tty_eli.app D//SpiceManager.java:1252﹕ 16:07:06.673 SpiceManagerThread 2 Bound ok.
10-07 16:07:06.665    5618-6034/at.tty_eli.app D//SpiceManager.java:286﹕ 16:07:06.678 SpiceManagerThread 2 Sending request to service : CachedSpiceRequest
10-07 16:07:06.675    5618-6034/at.tty_eli.app D//RequestProcessor.java:63﹕ 16:07:06.683 SpiceManagerThread 2 Adding request to queue 1121951496: CachedSpiceRequest [requestCacheKey=cacheKey234234, cacheDuration=50000, spiceRequest=at.tty_eli.app.network.ConfigFeedRequest@42c24c50] size is 0
10-07 16:07:06.675    5618-6034/at.tty_eli.app D//RequestProcessor.java:85﹕ 16:07:06.689 SpiceManagerThread 2 Adding entry for type class at.tty_eli.app.network.ConfigFeedResponse and cacheKey cacheKey234234.
10-07 16:07:06.685    5618-6034/at.tty_eli.app D//RequestProgressManager.java:61﹕ 16:07:06.692 SpiceManagerThread 2 Request was added to queue.
10-07 16:07:06.685    5618-6034/at.tty_eli.app D//SpiceServiceListenerNotifier.java:146﹕ 16:07:06.695 SpiceManagerThread 2 Message queue is Handler (android.os.Handler) {42dfa580}
10-07 16:07:06.685    5618-5618/at.tty_eli.app D//SpiceServiceListenerNotifier.java:175﹕ 16:07:06.698 main Processing request added: CachedSpiceRequest [requestCacheKey=cacheKey234234, cacheDuration=50000, spiceRequest=at.tty_eli.app.network.ConfigFeedRequest@42c24c50]
10-07 16:07:06.695    5618-6034/at.tty_eli.app D//RequestProgressManager.java:82﹕ 16:07:06.703 SpiceManagerThread 2 Sending progress PENDING
10-07 16:07:06.695    5618-6034/at.tty_eli.app D//SpiceServiceListenerNotifier.java:146﹕ 16:07:06.708 SpiceManagerThread 2 Message queue is Handler (android.os.Handler) {42dfa580}
10-07 16:07:06.705    5618-5618/at.tty_eli.app V//DefaultRequestListenerNotifier.java:131﹕ 16:07:06.710 main Notifying 1 listeners of progress com.octo.android.robospice.request.listener.RequestProgress@42c24c88
10-07 16:07:06.705    5618-6038/at.tty_eli.app D//DefaultRequestRunner.java:83﹕ 16:07:06.714 Thread-6031 Processing request : CachedSpiceRequest [requestCacheKey=cacheKey234234, cacheDuration=50000, spiceRequest=at.tty_eli.app.network.ConfigFeedRequest@42c24c50]
10-07 16:07:06.705    5618-6034/at.tty_eli.app V//SpiceService.java:506﹕ 16:07:06.713 SpiceManagerThread 2 Pending requests : 1
10-07 16:07:06.705    5618-6038/at.tty_eli.app D//DefaultRequestRunner.java:97﹕ 16:07:06.718 Thread-6031 Loading request from cache : CachedSpiceRequest [requestCacheKey=cacheKey234234, cacheDuration=50000, spiceRequest=at.tty_eli.app.network.ConfigFeedRequest@42c24c50]
10-07 16:07:06.715    5618-6038/at.tty_eli.app D//RequestProgressManager.java:82﹕ 16:07:06.720 Thread-6031 Sending progress READING_FROM_CACHE
10-07 16:07:06.715    5618-6038/at.tty_eli.app D//SpiceServiceListenerNotifier.java:146﹕ 16:07:06.727 Thread-6031 Message queue is Handler (android.os.Handler) {42dfa580}
10-07 16:07:06.715    5618-5618/at.tty_eli.app V//DefaultRequestListenerNotifier.java:131﹕ 16:07:06.729 main Notifying 1 listeners of progress com.octo.android.robospice.request.listener.RequestProgress@42b0d130
10-07 16:07:06.725    5618-6034/at.tty_eli.app V//SpiceService.java:508﹕ 16:07:06.716 SpiceManagerThread 2 Stop foreground
10-07 16:07:06.725    5618-6038/at.tty_eli.app D//LruCacheObjectPersister.java:47﹕ 16:07:06.732 Thread-6031 Miss from lru cache for cacheKey234234
10-07 16:07:06.725    5618-6038/at.tty_eli.app D//LruCacheObjectPersister.java:47﹕ 16:07:06.737 Thread-6031 Miss from lru cache for cacheKey234234
10-07 16:07:06.735    5618-6038/at.tty_eli.app D//DefaultRequestRunner.java:129﹕ 16:07:06.741 Thread-6031 Cache content not available or expired or disabled
10-07 16:07:06.745    5618-6038/at.tty_eli.app D//DefaultRequestRunner.java:148﹕ 16:07:06.751 Thread-6031 Calling netwok request.
10-07 16:07:06.745    5618-6038/at.tty_eli.app D//RequestProgressManager.java:82﹕ 16:07:06.755 Thread-6031 Sending progress LOADING_FROM_NETWORK
10-07 16:07:06.755    5618-6038/at.tty_eli.app D//SpiceServiceListenerNotifier.java:146﹕ 16:07:06.760 Thread-6031 Message queue is Handler (android.os.Handler) {42dfa580}
10-07 16:07:06.755    5618-5618/at.tty_eli.app V//DefaultRequestListenerNotifier.java:131﹕ 16:07:06.763 main Notifying 1 listeners of progress com.octo.android.robospice.request.listener.RequestProgress@42c11c38
10-07 16:07:10.435    5618-6038/at.tty_eli.app D//DefaultRequestRunner.java:151﹕ 16:07:10.442 Thread-6031 Network request call ended.
10-07 16:07:10.435    5618-6038/at.tty_eli.app D//DefaultRequestRunner.java:171﹕ 16:07:10.447 Thread-6031 Start caching content...
10-07 16:07:10.445    5618-6038/at.tty_eli.app D//RequestProgressManager.java:82﹕ 16:07:10.453 Thread-6031 Sending progress WRITING_TO_CACHE
10-07 16:07:10.455    5618-6038/at.tty_eli.app D//SpiceServiceListenerNotifier.java:146﹕ 16:07:10.459 Thread-6031 Message queue is Handler (android.os.Handler) {42dfa580}
10-07 16:07:10.455    5618-5618/at.tty_eli.app V//DefaultRequestListenerNotifier.java:131﹕ 16:07:10.462 main Notifying 1 listeners of progress com.octo.android.robospice.request.listener.RequestProgress@42a3aa28
10-07 16:07:10.455    5618-6038/at.tty_eli.app D//LruCacheObjectPersister.java:74﹕ 16:07:10.467 Thread-6031 Put in lru cache for cacheKey234234
10-07 16:07:10.465    5618-6038/at.tty_eli.app D//RequestProgressManager.java:82﹕ 16:07:10.473 Thread-6031 Sending progress COMPLETE
10-07 16:07:10.475    5618-6038/at.tty_eli.app D//SpiceServiceListenerNotifier.java:146﹕ 16:07:10.480 Thread-6031 Message queue is Handler (android.os.Handler) {42dfa580}
10-07 16:07:10.475    5618-5618/at.tty_eli.app V//DefaultRequestListenerNotifier.java:131﹕ 16:07:10.483 main Notifying 1 listeners of progress com.octo.android.robospice.request.listener.RequestProgress@42a977a0
10-07 16:07:10.475    5618-6038/at.tty_eli.app D//SpiceServiceListenerNotifier.java:146﹕ 16:07:10.488 Thread-6031 Message queue is Handler (android.os.Handler) {42dfa580}
10-07 16:07:10.485    5618-5618/at.tty_eli.app V//DefaultRequestListenerNotifier.java:166﹕ 16:07:10.491 main Notifying 1 listeners of request success
10-07 16:07:10.485    5618-5618/at.tty_eli.app V//DefaultRequestListenerNotifier.java:172﹕ 16:07:10.494 main Notifying ReverseStringRequestListener
10-07 16:07:10.485    5618-5618/at.tty_eli.app V/AppointmentFragment_﹕ onDataReady
10-07 16:07:10.495    5618-6038/at.tty_eli.app V//RequestProgressManager.java:161﹕ 16:07:10.503 Thread-6031 Removing CachedSpiceRequest [requestCacheKey=cacheKey234234, cacheDuration=50000, spiceRequest=at.tty_eli.app.network.ConfigFeedRequest@42c24c50]  size is 1
10-07 16:07:10.505    5618-6038/at.tty_eli.app D//RequestProgressManager.java:91﹕ 16:07:10.508 Thread-6031 Sending all request complete.
10-07 16:07:10.515    5618-6038/at.tty_eli.app V//SpiceService.java:495﹕ 16:07:10.520 Thread-6031 Pending requests : 0
10-07 16:07:10.515    5618-6038/at.tty_eli.app D//SpiceServiceListenerNotifier.java:146﹕ 16:07:10.524 Thread-6031 Message queue is Handler (android.os.Handler) {42dfa580}
10-07 16:07:10.545    5618-5618/at.tty_eli.app D/AbsListView﹕ unregisterIRListener() is called
10-07 16:07:10.565    5618-6038/at.tty_eli.app D//DefaultRequestRunner.java:295﹕ 16:07:10.569 Thread-6031 It tooks 3828 ms to process request CachedSpiceRequest [requestCacheKey=cacheKey234234, cacheDuration=50000, spiceRequest=at.tty_eli.app.network.ConfigFeedRequest@42c24c50].

终端

Answer 1

发生这种情况的原因是，一旦没有 Activity 绑定(bind)到该服务，该服务就会停止。为了避免丢失所有缓存数据，请将其写入磁盘或数据库。