android AsyncTaskLoader sample

SampleEndlessLoader.java

public static class SampleEndlessLoader extends AsyncTaskLoader<List<String>> {

		EventManager evManager;
		int itemCount = 0;
		boolean isLoading = false;

		public SampleEndlessLoader(Context context, EventManager evManager) {
			super(context);
			Log.d(LOG_TAG, "EndlessLvFrag.SampleLoader.SampleLoader:");
			this.evManager = evManager;
		}

		@Override
		public void forceLoad() {
			if (!isLoading) {
				super.forceLoad();
				isLoading = !isLoading;
			}
		}

		@Override
		public List<String> loadInBackground() {
			Log.d(LOG_TAG, "EndlessLvFrag.onCreateLoader(...).new AsyncTaskLoader() {...}.loadInBackground:");
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
			ArrayList<String> result = new ArrayList<String>();
			for (int i = 0; i < 10; i++) {
				result.add("item_" + itemCount++);
			}
			Log.d(LOG_TAG, "EndlessLvFrag.onCreateLoader(...).new AsyncTaskLoader() {...}.loadInBackground: finished");
			isLoading = false;
			return result;
		}

		@Override
		protected void onStartLoading() {
			Log.d(LOG_TAG, "EndlessLvFrag.SampleLoader.onStartLoading:" + isLoading);
			forceLoad();
		}

		@Override
		protected void onForceLoad() {
			super.onForceLoad();
			evManager.fire(new DataLoadingEvent(true));
		}
	}