fragment 请求异步网络数据 数据返回时总是 报空指针

[_deadline]

大概情况是这样Activity中包含 viewpager+3个fragment

@Override
	public View onCreateView(LayoutInflater inflater,
			@Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
		View view = inflater.inflate(R.layout.fragment_case_main, container,
				false);
		listView = (XListView) view.findViewById(R.id.case_listview);
		listView.setPullLoadEnable(true);
		listView.setPullRefreshEnable(false);
		listView.setXListViewListener(this);
		mRefreshLayout = (SwipeRefreshLayout) view
				.findViewById(R.id.case_swiperefreshlayout);
		initListView();
		initSwipeRefreshLayout();
		LogUtil.log("case fragment called oncreateview");
		return view;
	}

	@Override
	public void onResume() {
		if (CaseCenterActivity.currentFragment instanceof CaseBaiduFragment) 
		{
			initLogicData();
		}
		super.onResume();
	}
	
	private void initLogicData() {
		caseList = new ArrayList<CaseItem>();
		CaseHost.getCaseList(this);
	}

然后getcaseList();方法

public void getCaseList(final CaseBaseFragment whichFragment) {
		
		String url = UrlUtils.BASEURL + getCondition();
		LogUtil.log("URL===================" + url);

		client.get(url, new AsyncHttpResponseHandler() {

			@Override
			public void onSuccess(int statusCode, Header[] headers,
					byte[] response) {
				String string = new String(response);
				if(whichFragment instanceof CaseBaiduFragment)
				{
					fragmentList.get(0).onsuccess(statusCode, headers, string);
					LogUtil.log(string);
				}
			}

			@Override
			public void onFailure(int statusCode, Header[] headers,
					byte[] response, Throwable throwable) 
			{
				if (!NetworkUtils.isNetworkAvailable()) {
						showToast(R.string.network_unaiviable);
				}
				currentFragment.onFailure(statusCode, headers, new String(response), throwable);
				
			}
		});

	}

然后在网络返回后会执行
fragmentList.get(0).onsuccess(statusCode, headers, string);

然后在fragment中的onsuccess方法

	@Override
	public void onsuccess(int statusCode, Header[] headers, String response) {
		mRefreshLayout.setRefreshing(false);
		listView.stopLoadMore();
		caseList.addAll(JsonUtil.json2ObList(
				InvalideJson.ValideJson(response), CaseItem.class));
		adapter.notifyDataSetChanged();
	}

每当执行到 mRefreshLayout.setRefreshing(false); 这里时就会报空指针，按理说我是在初始化完成后才开始的网络访问，不应该报空指针啊

[Hare_]

加断点跟踪下mRefreshLayout的赋值,

[_deadline]

哪位大神给点思路

[栀暖莺飞]

onResume() 里面的初始化放到oncreateview里面去

[Rejang]

我也是这个问题，不过是在我疯狂切换fragment时才会出现，解决了楼主