2

我正在使用SwipeRefreshLayout并且WebView在我的应用程序中没有问题。

代码内部ViewPager：

@Override
public Object instantiateItem(View collection, int position) {

    currentArticle = newsList.get(position);

    View webViewContainer =  getActivity().getLayoutInflater().inflate(R.layout.view_pager_item, null);

    WebView webview = (WebView) webViewContainer.findViewById(R.id.webview);
    SetSettingForWebView(webview);
    webview.loadUrl(currentArticle.getArticleURL());
    SwipeRefreshLayout swipe = (SwipeRefreshLayout) webViewContainer.findViewById(R.id.swipe_container);
    setSettingForSwipeLayout(swipe);
    ((ViewPager) collection).addView(webViewContainer, 0);

    return webViewContainer;
}

无论我是否定义，都会发生错误SwipeRefreshLayout。

这是错误。如您所见，它与我的代码无关，但我不知道如何解决这个问题

日志：

05-25 21:55:59.804: E/AndroidRuntime(4665): FATAL EXCEPTION: main
05-25 21:55:59.804: E/AndroidRuntime(4665): Process: com.dimrix.test, PID: 4665
05-25 21:55:59.804: E/AndroidRuntime(4665): java.lang.NullPointerException
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.support.v4.widget.SwipeRefreshLayout.startRefresh(SwipeRefreshLayout.java:441)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.support.v4.widget.SwipeRefreshLayout.onTouchEvent(SwipeRefreshLayout.java:399)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.View.dispatchTouchEvent(View.java:7811)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2210)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1945)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2169)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1613)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.app.Activity.dispatchTouchEvent(Activity.java:2539)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.support.v7.app.ActionBarActivityDelegateICS$WindowCallbackWrapper.dispatchTouchEvent(ActionBarActivityDelegateICS.java:268)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2117)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.View.dispatchPointerEvent(View.java:8005)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4300)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4179)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3714)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3764)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3733)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3844)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3741)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3901)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3714)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3764)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3733)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3741)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3714)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5973)
05-25 21:55:59.804: E/AndroidRuntime(4665):     at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.ja
4

4 回答 4

1

第 441 行SwipeRefreshLayout.java是

    mListener.onRefresh();

你提供了一个OnRefreshListener吗？

于 2014-05-25T19:21:35.727 回答
0

这可能是因为您拥有SwipeRefreshLayoutViewPager 内部，即在view_pager_item.xml. 所以当SwipeRefreshLayout查找它的上下文时，它会找到包含 ViewPager 的 Activity 或 Fragment。

尝试将 移动SwipeRefreshLayout到包含 ViewPager 的 Activity 或 Fragment 并查看它是如何进行的。

于 2014-05-28T23:43:46.173 回答
0

转到 project-> Properties -> Java Buildpath并添加支持库 V4并通过确保勾选标记从order 和 Export选项卡中检查库。

于 2014-05-25T19:18:57.717 回答
0

您是否设置了带有监听器的 SwipeRefreshLayout 视图？

例如，如果您的 Fragment/Activity 实现SwipeRefreshLayout.OnRefreshListener，则需要将 SwipeRefreshLayout 实例设置为：

SwipeRefreshLayout layout = (SwipeRefreshLayout)view.findViewById(R.id.swipe);
layout.setOnRefreshListener(this);

这应该可以解决崩溃:)

于 2014-08-22T11:56:28.093 回答