Question

我想创建一个布局 Analytics ..它有2个标签，分别是 Maket 和 Resturant 其中我试图在不同的选项卡中显示不同的WebView ...标签在没有WebViews的情况下工作正常。

在我的fragment_market.xml

下面

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="#ff8400" >

    <WebView
        android:id="@+id/webViewMarket"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
    />

</RelativeLayout>

以下是我的marketfragment.java

package com.example.mark;

public class MarketFragment extends Fragment { private WebView webView; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_market, container, false); webView = (WebView) getView().findViewById(R.id.webViewMarket); webView.getSettings().setJavaScriptEnabled(true); webView.loadUrl("http://www.google.com"); return rootView; } }

这是LogCat

03-28 02:40:35.707: I/BrowserProcessMain(2677): Initializing chromium process, renderers=0 03-28 02:40:37.027: W/chromium(2677): [WARNING:proxy_service.cc(888)] PAC support disabled because there is no system implementation 03-28 02:40:37.147: E/chromium(2677): [ERROR:gl_surface_egl.cc(153)] No suitable EGL configs found. 03-28 02:40:37.147: E/chromium(2677): [ERROR:gl_surface_egl.cc(620)] GLSurfaceEGL::InitializeOneOff failed. 03-28 02:40:37.147: E/chromium(2677): [ERROR:gl_surface_egl.cc(153)] No suitable EGL configs found. 03-28 02:40:37.157: E/chromium(2677): [ERROR:gl_surface_egl.cc(620)] GLSurfaceEGL::InitializeOneOff failed. 03-28 02:40:37.157: E/chromium(2677): [ERROR:gpu_info_collector.cc(86)] gfx::GLSurface::InitializeOneOff() failed 03-28 02:40:38.407: D/AndroidRuntime(2677): Shutting down VM 03-28 02:40:38.407: W/dalvikvm(2677): threadid=1: thread exiting with uncaught exception (group=0xb4a1bb90) 03-28 02:40:38.617: D/dalvikvm(2677): GC_FOR_ALLOC freed 116K, 23% free 5113K/6568K, paused 129ms, total 142ms 03-28 02:40:38.677: E/AndroidRuntime(2677): FATAL EXCEPTION: main 03-28 02:40:38.677: E/AndroidRuntime(2677): Process: com.example.mark, PID: 2677 03-28 02:40:38.677: E/AndroidRuntime(2677): java.lang.NullPointerException 03-28 02:40:38.677: E/AndroidRuntime(2677): at com.example.mark.MarketFragment.onCreateView(MarketFragment.java:20) 03-28 02:40:38.677: E/AndroidRuntime(2677): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500) 03-28 02:40:38.677: E/AndroidRuntime(2677): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:927) 03-28 02:40:38.677: E/AndroidRuntime(2677): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104) 03-28 02:40:38.677: E/AndroidRuntime(2677): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682) 03-28 02:40:38.677: E/AndroidRuntime(2677): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467) 03-28 02:40:38.677: E/AndroidRuntime(2677): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:472)

Answer 1

更改此

View rootView = inflater.inflate(R.layout.fragment_market, container, false);
webView = (WebView) getView().findViewById(R.id.webViewMarket);

到

View rootView = inflater.inflate(R.layout.fragment_market, container, false);
webView = (WebView) rootView.findViewById(R.id.webViewMarket);

getView()返回null。您需要等到片段附加到活动。

您可以在片段getView()中使用onActivityCreated。

Answer 2

试试这个..

更改此

webView = (WebView) getView().findViewById(R.id.webViewMarket);

到此..

webView = (WebView) rootView.findViewById(R.id.webViewMarket);

WebView in Swipable tabs Fragment

2 个答案: