Web查看碎片Android

Question

我有一個WebView片段。 問題是，應用程序因爲某種原因立即崩潰。

我看了一些教程，並保持崩潰。

我已經讀過這個：webview inside fragment android opening outside of the app in a browser 和其他幾個主題，沒有任何工作。

public static class WebFragment extends Fragment { 
    public static final String ARG_PLANET_NUMBER = "planet_number"; 


    public WebFragment() { 
      // Empty constructor required for fragment subclasses 
    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
    Bundle savedInstanceState) 
    {  
     View rootView = inflater.inflate(R.layout.fragment_web, container, false); 
     int i = getArguments().getInt(ARG_PLANET_NUMBER); 
     String planet = getResources().getStringArray(R.array.planets_array)[i]; 

     WebView webview; 
     webview = (WebView) getActivity().findViewById(R.id.webview); 
     webview.setWebViewClient(new WebViewClient()); 
     webview.getSettings().setJavaScriptEnabled(true); 
     webview.getSettings().setUseWideViewPort(true); 
     webview.setWebChromeClient(new WebChromeClient()); 
     webview.loadUrl("http://www.klh-dev.com/lehava/lehava/system/mlogin.php"); 

     getActivity().setTitle(planet); 

     return rootView; 
    } 
}` 

的logcat：

10-31 09:59:00.127: E/AudioManagerAndroid(24850): BLUETOOTH permission is missing! 
10-31 09:59:00.187: W/chromium(24850): [WARNING:proxy_service.cc(890)] PAC support disabled because there is no system implementation 
10-31 09:59:00.217: D/AndroidRuntime(24850): Shutting down VM 
10-31 09:59:00.217: W/dalvikvm(24850): threadid=1: thread exiting with uncaught exception (group=0x41650ce0) 
10-31 09:59:00.217: E/AndroidRuntime(24850): FATAL EXCEPTION: main 
10-31 09:59:00.217: E/AndroidRuntime(24850): Process: com.example.android.navigationdrawerexample, PID: 24850 
10-31 09:59:00.217: E/AndroidRuntime(24850): java.lang.NullPointerException 
10-31 09:59:00.217: E/AndroidRuntime(24850): at com.example.android.navigationdrawerexample.MainActivity$WebFragment.onCreateView(MainActivity.java:328) 
10-31 09:59:00.217: E/AndroidRuntime(24850): at android.app.Fragment.performCreateView(Fragment.java:1700) 
10-31 09:59:00.217: E/AndroidRuntime(24850): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:890) 
10-31 09:59:00.217: E/AndroidRuntime(24850): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1062) 
10-31 09:59:00.217: E/AndroidRuntime(24850): at android.app.BackStackRecord.run(BackStackRecord.java:684) 
10-31 09:59:00.217: E/AndroidRuntime(24850): at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1447) 
10-31 09:59:00.217: E/AndroidRuntime(24850): at android.app.FragmentManagerImpl$1.run(FragmentManager.java:443) 
10-31 09:59:00.217: E/AndroidRuntime(24850): at android.os.Handler.handleCallback(Handler.java:733) 
10-31 09:59:00.217: E/AndroidRuntime(24850): at android.os.Handler.dispatchMessage(Handler.java:95) 
10-31 09:59:00.217: E/AndroidRuntime(24850): at android.os.Looper.loop(Looper.java:136) 
10-31 09:59:00.217: E/AndroidRuntime(24850): at android.app.ActivityThread.main(ActivityThread.java:5144) 
10-31 09:59:00.217: E/AndroidRuntime(24850): at java.lang.reflect.Method.invokeNative(Native Method) 
10-31 09:59:00.217: E/AndroidRuntime(24850): at java.lang.reflect.Method.invoke(Method.java:515) 
10-31 09:59:00.217: E/AndroidRuntime(24850): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795) 
10-31 09:59:00.217: E/AndroidRuntime(24850): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:611) 
10-31 09:59:00.217: E/AndroidRuntime(24850): at dalvik.system.NativeStart.main(Native Method) 

**對不起我的英語不是最好的。

謝謝 Morha13

Answer 1

應該webview = (WebView) rootView.findViewById(R.id.webview);。

WebView是在你新膨脹的片段中，而不是在活動中，至少還沒有。