java.lang.NullPointerException Android 4.2

仅在Android 4.2中出现错误java.lang.NullPointerException 应用程序崩溃仅适用于android 4.2，适用于android 4.0 在带有emulator 4.2的Eclipse中，不是logcat中的错误，而是google play developer中的错误是 对不起我的英语，谢谢你的帮助

        java.lang.NullPointerException
at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2565)
at android.view.ViewRootImpl.dispatchDetachedFromWindow(ViewRootImpl.java:2820)
at android.view.ViewRootImpl.doDie(ViewRootImpl.java:5162)
at android.view.ViewRootImpl.die(ViewRootImpl.java:5145)
at android.view.WindowManagerGlobal.removeViewLocked(WindowManagerGlobal.java:359)
at android.view.WindowManagerGlobal.removeView(WindowManagerGlobal.java:309)
at android.view.WindowManagerImpl.removeViewImmediate(WindowManagerImpl.java:84)
at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3535)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3717)
at android.app.ActivityThread.access$700(ActivityThread.java:141)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1262)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)

活动

public class directo extends Activity
{
    private LinearLayout ll;
    private WebView webview2;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        this.requestWindowFeature(Window.FEATURE_NO_TITLE);
        super.onCreate(savedInstanceState);
        setContentView(R.layout.directo);

        ll = (LinearLayout) findViewById(R.id.container1);
        showVideo1();
    }

    @Override
    protected void onPause() {
        super.onPause();    //To change body of overridden methods use File | Settings | File Templates.
        webview2.onPause();
    }

    @Override
    protected void onResume() {
        super.onResume();    //To change body of overridden methods use File | Settings | File Templates.
        webview2.onResume();
    }

    @Override
    protected void onDestroy() {

        webview2.onPause();
        super.onDestroy();

    }
    @Override
    public void onConfigurationChanged(Configuration newConfig) {
         super.onConfigurationChanged(newConfig);
    }

    public void showVideo1(){
        webview2 = new WebView(this);

        webview2.getSettings().setJavaScriptEnabled(true);
        webview2.getSettings().setLoadWithOverviewMode(true);
        webview2.getSettings().setUseWideViewPort(true);
        webview2.setWebViewClient(new mWebViewClient());
        webview2.getSettings().setPluginsEnabled(true);
        webview2.setWebChromeClient( new FullscreenableChromeClient(this));
        webview2.getSettings().setUserAgentString("Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/534.36 (KHTML, like Gecko) Chrome/13.0.766.0 Safari/534.36");


        webview2.setLayoutParams(new LinearLayout.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT,
                1f));



            String js = "<iframe type=\"text/html\" width=\"100%\" height=\"100%\" src=\"http://veetle.com/index.php/mobile/channel/4d09f6339bb0b\" frameborder=\"0\">\n" +
                    "</iframe>\n" +
                    "";
            webview2.loadDataWithBaseURL("fake://fake.com", js,
                    "text/html", "UTF-8", null);


        ll.addView(webview2, new ViewGroup.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
    }

    private class mWebViewClient extends WebViewClient {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return true;
        }

    }

    @Override
    public boolean onKeyUp(int keyCode, KeyEvent msg) {

         if (keyCode == KeyEvent.KEYCODE_BACK) {
             finish();
             return true;
            }
         return false;
    }
    public void recargar(View view) {
        Intent intent = new Intent(this, directo.class);
        //intent.putExtra("someData", "Here is some data");
        startActivityForResult(intent, 1);
    }
    public void volver(View view) {
        Intent intent = new Intent(this, inicio1.class);
        //intent.putExtra("someData", "Here is some data");
        startActivityForResult(intent, 1);
    }
}

---

我想你把错误的顶部删掉了你能给我们更多的信息吗？一个完整的LogCat会很有帮助，就像Krsteev提到的，还有，什么时候会崩溃？当你按下按钮时？什么时候启动应用程序？请提供更多详细信息。尝试移动超级呼叫super.onCreatesavedInstanceState；当我在第一篇文章中按主activityLogcat中的tabhost时，请求窗口功能崩溃

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/container1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:keepScreenOn="true"
    android:orientation="vertical" >

    <Button
        android:id="@+id/btn_set_date"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:onClick="volver"
        android:text="@string/volver" />

    <Button
        android:id="@+id/btn_set_time"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:onClick="recargar"
        android:text="@string/recargar" />

</LinearLayout>

08-15 20:02:27.899: W/ActivityThread(1062): Application com.futbolespanoltv.android is waiting for the debugger on port 8100...
08-15 20:02:27.968: I/System.out(1062): Sending WAIT chunk
08-15 20:02:27.978: I/dalvikvm(1062): Debugger is active
08-15 20:02:28.168: I/System.out(1062): Debugger has connected
08-15 20:02:28.168: I/System.out(1062): waiting for debugger to settle...
08-15 20:02:28.368: I/System.out(1062): waiting for debugger to settle...
08-15 20:02:28.568: I/System.out(1062): waiting for debugger to settle...
08-15 20:02:28.778: I/System.out(1062): waiting for debugger to settle...
08-15 20:02:28.978: I/System.out(1062): waiting for debugger to settle...
08-15 20:02:29.178: I/System.out(1062): waiting for debugger to settle...
08-15 20:02:29.378: I/System.out(1062): waiting for debugger to settle...
08-15 20:02:29.640: I/System.out(1062): debugger has settled (1303)
08-15 20:02:31.428: D/dalvikvm(1062): GC_FOR_ALLOC freed 204K, 12% free 2490K/2816K, paused 130ms, total 142ms
08-15 20:02:31.458: I/dalvikvm-heap(1062): Grow heap (frag case) to 4.588MB for 2141456-byte allocation
08-15 20:02:31.608: D/dalvikvm(1062): GC_FOR_ALLOC freed 2K, 7% free 4579K/4908K, paused 148ms, total 148ms
08-15 20:02:31.708: D/dalvikvm(1062): GC_CONCURRENT freed 9K, 7% free 4581K/4908K, paused 17ms+6ms, total 100ms
08-15 20:02:32.058: D/dalvikvm(1062): GC_FOR_ALLOC freed 11K, 7% free 4584K/4908K, paused 30ms, total 30ms
08-15 20:02:32.118: I/dalvikvm-heap(1062): Grow heap (frag case) to 9.187MB for 4818256-byte allocation
08-15 20:02:32.308: D/dalvikvm(1062): GC_CONCURRENT freed 0K, 4% free 9289K/9616K, paused 95ms+16ms, total 190ms
08-15 20:02:32.308: D/dalvikvm(1062): WAIT_FOR_CONCURRENT_GC blocked 96ms
08-15 20:02:32.838: I/Choreographer(1062): Skipped 39 frames!  The application may be doing too much work on its main thread.
08-15 20:02:33.089: D/gralloc_goldfish(1062): Emulator without GPU emulation detected.
08-15 20:02:39.738: I/Choreographer(1062): Skipped 48 frames!  The application may be doing too much work on its main thread.
08-15 20:02:41.749: I/Choreographer(1062): Skipped 414 frames!  The application may be doing too much work on its main thread.
08-15 20:02:42.149: I/Choreographer(1062): Skipped 66 frames!  The application may be doing too much work on its main thread.
08-15 20:02:42.779: I/Choreographer(1062): Skipped 34 frames!  The application may be doing too much work on its main thread.
08-15 20:02:43.259: I/Choreographer(1062): Skipped 32 frames!  The application may be doing too much work on its main thread.
08-15 20:02:47.868: I/Choreographer(1062): Skipped 35 frames!  The application may be doing too much work on its main thread.
08-15 20:02:54.378: I/Choreographer(1062): Skipped 35 frames!  The application may be doing too much work on its main thread.
08-15 20:02:54.438: D/TilesManager(1062): Starting TG #0, 0x2a509088
08-15 20:02:55.278: I/Choreographer(1062): Skipped 56 frames!  The application may be doing too much work on its main thread.
08-15 20:02:59.739: I/Choreographer(1062): Skipped 42 frames!  The application may be doing too much work on its main thread.
08-15 20:03:01.718: D/dalvikvm(1062): GC_FOR_ALLOC freed 2426K, 24% free 8492K/11040K, paused 103ms, total 128ms
08-15 20:03:02.139: I/Choreographer(1062): Skipped 398 frames!  The application may be doing too much work on its main thread.
08-15 20:03:02.929: I/Choreographer(1062): Skipped 121 frames!  The application may be doing too much work on its main thread.
08-15 20:03:03.569: I/Choreographer(1062): Skipped 53 frames!  The application may be doing too much work on its main thread.
08-15 20:03:04.989: I/Choreographer(1062): Skipped 33 frames!  The application may be doing too much work on its main thread.
08-15 20:03:07.449: E/Web Console(1062): Uncaught Url::appStore app does not exist on platform at http://veetle.com/minified/ff46d3264790eff826475edd292e3fc8_minified.js:194
08-15 20:03:07.768: E/Web Console(1062): Url::appChannel app does not exist on platform at http://veetle.com/minified/ff46d3264790eff826475edd292e3fc8_minified.js:343
08-15 20:03:08.268: D/libEGL(1062): Emulator without GPU support detected. Fallback to software renderer.
08-15 20:03:08.278: D/libEGL(1062): loaded /system/lib/egl/libGLES_android.so
08-15 20:03:08.308: E/Web Console(1062): Unsafe JavaScript attempt to access frame with URL fake://fake.com from frame with URL http://veetle.com/index.php/mobile/channel/5208af0563c2d. Domains, protocols and ports must match.
08-15 20:03:08.308: E/Web Console(1062):  at null:1
08-15 20:03:08.658: I/OMXClient(1062): Using client-side OMX mux.
08-15 20:03:08.718: E/Web Console(1062): Unsafe JavaScript attempt to access frame with URL fake://fake.com from frame with URL http://veetle.com/index.php/mobile/channel/5208af0563c2d. Domains, protocols and ports must match.
08-15 20:03:08.718: E/Web Console(1062):  at null:1