旋轉時崩潰使用ViewFlipper的活動

我最初有兩個ListActivity類。旋轉時崩潰使用ViewFlipper的活動

我正在試驗1個Activity，使用ViewFlipper在兩個列表之間翻轉。

除了一個問題，它似乎工作得很好。如果我旋轉模擬器，我會隨機發生崩潰。它不會每次都發生，我無法弄清楚具體的工作流程來觸發它。這是錯誤：

01-12 16:28:58.292: WARN/dalvikvm(877): threadid=3: thread exiting with uncaught exception (group=0x4001b188) 
01-12 16:28:58.292: ERROR/AndroidRuntime(877): Uncaught handler: thread main exiting due to uncaught exception 
01-12 16:28:58.312: ERROR/AndroidRuntime(877): java.lang.IllegalArgumentException: Receiver not registered: [email protected] 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.app.ActivityThread$PackageInfo.forgetReceiverDispatcher(ActivityThread.java:667) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.app.ApplicationContext.unregisterReceiver(ApplicationContext.java:747) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.content.ContextWrapper.unregisterReceiver(ContextWrapper.java:321) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.widget.ViewFlipper.onDetachedFromWindow(ViewFlipper.java:104) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.view.View.dispatchDetachedFromWindow(View.java:5835) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1076) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1074) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1074) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.view.ViewRoot.dispatchDetachedFromWindow(ViewRoot.java:1570) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.view.ViewRoot.doDie(ViewRoot.java:2556) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.view.ViewRoot.die(ViewRoot.java:2526) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.view.WindowManagerImpl.removeViewImmediate(WindowManagerImpl.java:218) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.view.Window$LocalWindowManager.removeViewImmediate(Window.java:436) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3498) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3599) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.app.ActivityThread.access$2300(ActivityThread.java:119) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1867) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.os.Handler.dispatchMessage(Handler.java:99) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.os.Looper.loop(Looper.java:123) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at android.app.ActivityThread.main(ActivityThread.java:4363) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at java.lang.reflect.Method.invokeNative(Native Method) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at java.lang.reflect.Method.invoke(Method.java:521) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 
01-12 16:28:58.312: ERROR/AndroidRuntime(877):  at dalvik.system.NativeStart.main(Native Method)

有沒有人有什麼想法可能是什麼問題？

這裏是我的活動的基本骨架：

public class ActivityFlipper extends Activity implements OnItemClickListener, OnClickListener { 

    ViewFlipper flipper; 

    // query tokens 
    final int LIST1_MY_QUERY_TOKEN = 42; 
    final int LIST2_MY_QUERY_TOKEN = 43; 

    // vars for list1 screen 
    private List1Adapter mList1Adapter = null; 
    private Cursor mList1Cursor = null; 
    List1QueryHandler mList1QueryHandler; 

    // vars for list2 screen 
    private List2Adapter mList2Adapter = null; 
    private Cursor mList2Cursor = null; 
    List2QueryHandler mList2QueryHandler; 


    // ui controls for list1 screen 
    private ListView mList1; 
    private Button mAdd; 
    private TextView mList1Header; 

    // ui controls for list2 screen 
    private ListView mList2; 
    private TextView mList2Header; 
    private Button mSelector; 

    // ui controls common 
    private ProgressDialog mScannerProgress; 

    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     requestWindowFeature(Window.FEATURE_NO_TITLE); 
     setContentView(R.layout.layout_flipper); 

     // set up flipper screen 

     flipper = (ViewFlipper) findViewById(R.id.flipper); 




     // set up list1 screen 

     mList1 = (ListView)findViewById(R.id.list1_list); 
     mList1.setOnItemClickListener(this); 

     mAdd = (Button)findViewById(R.id.list1_add); 
     mAdd.setOnClickListener(this); 

     mList1Header = (TextView)findViewById(R.id.list1_header); 
     mList1Header.setOnClickListener(new OnClickListener() { 

      public void onClick(View v) { 
       flipper.setInAnimation(inFromRightAnimation()); 
       flipper.setOutAnimation(outToLeftAnimation()); 
       flipper.showNext(); 
      } 
     }); 

     setList1Adapter(); 

     mList1QueryHandler = new List1QueryHandler(this); 

     registerForContextMenu(mList1); 
     registerForContextMenu(mAdd); 




     // set up list2 screen 

     mList2 = (ListView)findViewById(R.id.list2_list); 

     mList2Header = (TextView)findViewById(R.id.list2_header); 
     mList2Header.setOnClickListener(new OnClickListener() { 

      public void onClick(View v) { 
       flipper.setInAnimation(inFromLeftAnimation()); 
       flipper.setOutAnimation(outToRightAnimation()); 
       flipper.showPrevious(); 
      } 
     }); 

     mSelector = (Button)findViewById(R.id.list2_changestore); 
     mSelector.setOnClickListener(this); 

     setList2Adapter(); 

     mList2QueryHandler = new List2pingQueryHandler(this); 

     registerForContextMenu(mList2); 
    } 

    private void setList1Adapter() { 
     mList1Adapter = new List1Adapter(ActivityList1.this, null); 
     mList1.setAdapter(mList1Adapter); 
    } 

    private void setList2Adapter() { 
     mList2Adapter = new List2Adapter(ActivityList1.this, null); 
     mList2.setAdapter(mList2Adapter); 
    } 

    @Override 
    protected void onPause() { 
     // remove broadcast listener 
     unregisterReceiver(onBroadcast); 

     super.onPause(); 
    } 

    @Override 
    protected void onResume() { 
     super.onResume(); 

     // add broadcast listener 
     registerReceiver(onBroadcast, new IntentFilter("listquery")); 

     // get rid of scanner progress if showing 
     if (mScannerProgress != null && mScannerProgress.isShowing()) { 
      mScannerProgress.dismiss(); 
     } 

     // get data to populate lists 
     doList1Query(false); 
     doList2Query(false); 

    } 

    public void onItemClick(AdapterView<?> l, View v, int position, long id) { 
     if (v.getId() == mList1.getId()) { 
      // do stuff 
     } 
     else if (v.getId() == mList2.getId()) { 
      // do stuff 
     } 
    } 

    public void onClick(View v) { 
     if (v.getId() == R.id.list1_add) { 
      // do stuff 
     } 
     else if (v.getId() == R.id.list2_changestore) { 
      // do stuff 
     } 
    } 

    @Override 
    public void onActivityResult(int requestCode, int resultCode, Intent data) { 
     // do stuff 
    } 

    Cursor doList1Query(boolean sync) { 
     // Cancel any pending queries 
     mList1QueryHandler.cancelOperation(LIST1_MY_QUERY_TOKEN); 

     if (sync) { 
      try { 
       return getContentResolver().query(uri, 
             columns, 
             where, 
             null, 
             order); 
      } 
      catch (UnsupportedOperationException ex) { 
      } 
     } 
     else { 
      setProgressBarIndeterminateVisibility(true); 
      mList1QueryHandler.startQuery(LIST1_MY_QUERY_TOKEN, 
             null, 
             uri, 
             columns, 
             where, 
             null, 
             order); 
     } 
     return null; 
    } 

    Cursor doList2Query(boolean sync) { 

     mList2QueryHandler.cancelOperation(LIST2_MY_QUERY_TOKEN); 

     if (sync) { 
      try { 
       return getContentResolver().query(uri, 
             getDisplayColumns(), 
             where, 
             null, 
             order); 
      } 
      catch (UnsupportedOperationException ex) { 
      } 
     } 
     else { 
      setProgressBarIndeterminateVisibility(true); 
      mList2QueryHandler.startQuery(LIST2_MY_QUERY_TOKEN, 
             null, 
             uri, 
             columns, 
             where, 
             null, 
             order); 
     } 
     return null; 
    } 


    private BroadcastReceiver onBroadcast = new BroadcastReceiver() { 
     @Override 
     public void onReceive(Context ctxt, Intent i) { 
      doList1Query(false); 
      doList2Query(false); 
     } 
    }; 




    private Animation inFromRightAnimation() { 
     Animation inFromRight = new TranslateAnimation(
       Animation.RELATIVE_TO_PARENT, +1.0f, Animation.RELATIVE_TO_PARENT, 0.0f, 
       Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f 
       ); 

     inFromRight.setDuration(500); 
     inFromRight.setInterpolator(new AccelerateInterpolator()); 

     return inFromRight; 
    } 

    private Animation outToLeftAnimation() { 
     Animation outtoLeft = new TranslateAnimation(
       Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, -1.0f, 
       Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f 
       ); 

     outtoLeft.setDuration(500); 
     outtoLeft.setInterpolator(new AccelerateInterpolator()); 

     return outtoLeft; 
    } 

    private Animation inFromLeftAnimation() { 
     Animation inFromLeft = new TranslateAnimation(
       Animation.RELATIVE_TO_PARENT, -1.0f, Animation.RELATIVE_TO_PARENT, 0.0f, 
       Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f 
       ); 

     inFromLeft.setDuration(500); 
     inFromLeft.setInterpolator(new AccelerateInterpolator()); 

     return inFromLeft; 
    } 

    private Animation outToRightAnimation() { 
     Animation outtoRight = new TranslateAnimation(
       Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, +1.0f, 
       Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f 
       ); 

     outtoRight.setDuration(500); 
     outtoRight.setInterpolator(new AccelerateInterpolator()); 

     return outtoRight; 
    } 
}

來源

2011-01-12 Andrew

code？它看起來像你第一次應該嘗試添加一個嘗試/抓住周圍的區域正在受到打擊 – wajiw 2011-01-12 22:40:46

我認爲這是在Android的腸子錯誤。我不完全確定我的代碼中有什麼，如果有的話，導致它。我將從我的代碼中剝離一些高級別的作品，並在幾分鐘內發佈。 – Andrew 2011-01-12 22:49:14

事實上，這是Android中的腸子中的錯誤。你可以通過使用「SafeViewFlipper」來解決它：

import android.content.Context; 
import android.util.AttributeSet; 
import android.widget.ViewFlipper; 

public class SafeViewFlipper extends ViewFlipper { 


    public SafeViewFlipper(Context context) { 
     super(context); 
    } 

    public SafeViewFlipper(Context context, AttributeSet attrs) { 
     super(context, attrs); 
    } 

    @Override 
    public void onDetachedFromWindow() { 
     try { 
      super.onDetachedFromWindow(); 
     } 
     catch (IllegalArgumentException e) { 
      // This happens when you're rotating and opening the keyboard that the same time 
      // Possibly other rotation related scenarios as well 
      stopFlipping(); 
     } 
    } 
}

來源

2011-01-13 04:03:25

旋轉時崩潰使用ViewFlipper的活動

回答

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