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加載佈局xml失敗

2013-03-17 184 views
0

我認爲我應該展示整個佈局結構，以便您可以弄清楚問題出在哪裏。我是Android編程的新手，我不確定我在做什麼是對的。我有main.xml加載listview。然後我有一個菜單，當按下菜單時，我加載了add.xml以將新列表添加到列表視圖。它如下，工作正常。加載佈局xml失敗

final View addView = getLayoutInflater().inflate(R.layout.add, null); 

    new AlertDialog.Builder(this).setTitle("New Tracker").setView(addView) 
      .setPositiveButton("ADD", new DialogInterface.OnClickListener() { 
       public void onClick(DialogInterface dialog, int whichButton) { 
        addWord((TextView) addView.findViewById(R.id.IDeditText)); 
       } 
      }).setNegativeButton("Cancel", null).show();

add.xml具有一個EditText圖。當用戶點擊EditText時，我想加載另一個名爲description.xml的XML佈局。做到這一點如下 -

private void add() { 
    final View addView = getLayoutInflater().inflate(R.layout.add, null); 

    EditText DescEditTxt = (EditText) addView.findViewById(R.id.descriptionEdit); 
    if(DescEditTxt != null) 
    { 
     DescEditTxt.setOnFocusChangeListener(new View.OnFocusChangeListener() { 
      @Override 
      public void onFocusChange(View v, boolean hasFocus) { 
       final View descriptionView = getLayoutInflater().inflate(R.layout.description, null); 
       setContentView(descriptionView);   

      } 
     }); 
    } 


    new AlertDialog.Builder(this).setTitle("New Tracker").setView(addView) 
      .setPositiveButton("ADD", new DialogInterface.OnClickListener() { 
       public void onClick(DialogInterface dialog, int whichButton) { 
        addWord((TextView) addView.findViewById(R.id.IDeditText)); 
       } 
      }).setNegativeButton("Cancel", null).show(); 
}

當用戶有一個重點的EditText看法，我試圖加載description.xml但該方案在setContentView(descriptionView);

墜毀我的查詢是

  • 這對我所做的事情有意義嗎？有沒有更好的方法呢？

  • 由於程序崩潰導致的問題是什麼？

logcat的

03-17 06:15:24.918: E/InputEventReceiver(2093): Exception dispatching input event. 
03-17 06:15:24.928: E/MessageQueue-JNI(2093): Exception in MessageQueue callback: handleReceiveCallback 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list' 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.app.ListActivity.onContentChanged(ListActivity.java:243) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:292) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:279) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.app.Activity.setContentView(Activity.java:1901) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at sg.SanThit.TrackMe.MainActivity$1.onFocusChange(MainActivity.java:117) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.View.onFocusChanged(View.java:4587) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.widget.TextView.onFocusChanged(TextView.java:7325) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.View.handleFocusGainInternal(View.java:4375) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.View.requestFocusNoSearch(View.java:6660) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.View.requestFocus(View.java:6639) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.View.requestFocus(View.java:6606) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.View.requestFocus(View.java:6585) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.View.onTouchEvent(View.java:8184) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.widget.TextView.onTouchEvent(TextView.java:7377) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.View.dispatchTouchEvent(View.java:7239) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1953) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1405) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.app.Dialog.dispatchTouchEvent(Dialog.java:740) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1901) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.View.dispatchPointerEvent(View.java:7419) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3220) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3165) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4292) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4271) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4363) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:179) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.os.MessageQueue.nativePollOnce(Native Method) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.os.MessageQueue.next(MessageQueue.java:125) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.os.Looper.loop(Looper.java:124) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at android.app.ActivityThread.main(ActivityThread.java:5039) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at java.lang.reflect.Method.invokeNative(Native Method) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at java.lang.reflect.Method.invoke(Method.java:511) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
03-17 06:15:25.048: E/MessageQueue-JNI(2093): at dalvik.system.NativeStart.main(Native Method) 
03-17 06:15:25.048: D/AndroidRuntime(2093): Shutting down VM 
03-17 06:15:25.062: W/dalvikvm(2093): threadid=1: thread exiting with uncaught exception (group=0x40a70930) 
03-17 06:15:25.168: E/AndroidRuntime(2093): FATAL EXCEPTION: main 
03-17 06:15:25.168: E/AndroidRuntime(2093): java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list' 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.app.ListActivity.onContentChanged(ListActivity.java:243) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:292) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:279) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.app.Activity.setContentView(Activity.java:1901) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at sg.SanThit.TrackMe.MainActivity$1.onFocusChange(MainActivity.java:117) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.View.onFocusChanged(View.java:4587) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.widget.TextView.onFocusChanged(TextView.java:7325) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.View.handleFocusGainInternal(View.java:4375) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.View.requestFocusNoSearch(View.java:6660) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.View.requestFocus(View.java:6639) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.View.requestFocus(View.java:6606) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.View.requestFocus(View.java:6585) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.View.onTouchEvent(View.java:8184) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.widget.TextView.onTouchEvent(TextView.java:7377) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.View.dispatchTouchEvent(View.java:7239) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1953) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1405) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.app.Dialog.dispatchTouchEvent(Dialog.java:740) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1901) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.View.dispatchPointerEvent(View.java:7419) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3220) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3165) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4292) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4271) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4363) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:179) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.os.MessageQueue.nativePollOnce(Native Method) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.os.MessageQueue.next(MessageQueue.java:125) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.os.Looper.loop(Looper.java:124) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at android.app.ActivityThread.main(ActivityThread.java:5039) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at java.lang.reflect.Method.invokeNative(Native Method) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at java.lang.reflect.Method.invoke(Method.java:511) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
03-17 06:15:25.168: E/AndroidRuntime(2093):  at dalvik.system.NativeStart.main(Native Method) 
03-17 06:20:25.548: I/Process(2093): Sending signal. PID: 2093 SIG: 9

來源

2013-03-17 Bryanyan

+0

張貼錯誤日誌 – MuraliGanesan 2013-03-17 05:56:42

+0

錯誤日誌中的很多錯誤。如何複製到這裏？ – Bryanyan 2013-03-17 06:24:09

+0

logcat選項卡中有一個保存按鈕。選擇所有行並保存到日誌文件中，然後將其複製並粘貼到OP中的代碼中。您也可以按類型和其他方式過濾logcat。如果你看看它，並找到引用你的項目的第一行，它應該告訴你行號和上面那個，錯誤的來源，如'空指針異常引起的或類似的東西 – codeMagic 2013-03-17 06:28:20

回答

0

（1）這是否有意義與我在做什麼？有沒有這方面的任何更好的方法？

在我看來，你的問題的一部分是你正在充氣，並試圖使用太多Layouts。充氣Views是可以的，但它似乎是你想要使用太多（到目前爲止，我可以看到3）。如果你需要的話，你可以在你的onCreate()中調用setContentView()，然後inflate a View作爲你的清單，這會更加簡單和清潔。如果你希望所有的這是一個Activity和使用API​​ 11或更高，那麼你可能要考慮使用Fragments

它很難想象究竟你有什麼，但如果每個layout沒有很多Views在他們裏面，可能更容易只是把它們放在一個layout並設置visibility到gone直到你需要view然後將其更改爲visible

What could be the problem due to which the program crashed?

編輯

錯誤是因爲你有一個ListActivity，但是你沒有在你的xml中有一個ListView和一個正確的ID。你需要有像

<ListView 
android:id="@android:id/list" 
.../>

如果你只延長Activity並創建自己的listview那麼你不需要這個。但是，如果你擴展ListActivity那麼你需要在你的xml中使用這個ListView。在你的logcat中的以下行是你如何知道這個

java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'

來源

2013-03-17 06:05:55 codeMagic

+0

西蒙幫我把logcat。他們如上所示。 – Bryanyan 2013-03-17 07:23:03

+0

編輯我的答案。這應該可以解決您的問題 – codeMagic 2013-03-17 14:13:02

+0

@Bryanyan是否解決了您的問題？如果是這樣，請接受，以便其他人可以輕鬆找到它。如果沒有，請讓我知道現在的問題，我們可以解決它 – codeMagic 2013-03-18 03:34:42

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