NullPointerException異常對包括佈局部按壓的時候

Howzit，NullPointerException異常對包括佈局部按壓的時候

我有一個是被包含在我的佈局，其中包含一個ListView靜態頭。該功能很好，但是無論何時點擊該作業，它都會拋出NullPointerException（我不想要發生任何事情）

不確定爲什麼會發生這種情況。

container.xml中

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:gravity="center" 
    android:orientation="vertical" > 

    <include android:id="@+id/headerItem" 
      android:layout_alignParentTop="true" 
      android:layout_width="fill_parent" 
      android:layout_height="76dip" 
      android:background="@color/standard_background" 
      layout="@layout/List_Item"/> 

    <ListView 
     android:id="@id/android:list" 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent" 
     android:layout_below="@+id/headerItem" 
     android:background="@color/standard_background" /> 
</RelativeLayout>

List_Item.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="60dip" 
    android:orientation="vertical" 
    android:padding="8dp"> 
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="30dip" 
    android:orientation="horizontal"> 

      ...a couple of textviews 
    </LinearLayout> 
      ...a single textview 
    </LinearLayout>

我曾試圖將其設置爲禁用，不可作爲焦點，以及禁用點擊長按。不知道還有什麼要嘗試。

堆棧跟蹤

Exception in MessageQueue callback: handleReceiveCallback 
java.lang.NullPointerException 
     at android.support.v4.widget.DrawerLayout.isContentView(DrawerLayout.java:840) 
     at android.support.v4.widget.DrawerLayout.onInterceptTouchEvent(DrawerLayout.java:866) 
     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1859) 
     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
     at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2068) 
     at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1515) 
     at android.app.Activity.dispatchTouchEvent(Activity.java:2458) 
     at android.support.v7.app.ActionBarActivityDelegateICS$WindowCallbackWrapper.dispatchTouchEvent(ActionBarActivityDelegateICS.java:255) 
     at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2016) 
     at android.view.View.dispatchPointerEvent(View.java:7886) 
     at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:3954) 
     at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3833) 
     at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3399) 
     at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3449) 
     at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3418) 
     at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3525) 
     at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3426) 
     at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3582) 
     at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3399) 
     at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3449) 
     at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3418) 
     at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3426) 
     at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3399) 
     at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5602) 
     at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5582) 
     at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5553) 
     at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5682) 
     at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185) 
     at android.os.MessageQueue.nativePollOnce(Native Method) 
     at android.os.MessageQueue.next(MessageQueue.java:138) 
     at android.os.Looper.loop(Looper.java:123) 
     at android.app.ActivityThread.main(ActivityThread.java:5017) 
     at java.lang.reflect.Method.invokeNative(Native Method) 
     at java.lang.reflect.Method.invoke(Method.java:515) 
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 
     at dalvik.system.NativeStart.main(Native Method) 
shutting down VM 
d=1: thread exiting with uncaught exception (group=0x41889ba8) 
FATAL EXCEPTION: main 
rocess: co.za.fieldservice.tcm, PID: 21008 
ava.lang.NullPointerException 
     at android.support.v4.widget.DrawerLayout.isContentView(DrawerLayout.java:840) 
     at android.support.v4.widget.DrawerLayout.onInterceptTouchEvent(DrawerLayout.java:866) 
     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1859) 
     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
     at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
     at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2068) 
     at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1515) 
     at android.app.Activity.dispatchTouchEvent(Activity.java:2458) 
     at android.support.v7.app.ActionBarActivityDelegateICS$WindowCallbackWrapper.dispatchTouchEvent(ActionBarActivityDelegateICS.java:255) 
     at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2016) 
     at android.view.View.dispatchPointerEvent(View.java:7886) 
     at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:3954) 
     at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3833) 
     at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3399) 
     at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3449) 
     at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3418) 
     at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3525) 
     at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3426) 
     at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3582) 
     at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3399) 
     at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3449) 
     at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3418) 
     at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3426) 
     at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3399) 
     at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5602) 
     at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5582) 
     at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5553) 
     at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5682) 
     at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185) 
     at android.os.MessageQueue.nativePollOnce(Native Method) 
     at android.os.MessageQueue.next(MessageQueue.java:138) 
     at android.os.Looper.loop(Looper.java:123) 
     at android.app.ActivityThread.main(ActivityThread.java:5017) 
     at java.lang.reflect.Method.invokeNative(Native Method) 
     at java.lang.reflect.Method.invoke(Method.java:515) 
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 
     at dalvik.system.NativeStart.main(Native Method)

DrawerLayout.xml

<FrameLayout 
     xmlns:android="http://schemas.android.com/apk/res/android" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent"> 
    <android.support.v4.widget.DrawerLayout 
     android:id="@+id/drawer_layout" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" > 
    <!-- The navigation drawer --> 
    <LinearLayout 
     android:id="@+id/drawer" 
     android:layout_width="240dp" 
     android:layout_height="match_parent" 
     android:orientation="vertical" 
     android:layout_gravity="start" > 

     <ListView android:id="@+id/drawer_list" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:choiceMode="multipleChoice" 
      android:divider="@color/light_gray" 
      android:dividerHeight="0.1dp" 
      android:background="@color/standard_background"/> 

    </LinearLayout> 
    </android.support.v4.widget.DrawerLayout> 
    <!-- The main content view --> 
    <FrameLayout 
     android:id="@+id/content_frame" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:layout_marginLeft="@dimen/drawer_content_padding" 
     /> 
</FrameLayout>

來源

2014-02-19 Johan

你有，你可以與我們分享一個堆棧跟蹤？ – SK9

從'List_Item.xml'中的第二個'LinearLayout'中刪除'xmlns：android =「http://schemas.android.com/apk/res/android」' –

@ SK9 stacktrace added – Johan

問題在於抽屜佈局。

抽屜寬度設置爲match_parent，因此使其覆蓋一些其他視圖並導致在按下任何位置（空白處的任何位置）時發生異常。

當我將寬度更改爲與我的content_frame左邊距的值相同的值時，所有操作都很完美。

來源

2014-02-19 18:17:25 Johan

您在XML分配一個新的ID：

<include android:id="@+id/headerItem" // remove it 
      android:layout_alignParentTop="true" 
      android:layout_width="fill_parent" 
      android:layout_height="76dip" 
      android:background="@color/standard_background" 
      layout="@layout/List_Item"/>

然後就找到ID佈局你的活動就像下面。

layout = (RelativeLayout)view.findViewById(R.id.headerItem);

它應該修復NPE。

來源

2014-02-19 06:47:19

我刪除了它，現在標題不再包含在內了。 – Johan

我在包含的佈局中設置了標識，但同樣的事情發生。 – Johan

match_parent做的伎倆，但然後它失去了抽屜佈局的本質。 :(以上

問題確實是由於利潤率添加到您正在使用您的碎片的框架佈局，這是奇怪，但真實的。

嘗試取出利潤率和您的佈局看起來，

<FrameLayout 
    android:id="@+id/content_frame" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"/>

類似情況here。

我們知道，如果這有助於。:)

來源

2014-04-28 13:58:05

NullPointerException異常對包括佈局部按壓的時候

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