The logat says the NPE is located at 08-03 00:07:57.464:
ERROR/AndroidRuntime(8898): at
com.mobilevideoeditor.moved.EditorView.onClick(EditorView.java:81), which
would be lv.setAdapter(new ArrayAdapter<String>(this,
R.layout.specialeffectsview, specialEffects));
Here is the output:
08-03 00:07:57.454: ERROR/AndroidRuntime(8898): Uncaught handler: thread
main exiting due to uncaught exception
08-03 00:07:57.464: ERROR/AndroidRuntime(8898):
java.lang.NullPointerException
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
com.mobilevideoeditor.moved.EditorView.onClick(EditorView.java:81)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
android.view.View.performClick(View.java:2364)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
android.view.View.onTouchEvent(View.java:4179)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
android.view.View.dispatchTouchEvent(View.java:3709)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:924)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:924)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:924)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:924)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:924)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1695)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1116)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
android.app.Activity.dispatchTouchEvent(Activity.java:2068)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1679)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
android.view.ViewRoot.handleMessage(ViewRoot.java:1724)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
android.os.Handler.dispatchMessage(Handler.java:99)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
android.os.Looper.loop(Looper.java:123)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
android.app.ActivityThread.main(ActivityThread.java:4603)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
java.lang.reflect.Method.invokeNative(Native Method)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
java.lang.reflect.Method.invoke(Method.java:521)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
08-03 00:07:57.464: ERROR/AndroidRuntime(8898): at
dalvik.system.NativeStart.main(Native Method)
On Mon, Aug 2, 2010 at 11:00 PM, Justin Anderson <janderson....@gmail.com>wrote:
> Where exactly does the NullPointerException occur? If you aren't sure you
> can find this by looking for a "caused by" line in the logcat information
> after your app crashes.
>
>
> ----------------------------------------------------------------------
> There are only 10 types of people in the world...
> Those who know binary and those who don't.
> ----------------------------------------------------------------------
>
>
> On Mon, Aug 2, 2010 at 3:56 PM, Victoria <victoriasarabu...@gmail.com>wrote:
>
>> Hi there,
>>
>> I am trying to set up a ViewFlipper that changes a SlidingDrawers
>> content each time a button is pressed. So far every view I set up
>> worked fine, but now I am trying to create a ListView (including
>> single_choice_mode) within a child view of the ViewFlipper, but my
>> attempt only let to a NullPointerException. As I only discovered
>> ViewFlipper today, I am not yet familiar with it and may not have
>> understood it completely...if someone could give me a hand and help me
>> find out what I have done wrong, that would be great.
>>
>> Thank you in advance.
>>
>> Here is what I have done:
>>
>> The code for the onClick event of the ImageButtons:
>>
>> public void onClick(View v){
>> if (v == btnExposure){
>>
>> mFlipper.setDisplayedChild(0);
>>
>> }
>> else if (v == btnProperties){
>> mFlipper.setDisplayedChild(1);
>> }
>>
>> else if (v == btnSpecialEffects){
>> mFlipper.setDisplayedChild(2);
>> String[] specialEffects =
>> getResources().getStringArray(R.array.special_effects_array);
>> lv.setAdapter(new ArrayAdapter<String>(this,
>> R.layout.specialeffectsview, specialEffects));
>> lv.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
>> }
>>
>> }
>> The XML code of the ViewFlipper within my main xml file:
>>
>> <ViewFlipper
>> android:layout_width="wrap_content"
>> android:layout_height="wrap_content"
>> android:id="@+id/flipper"
>> android:layout_toRightOf="@id/button_exposure">
>> <include android:id="@+id/view_exposure" layout="@layout/
>> exposureview" />
>> <include android:id="@+id/view_properties" layout="@layout/
>> propertiesview" />
>> <include android:id="@+id/view_special_effects" layout="@layout/
>> specialeffectsview"/>
>> </ViewFlipper>
>> The string array within my strings.xml:
>>
>> <string-array name="special_effects_array">
>> <item>None</item>
>> <item>Greyscale</item>
>> <item>Sepia</item>
>> <item>Negative</item>
>> <item>Solarize</item>
>> <item>Polarize</item>
>> </string-array>
>>
>> And finally the specialeffectsview.xml (the layout file for the
>> ListView):
>>
>> <?xml version="1.0" encoding="utf-8"?>
>> <LinearLayout android:id="@+id/view_special_effects_list"
>> android:layout_width="fill_parent"
>> android:layout_height="fill_parent"
>> xmlns:android="http://schemas.android.com/apk/res/android";>
>> <ListView android:id="@+id/special_effects_list"
>> android:layout_height="wrap_content"
>> android:layout_width="fill_parent"></ListView>
>> </LinearLayout>
>>
>> --
>> You received this message because you are subscribed to the Google
>> Groups "Android Beginners" group.
>>
>> ATTENTION: Android-Beginners will be permanently disabled on August 9
>> 2010. For more information about this change, please read [
>> http://goo.gl/xkfl] or visit the Group home page.
>>
>> Try asking and tagging your question on Stack Overflow at
>> http://stackoverflow.com/questions/tagged/android
>>
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>
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> For more information about this change, please read [http://goo.gl/xkfl]
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