OK, I have been looking into this some more, and it seems that the reference to my ImageView is null. My code is organised as follows:
Activity onCreate sets an onClick event when the onClick event is activated, setContentView(layout_01) is executed (this is the xml file which contains the ImageView) - as part of this xml file, a class which extends SurfaceView is inflated. onCreate of this SurfaceView creates a thread (which is in inner class) - that thread attempts to use the ImageView via findViewById, which returns null. Am I out-of-scope in attempting to reference the ImageView like this? If so, how should I reference it? Thanks, On May 16, 4:38 pm, steve_macleod <[email protected]> wrote: > Hi, > I am attempting to animate an ImageView using frame-by-frame > animation. I am using the following code: > > ImageView pacImageV = (ImageView) findViewById(R.id.pacAnim); > pacImageV.setBackgroundResource(R.anim.pacanim); > pacManCharAnim = (AnimationDrawable) pacImageV.getBackground(); > > ********************************* > > <?xml version="1.0" encoding="utf-8"?> > <FrameLayout xmlns:android="http://schemas.android.com/apk/res/ > android" > android:layout_width="fill_parent" > android:layout_height="fill_parent"> > > <android.pacman.com.PacManMainView > android:id="@+id/pacman_main_view" > android:layout_width="fill_parent" > android:layout_height="fill_parent"/> > > <RelativeLayout > android:layout_width="fill_parent" > android:layout_height="fill_parent" > > > <TextView > android:id="@+id/gamescreen_txt" > android:text="@string/hello" > android:visibility="visible" > android:layout_width="wrap_content" > android:layout_height="wrap_content" > android:layout_centerInParent="true" > android:gravity="center_horizontal" > android:textColor="#88ffffff" > android:textSize="24sp" > android:paddingTop="400px"/> > </RelativeLayout> > > <ImageView > android:id="@+id/pacAnim" > android:layout_width="20px" > android:layout_height="20px" > android:scaleType="center" > android:src="@drawable/pac01"/> > > </FrameLayout> > > ********************************* > > <animation-list xmlns:android="http://schemas.android.com/apk/res/ > android" > android:oneshot="true"> > <item android:drawable="@drawable/pac01" android:duration="200" / > > <item android:drawable="@drawable/pac02" android:duration="200" / > > </animation-list> > > ********************************* > > Logcat shows a null pointer exception for the > pacImageV.setBackgroundResource(R.anim.pacanim) line. > Perhaps I am following the example incorrectly. I am using the 1.5 > sdk. Can anyone assist with this? --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
