Adding An Image Problem: Build a Simple Android App

Dear all,

I am having trouble adding an image. When I try to run my app, I receive this error message:

06-25 12:36:39.516: E/AndroidRuntime(1115): FATAL EXCEPTION: main 06-25 12:36:39.516: E/AndroidRuntime(1115): Process: com.example.crystalball, PID: 1115 06-25 12:36:39.516: E/AndroidRuntime(1115): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.crystalball/com.example.crystalball.MainActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity. 06-25 12:36:39.516: E/AndroidRuntime(1115): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195) 06-25 12:36:39.516: E/AndroidRuntime(1115): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) 06-25 12:36:39.516: E/AndroidRuntime(1115): at android.app.ActivityThread.access$800(ActivityThread.java:135) 06-25 12:36:39.516: E/AndroidRuntime(1115): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 06-25 12:36:39.516: E/AndroidRuntime(1115): at android.os.Handler.dispatchMessage(Handler.java:102) 06-25 12:36:39.516: E/AndroidRuntime(1115): at android.os.Looper.loop(Looper.java:136) 06-25 12:36:39.516: E/AndroidRuntime(1115): at android.app.ActivityThread.main(ActivityThread.java:5017) 06-25 12:36:39.516: E/AndroidRuntime(1115): at java.lang.reflect.Method.invokeNative(Native Method) 06-25 12:36:39.516: E/AndroidRuntime(1115): at java.lang.reflect.Method.invoke(Method.java:515) 06-25 12:36:39.516: E/AndroidRuntime(1115): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 06-25 12:36:39.516: E/AndroidRuntime(1115): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 06-25 12:36:39.516: E/AndroidRuntime(1115): at dalvik.system.NativeStart.main(Native Method) 06-25 12:36:39.516: E/AndroidRuntime(1115): Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity. 06-25 12:36:39.516: E/AndroidRuntime(1115): at android.support.v7.app.ActionBarActivityDelegate.onCreate(ActionBarActivityDelegate.java:111) 06-25 12:36:39.516: E/AndroidRuntime(1115): at android.support.v7.app.ActionBarActivityDelegateICS.onCreate(ActionBarActivityDelegateICS.java:58) 06-25 12:36:39.516: E/AndroidRuntime(1115): at android.support.v7.app.ActionBarActivity.onCreate(ActionBarActivity.java:98) 06-25 12:36:39.516: E/AndroidRuntime(1115): at com.example.crystalball.MainActivity.onCreate(MainActivity.java:24) 06-25 12:36:39.516: E/AndroidRuntime(1115): at android.app.Activity.performCreate(Activity.java:5231) 06-25 12:36:39.516: E/AndroidRuntime(1115): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 06-25 12:36:39.516: E/AndroidRuntime(1115): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159) 06-25 12:36:39.516: E/AndroidRuntime(1115): ... 11 more

I am very confused. The only place I think that a problem might have occurred is the use of the image. I initially changed the image name from ball01 to CrystalBall_Image, which is not allowed, so I went back and replaced my CrystalBall_Image with ball01.

Thank you very much, and any help is greatly appreciated,

Sam

Update: I noticed on the Adding an Image page the Known Issues under Teacher's Notes. As a result, I replaced my style and activity main with the downloadable versions. However, the app still will not run, and I still receive the same error message as above.