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Asked: 2026-06-07T02:16:49+00:00

Here this the code that I’m using: progressFrame = (FrameLayout) findViewById(R.id.progressFrame); progressFrame.setBackgroundResource(R.drawable.startprogress); All works

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Here this the code that I’m using:

progressFrame = (FrameLayout) findViewById(R.id.progressFrame);
progressFrame.setBackgroundResource(R.drawable.startprogress);

All works fine on Android 2.3.3, but on Android 4 it crashes when trying to run the ‘setBackgroundResource’ line. Here is the logcat message:

07-06 17:31:28.159: W/dalvikvm(11848): threadid=1: thread exiting with uncaught exception (group=0x40be81f8)
07-06 17:31:28.167: E/AndroidRuntime(11848): FATAL EXCEPTION: main
07-06 17:31:28.167: E/AndroidRuntime(11848): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.bosi.sweetsmell/com.bosi.sweetsmell.activity.RubActivity}: java.lang.NullPointerException
07-06 17:31:28.167: E/AndroidRuntime(11848):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1970)
07-06 17:31:28.167: E/AndroidRuntime(11848):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1995)
07-06 17:31:28.167: E/AndroidRuntime(11848):    at android.app.ActivityThread.access$600(ActivityThread.java:128)
07-06 17:31:28.167: E/AndroidRuntime(11848):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1161)
07-06 17:31:28.167: E/AndroidRuntime(11848):    at android.os.Handler.dispatchMessage(Handler.java:99)
07-06 17:31:28.167: E/AndroidRuntime(11848):    at android.os.Looper.loop(Looper.java:137)
07-06 17:31:28.167: E/AndroidRuntime(11848):    at android.app.ActivityThread.main(ActivityThread.java:4514)
07-06 17:31:28.167: E/AndroidRuntime(11848):    at java.lang.reflect.Method.invokeNative(Native Method)
07-06 17:31:28.167: E/AndroidRuntime(11848):    at java.lang.reflect.Method.invoke(Method.java:511)
07-06 17:31:28.167: E/AndroidRuntime(11848):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
07-06 17:31:28.167: E/AndroidRuntime(11848):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
07-06 17:31:28.167: E/AndroidRuntime(11848):    at dalvik.system.NativeStart.main(Native Method)
07-06 17:31:28.167: E/AndroidRuntime(11848): Caused by: java.lang.NullPointerException
07-06 17:31:28.167: E/AndroidRuntime(11848):    at com.bosi.sweetsmell.activity.RubActivity.onCreate(RubActivity.java:35)
07-06 17:31:28.167: E/AndroidRuntime(11848):    at android.app.Activity.performCreate(Activity.java:4465)
07-06 17:31:28.167: E/AndroidRuntime(11848):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1053)
07-06 17:31:28.167: E/AndroidRuntime(11848):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1934)
07-06 17:31:28.167: E/AndroidRuntime(11848):    ... 11 more

Here’s hoping someone can help!

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1 Answer

  1. Editorial Team

    Check to see if you have multiple qualified layout folders (e.g. layout-land, layout-hdpi, layout-xhdpi). If you do, it’s likely that your 4.0 emulator is pulling from a separate layout folder in which you may not have properly assigned the ID for your FrameLayout.

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