Re: [android-developers] ImageView change image

Sorry my fault. forgot to remove the imageview declaration from top.

On Sun, Apr 3, 2011 at 12:07 AM, Raghav Sood <raghavsood@gmail.com> wrote:
Okay I fixed that part now but it still force closes. My code now is:

public class class extends Activity {
    ImageView button = (ImageView)findViewById(R.id.l1m1);
    public OnClickListener mCorkyListener = new OnClickListener() {

        public void onClick(View v) {
          button.setImageResource (R.drawable.m1s);
        }
    };

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        AdView adView = (AdView)findViewById(R.id.ad);
        adView.requestFreshAd();

        ImageView button = (ImageView)findViewById(R.id.l1m1);
        // Register the onClick listener with the implementation above
        button.setOnClickListener(mCorkyListener);

    }
}

and the log reads:

04-03 00:06:53.383 I/ActivityManager( 1368): Start proc com.raghavsood.mp for activity com.raghavsood.mp/.matchpuzzler: pid=26022 uid=10113 gids={3003}
04-03 00:06:53.553 W/dalvikvm(26022): threadid=1: thread exiting with uncaught exception (group=0x40020ac0)
04-03 00:06:53.573 E/AndroidRuntime(26022): FATAL EXCEPTION: main
04-03 00:06:53.573 E/AndroidRuntime(26022): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.raghavsood.mp/com.raghavsood.mp.matchpuzzler}: java.lang.NullPointerException
04-03 00:06:53.573 E/AndroidRuntime(26022): at android.app.ActivityThread.

performLaunchActivity(ActivityThread.java:2585)
04-03 00:06:53.573 E/AndroidRuntime(26022): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
04-03 00:06:53.573 E/AndroidRuntime(26022): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
04-03 00:06:53.573 E/AndroidRuntime(26022): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
04-03 00:06:53.573 E/AndroidRuntime(26022): at android.os.Handler.dispatchMessage(Handler.java:99)
04-03 00:06:53.573 E/AndroidRuntime(26022): at android.os.Looper.loop(Looper.java:123)
04-03 00:06:53.573 E/AndroidRuntime(26022): at android.app.ActivityThread.main(ActivityThread.java:4627)
04-03 00:06:53.573 E/AndroidRuntime(26022): at java.lang.reflect.Method.invokeNative(Native Method)
04-03 00:06:53.573 E/AndroidRuntime(26022): at java.lang.reflect.Method.invoke(Method.java:521)
04-03 00:06:53.573 E/AndroidRuntime(26022): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
04-03 00:06:53.573 E/AndroidRuntime(26022): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
04-03 00:06:53.573 E/AndroidRuntime(26022): at dalvik.system.NativeStart.main(Native Method)
04-03 00:06:53.573 E/AndroidRuntime(26022): Caused by: java.lang.NullPointerException
04-03 00:06:53.573 E/AndroidRuntime(26022): at android.app.Activity.findViewById(Activity.java:1637)
04-03 00:06:53.573 E/AndroidRuntime(26022): at com.raghavsood.mp.matchpuzzler.<init>(matchpuzzler.java:14)
04-03 00:06:53.573 E/AndroidRuntime(26022): at java.lang.Class.newInstanceImpl(Native Method)
04-03 00:06:53.573 E/AndroidRuntime(26022): at java.lang.Class.newInstance(Class.java:1429)
04-03 00:06:53.573 E/AndroidRuntime(26022): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
04-03 00:06:53.573 E/AndroidRuntime(26022): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
04-03 00:06:53.573 E/AndroidRuntime(26022): ... 11 more
04-03 00:06:53.583 W/ActivityManager( 1368):   Force finishing activity com.raghavsood.mp/.matchpuzzler

Now I have no idea as to what is wrong though it still seems to be my findviewbyid

Please help



--
Raghav Sood
http://www.raghavsood.com/
http://www.androidappcheck.com/

--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en