没有在Manifest.xml中注册Activity

12-26 06:29:17.351: E/AndroidRuntime(911): FATAL EXCEPTION: main
12-26 06:29:17.351: E/AndroidRuntime(911): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.hjx.sns.android.activity/com.hjx.sns.android.activity.InterestClassGroupGridView}; have you declared this activity in your AndroidManifest.xml?
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1405)
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.app.ActivityThread.resolveActivityInfo(ActivityThread.java:1457)
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.app.LocalActivityManager.startActivity(LocalActivityManager.java:277)
12-26 06:29:17.351: E/AndroidRuntime(911):     at com.hjx.sns.android.activity.InterestGroup.startMyAcitvity(InterestGroup.java:79)
12-26 06:29:17.351: E/AndroidRuntime(911):     at com.hjx.sns.android.activity.InterestGroup$1.onClick(InterestGroup.java:47)
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.view.View.performClick(View.java:2485)
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.view.View$PerformClick.run(View.java:9080)
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.os.Handler.handleCallback(Handler.java:587)
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.os.Handler.dispatchMessage(Handler.java:92)
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.os.Looper.loop(Looper.java:123)
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.app.ActivityThread.main(ActivityThread.java:3683)
12-26 06:29:17.351: E/AndroidRuntime(911):     at java.lang.reflect.Method.invokeNative(Native Method)
12-26 06:29:17.351: E/AndroidRuntime(911):     at java.lang.reflect.Method.invoke(Method.java:507)
12-26 06:29:17.351: E/AndroidRuntime(911):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
12-26 06:29:17.351: E/AndroidRuntime(911):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
12-26 06:29:17.351: E/AndroidRuntime(911):     at dalvik.system.NativeStart.main(Native Method)