IllegalStateException raised from the SQLite module. about omnidroid HOT 5 CLOSED

Start to take a look at this issue.

Code review at:
http://codereview.appspot.com/1717045

Caused by:
Exception is caused by database cursor objects being left open even when not in 
use. Excerpt from the logs:
06-16 16:36:27.458: INFO/dalvikvm(234): Uncaught exception thrown by finalizer 
(will be discarded):
06-16 16:36:27.458: INFO/dalvikvm(234): Ljava/lang/IllegalStateException;: 
Finalizing cursor android.database.sqlite.SQLiteCursor@43818050 on 
RegisteredApps that has not been deactivated or closed
06-16 16:36:27.458: INFO/dalvikvm(234):     at 
android.database.sqlite.SQLiteCursor.finalize(SQLiteCursor.java:596)
06-16 16:36:27.458: INFO/dalvikvm(234):     at 
dalvik.system.NativeStart.run(Native Method)

Another similar problem is found where the database object itself is left open 
even when not in use. Excerpt from the logs:

06-16 16:14:21.893: ERROR/Database(233): Leak found
06-16 16:14:21.893: ERROR/Database(233): java.lang.IllegalStateException: 
/data/data/edu.nyu.cs.omnidroid.app/databases/omnidroid SQLiteDatabase created 
and never closed
06-16 16:14:21.893: ERROR/Database(233):     at 
android.database.sqlite.SQLiteDatabase.<init>(SQLiteDatabase.java:1581)
06-16 16:14:21.893: ERROR/Database(233):     at 
android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:638)
06-16 16:14:21.893: ERROR/Database(233):     at 
android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:
659)
06-16 16:14:21.893: ERROR/Database(233):     at 
android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:
652)
06-16 16:14:21.893: ERROR/Database(233):     at 
android.app.ApplicationContext.openOrCreateDatabase(ApplicationContext.java:482)
06-16 16:14:21.893: ERROR/Database(233):     at 
android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:193)
06-16 16:14:21.893: ERROR/Database(233):     at 
android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.ja
va:98)
06-16 16:14:21.893: ERROR/Database(233):     at 
edu.nyu.cs.omnidroid.app.model.CoreRuleDbHelper.<init>(CoreRuleDbHelper.java:65)
06-16 16:14:21.893: ERROR/Database(233):     at 
edu.nyu.cs.omnidroid.app.controller.HandlerService.onStart(HandlerService.java:5
8)
06-16 16:14:21.893: ERROR/Database(233):     at 
android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2776)
06-16 16:14:21.893: ERROR/Database(233):     at 
android.app.ActivityThread.access$3400(ActivityThread.java:116)
06-16 16:14:21.893: ERROR/Database(233):     at 
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1855)
06-16 16:14:21.893: ERROR/Database(233):     at 
android.os.Handler.dispatchMessage(Handler.java:99)
06-16 16:14:21.893: ERROR/Database(233):     at 
android.os.Looper.loop(Looper.java:123)
06-16 16:14:21.893: ERROR/Database(233):     at 
android.app.ActivityThread.main(ActivityThread.java:4203)
06-16 16:14:21.893: ERROR/Database(233):     at 
java.lang.reflect.Method.invokeNative(Native Method)
06-16 16:14:21.893: ERROR/Database(233):     at 
java.lang.reflect.Method.invoke(Method.java:521)
06-16 16:14:21.893: ERROR/Database(233):     at 
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
06-16 16:14:21.893: ERROR/Database(233):     at 
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
06-16 16:14:21.893: ERROR/Database(233):     at 
dalvik.system.NativeStart.main(Native Method)

Summary of changes:
Made sure that database cursor objects are closed when they are not needed 
after acquiring them. Same thing also applies to database objects.

Test Cases (must check the logs that no exception occurs while performing 
these):
1. Go all types of screens while creating a new rule - root event, add action, 
add filter.
2. With Omnidroid active, go to home and open another application. Go back to 
home and re-open Omnidroid.
3. Open Omnidroid and proceed to any screen as deep as possible. Keep on 
pressing back until you reach the home screen and reopen Omnidroid again.

Forgot to add one more test case:
4. Trigger a saved rule.

Checked-in on r757.