CODEWITHSUNDEEP
androidandroid-lifecycleandroid-event
ajdeguzman
ajdeguzman

Reputation: 1209

Proper usage of Activity Life Cycle Events

I have two Activities, namely MainActivity and Favorites. On the MainActivity, I have something like this:

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
  //function to insert data to database
  insertData();
}

and I have a link on the MainActivity to link to Favorites Activity. But when clicking the Up Navigation Button from the Favorites back to the MainActivity, the app was closing.

Is it ideal to put the insertion of data to onCreate event?

Please help. Thank you.

Here is the log:

11-08 15:50:14.848: E/SQLiteLog(8746): (5) database is locked
11-08 15:50:14.865: E/SQLiteDatabase(8746): Failed to open database '/data/data/example.pangasinantranslator/databases/dbTrans'.
11-08 15:50:14.865: E/SQLiteDatabase(8746): android.database.sqlite.SQLiteDatabaseLockedException: database is locked (code 5): , while compiling: PRAGMA journal_mode
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:882)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.database.sqlite.SQLiteConnection.executeForString(SQLiteConnection.java:627)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.database.sqlite.SQLiteConnection.setJournalMode(SQLiteConnection.java:313)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.database.sqlite.SQLiteConnection.setWalModeFromConfiguration(SQLiteConnection.java:287)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:215)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:193)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.database.sqlite.SQLiteConnectionPool.openConnectionLocked(SQLiteConnectionPool.java:463)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:185)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:177)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.database.sqlite.SQLiteDatabase.openInner(SQLiteDatabase.java:804)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.database.sqlite.SQLiteDatabase.open(SQLiteDatabase.java:789)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:694)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.app.ContextImpl.openOrCreateDatabase(ContextImpl.java:884)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:221)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:224)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:164)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at example.pangasinantranslator.MySQLiteHelper.addWord(MySQLiteHelper.java:46)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at example.pangasinantranslator.MainActivity.readFile(MainActivity.java:240)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at example.pangasinantranslator.MainActivity.onCreate(MainActivity.java:56)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.app.Activity.performCreate(Activity.java:5020)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2198)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.app.ActivityThread.access$600(ActivityThread.java:181)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1332)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.os.Handler.dispatchMessage(Handler.java:99)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.os.Looper.loop(Looper.java:153)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at android.app.ActivityThread.main(ActivityThread.java:5042)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at java.lang.reflect.Method.invokeNative(Native Method)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at java.lang.reflect.Method.invoke(Method.java:511)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:821)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:584)
11-08 15:50:14.865: E/SQLiteDatabase(8746):     at dalvik.system.NativeStart.main(Native Method)
11-08 15:50:14.865: D/Here is error(8746): android.database.sqlite.SQLiteDatabaseLockedException: database is locked (code 5): , while compiling: PRAGMA journal_mode
11-08 15:50:14.865: D/Insert:(8746): Inserting ..

Upvotes: 1

Views: 147

Answers (1)

Yauraw Gadav
Yauraw Gadav

Reputation: 1746

Anything that you may need to do before the screen is shown to the user should be done in onCreate() before setContentView().

Upvotes: 2

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