hi all i am creating database in android ,i insert some randomly generate Integer in to the table and get the row from table which is match to given input. but i get attempt to acquire a reference on a close SQLiteClosable. if i use without where clause it is works. only problem is when i use where clause in query.
my code:
db = openOrCreateDatabase("TestData.db", SQLiteDatabase.CREATE_IF_NECESSARY, null);
db.setVersion(1);
db.setLocale(Locale.getDefault());
db.setLockingEnabled(true);
final String CREATE_TABLE_COUNTRIES ="CREATE TABLE IF NOT EXISTS tbl_countries (id INTEGER);";
db.execSQL(CREATE_TABLE_COUNTRIES);
ContentValues values = new ContentValues();
values.put("id", 1);
db.insert("tbl_countries", null, values);
Log.e("sql", "ok");
b1.setOnClickListener(new View.OnClickListener()
{
public void onClick(View view)
{
String p = et.getText().toString();
String [] columns=new String[]{"id"};
Cursor c=db.query("tbl_countries", columns, "id"+"=?",new String[]{p}, null, null, null);
c.moveToFirst();
c.close();
}
});
db.close();
my log cat information
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): java.lang.IllegalStateException: attempt to acquire a reference on a close SQLiteClosable
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.database.sqlite.SQLiteClosable.acquireReference(SQLiteClosable.java:31)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:56)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:49)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:49)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1236)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1123)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1081)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1158)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at com.sql.where.main$1.onClick(main.java:63)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.view.View.performClick(View.java:2364)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.view.View.onTouchEvent(View.java:4179)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.widget.TextView.onTouchEvent(TextView.java:6591)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.view.View.dispatchTouchEvent(View.java:3709)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:883)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:883)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:883)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:883)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1659)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.app.Activity.dispatchTouchEvent(Activity.java:2061)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.view.ViewRoot.handleMessage(ViewRoot.java:1691)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.os.Handler.dispatchMessage(Handler.java:99)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.os.Looper.loop(Looper.java:123)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at android.app.ActivityThread.main(ActivityThread.java:4363)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at java.lang.reflect.Method.invokeNative(Native Method)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at java.lang.reflect.Method.invoke(Method.java:521)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
05-23 19:02:20.880: ERROR/AndroidRuntime(5533): at dalvik.system.NativeStart.main(Native Method)
In your
onClick()method db is already closed. You should open it again or not close it, but the first is preferrable.