为什么没有在数据库中插入这些值？

Question

我的数据库代码是这样的。

        public void addprofileinfo(HashMap<String, String> queryValues){

        SQLiteDatabase database = this.getWritableDatabase();

        ContentValues values = new ContentValues();

        values.put("StudentName", queryValues.get("StudentName"));
        values.put("RegistrationNo", queryValues.get("RegistrationNo"));
        values.put("Faculty", queryValues.get("Faculty"));
        values.put("TotalFeePaid", queryValues.get("TotalFeePaid"));

        database.insert("FEE", null, values);

        database.close();

addData();
}

public void addData(){
    save.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            try{

                HashMap<String, String> queryValuesMap = new HashMap<String, String>();

            queryValuesMap.put("StudentName",editName.getText().toString());
            queryValuesMap.put("Faculty", editFaculty.getText().toString());
            queryValuesMap.put("TotalFee",      editFee.getText().toString());
            queryValuesMap.put("RegistrationNo",        editRegid.getText().toString());

            dbtools.addprofileinfo(queryValuesMap);
            Toast.makeText(insertData.this, "Successful!!!", Toast.LENGTH_LONG).show();

            Intent intent;
            intent = new Intent(getApplicationContext(), MainActivity.class);
            startActivity(intent);
            dbtools.close();
            insertData.this.finish();



            }catch(Exception e){
                Toast.makeText(insertData.this, e.getMessage(), Toast.LENGTH_LONG).show();
            }}
            });

出现成功保存的消息，但在数据库中找不到该值。请告诉我为什么会这样？

Answer 1

试着放：

        dbtools.close();
        insertData.this.finish(); 

之前：

        Intent intent;
        intent = new Intent(getApplicationContext(), MainActivity.class);
        startActivity(intent);