十日冲刺

今天学习了相关的数据库操作以及页面的跳转实验了一下再界面上简单的输出一下所求的数据，为下一步整合数据进行相关操作做铺垫：

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.si_fragment,container,false);

        mDatabaseHelper = new DatabaseHelper(getActivity());
        mCostBeanList = new ArrayList<>();
         mTextView = view.findViewById(R.id.textView);
         button = view.findViewById(R.id.button2);
         editText = view.findViewById(R.id.editText2);
         button.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 String i = editText.getText().toString();
                 Cursor cursor =mDatabaseHelper.selectlist(i);
                 if (cursor != null){
                     while (cursor.moveToNext()){
                         CostBean costBean = new CostBean();
                         costBean.costTitle = cursor.getString(cursor.getColumnIndex("cost_title"));
                         costBean.costDate = cursor.getString(cursor.getColumnIndex("cost_date"));
                         costBean.costMoney = cursor.getString(cursor.getColumnIndex("cost_money"));
                         mCostBeanList.add(costBean);


                     }
             }
                 String s = "";
                 for(int j = 0;j<mCostBeanList.size();j++){
                     s += mCostBeanList.get(j).getCostTitle();
                 }
                 mTextView.setText(s);
             }
         });
        return view;
    }

 明天学习相关mpandroidchart相关知识。