2021/2/8

记录数据，将数据放进记账本

package com.example.bookkeeping;

import android.content.ContentValues;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.Toast;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;

import java.text.SimpleDateFormat;
import java.util.Date;

public class jilu extends AppCompatActivity {
    private MyDatabaseHelper dbHelper;

    private EditText editText1;
    private EditText editText2;
    private EditText editText3;
    String shouru="";
    String zhichu="";

    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy年MM月dd日 ");// HH:mm:ss
    //获取当前时间
    Date date = new Date(System.currentTimeMillis());

    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_jilu);

        dbHelper=new MyDatabaseHelper(this,"zhangben.db",null,4);
        dbHelper.getWritableDatabase();

        editText1 = (EditText) findViewById(R.id.edit_11);
        editText2 = (EditText) findViewById(R.id.edit_12);
        editText3 = (EditText) findViewById(R.id.edit_13);

        final RadioButton sex1=(RadioButton) findViewById(R.id.radioButton1);//获取单选按钮组
        final RadioButton sex2=(RadioButton) findViewById(R.id.radioButton2);//获取单选按钮组


        Button button=(Button)findViewById(R.id.button);

        editText3=(EditText)findViewById(R.id.edit_13);
        editText3.setText(simpleDateFormat.format(date));
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                SQLiteDatabase db=dbHelper.getWritableDatabase();
                ContentValues values=new ContentValues();

                String m1=editText1.getText().toString();
                String m2=editText2.getText().toString();
                String m3=editText3.getText().toString();

                values.put("原因",m1);
                values.put("金额",m2);
                values.put("时间",m3);
                if(sex1.isChecked()){
                    shouru="收入";
                    values.put("盈亏",shouru);
                }
                if(sex2.isChecked()){
                    zhichu="支出";
                    values.put("盈亏",zhichu);//存性别
                }

                if(m1.equals("")||m2.equals("")||m3.equals(""))
                {
                    Toast.makeText(jilu.this, "信息不全，请补充", Toast.LENGTH_SHORT).show();
                }
                else{
                    db.insert("zhangben",null,values);
                    //注意别漏掉
                    values.clear();
                    Toast.makeText(jilu.this, "保存成功", Toast.LENGTH_SHORT).show();
                    editText1.setText("");//保存成功清空学号和姓名信息
                    editText2.setText("");
                    editText3.setText(simpleDateFormat.format(date));
                }
            }
        });
    }
}