android/app/src/main/java/com/example/myapplication/MainActivity2.java

package com.example.myapplication;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.DatePickerDialog;
import android.content.ComponentName;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.RadioGroup;
import android.widget.RatingBar;
import android.widget.Spinner;
import android.widget.Toast;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

public class MainActivity2 extends Activity {
    String firstPwd, secondPwd;
    boolean isYes = true;
    String userSex;
    private EditText edtNewUserName;
    private EditText edtPwd1, edtPwd2;
    private EditText edtYear;
    private RatingBar rtMarks;
    private CheckBox cbRead, cbSing, cbComputer, cbSwing, cbGame, cbDancing, cbWuShu, cbRun;
    private RadioGroup rdgGender;
    private Spinner spnProvince, spnCity;
    private Button btnReg, btnYear, back;
    private List<String> cityList;

    SqliteDbManager instance = SqliteDbManager.getInstance();

    //JSONObject对象，处理一个一个的对象
    //JSONObject对象，处理一个一个集合或者数组
    //保存带集合的json字符串

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        initView();
        btnReg.setOnClickListener(v -> {
            if (!(cbDancing.isChecked() || cbRun.isChecked() || cbWuShu.isChecked() || cbGame.isChecked() || cbComputer.isChecked() || cbSing.isChecked() || cbSwing.isChecked() || cbRead.isChecked())) {
                Toast.makeText(MainActivity2.this, "爱好必须选择一个", Toast.LENGTH_LONG).show();
                isYes = false;
            } else {
                isYes = true;
            }

            if (!(edtPwd1.getText().toString().equals(edtPwd2.getText().toString()))) {
                Toast.makeText(MainActivity2.this, "两次输入密码要一致", Toast.LENGTH_LONG).show();
                isYes = false;
            } else {
                isYes = true;
            }


            AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity2.this);
            builder.setMessage("确认注册？");
            builder.setPositiveButton("是", (dialog, which) -> {

                Intent intent = new Intent(MainActivity2.this, MainActivity.class);
                intent.putExtra("username", edtNewUserName.getText().toString());
                intent.putExtra("password", edtPwd1.getText().toString());
                this.register();
                startActivity(intent);
            });
            builder.setNegativeButton("否", (dialog, which) -> isYes = false);
            builder.create().show();

        });

        rdgGender.setOnCheckedChangeListener((group, checkedId) -> {
            switch (checkedId) {
                case R.id.rdMale:
                    Toast.makeText(MainActivity2.this, "男", Toast.LENGTH_LONG).show();
                    userSex = "男";
                    break;
                case R.id.rdFemale:
                    Toast.makeText(MainActivity2.this, "女", Toast.LENGTH_LONG).show();
                    userSex = "女";
                    break;
            }
        });

        back.setOnClickListener(v -> {
            Intent intent = new Intent();
            ComponentName componentName = new ComponentName(MainActivity2.this, MainActivity.class);
            intent.setComponent(componentName);
            startActivity(intent);
        });
    }

    private void register(){
        String username = edtNewUserName.getText().toString();
        String password = edtPwd1.getText().toString();
        instance.insertTb("person", username, password);
    }
    void initView() {
        instance.setSqliteDbOpen(this);
        edtNewUserName = this.findViewById(R.id.edtNewUserName);
        edtPwd1 = this.findViewById(R.id.edtPwd);
        edtPwd2 = this.findViewById(R.id.edtSndPwd);
        cbRead = this.findViewById(R.id.cbRead);
        cbComputer = this.findViewById(R.id.cbCompute);
        cbSing = this.findViewById(R.id.cbSing);
        cbSwing = this.findViewById(R.id.cbSwing);
        cbGame = this.findViewById(R.id.cbGame);
        cbWuShu = this.findViewById(R.id.cbWushu);
        cbRun = this.findViewById(R.id.cbRunning);
        cbDancing = this.findViewById(R.id.cbDancing);
        btnReg = this.findViewById(R.id.btnRegister);
        rdgGender = this.findViewById(R.id.rdgGender);
        back = this.findViewById(R.id.back);
        isYes = true;
    }

}