JAVA日报

从零开始的体温app开发（SecondActivity）

package com.example.myapplication;

import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;

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

import java.util.List;

import adapter.UserListAdapter;
import bean.User;
import bean.User2;
import dao.UserDao;
import dao.UserDao2;

public class SecondActivity extends AppCompatActivity implements View.OnClickListener {
    private EditText editText0;
    private EditText editText1;
    private EditText editText2;
    private EditText editText3;
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);
        findViewById(R.id.btn4).setOnClickListener(this);
        InitData();
    }
    private void InitData(){
        editText0 = (EditText) findViewById(R.id.edt_num);
        editText1 = (EditText) findViewById(R.id.edt_name2);
        editText2 = (EditText) findViewById(R.id.edt_cl);
        editText3 = (EditText) findViewById(R.id.edt_phone);
    }
    private void savedb(String num, String name2, String cl, String phone) {
        UserDao2 userDao = UserDao2.getInstance(getApplicationContext());
        User2 user2 = new User2(num, name2,cl, phone);
        userDao.insert(user2);
    }

    @Override
    public void onClick(View v) {
        String num = editText0.getText().toString();
        String name2 = editText1.getText().toString();
        String cl = editText2.getText().toString();
        String phone = editText3.getText().toString();
        if (num.length() == 0||name2.length() == 0||cl.length() == 0||phone.length() == 0||phone.length() != 11) {
            Toast.makeText(getApplicationContext(), "请输入完整或正确信息", Toast.LENGTH_SHORT).show();
            return;
        } else {
            savedb(num,name2,cl,phone);
            Toast.makeText(getApplicationContext(), "注册成功", Toast.LENGTH_SHORT).show();
        }
    }
}