寒假每日日报35（体温登记app——进度8）

今天将体温APP使用了数据库，即当点击提交按钮时可以将数据输入到数据库中

代码如下：

activity_main.xml（提交按钮）

<Button
        android:id="@+id/btn_submit"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="提交"
        android:layout_below="@id/temperature"
        android:layout_marginTop="20dp"
        android:background="#1E86FD"
        />

Constants.java

public class Constants {
    public static final String DATABASE_NAME ="TemperatureAPP.db";
    public static final int VERSION_CODE=1;
    public static final String TABLE_NAME="temper";
}

MyDatabaseHelper.java

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class MyDatabaseHelper extends SQLiteOpenHelper {

    private Context mContext;
    public MyDatabaseHelper(Context context){
        super(context,Constants.DATABASE_NAME,null,Constants.VERSION_CODE);
        mContext=context;
    }

    @Override
    public void onCreate(SQLiteDatabase db){
        //创建时的回调
        String sql="create table " + Constants.TABLE_NAME + "(name varchar,data varchar,time varchar,local varchar,temperature varchar)";
        db.execSQL(sql);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db,int oldVersion,int newVersion){
        //升级时的回调
    }

}

Dao.java

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;

public class Dao {

    private final MyDatabaseHelper mHelper;

    public Dao(Context context){
        //创建数据库
        mHelper=new MyDatabaseHelper(context);
    }

    public void insert(String Name,String Data,String Time,String Local,String  Tem){
        SQLiteDatabase db=mHelper.getWritableDatabase();
        String sql="insert into "+Constants.TABLE_NAME+"(name,data,time,local,temperature) values(?,?,?,?,?)";
        db.execSQL(sql,new Object[]{Name,Data,Time,Local,Tem});
        db.close();
    }

}

MainActivity.java

//提交按钮
private Button mBtnSubmit;
@Override
protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //提交按钮
        mBtnSubmit = findViewById(R.id.btn_submit);
        mBtnSubmit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                final EditText nameET=findViewById(R.id.name);//获取姓名位置
                final EditText dataET=findViewById(R.id.data);//获取日期位置
                final EditText timeET=findViewById(R.id.time);//获取时间位置
                final EditText localET=findViewById(R.id.local);//获取地点位置
                final EditText temperatureET=findViewById(R.id.temperature);//获取体温位置

                //存数据
                mBtnSubmit.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {

                        String NameData=nameET.getText().toString();//获取姓名
                        String DateData=dataET.getText().toString();//获取日期
                        String TimeData=timeET.getText().toString();//获取时间
                        String LocalData=localET.getText().toString();//获取地点
                        String TemData=temperatureET.getText().toString();//获取体温

                        new persion().setName(NameData);
                        new persion().setDate(DateData);
                        new persion().setTime(TimeData);
                        new persion().setLocal(LocalData);
                        new persion().setTemperature(TemData);

                        //创建数据库
                        MyDatabaseHelper helper=new MyDatabaseHelper(MainActivity.this);
                        helper.getWritableDatabase();
                        Dao dao=new Dao(MainActivity.this);

                        if(NameData.equals("")|| DateData.equals("")||TimeData.equals("")||LocalData.equals("")||TemData.equals("")){
                            Toast.makeText(MainActivity.this,"请将信息填写完整",Toast.LENGTH_SHORT).show();
                        }else{
                            dao.insert(NameData,DateData,TimeData,LocalData,TemData);
                            Toast.makeText(MainActivity.this,"保存成功",Toast.LENGTH_SHORT).show();
                            //跳转到Button的演示界面，即submitActivity
                            Toast.makeText(MainActivity.this,"提交成功",Toast.LENGTH_SHORT).show();
                            Intent intent=null;
                            intent=new Intent(MainActivity.this,SubmitActivity.class);//SubmitActivity为新建的一个Activity
                            startActivity(intent);
                        }
                    }
                });
            }
        });

}    

activity_submit.xml

<TextView
        android:id="@+id/success"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="提交成功"
        android:textSize="25sp"
        android:gravity="center"
        android:textColor="#000000"
        />

效果图：

 数据库效果图：