sqlite 增删改查

PersonDao1.java

package mm.shandong.com.testsqlsqllite.dao;

import android.content.Context;

import android.database.Cursor;

import android.database.sqlite.SQLiteDatabase;

import java.util.ArrayList;

import java.util.List;

import mm.shandong.com.testsqlsqllite.entity.Person;

import mm.shandong.com.testsqlsqllite.util.StudySQLiteOpenHelper;

/**

 * Created by buyadong on 2016/8/7.

 */

public class PersonDao1 {

    Context context;

    StudySQLiteOpenHelper studySQLiteOpenHelper;

    public PersonDao1(Context context) {

        this.context = context;

        studySQLiteOpenHelper = new StudySQLiteOpenHelper(context, "androidStudy.db", 7);

    }

    public void addPerson(Person person) {

        SQLiteDatabase db = studySQLiteOpenHelper.getWritableDatabase();

        String sql = "insert into person(_id,name,sex,age,code) values(null,?,?,?,?)";

        db.execSQL(sql,new Object[]{person.getName(),

                person.getSex(), person.getAge(), person.getCode()});

    }

    public void deletePerson(Person person) {

        SQLiteDatabase db = studySQLiteOpenHelper.getWritableDatabase();

        String sql = "delete from person where _id=?";

        db.execSQL(sql, new Object[]{person.get_id()});

    }

    public void updatePerson(Person person) {

        SQLiteDatabase db = studySQLiteOpenHelper.getWritableDatabase();

        String sql = "update person set name=?,sex=?,age=?,code=? where _id=?";

        db.execSQL(sql, new Object[]{person.getName(), person.getSex(),

                person.getAge(), person.getCode(), person.get_id()});

    }

    public List<Person> getAllPerson() {

        List<Person> persons = new ArrayList<Person>();

        SQLiteDatabase db = studySQLiteOpenHelper.getWritableDatabase();

        String sql = "select * from person";

        Cursor cursor = db.rawQuery(sql, null);

        while (cursor.moveToNext()) {

            String name = cursor.getString(cursor.getColumnIndex("name"));

            String sex = cursor.getString(cursor.getColumnIndex("sex"));

            int age = cursor.getInt(cursor.getColumnIndex("age"));

            String code = cursor.getString(cursor.getColumnIndex("code"));

            int _id = cursor.getInt(cursor.getColumnIndex("_id"));

            Person person = new Person(name, sex, age, code);

            person.set_id(_id);

            persons.add(person);

        }

        return persons;

    }

}

　　 Person实体类

package mm.shandong.com.testsqlsqllite.entity;

import java.io.Serializable;

/**

 * Created by 安卓无忧 on 2016/7/27.

 */

public class Person implements Serializable{

      private  String name;

      private  int age;

      private String code;

      private String sex;

    public String getSex() {

        return sex;

    }

    public void setSex(String sex) {

        this.sex = sex;

    }

    private String first_letter;

      private int _id;

    public void set_id(int _id) {

        this._id = _id;

    }

    public int get_id() {

        return _id;

    }

    public void setFirst_letter(String first_letter) {

        this.first_letter = first_letter;

    }

    public String getFirst_letter() {

        return first_letter;

    }

    public Person(){

    }

    public Person(String name, int age, String code){

        this.name=name;

        this.age=age;

        this.code=code;

    }

    public Person(String name,String sex, int age, String code){

        this.name=name;

        this.age=age;

        this.code=code;

        this.sex=sex;

    }

    @Override

    public String toString() {

        return  name +" "+age+" "+code;

    }

    public void setAge(int age) {

        this.age = age;

    }

    public void setCode(String code) {

        this.code = code;

    }

    public void setName(String name) {

        this.name = name;

    }

    public int getAge() {

        return age;

    }

    public String getCode() {

        return code;

    }

    public String getName() {

        return name;

    }

}

　StudySQLiteOpenHelper

package mm.shandong.com.testsqlsqllite.util;

import android.content.Context;

import android.database.sqlite.SQLiteDatabase;

import android.database.sqlite.SQLiteOpenHelper;

/**

 * Created by 安卓无忧 on 2016/7/10.

 */

public class StudySQLiteOpenHelper extends SQLiteOpenHelper {

    String dataBase_name;

    Context context;

    String create_TABLE_sql="create table person(_id INTEGER PRIMARY KEY AUTOINCREMENT," +

            "name varchar(30),age integer,sex varchar(30),code varchar(30))" ;

    String delete_Sql="delete from person";

    public StudySQLiteOpenHelper(Context context, String name, int verson){

        super(context,name,null,verson);

        this.context=context;

    }

    @Override

    public void onCreate(SQLiteDatabase sqLiteDatabase) {

          sqLiteDatabase.execSQL(create_TABLE_sql);

    }

    @Override

    public void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {

    }

}

　　activity

package mm.shandong.com.testsqlsqllite;

import android.app.AlertDialog;

import android.content.DialogInterface;

import android.content.Intent;

import android.graphics.Color;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.text.TextUtils;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.EditText;

import android.widget.ListView;

import android.widget.RadioButton;

import android.widget.RadioGroup;

import android.widget.TextView;

import android.widget.Toast;

import java.lang.reflect.Field;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import mm.shandong.com.testsqlsqllite.dao.PersonDao1;

import mm.shandong.com.testsqlsqllite.entity.Person;

public class TestSQLSqlLiteActivity extends AppCompatActivity {

    ListView listView;

    List<Person> persons;

    PersonDao1 personDao;

    BaseAdapter personAdapter;

    Map<String,Boolean> radioStates;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_test_sqlsql_lite);

        radioStates=new HashMap<String,Boolean>();

        personDao=new PersonDao1(this);

        listView= (ListView) findViewById(R.id.listView);

        persons=personDao.getAllPerson();

        initListView();

    }

    public void initListView(){

        personAdapter=new BaseAdapter() {

            @Override

            public int getCount() {

                return persons.size();

            }

            @Override

            public Object getItem(int position) {

                return persons.get(position);

            }

            @Override

            public long getItemId(int position) {

                return position;

            }

            @Override

            public View getView(final  int position, View view, ViewGroup viewGroup) {

                view=getLayoutInflater().inflate(R.layout.item_sqlite_listview,null);

                TextView textViewPerson_name= (TextView) view.findViewById(R.id.textViewPerson_name);

                TextView textViewPerson_sex= (TextView) view.findViewById(R.id.textViewPerson_sex);

                TextView textViewPerson_code=(TextView)view.findViewById(R.id.textViewPerson_code);

                TextView textViewPerson_age= (TextView) view.findViewById(R.id.textViewPerson_age);

                final Person person= (Person) getItem(position);

                textViewPerson_name.setText(person.getName());

                textViewPerson_age.setText(person.getAge()+"");

                textViewPerson_sex.setText(person.getSex());

                textViewPerson_code.setText(person.getCode());

                RadioButton radioButton= (RadioButton) view.findViewById(R.id.radioButton);

                radioButton.setOnClickListener(new View.OnClickListener() {

                       @Override

                       public void onClick(View view) {

                           if(view instanceof RadioButton) {

                               RadioButton radioButton = (RadioButton) view;

                               if (radioButton.isChecked()) {

                                   radioStates.put(String.valueOf(position), true);

                                   for (String key : radioStates.keySet()) {

                                       if (!key.equals(String.valueOf(position))) {

                                           radioStates.put(key, false);

                                       }

                                   }

                                   notifyDataSetChanged();

                               }

                           }

                       }

                   }

                );

                Boolean tempState=radioStates.get(String.valueOf(position));

                if(tempState!=null&&tempState){

                    radioButton.setChecked(true);

                    view.setBackgroundColor(Color.BLUE);

                }else{

                    radioButton.setChecked(false);

                    view.setBackgroundColor(Color.WHITE);

                }

                return view;

            }

        };

        listView.setAdapter(personAdapter);

    }

    public void addPerson(View view){

        AlertDialog.Builder builder= new AlertDialog.Builder(this);

        builder.setTitle("新增用户").create();

        View childView=getLayoutInflater().inflate(R.layout.layout_sqlite_alert,null);

        builder.setView(childView);

        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {

            @Override

            public void onClick(DialogInterface dialogInterface, int i) {

                Field field = null;

                try {

                    field = dialogInterface.getClass().getSuperclass().getDeclaredField("mShowing");

                    field.setAccessible(true);

                    field.set(dialogInterface, true);

                } catch (Exception e) {

                    e.printStackTrace();

                }

            }

        });

        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {

            @Override

            public void onClick(DialogInterface dialogInterface, int i) {

                try {

                    Field field = dialogInterface.getClass().getSuperclass().getDeclaredField("mShowing");

                    field.setAccessible(true);

                    field.set(dialogInterface,false);

                    AlertDialog ad;

                    if(dialogInterface instanceof AlertDialog){

                        ad= (AlertDialog) dialogInterface;

                        EditText editViewPerson_name=

                                (EditText) ad.findViewById(R.id.editViewPerson_name);

                        EditText editViewPerson_code=

                                (EditText) ad.findViewById(R.id.editViewPerson_code);

                        EditText editViewPerson_age=

                                (EditText) ad.findViewById(R.id.editViewPerson_age);

                        RadioGroup radioGroupSex=

                                (RadioGroup) ad.findViewById(R.id.radioGroupSex);

                        if(TextUtils.isEmpty(editViewPerson_name.getText().toString())){

                            Toast.makeText(TestSQLSqlLiteActivity.this,

                                    "姓名不能为空",Toast.LENGTH_SHORT).show();

                            return;

                        }

                        if(TextUtils.isEmpty(editViewPerson_code.getText().toString())){

                            Toast.makeText(TestSQLSqlLiteActivity.this,

                                    "编号不能为空",Toast.LENGTH_SHORT).show();

                            return;

                        }

                        if(TextUtils.isEmpty(editViewPerson_age.getText().toString())){

                            Toast.makeText(TestSQLSqlLiteActivity.this,

                                    "年龄不能为空",Toast.LENGTH_SHORT).show();

                            return;

                        }

                        Person person=new Person();

                        person.setAge(Integer.parseInt(editViewPerson_age.getText().toString()));

                        person.setName(editViewPerson_name.getText().toString());

                        person.setCode(editViewPerson_code.getText().toString());

                        RadioButton radioButton= (RadioButton) radioGroupSex.

                                findViewById(radioGroupSex.getCheckedRadioButtonId());

                        person.setSex(radioButton.getText().toString());

                        personDao.addPerson(person);

                        persons=personDao.getAllPerson();

                        radioStates=new HashMap<String,Boolean>();

                        personAdapter.notifyDataSetChanged();

                        field.set(dialogInterface,true);

                    }

                } catch (Exception e) {

                    e.printStackTrace();

                }

            }

        });

        builder.show();

    }

    public void deletePerson(View view){

        int position=-1;

        for(int i=0;i<listView.getChildCount();i++){

            View childView=listView.getChildAt(i);

            RadioButton radioButton= (RadioButton) childView.findViewById(R.id.radioButton);

            if(radioButton.isChecked()){

                position=i;

                break;

            }

        }

        if(position!=-1){

            Person person= persons.get(position);

            personDao.deletePerson(person);

            persons=personDao.getAllPerson();

            radioStates=new HashMap<String,Boolean>();

            personAdapter.notifyDataSetChanged();

        }else{

            Toast.makeText(this,"请选择要删除的行",Toast.LENGTH_SHORT);

        }

    }

    public void updatePerson(View view){

        int position=-1;

        for(int i=0;i<listView.getChildCount();i++){

            View childView=listView.getChildAt(i);

            RadioButton radioButton= (RadioButton) childView.findViewById(R.id.radioButton);

            if(radioButton.isChecked()){

                position=i;

                break;

            }

        }

        if(position!=-1){

            final Person person= persons.get(position);

            AlertDialog.Builder builder= new AlertDialog.Builder(this);

            builder.setTitle("修改用户").create();

            View childView=getLayoutInflater().inflate(R.layout.layout_sqlite_alert,null);

            EditText editViewPerson_name=

                    (EditText) childView.findViewById(R.id.editViewPerson_name);

            EditText editViewPerson_code=

                    (EditText) childView.findViewById(R.id.editViewPerson_code);

            EditText editViewPerson_age=

                    (EditText) childView.findViewById(R.id.editViewPerson_age);

            RadioGroup radioGroupSex=

                    (RadioGroup) childView.findViewById(R.id.radioGroupSex);

            editViewPerson_name.setText(person.getName());

            editViewPerson_age.setText(String.valueOf(person.getAge()));

            editViewPerson_code.setText(person.getCode());

            if(person.getSex().equals("男")){

                ((RadioButton)radioGroupSex.getChildAt(0)).setChecked(true);

            }else{

                ((RadioButton)radioGroupSex.getChildAt(1)).setChecked(true);

            }

            builder.setView(childView);

            builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {

                @Override

                public void onClick(DialogInterface dialogInterface, int i) {

                }

            });

            builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {

                @Override

                public void onClick(DialogInterface dialogInterface, int i) {

                    try {

                        Field field = dialogInterface.getClass().getSuperclass().getDeclaredField("mShowing");

                        field.setAccessible(true);

                        field.set(dialogInterface,false);

                        AlertDialog ad;

                        if(dialogInterface instanceof AlertDialog){

                            ad= (AlertDialog) dialogInterface;

                            EditText editViewPerson_name=

                                    (EditText) ad.findViewById(R.id.editViewPerson_name);

                            EditText editViewPerson_age=

                                    (EditText) ad.findViewById(R.id.editViewPerson_age);

                            EditText editViewPerson_code=

                                    (EditText) ad.findViewById(R.id.editViewPerson_code);

                            RadioGroup radioGroupSex= (RadioGroup) ad.findViewById(R.id.radioGroupSex);

                            if(TextUtils.isEmpty(editViewPerson_name.getText().toString())){

                                Toast.makeText(TestSQLSqlLiteActivity.this,

                                        "姓名不能为空",Toast.LENGTH_SHORT).show();

                                return;

                            }

                            if(TextUtils.isEmpty(editViewPerson_age.getText().toString())){

                                Toast.makeText(TestSQLSqlLiteActivity.this,

                                        "年龄不能为空",Toast.LENGTH_SHORT).show();

                                return;

                            }

                            person.setAge(Integer.parseInt(editViewPerson_age.getText().toString()));

                            person.setName(editViewPerson_name.getText().toString());

                            RadioButton radioButton= (RadioButton) radioGroupSex.

                                    findViewById(radioGroupSex.getCheckedRadioButtonId());

                            person.setSex(radioButton.getText().toString());

                            person.setCode(editViewPerson_code.getText().toString());

                            personDao.updatePerson(person);

                            persons=personDao.getAllPerson();

                            radioStates=new HashMap<String,Boolean>();

                            personAdapter.notifyDataSetChanged();

                            field.set(dialogInterface,true);

                        }

                    } catch (Exception e) {

                        e.printStackTrace();

                    }

                }

            });

            builder.show();

        }else{

            Toast.makeText(this,"请选择要删除的行",Toast.LENGTH_SHORT);

        }

    }

}

　　布局文件

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical">

    <LinearLayout

        android:id="@+id/linearLayout"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="horizontal">

        <Button

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:onClick="addPerson"

            android:text="新增" />

        <Button

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:onClick="deletePerson"

            android:text="删除" />

        <Button

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:onClick="updatePerson"

            android:text="修改" />

    </LinearLayout>

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content">

        <TextView

            android:layout_width="0dp"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:gravity="center_horizontal"

            android:text="姓名" />

        <TextView

            android:layout_width="0dp"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:gravity="center_horizontal"

            android:text="编号" />

        <TextView

            android:layout_width="0dp"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:gravity="center_horizontal"

            android:text="年龄" />

        <TextView

            android:layout_width="0dp"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:gravity="center_horizontal"

            android:text="性别" />

        <TextView

            android:layout_width="0dp"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:gravity="center_horizontal"

            android:text="请选择" />

    </LinearLayout>

    <ListView

        android:id="@+id/listView"

        android:layout_width="match_parent"

        android:layout_height="match_parent" />

</LinearLayout>

如果想要源码，请留下邮箱。

Demo下载
最后，以上例子都来源与安卓无忧，请去应用宝或者豌豆荚下载：http://android.myapp.com/myapp/detail.htm?apkName=com.shandong.mm.androidstudy，源码例子文档一网打尽

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