AndroidStudio实现简易android登录注册修改密码页面。
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利用sqlite实现简易登录注册以及修改密码功能。
页面设计
登录页面activity_login.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#0BD1EA"
android:orientation="vertical">
<RelativeLayout
android:id="@+id/rtLytTop"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_margin="30dp"
>
</RelativeLayout>
<RelativeLayout
android:id="@+id/rtLytMiddle"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_below="@+id/rtLytTop"
android:layout_marginLeft="30dp"
android:layout_marginTop="1dp"
android:layout_marginRight="30dp"
>
<EditText
android:id="@+id/edt_UserName"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginLeft="10dp"
android:background="@drawable/editext_shape"
android:hint="请输入用户名"
android:inputType="text">
</EditText>
</RelativeLayout>
<LinearLayout
android:id="@+id/rtLyMiddle"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_below="@+id/rtLytMiddle"
android:layout_marginLeft="30dp"
android:layout_marginTop="20dp"
android:layout_marginRight="30dp"
android:orientation="horizontal">
<EditText
android:id="@+id/edt_Password"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginLeft="10dp"
android:background="@drawable/editext_shape"
android:hint="请输入密码"
android:inputType="textPassword">
</EditText>
</LinearLayout>
<Button
android:id="@+id/btn_Login"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_below="@+id/rtLyMiddle"
android:layout_margin="70dp"
android:text="登录"
android:background="@drawable/button_shape"
android:textColor="#ffffff"
android:textSize="24sp">
</Button>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true">
<Button
android:id="@+id/btn_Forget"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#0BD1EA"
android:paddingLeft="10dp"
android:paddingBottom="10dp"
android:text="忘记密码？">
</Button>
<Button
android:id="@+id/btn_Register"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:background="#0BD1EA"
android:paddingRight="10dp"
android:paddingBottom="10dp"
android:text="新用户">
</Button>
</RelativeLayout>
</RelativeLayout>
界面截图
注册界面
activity_register.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#0BD1EA"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="用户注册"
android:textSize="30sp"
android:gravity="center">
</TextView>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp">
<TextView
android:layout_width="120dp"
android:layout_height="50dp"
android:text="用 户 名:"
android:textSize="24sp"></TextView>
<EditText
android:id="@+id/edt_UserName"
android:layout_width="300dp"
android:layout_height="50dp"
android:layout_marginLeft="10dp"
android:hint="请输入用户名"
android:inputType="text"></EditText>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp">
<TextView
android:layout_width="120dp"
android:layout_height="50dp"
android:text="密 码:"
android:textSize="24sp"></TextView>
<EditText
android:id="@+id/edt_Password"
android:layout_width="300dp"
android:layout_height="50dp"
android:layout_marginLeft="10dp"
android:hint="请输入密码(6-12位)"
android:inputType="textPassword"
android:maxLength="12"></EditText>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp">
<TextView
android:layout_width="120dp"
android:layout_height="50dp"
android:text="确认密码:"
android:textSize="24sp"></TextView>
<EditText
android:id="@+id/edt_Password2"
android:layout_width="300dp"
android:layout_height="50dp"
android:layout_marginLeft="10dp"
android:hint="请确认密码(6-12位)"
android:inputType="textPassword"></EditText>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp">
<TextView
android:layout_width="120dp"
android:layout_height="50dp"
android:text="手 机 号:"
android:textSize="24sp"></TextView>
<EditText
android:id="@+id/edt_Phone"
android:layout_width="300dp"
android:layout_height="50dp"
android:layout_marginLeft="10dp"
android:hint="请输入手机号"
android:inputType="number"
android:maxLength="12"></EditText>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp">
<TextView
android:id="@+id/Sex"
android:layout_width="120dp"
android:layout_height="50dp"
android:text="性 别:"
android:textSize="24sp"></TextView>
<RadioGroup
android:id="@+id/rdg_Sex"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:orientation="horizontal">
<RadioButton
android:id="@+id/rb_Man"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="男" />
<RadioButton
android:id="@+id/rb_Woman"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="60dp"
android:text="女" />
</RadioGroup>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp">
<TextView
android:layout_width="120dp"
android:layout_height="50dp"
android:text="出 生 地:"
android:textSize="24sp" />
<TextView
android:layout_width="50dp"
android:layout_height="50dp"
android:text="省份:"
android:textSize="18dp" />
<Spinner
android:id="@+id/sp_Provinces"
android:layout_width="100dp"
android:layout_height="wrap_content"></Spinner>
<TextView
android:layout_width="50dp"
android:layout_height="50dp"
android:text="城市:"
android:textSize="18dp" />
<Spinner
android:id="@+id/sp_Cities"
android:layout_width="100dp"
android:layout_height="wrap_content"></Spinner>
</LinearLayout>
<Button
android:id="@+id/btn_Register"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_margin="70dp"
android:text="确认注册"
android:background="@drawable/button_shape"
android:textColor="#ffffff"
android:textSize="24sp"></Button>
</LinearLayout>
界面截图
修改密码界面
activity_forget_password.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#0BD1EA"
android:orientation="vertical"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="修改密码"
android:textSize="30sp"
android:gravity="center"></TextView>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="132dp"
android:layout_height="wrap_content"
android:text="账 号:"
android:textSize="24sp"
android:layout_marginLeft="10dp">
</TextView>
<EditText
android:id="@+id/edt_UserName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="请输入用户名"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp">
</EditText>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="132dp"
android:layout_height="wrap_content"
android:text="手 机 号:"
android:textSize="24sp"
android:layout_marginLeft="10dp">
</TextView>
<EditText
android:id="@+id/edt_Phone"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="请输入注册的手机号"
android:inputType="number"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp">
</EditText>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="132dp"
android:layout_height="wrap_content"
android:text="新 密 码:"
android:textSize="24sp"
android:layout_marginLeft="10dp">
</TextView>
<EditText
android:id="@+id/edt_NewPassWord"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="请输入新密码"
android:inputType="textPassword"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp">
</EditText>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="132dp"
android:layout_height="wrap_content"
android:text="确认新密码:"
android:textSize="24sp"
android:layout_marginLeft="10dp">
</TextView>
<EditText
android:id="@+id/edt_NewPassWord2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="请再次输入新密码"
android:inputType="textPassword"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp">
</EditText>
</LinearLayout>
<Button
android:id="@+id/btn_Confirm"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_margin="70dp"
android:text="确认修改"
android:background="@drawable/button_shape"
android:textColor="#ffffff"
android:textSize="24sp">
</Button>
</LinearLayout>
界面截图
这几个界面的按钮都进行的圆角的设计，可参考
button_shape.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid
android:color="#5668CA"></solid>
<corners
android:radius="25dp">
</corners>
</shape>
这些背景颜色什么的可以根据自己需要进行设计哈，然后将其放在drawable文件夹下，需要用到的时候直接调用就可以了。尽量规范命名哈。
功能实现
登录功能实现，Login.java
/**
* 账号密码登录
*/
public class Login extends AppCompatActivity
private EditText edt_Username, edt_PassWord;
private Button btn_Login, btn_Forget, btn_Register;
boolean isFlag = false;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
edt_Username = this.findViewById(R.id.edt_UserName);
edt_PassWord = this.findViewById(R.id.edt_Password);
btn_Login = this.findViewById(R.id.btn_Login);
btn_Forget = this.findViewById(R.id.btn_Forget);
btn_Register = this.findViewById(R.id.btn_Register);
//用户名
edt_Username.setOnFocusChangeListener(new View.OnFocusChangeListener()
@Override
public void onFocusChange(View v, boolean hasFocus)
if (hasFocus)
//当点击用户名输入框时，清空密码框
edt_PassWord.setText("");
else
String username = edt_Username.getText().toString();
if (username.length() < 4)
Toast.makeText(Login.this, "用户名长度必须大于4,请重新输入", Toast.LENGTH_SHORT).show();
edt_Username.setText("");
);
//密码框
edt_PassWord.setOnFocusChangeListener(new View.OnFocusChangeListener()
@Override
public void onFocusChange(View v, boolean hasFocus)
if (hasFocus)
else
String password = edt_PassWord.getText().toString();
if (password.length() < 6 || password.length() > 12)
Toast.makeText(Login.this, "密码长度必须为6-12位,请重新输入", Toast.LENGTH_LONG).show();
edt_PassWord.setText("");
);
//打开数据库
SQLiteDatabase database = openOrCreateDatabase("user.db", MODE_PRIVATE, null);
//若不存在user表，则创建user表
String createSQL = "create table IF NOT EXISTS user(username text,password text,password2 text,phone text)";
database.execSQL(createSQL);//执行创表语句
//登录事件监听
btn_Login.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
isFlag = false;
String username = edt_Username.getText().toString();
String password = edt_PassWord.getText().toString();
//判断输入是否为空，若为空，给出提示
if (username.equals("") || password.equals(""))
Toast.makeText(Login.this, "请输入账号或密码！", Toast.LENGTH_SHORT).show();
isFlag = true;
//查询账号密码，若数据库表为空，提示用户注册
Cursor cursor = database.query("user", new String[]"username,password", null, null, null, null, null);
if (cursor.getCount() == 0)
Toast.makeText(Login.this, "请先注册账号！", Toast.LENGTH_SHORT).show();
isFlag=true;
//若数据库表不为空，查看用户输入的账号密码是否与数据库表中的相匹配，若匹配，登录成功，跳转到主界面
// 否则无法登录，给出账号密码错误提示
else
while (cursor.moveToNext())
if (username.equals(cursor.getString(cursor.getColumnIndex("username"))) && password.equals(cursor.getString(cursor.getColumnIndex("password"))))
Toast.makeText(Login.this, "登录成功", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(Login.this, MainActivity.class);
startActivity(intent);
isFlag = true;
break;
if (isFlag == false)
Toast.makeText(Login.this, "账号或密码错误，请重新输入", Toast.LENGTH_SHORT).show();
);
//修改密码监听事件，点击忘记密码，跳转到修改密码界面
btn_Forget.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
Intent intent = new Intent(Login.this, Forget_Password.class);
startActivity(intent);
);
//注册监听事件，点击新用户，跳转到注册界面
btn_Register.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
Intent intent = new Intent(Login.this, Register.class);
startActivity(intent);
);
利用数据库查询账号是都存在，以及账号密码是否匹配验证，否则是登录不成功的，若没有账号就先注册账号。
注册账号功能
Register.java
/**
* 用户注册
*/
public class Register extends AppCompatActivity
private Spinner sp_Provinces;
private Spinner sp_Cities;
private RadioGroup rdg_Sex;
private RadioButton rb_Man, rb_Woman;
private Button btn_Register;
private EditText edt_UserName, edt_Password, edt_Password2, edt_Phone;
private boolean isFlag = true;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
//用户名及密码
edt_UserName = this.findViewById(R.id.edt_UserName);
edt_Password = this.findViewById(R.id.edt_Password);
edt_Password2 = this.findViewById(R.id.edt_Password2);
//手机号
edt_Phone = this.findViewById(R.id.edt_Phone);
//出生地
sp_Provinces = this.findViewById(R.id.sp_Provinces);
sp_Cities = this.findViewById(R.id.sp_Cities);
//性别选择
rdg_Sex = this.findViewById(R.id.rdg_Sex);
rb_Man = this.findViewById(R.id.rb_Man);
rb_Woman = this.findViewById(R.id.rb_Woman);
//确认注册按钮
btn_Register = this.findViewById(R.id.btn_Register);
//用户名输入框失焦处理
edt_UserName.setOnFocusChangeListener(new View.OnFocusChangeListener()
@Override
public void onFocusChange(View v, boolean hasFocus)
if (hasFocus)
isFlag = true;
else
isFlag = true;
String username = edt_UserName.getText().toString();
if (username.length() < 4)
Toast.makeText(Register.this, "用户名长度必须大于4,请重新输入", Toast.LENGTH_SHORT).show();
edt_UserName.setText("");
);
//密码输入框失焦处理
edt_Password.setOnFocusChangeListener(new View.OnFocusChangeListener()
@Override
public void onFocusChange(View v, boolean hasFocus)
if (hasFocus)
isFlag=true;
else
isFlag = true;
String password = edt_Password.getText().toString();
if (password.length() < 6 || password.length() > 12)
Toast.makeText(Register.this, "密码长度必须为6-12位,请重新输入", Toast.LENGTH_LONG).show();
edt_Password.setText("");
);
//确认密码输入框失焦处理
edt_Password2.setOnFocusChangeListener(new View.OnFocusChangeListener()
@Override
public void onFocusChange(View v, boolean hasFocus)
if (hasFocus)
isFlag=true;
else
isFlag = true;
String password = edt_Password.getText().toString();
String password2 = edt_Password2.getText().toString();
if (!(password.equals(password2)))
Toast.makeText(Register.this, "两次密码不一致,请重新输入", Toast.LENGTH_SHORT).show();
edt_Password2.setText("");
else if (password2.length() < 6 || password2.length() > 12)
Toast.makeText(Register.this, "密码长度必须为6-12位", Toast.LENGTH_LONG).show();
edt_Password2.setText("");
);
//手机号
edt_Phone.setOnFocusChangeListener(new View.OnFocusChangeListener()
@Override
public void onFocusChange(View v, boolean hasFocus)
if (hasFocus)
isFlag=true;
else
isFlag = true;
String phone = edt_Phone.getText().toString();
if (!(phone.length() == 11))
Toast.makeText(Register.this, "请输入11位手机号", Toast.LENGTH_SHORT).show();
edt_Phone.setText("");
);
//性别处理
rdg_Sex.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener()
@Override
public void onCheckedChanged(RadioGroup group, int checkedId)
switch (checkedId)
case R.id.rb_Man:
Toast.makeText(Register.this, "男", Toast.LENGTH_LONG).show();
break;
case R.id.rb_Woman:
Toast.makeText(Register.this, "女", Toast.LENGTH_LONG).show();
break;
);
//出生地处理
ArrayAdapter adapter = ArrayAdapter.createFromResource(Register.this, R.array.provinces, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_item);
sp_Provinces.setAdapter(adapter);
sp_Provinces.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener()
@Override//省市联动
public void onItemSelected(AdapterView<?> parent, View view, int position, long id)
if (position == 0)
ArrayAdapter cityAdapter = ArrayAdapter.createFromResource(Register.this, R.array.yunnan, android.R.layout.simple_spinner_item);
sp_Cities.setAdapter(cityAdapter);
else if (position == 1)
ArrayAdapter cityAdapter = ArrayAdapter.createFromResource(Register.this, R.array.shanxi, android.R.layout.simple_spinner_item);
sp_Cities.setAdapter(cityAdapter);
else if (position == 2)
ArrayAdapter cityAdapter = ArrayAdapter.createFromResource(Register.this, R.array.fj, android.R.layout.simple_spinner_item);
sp_Cities.setAdapter(cityAdapter);
else if (position == 3)
ArrayAdapter cityAdapter = ArrayAdapter.createFromResource(Register.this, R.array.guangxi, android.R.layout.simple_spinner_item);
sp_Cities.setAdapter(cityAdapter);
else if (position == 4)
ArrayAdapter cityAdapter = ArrayAdapter.createFromResource(Register.this, R.array.guangdong, android.R.layout.simple_spinner_item);
sp_Cities.setAdapter(cityAdapter);
else if (position == 5)
ArrayAdapter cityAdapter = ArrayAdapter.createFromResource(Register.this, R.array.guizhou, android.R.layout.simple_spinner_item);
sp_Cities.setAdapter(cityAdapter);
@Override
public void onNothingSelected(AdapterView<?> parent)
);
//打开数据库或创建数据库
SQLiteDatabase database = openOrCreateDatabase("user.db", MODE_PRIVATE, null);
String createSQL = "create table IF NOT EXISTS user(username text,password text,password2 text,phone text)";
database.execSQL(createSQL);
//确认注册处理
btn_Register.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
//获取用户输入信息
String username = edt_UserName.getText().toString();
String password = edt_Password.getText().toString();
String password2 = edt_Password2.getText().toString();
String phone = edt_Phone.getText().toString();
//判断用户输入是否为空，若有一个输入框为空，则给出提示信息
if (username.equals("") || password.equals("") || password2.equals("") || phone.equals(""))
Toast.makeText(Register.this, "请输入完整信息", Toast.LENGTH_SHORT).show();
isFlag = false;
//判断用户是否存在，若已有此账号，则不允许重复注册，否则允许注册
Cursor cursor = database.query("user", new String[]"username", null, null, null, null, null);
while (cursor.moveToNext())
if (username.equals(cursor.getString(cursor.getColumnIndex("username"))))
Toast.makeText(Register.this, "该账户已存在", Toast.LENGTH_SHORT).show();
isFlag = false;//
if(!password.equals(password2))
Toast.makeText(Register.this, "两次密码不一致", Toast.LENGTH_SHORT).show();
//若允许注册，则将用户输入的信息，插入到数据库表（user）中,插入成功跳转到登录界面
else if (!(phone.length() == 11))
Toast.makeText(Register.this, "请输入11位手机号！", Toast.LENGTH_SHORT).show();
else if (isFlag )
ContentValues values = new ContentValues();
//将数据放入values中
values.put("username", username);
values.put("password", password);
values.put("password2", password2);
values.put("phone", phone);
//用insert()方法将values中的数据插入到user表中
database.insert("user", null, values);
Toast.makeText(Register.this, "注册成功,请登录！", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(Register.this, Login.class);
startActivity(intent);
database.close();
);
用户注册的账号密码保存在数据库中，手机号用作验证功能，不过选择出生地的时候还没有加入数据库的哈，数据库中没有出生地属性，大家可以自行加入。
最后为忘记密码功能
Forget_Password.java
/**
* 修改密码
*/
public class Forget_Password extends AppCompatActivity
private EditText edt_UserName, edt_Phone, edt_NewPassWord, edt_NewPassWord2;
private Button btn_Confirm;
private boolean isFlag = false;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_forget_password);
//获取实例对象
edt_UserName = this.findViewById(R.id.edt_UserName);
edt_Phone = this.findViewById(R.id.edt_Phone);
edt_NewPassWord = this.findViewById(R.id.edt_NewPassWord);
edt_NewPassWord2 = this.findViewById(R.id.edt_NewPassWord2);
btn_Confirm = this.findViewById(R.id.btn_Confirm);
//用户名
edt_UserName.setOnFocusChangeListener(new View.OnFocusChangeListener()
@Override
public void onFocusChange(View v, boolean hasFocus)
if (hasFocus)
else
String username = edt_UserName.getText().toString();
if (username.length() < 4)
Toast.makeText(Forget_Password.this, "用户名长度必须大于4,请重新输入", Toast.LENGTH_SHORT).show();
edt_UserName.setText("");
);
//手机号，用作用户修改密码验证条件
edt_Phone.setOnFocusChangeListener(new View.OnFocusChangeListener()
@Override
public void onFocusChange(View v, boolean hasFocus)
if (hasFocus)
else
String phone = edt_Phone.getText().toString();
if (!(phone.length() == 11))
Toast.makeText(Forget_Password.this, "请输入11位手机号", Toast.LENGTH_SHORT).show();
edt_Phone.setText("");
);
//新密码
edt_NewPassWord.setOnFocusChangeListener(new View.OnFocusChangeListener()
@Override
public void onFocusChange(View v, boolean hasFocus)
if (hasFocus)
else
String newPassword = edt_NewPassWord.getText().toString();
if (newPassword.length() < 6 || newPassword.length() > 12)
Toast.makeText(Forget_Password.this, "密码长度必须为6-12位,请重新输入", Toast.LENGTH_LONG).show();
edt_NewPassWord.setText("");
);
//确认新密码
edt_NewPassWord2.setOnFocusChangeListener(new View.OnFocusChangeListener()
@Override
public void onFocusChange(View v, boolean hasFocus)
if (hasFocus)
else
String newPassword = edt_NewPassWord.getText().toString();
String newPassword2 = edt_NewPassWord2.getText().toString();
if (!(newPassword.equals(newPassword2)))
Toast.makeText(Forget_Password.this, "两次密码不一致,请重新输入", Toast.LENGTH_SHORT).show();
edt_NewPassWord2.setText("");
else if (newPassword2.length() < 6 || newPassword2.length() > 12)
Toast.makeText(Forget_Password.this, "密码长度必须为6-12位", Toast.LENGTH_LONG).show();
edt_NewPassWord2.setText("");
);
//确认修改密码，若用户名与此手机号匹配，则可以修改密码，否则不允许修改密码
SQLiteDatabase database = openOrCreateDatabase("user.db", MODE_PRIVATE, null);
btn_Confirm.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
String username = edt_UserName.getText().toString();
String password = edt_NewPassWord.getText().toString();
String password2 = edt_NewPassWord2.getText().toString();
String phone = edt_Phone.getText().toString();
//判断用户输入是否为空，若有一个输入框为空，则给出提示信息
if (username.equals("") || password.equals("") || password2.equals("") || phone.equals(""))
Toast.makeText(Forget_Password.this, "请输入完整信息", Toast.LENGTH_SHORT).show();
else if (!(password.equals(password2)))
Toast.makeText(Forget_Password.this, "两次密码不一致", Toast.LENGTH_SHORT).show();
else
Cursor cursor = database.query("user", new String[]"username,phone", null, null, null, null, null);
while (cursor.moveToNext())
//判断用户名和手机号是否匹配
//首先利用查询语句，查询username和phone，若手机号和用户名匹配，则允许修改密码。
if ((username.equals(cursor.getString(cursor.getColumnIndex("username")))
&& phone.equals(cursor.getString(cursor.getColumnIndex("phone")))))
ContentValues values = new ContentValues();
//将数据放入values中
String Username = edt_UserName.getText().toString();
values.put("password", password);
values.put("password2", password2);
//用update()方法将values中的数据更新对应的用户名密码
database.update("user", values, "username=?", new String[]username);
Toast.makeText(Forget_Password.this, "修改密码成功,请登录！", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(Forget_Password.this, Login.class);
isFlag = true;
startActivity(intent);
database.close();
break;
isFlag = false;
if (isFlag == false)
Toast.makeText(Forget_Password.this, "用户名与手机号不匹配，修改失败", Toast.LENGTH_SHORT).show();
);
手机号为用户注册时的手机号，暂时用手机号作为验证功能，用户的账号和手机号与数据库的匹配就允许修改密码。
地名资源文件
放在res文件夹的values的string.xml文件
<resources>
<string name="app_name">Words</string>
<string-array name="provinces">
<item>云南省</item>
<item>山西省</item>
<item>福建省</item>
<item>广西壮族自治区</item>
<item>广东省</item>
<item>贵州省</item>
</string-array>
<string-array name="yunnan">
<item>昆明市</item>
<item>曲靖市</item>
<item>玉溪市</item>
<item>昭通市</item>
<item>保山市</item>
<item>丽江市</item>
</string-array>
<string-array name="guangxi">
<item>南宁市</item>
<item>桂林市</item>
<item>柳州市</item>
<item>北海市</item>
<item>钦州市</item>
<item>玉林市</item>
<item>百色市</item>
<item>河池市</item>
<item>防城港市</item>
</string-array>
<string-array name="shanxi">
<item>大同市</item>
<item>临汾市</item>
<item>太原市</item>
<item>阳泉市</item>
<item>长治市</item>
<item>晋城市</item>
<item>朔州市</item>
<item>晋中市</item>
<item>运城市</item>
</string-array>
<string-array name="fj">
<item>福州市</item>
<item>厦门市</item>
<item>泉州市</item>
<item>漳州市</item>
<item>福清市</item>
<item>莆田市</item>
<item>宁德市</item>
</string-array>
<string-array name="guangdong">
<item>广州市</item>
<item>深圳市</item>
<item>中山市</item>
<item>佛山市</item>
<item>惠州市</item>
<item>珠海市</item>
<item>汕头市</item>
</string-array>
<string-array name="guizhou">
<item>贵阳市</item>
<item>遵义市</item>
<item>安顺市</item>
<item>毕节市</item>
<item>铜仁市</item>
<item>六盘水市</item>
</string-array>
</resources>
大家有什么问题以及建议欢迎讨论留言。
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