Android登录注册功能 数据库SQLite验证

本文实例为大家分享了Android登录注册功能的具体代码，供大家参考，具体内容如下

展示效果

代码区

MainActivity（登录方法）

public class MainActivity extends AppCompatActivity {

 @BindView(R.id.editText)
 EditText editText;
 @BindView(R.id.editText2)
 EditText editText2;
 @BindView(R.id.button)
 Button button;
 @BindView(R.id.button2)
 Button button2;
 @BindView(R.id.activity_main)
 RelativeLayout activityMain;
 public static final String REGEX_PASSWORD = "^[a-zA-Z0-9]{6,16}$";//验证密码是否有特殊符号或长度不满6位
 private SQLiteDatabase w;
 private SQLiteDatabase r;
 private Mysqlist mys;
 private List mdata;
 private String name;
 private String pass;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 ButterKnife.bind(this);
 mys = new Mysqlist(this, "zhu_c", null, 1);//使用halper创建数据库
 r=mys.getReadableDatabase();
 w=mys.getWritableDatabase();
 mdata=new ArrayList();
 Cursor query = r.rawQuery("select * from user_mo", null);
 while(query.moveTonext()){
  int index1 = query.getColumnIndex("name");
  int index2 = query.getColumnIndex("pass");
  name = query.getString(index1);
  pass = query.getString(index2);
  mdata.add(new St(0, name, pass));
 }
 }

 @onClick({R.id.button, R.id.button2})
 public void onViewClicked(View view) {
 switch (view.getId()) {
  case R.id.button:
  String name1 = editText.getText().toString().trim();
  String pass1 = editText2.getText().toString().trim();
  if (name1.equals(name)&&pass1.equals(pass)){

   Toast.makeText(this,"登录成功",Toast.LENGTH_SHORT).show();
   Intent intent = new Intent(this, UserActivity.class);
   startActivity(intent);
  }else{
   Toast.makeText(this,"账号与密码输入不正确",Toast.LENGTH_SHORT).show();
  }
  break;
  case R.id.button2:
  Intent intent1 = new Intent(this, ZhuActivity.class);
  startActivity(intent1);
  break;
 }
 }
}

Mysqlist(创建数据库)

public class Mysqlist extends SQLiteOpenHelper {


 private String sql="create table if not exists user_mo(_id Integer primary key autoincrement,name varchar(30) not null,pass varchar(50) not null)";

 public Mysqlist(Context context, String name, SQLiteDatabase.CursorFactory factory, int version) {
 super(context, name, factory, version);
 }

 @Override
 public void onCreate(SQLiteDatabase db) {
 db.execSQL(sql);

 }

 @Override
 public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
 // TODO Auto-generated method stub

 }
}

ZhuActivity(注册方法)

public class ZhuActivity extends AppCompatActivity {

 @BindView(R.id.editText3)
 EditText editText3;
 @BindView(R.id.editText4)
 EditText editText4;
 @BindView(R.id.button3)
 Button button3;
 @BindView(R.id.activity_zhu)
 RelativeLayout activityZhu;
 public static final String REGEX_PASSWORD = "^[a-zA-Z0-9]{6,16}$";//验证密码是否有特殊符号或长度不满6位
 private SQLiteDatabase sdb;
 private Mysqlist mys;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_zhu);
 ButterKnife.bind(this);
 mys = new Mysqlist(this, "zhu_c", null, 1);//使用halper创建数据库
 sdb=mys.getWritableDatabase();
 }

 @onClick(R.id.button3)
 public void onViewClicked() {
 //获得账号密码
 String name = editText3.getText().toString().trim();
 String pass = editText4.getText().toString().trim();
 if (name == null || "".equals(name) || pass == null || "".equals(pass)) {
  Toast.makeText(this, "账号与密码不能为空", Toast.LENGTH_SHORT).show();
 } else {
  String number = editText3.getText().toString();
  boolean judge = isMobile(number);
  String pa = editText4.getText().toString();
  boolean judge1 = isPassword(pa);
  if (judge == true && judge1 == true) {
  Toast.makeText(this, "注册成功", Toast.LENGTH_SHORT).show();
  sdb.execSQL("insert into user_mo(name,pass)values('"+name+"','"+pass+"')");
  Intent intent = new Intent(this, MainActivity.class);
  startActivity(intent);//启动跳转
  } else {
  Toast.makeText(this, "手机号码不法与密码不能有特殊符号", Toast.LENGTH_SHORT).show();
  }
 }
 }
 
 public static boolean isPassword(String password) {
 return Pattern.matches(REGEX_PASSWORD, password);
 }
 

 public static boolean isMobile(String number) {
 
 String num = "[1][358]\d{9}";//"[1]"代表第1位为数字1，"[358]"代表第二位可以为3、5、8中的一个，"\d{9}"代表后面是可以是0～9的数字，有9位。
 if (TextUtils.isEmpty(number)) {
  return false;
 } else {
  //matches():字符串是否在给定的正则表达式匹配
  return number.matches(num);
 }
 }
}

St(工具类)

public class St {
 private int id;
 private String name;
 private String pass;

 public St(int id, String name, String pass) {
 this.id = id;
 this.name = name;
 this.pass = pass;
 }

 public int getId() {
 return id;
 }

 public void setId(int id) {
 this.id = id;
 }

 public String getName() {
 return name;
 }

 public void setName(String name) {
 this.name = name;
 }

 public String getPass() {
 return pass;
 }

 public void setPass(String pass) {
 this.pass = pass;
 }

 @Override
 public String toString() {
 return "St{" +
  "id=" + id +
  ", name='" + name + ''' +
  ", pass='" + pass + ''' +
  '}';
 }
}

activity_zhu(注册布局)

activity_main(登录布局)

谢谢观看，小编祝大家生活愉快！

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