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<St> 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<St>(); 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(); } } } /** * 校验密码 * @param password * @return 校验通过返回true，否则返回false */ public static boolean isPassword(String password) { return Pattern.matches(REGEX_PASSWORD, password); } /** * 验证手机格式 */ 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)

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_zhu" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="sizu.wxrkaoqianmomi.ZhuActivity"> <EditText android:layout_width="wrap_content" android:layout_height="wrap_content" android:inputType="textPersonName" android:hint="输入手机号" android:gravity="center" android:ems="10" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" android:layout_marginTop="57dp" android:id="@+id/editText3" /> <EditText android:layout_width="wrap_content" android:layout_height="wrap_content" android:inputType="textPersonName" android:hint="输入密码" android:gravity="center" android:ems="10" android:layout_below="@+id/editText3" android:layout_alignLeft="@+id/editText3" android:layout_alignStart="@+id/editText3" android:layout_marginTop="44dp" android:id="@+id/editText4" /> <Button android:text="注册" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/editText4" android:layout_centerHorizontal="true" android:layout_marginTop="88dp" android:id="@+id/button3" /></RelativeLayout>

activity_main(登录布局)

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="sizu.wxrkaoqianmomi.MainActivity"> <EditText android:layout_width="wrap_content" android:layout_height="wrap_content" android:inputType="textPersonName" android:hint="输入手机号" android:gravity="center" android:ems="10" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" android:layout_marginTop="33dp" android:id="@+id/editText" /> <EditText android:layout_width="wrap_content" android:layout_height="wrap_content" android:inputType="textPassword" android:ems="10" android:hint="输入密码" android:gravity="center" android:layout_marginTop="24dp" android:id="@+id/editText2" android:layout_below="@+id/editText" android:layout_alignLeft="@+id/editText" android:layout_alignStart="@+id/editText" /> <Button android:text="登录" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/editText2" android:layout_alignLeft="@+id/editText2" android:layout_alignStart="@+id/editText2" android:layout_marginTop="85dp" android:id="@+id/button" /> <Button android:text="注册" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignTop="@+id/button" android:layout_alignRight="@+id/editText2" android:layout_alignEnd="@+id/editText2" android:id="@+id/button2" /></RelativeLayout>

谢谢观看，小编祝大家生活愉快！

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