android登录注册页面

以下是一个简单的Android登录注册页面的示例代码：

activity_login.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="16dp">

    <EditText
        android:id="@+id/edit_text_username"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Username"/>

    <EditText
        android:id="@+id/edit_text_password"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Password"
        android:inputType="textPassword"/>

    <Button
        android:id="@+id/button_login"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Login"/>

    <TextView
        android:id="@+id/text_view_register"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Don't have an account? Register here."/>

</LinearLayout>

activity_register.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="16dp">

    <EditText
        android:id="@+id/edit_text_username"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Username"/>

    <EditText
        android:id="@+id/edit_text_password"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Password"
        android:inputType="textPassword"/>

    <EditText
        android:id="@+id/edit_text_confirm_password"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Confirm Password"
        android:inputType="textPassword"/>

    <Button
        android:id="@+id/button_register"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Register"/>

</LinearLayout>

LoginActivity.java

public class LoginActivity extends AppCompatActivity {

    private EditText mUsernameEditText;
    private EditText mPasswordEditText;
    private Button mLoginButton;
    private TextView mRegisterTextView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);

        mUsernameEditText = findViewById(R.id.edit_text_username);
        mPasswordEditText = findViewById(R.id.edit_text_password);
        mLoginButton = findViewById(R.id.button_login);
        mRegisterTextView = findViewById(R.id.text_view_register);

        mLoginButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                // TODO: Implement login logic
            }
        });

        mRegisterTextView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                startActivity(new Intent(LoginActivity.this, RegisterActivity.class));
            }
        });
    }
}

RegisterActivity.java

public class RegisterActivity extends AppCompatActivity {

    private EditText mUsernameEditText;
    private EditText mPasswordEditText;
    private EditText mConfirmPasswordEditText;
    private Button mRegisterButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);

        mUsernameEditText = findViewById(R.id.edit_text_username);
        mPasswordEditText = findViewById(R.id.edit_text_password);
        mConfirmPasswordEditText = findViewById(R.id.edit_text_confirm_password);
        mRegisterButton = findViewById(R.id.button_register);

        mRegisterButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                // TODO: Implement registration logic
            }
        });
    }
}

这些代码创建了一个简单的登录和注册界面，当用户点击“登录”按钮时，可以在LoginActivity中执行登录逻辑，当用户点击“注册”按钮时，可以在RegisterActivity中执行注册逻辑。