前言：
登录页面设计（无跳转版本），不同的单选框，不同的界面效果，适合新手学习，简单的安卓布局
效果展示：
视频演示
核心代码：
活动页面：
package com.example.test05;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.RadioGroup;
import android.widget.TextView;
public class LoginMainActivity extends AppCompatActivity implements RadioGroup.OnCheckedChangeListener {
private TextView tv_password;
private EditText et_password;
private Button btn_forget;
private CheckBox ck_remember;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login_main);
RadioGroup rb_login = findViewById(R.id.rg_login);
tv_password = findViewById(R.id.tv_password);
et_password = findViewById(R.id.et_password);
btn_forget = findViewById(R.id.btn_forget);
ck_remember = findViewById(R.id.ck_remember);
rb_login.setOnCheckedChangeListener(this);
}
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
switch (checkedId){
case R.id.rb_password:
tv_password.setText(getString(R.string.login_password));
et_password.setHint(getString(R.string.input_password));
btn_forget.setText(getString(R.string.forget_password));
ck_remember.setVisibility(View.VISIBLE);
break;
case R.id.rb_verifycode:
tv_password.setText(getString(R.string.verifycode));
et_password.setHint(getString(R.string.input_verifycode));
btn_forget.setText(getString(R.string.get_verifycode));
ck_remember.setVisibility(View.GONE);
break;
}
}
}
布局文件：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RadioGroup
android:id="@+id/rg_login"
android:layout_width="match_parent"
android:layout_height="@dimen/item_layout_height"
android:orientation="horizontal">
<RadioButton
android:id="@+id/rb_password"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="@string/login_by_password"
android:textColor="@color/black"
android:textSize="@dimen/common_font_size"/>
<RadioButton
android:id="@+id/rb_verifycode"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="@string/login_by_verifycode"
android:textColor="@color/black"
android:textSize="@dimen/common_font_size" />
</RadioGroup>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="@dimen/item_layout_height">
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center"
android:text="@string/phone_number"
android:textColor="@color/black"
android:textSize="@dimen/common_font_size"/>
<EditText
android:id="@+id/et_phone"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="match_parent"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:hint="@string/input_phone_number"
android:inputType="number"
android:maxLength="11"
android:textColor="@color/black"
android:textColorHint="@color/grey"
android:textSize="@dimen/common_font_size"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="@dimen/item_layout_height">
<TextView
android:id="@+id/tv_password"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center"
android:text="@string/login_by_password"
android:textColor="@color/black"
android:textSize="@dimen/common_font_size"/>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1">
<EditText
android:id="@+id/et_password"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:layout_weight="1"
android:hint="@string/input_password"
android:inputType="numberPassword"
android:maxLength="11"
android:textColor="@color/black"
android:textColorHint="@color/grey"
android:textSize="@dimen/common_font_size" />
<Button
android:id="@+id/btn_forget"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentEnd="true"
android:text="@string/forget_password"
android:layout_alignParentRight="true"
android:textColor="@color/black"
android:textColorHint="@color/grey"
android:textSize="@dimen/common_font_size"/>
</RelativeLayout>
</LinearLayout>
<CheckBox
android:id="@+id/ck_remember"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/remember_password"
android:textColor="@color/black"
android:textSize="@dimen/common_font_size"/>
<Button
android:id="@+id/btn_login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/login"
android:textColor="@color/black"
android:textSize="@dimen/button_font_size"/>
</LinearLayout>
资源文件：
<resources>
<string name="app_name">Test05</string>
<string name="login_by_password">密码登录</string>
<string name="login_by_verifycode">验证码登录</string>
<string name="phone_number">手机号码</string>
<string name="input_phone_number">请输入手机号码</string>
<string name="login_password">登录密码</string>
<string name="input_password">请输入密码</string>
<string name="forget_password">忘记密码</string>
<string name="remember_password">记住密码</string>
<string name="login">登   录</string>
<string name="input_new_password">输入新密码</string>
<string name="input_new_password_hint">请输入新密码</string>
<string name="confirm_new_password">确认新密码</string>
<string name="input_new_password_again">请再次输入新密码</string>
<string name="verifycode">  验证码：</string>
<string name="input_verifycode">请输入验证码</string>
<string name="get_verifycode">获取验证码</string>
<string name="done">确   定</string>
</resources>