Android开发实战——登录注册页面（附源码）

编程语言 2023-04-10 10:22:13 阅读次数: 0 
LoginActivity.java
package com.example.login;

import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import com.example.angel.GuideActivity;
import com.example.angel.R;

import org.jetbrains.annotations.Nullable;

public class LoginActivity extends AppCompatActivity {

    private static final String TAG = "tag";
    public static final int REQUEST_CODE_REGISTER = 1;
    private Button btnLogin;
    private EditText etAccount,etPassword;
    private CheckBox cbRemember,cbAutoLogin;

    private String userName = "fxjzzyo";
    private String pass = "123";

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

        initView();
        initData();

        btnLogin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String account = etAccount.getText().toString();
                String password = etPassword.getText().toString();

                Log.d(TAG, "onClick: -------------" + account);
                Log.d(TAG, "password: -------------" + password);
                if (TextUtils.isEmpty(userName)) {
                    Toast.makeText(LoginActivity.this, "还没有注册账号！", Toast.LENGTH_LONG).show();
                    return;
                }

                if (TextUtils.equals(account, userName)) {
                    if (TextUtils.equals(password, pass)) {

                        Toast.makeText(LoginActivity.this, "恭喜你，登录成功！", Toast.LENGTH_LONG).show();
                        if (cbRemember.isChecked()) {
                            SharedPreferences spf = getSharedPreferences("spfRecord", MODE_PRIVATE);
                            SharedPreferences.Editor edit = spf.edit();
                            edit.putString("account", account);
                            edit.putString("password", password);
                            edit.putBoolean("isRemember", true);
                            if (cbAutoLogin.isChecked()) {
                                edit.putBoolean("isLogin", true);
                            }else {
                                edit.putBoolean("isLogin", false);
                            }
                            edit.apply();

                        }else {
                            SharedPreferences spf = getSharedPreferences("spfRecord", MODE_PRIVATE);
                            SharedPreferences.Editor edit = spf.edit();
                            edit.putBoolean("isRemember", false);
                            edit.apply();
                        }

                        Intent intent = new Intent(LoginActivity.this, GuideActivity.class);
                        intent.putExtra("account", account);
                        startActivity(intent);
                        LoginActivity.this.finish();

                    } else {
                        Toast.makeText(LoginActivity.this, "密码错误！", Toast.LENGTH_LONG).show();
                    }
                } else {
                    Toast.makeText(LoginActivity.this, "用户名错误！", Toast.LENGTH_LONG).show();
                }

            }
        });

        cbAutoLogin.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if (isChecked) {
                    cbRemember.setChecked(true);
                }
            }
        });

        cbRemember.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if (!isChecked) {
                    cbAutoLogin.setChecked(false);
                }
            }
        });

    }



    private void initView() {
        btnLogin = findViewById(R.id.btn_login);
        etAccount = findViewById(R.id.et_account);
        etPassword = findViewById(R.id.et_password);
        cbRemember = findViewById(R.id.cb_remember);
        cbAutoLogin = findViewById(R.id.cb_auto_login);

    }

    private void initData() {
        SharedPreferences spf = getSharedPreferences("spfRecord", MODE_PRIVATE);
        boolean isRemember = spf.getBoolean("isRemember", false);
        boolean isLogin = spf.getBoolean("isLogin", false);
        String account = spf.getString("account", "");
        String password = spf.getString("password", "");


        if (isLogin) {
            Intent intent = new Intent(LoginActivity.this, GuideActivity.class);
            intent.putExtra("account", account);
            startActivity(intent);
            LoginActivity.this.finish();
        }


        userName = account;
        pass = password;

        if (isRemember) {
            etAccount.setText(account);
            etPassword.setText(password);
            cbRemember.setChecked(true);
        }


    }

    public void toRegister(View view) {
        Intent intent = new Intent(this, RegisterActivity.class);

        startActivityForResult(intent, REQUEST_CODE_REGISTER);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == REQUEST_CODE_REGISTER && resultCode == RegisterActivity.RESULT_CODE_REGISTER && data != null) {
            Bundle extras = data.getExtras();

            String account = extras.getString("account", "");
            String password = extras.getString("password", "");

            etAccount.setText(account);
            etPassword.setText(password);

            userName = account;
            pass = password;
        }
    }
}
RegisterActivity.Java
package com.example.login;

import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import com.example.angel.R;

public class RegisterActivity extends AppCompatActivity implements View.OnClickListener {

    public static final int RESULT_CODE_REGISTER = 0;
    private Button btnRegister;
    private EditText etAccount,etPass,etPassConfirm;
    private CheckBox cbAgree;

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

        etAccount = findViewById(R.id.et_account);
        etPass = findViewById(R.id.et_password);
        etPassConfirm = findViewById(R.id.et_password_confirm);
        cbAgree = findViewById(R.id.cb_agree);
        btnRegister = findViewById(R.id.btn_register);

        btnRegister.setOnClickListener(this);

    }

    @Override
    public void onClick(View v) {
        String name = etAccount.getText().toString();
        String pass = etPass.getText().toString();
        String passConfirm = etPassConfirm.getText().toString();

        if (TextUtils.isEmpty(name)) {
            Toast.makeText(RegisterActivity.this, "用户名不能为空", Toast.LENGTH_LONG).show();

            return;
        }

        if (TextUtils.isEmpty(pass)) {
            Toast.makeText(RegisterActivity.this, "密码不能为空", Toast.LENGTH_LONG).show();
            return;
        }

        if (!TextUtils.equals(pass,passConfirm)) {
            Toast.makeText(RegisterActivity.this, "密码不一致", Toast.LENGTH_LONG).show();
            return;
        }

        if (!cbAgree.isChecked()) {
            Toast.makeText(RegisterActivity.this, "请同意用户协议", Toast.LENGTH_LONG).show();
            return;
        }

        // 存储注册的用户名 密码
        SharedPreferences spf = getSharedPreferences("spfRecord", MODE_PRIVATE);
        SharedPreferences.Editor edit = spf.edit();
        edit.putString("account", name);
        edit.putString("password", pass);
        edit.apply();

        // 数据回传
        Intent intent = new Intent();
        Bundle bundle = new Bundle();
        bundle.putString("account",name);
        bundle.putString("password",pass);
        intent.putExtras(bundle);
        setResult(RESULT_CODE_REGISTER,intent);


        Toast.makeText(RegisterActivity.this, "注册成功！", Toast.LENGTH_LONG).show();
        this.finish();
    }
}

ic_login_background.png

 activity_login.xml

<?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"
    tools:context="com.example.login.LoginActivity"
    android:background="@drawable/ic_login_background">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_marginLeft="20dp"
        android:layout_marginRight="20dp"
        android:layout_marginTop="40dp"
        android:gravity="center_vertical"
        >
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="账号:"
            android:textSize="25sp"

            />

        <EditText
            android:id="@+id/et_account"
            android:layout_width="match_parent"
            android:hint="请输入用户名或手机号"
            android:layout_marginLeft="10dp"
            style="@style/MyEditStyle"
            android:inputType="text"
            />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_marginLeft="20dp"
        android:layout_marginRight="20dp"
        android:layout_marginTop="20dp"
        android:gravity="center_vertical"
        >
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="密码:"
            android:textSize="25sp"

            />

        <EditText
            android:id="@+id/et_password"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:hint="请输入密码"
            android:textSize="18sp"
            android:layout_marginLeft="10dp"
            android:paddingLeft="5dp"
            android:inputType="numberPassword"
            android:background="@drawable/edit_text_bg"
            />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:gravity="center"
        android:layout_marginTop="20dp"
        android:layout_marginLeft="20dp"
        android:layout_marginRight="20dp"
        >

        <CheckBox
            android:id="@+id/cb_remember"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="记住密码"
            />

        <CheckBox
            android:id="@+id/cb_auto_login"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="40dp"
            android:text="自动登录"
            android:visibility="visible" />

    </LinearLayout>

    <Button
        android:id="@+id/btn_login"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="登录"
        style="@style/MyBtnStyle"
        />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@color/colorPrimary"
        android:text="还没有账号？"
        android:layout_gravity="right"
        android:layout_marginRight="20dp"
        android:layout_marginTop="10dp"
        android:onClick="toRegister"
        />



</LinearLayout>

activity_register.xml

<?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"
    tools:context="com.example.login.RegisterActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="20dp"
        android:layout_marginTop="40dp"
        android:layout_marginRight="20dp"
        android:gravity="center_vertical"
        android:orientation="horizontal">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="账&#12288;&#12288;号:"
            android:textSize="25sp" />

        <EditText
            android:id="@+id/et_account"
            style="@style/MyEditStyle"
            android:layout_width="match_parent"
            android:layout_marginLeft="10dp"
            android:hint="请输入用户名或手机号"
            android:inputType="text" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="20dp"
        android:layout_marginTop="20dp"
        android:layout_marginRight="20dp"
        android:gravity="center_vertical"
        android:orientation="horizontal">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="密&#12288;&#12288;码:"
            android:textSize="25sp"
            />

        <EditText
            android:id="@+id/et_password"
            style="@style/MyEditStyle"
            android:layout_width="match_parent"
            android:layout_marginLeft="10dp"
            android:hint="请输入密码"
            android:inputType="numberPassword" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="20dp"
        android:layout_marginTop="20dp"
        android:layout_marginRight="20dp"
        android:gravity="center_vertical"
        android:orientation="horizontal">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="确认密码:"
            android:textSize="25sp"

            />

        <EditText
            android:id="@+id/et_password_confirm"
            style="@style/MyEditStyle"
            android:layout_width="match_parent"
            android:layout_marginLeft="10dp"
            android:hint="再次输入密码"
            android:inputType="numberPassword" />
    </LinearLayout>

    <Button
        android:id="@+id/btn_register"
        style="@style/MyBtnStyle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="注册" />

    <CheckBox
        android:id="@+id/cb_agree"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="left"
        android:layout_marginLeft="20dp"
        android:layout_marginTop="10dp"
        android:text="勾选即同意用户协议"
        android:textColor="@color/colorPrimary" />


</LinearLayout>

效果图：

 

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