Android开发实战——登录注册+短信登录/手机号登录+忘记密码（附源码）

编程语言 2023-04-10 10:22:07 阅读次数: 0 
LoginMainActivity.java
package com.example.chapter03;

import androidx.activity.result.ActivityResult;
import androidx.activity.result.ActivityResultCallback;
import androidx.activity.result.ActivityResultLauncher;
import androidx.activity.result.contract.ActivityResultContracts;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.ViewUtils;

import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.Toast;

import java.util.Random;

public class LoginMainActivity extends AppCompatActivity implements RadioGroup.OnCheckedChangeListener, View.OnClickListener {

    private TextView tv_password;
    private EditText et_password;
    private Button btn_forget;
    private CheckBox ck_remember;
    private EditText et_phone;
    private RadioButton rb_password;
    private RadioButton rb_verifycode;
    private ActivityResultLauncher<Intent> register;
    private Button btn_login;
    private String mPassword = "123456";

    @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_phone = findViewById(R.id.et_phone);
        et_password = findViewById(R.id.et_password);
        btn_forget = findViewById(R.id.btn_forget);
        ck_remember = findViewById(R.id.ck_remember);
        rb_password = findViewById(R.id.rb_password);
        rb_verifycode = findViewById(R.id.rb_verifycode);
        btn_login = findViewById(R.id.btn_login);

        // 给rg_login设置单选监听器
        rb_login.setOnCheckedChangeListener(this);
        // 给et_phone添加文本变更监视器
        et_phone.addTextChangedListener(new HideTextWatcher(et_phone,11));
        // 给et_password添加文本变更监视器
        et_password.addTextChangedListener(new HideTextWatcher(et_password,6));
        btn_forget.setOnClickListener(this);

        // 登录页面
        btn_login.setOnClickListener(this);



        register = registerForActivityResult(new ActivityResultContracts.StartActivityForResult(), new ActivityResultCallback<ActivityResult>() {
            @Override
            public void onActivityResult(ActivityResult result) {

            }
        });

    }


    @Override
    public void onCheckedChanged(RadioGroup radioGroup, 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;


            // 选择了验证码登录
            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;

        }
    }

    @Override
    public void onClick(View view) {
        String phone = et_phone.getText().toString();
        if (phone.length() < 11){
            Toast.makeText(this, "请输入正确的手机号", Toast.LENGTH_SHORT).show();
            return;
        }
        switch (view.getId()){
            case R.id.btn_forget:

                if(rb_password.isChecked()){
                    Intent intent = new Intent(this,LoginForgetActivity.class);
                    intent.putExtra("phone",phone);
                    register.launch(intent);

                }else if(rb_verifycode.isChecked()){
                    // 生成六位随机数字的验证码
                    String verifyCode = String.format("%06d",new Random().nextInt(999999));
                    // 以下弹出提醒对话框，提示用户记住六位验证码数字
                    AlertDialog.Builder builder = new AlertDialog.Builder(this);
                    builder.setTitle("请记住验证码");
                    builder.setMessage("手机号"+phone+",本次验证码是："+verifyCode+",请输入验证码");
                    builder.setPositiveButton("好的",null);
                    AlertDialog dialog = builder.create();
                    dialog.show();

                }
                break;

            case R.id.btn_login:
                //密码校验方式
                if (rb_password.isChecked()) {
                    if (!mPassword.equals(et_password.getText().toString())) {
                        Toast.makeText(this, "请输入正确的密码", Toast.LENGTH_SHORT).show();
                        return;
                    }
                    //提示用户登录成功
                    loginSuccess();

                }else if(rb_verifycode.isChecked()){
                    //验证码方式的校验

            }
                break;
        }

    }

    // 校验通过，登录成功
    private void loginSuccess() {
        String desc = String.format("%s登录成功",et_phone.getText().toString());
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("登录成功");
        builder.setMessage(desc);
        builder.setPositiveButton("确定返回", (dialogInterface, i) -> {
            // 结束2当前的活动界面
            finish();
        });
        builder.setNegativeButton("我再看看",null);
        AlertDialog dialog =  builder.create();
        dialog.show();
    }

    private class HideTextWatcher implements TextWatcher {
        private EditText mView;
        private int mMaxLength;
        public HideTextWatcher(EditText v, int maxLength) {
            this.mView = v;
            this.mMaxLength = maxLength;
        }

        @Override
        public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

        }

        @Override
        public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {

        }

        @Override
        public void afterTextChanged(Editable s) {
            if(s.toString().length()==mMaxLength){

            }

        }
    }
}
LoginForgetActivity.java
package com.example.chapter03;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

public class LoginForgetActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login_forget);
    }
}
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
    tools:context=".LoginForgetActivity">

</androidx.constraintlayout.widget.ConstraintLayout>
<?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:background="@drawable/ic_background"
    android:orientation="vertical"
    tools:context=".LoginMainActivity">

    <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:checked="true"
            android:text="@string/login_by_password"
            android:textSize="@dimen/common_font_size"
            android:textColor="@color/black">
        </RadioButton>

        <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"></RadioButton>
    </RadioGroup>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="@dimen/item_layout_height"
        android:orientation="horizontal">

        <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">
        </TextView>

        <EditText
            android:id="@+id/et_phone"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:layout_marginTop="5dp"
            android:layout_marginBottom="5dp"
            android:background="@color/white"
            android:hint="@string/input_phone_number"
            android:inputType="number"
            android:maxLength="11"
            android:textColor="@color/black"
            android:textColorHighlight="@color/grey"
            android:textSize="@dimen/common_font_size">


        </EditText>

    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="@dimen/item_layout_height"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/tv_password"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:gravity="center"
            android:text="@string/login_password"
            android:textColor="@color/black"
            android:textSize="@dimen/common_font_size">
        </TextView>

        <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:background="@color/white"
                android:hint="@string/input_password"
                android:inputType="numberPassword"
                android:maxLength="11"
                android:textColor="@color/black"
                android:textColorHighlight="@color/grey"
                android:textSize="@dimen/common_font_size">

            </EditText>

            <Button
                android:id="@+id/btn_forget"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:text="@string/forget_password"
                android:layout_alignParentEnd="true"
                android:textColor="@color/grey"
                android:textSize="@dimen/common_font_size"
                >
            </Button>

        </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">
    </CheckBox>


    <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/common_font_size"
        >
    </Button>


</LinearLayout>

效果：

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