Firebase signInWithEmailAndPassword登录报错求助：凭证异常

遇到的错误 #

Initial task failed for action RecaptchaAction(action=signInWithPassword)with exception - The supplied auth credential is incorrect, malformed or has expired.

相关代码文件 #

LoginActivity.kt

package com.example.cafe

import android.annotation.SuppressLint
import android.content.Intent
import android.os.Bundle
import android.widget.Button
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import com.google.android.material.textfield.TextInputEditText
import com.google.firebase.Firebase
import com.google.firebase.auth.FirebaseAuth
import com.google.firebase.auth.auth


class LoginActivity : AppCompatActivity() {
    private lateinit var auth: FirebaseAuth

    @SuppressLint("MissingInflatedId")
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_login)
        val email = findViewById<TextInputEditText>(R.id.loginEmail)
        val password = findViewById<TextInputEditText>(R.id.loginpassword)
        val loginBtn = findViewById<Button>(R.id.signinBtn)
        auth = Firebase.auth

        loginBtn.setOnClickListener {
            val mail = email.text.toString()
            val pass = password.text.toString()

            if(mail.isNotEmpty() && pass.isNotEmpty()) {
                auth.signInWithEmailAndPassword(mail, pass).addOnCompleteListener {
                    if(it.isSuccessful){
                       val intent = Intent(this,MainActivity::class.java)
                        startActivity(intent)
                    }else{
                        Toast.makeText(this,it.exception.toString(),Toast.LENGTH_LONG).show()
                    }
                }
            }  else{
                Toast.makeText(this,"Fields cannot be empty",Toast.LENGTH_LONG).show()
            }
        }
    }

}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.Cafe"
        tools:targetApi="31">
        <activity
            android:name=".LoginActivity"
            android:exported="false" />
        <activity
            android:name=".firstpage"
            android:exported="false" />
        <activity
            android:name=".splashscreen"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".orderActivity"
            android:exported="false" />
        <activity
            android:name=".MainActivity"
            android:exported="false" />
    </application>

</manifest>

build.gradle(Module)

plugins {
    id("com.android.application")
    id("org.jetbrains.kotlin.android")
    id("com.google.gms.google-services")
}

android {
    namespace = "com.example.cafe"
    compileSdk = 34
    defaultConfig {
        applicationId = "com.example.cafe"
        minSdk = 24
        targetSdk = 34
        versionCode = 1
        versionName = "1.0"

        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
    }


    buildTypes {
        release {
            isMinifyEnabled = false
            proguardFiles(
                getDefaultProguardFile("proguard-android-optimize.txt"),
                "proguard-rules.pro"
            )
        }
    }
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_1_8
        targetCompatibility = JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = "1.8"
    }
}

dependencies {

    implementation("androidx.core:core-ktx:1.12.0")
    implementation("androidx.appcompat:appcompat:1.6.1")
    implementation("com.google.android.material:material:1.11.0")
    implementation("androidx.constraintlayout:constraintlayout:2.1.4")
    implementation("com.google.firebase:firebase-database:20.3.0")
    testImplementation("junit:junit:4.13.2")
    androidTestImplementation("androidx.test.ext:junit:1.1.5")
    androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
    implementation ("com.google.firebase:firebase-core:21.1.1")
    implementation ("com.google.firebase:firebase-auth:22.3.1")
    implementation(platform("com.google.firebase:firebase-bom:32.7.2"))
    implementation("com.google.firebase:firebase-auth")


}

错误原因及解决方案 #

1. 账号凭证本身错误 #

• 核对输入的邮箱、密码与Firebase控制台创建的账号完全一致，注意大小写、空格、特殊字符差异。
• 若为测试账号，可直接在Firebase Auth控制台重置密码或新建测试账号验证。

2. Firebase Auth依赖冲突 #

你的gradle文件同时声明了指定版本的firebase-auth和BOM管理的版本，会导致依赖冲突：

implementation ("com.google.firebase:firebase-auth:22.3.1")
implementation(platform("com.google.firebase:firebase-bom:32.7.2"))
implementation("com.google.firebase:firebase-auth")

解决： 删除单独指定版本的firebase-auth依赖，仅保留BOM和无版本号的依赖：

// 移除该行
// implementation ("com.google.firebase:firebase-auth:22.3.1")
implementation(platform("com.google.firebase:firebase-bom:32.7.2"))
implementation("com.google.firebase:firebase-auth")

3. Recaptcha安全验证问题 #

错误提及RecaptchaAction，说明安全验证未通过：

• 确保设备网络正常，可访问Firebase相关服务。
• 检查Firebase控制台，确认项目已启用Email/Password登录方式（路径：Authentication > Sign-in method）。
• 模拟器测试异常时，切换至真实设备验证，部分模拟器无法正常加载Recaptcha组件。

4. 应用配置问题 #

• 确认google-services.json已正确放置在app模块根目录，且与Firebase控制台对应项目的配置完全匹配。
• 检查Manifest中的applicationId与Firebase项目注册的应用ID一致。

5. 账号状态异常 #

登录Firebase控制台，查看目标账号是否被禁用、删除，或处于需邮箱验证的状态（路径：Authentication > Users）。

内容的提问来源于stack exchange，提问作者user23373839