我正在尝试将用户凭据保存到 Firebase 实时数据库。但是,当我执行程序时,数据库不会更新。我已经正确配置了 Firebase 设置,因为身份验证和存储(两个 Firebase)都在工作。
build.gradle
:
dependencies {
...
// Firebase SDK setup
// Import the BoM for the Firebase platform
implementation platform('com.google.firebase:firebase-bom:28.0.1')
// Declare the dependency for the Firebase library
implementation 'com.google.firebase:firebase-storage-ktx'
implementation 'com.google.firebase:firebase-auth-ktx'
implementation 'com.google.firebase:firebase-database-ktx'
}
apply plugin: 'com.google.gms.google-services'
AndroidManifest.xml
:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package=<NAME>>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
...
</application>
</manifest>
注册类(MWE):
class RegisterActivity : AppCompatActivity() {
var selectedPhotoUri: Uri? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
// Register UI
register_button_register.setOnClickListener {
performRegister()
}
}
// Register user credentials
private fun performRegister() {
val email = email_editText_register.text.toString()
val password = password_editText_register.text.toString()
// Firebase Authentication - WORKING
FirebaseAuth.getInstance().createUserWithEmailAndPassword(email, password)
.addOnCompleteListener {
uploadImageToFirebaseStorage()
}
}
// Upload selected photo to Firebase Storage - WORKING
private fun uploadImageToFirebaseStorage() {
if(selectedPhotoUri == null) return
val filename = UUID.randomUUID().toString()
val ref = FirebaseStorage.getInstance().getReference("/images/$filename")
ref.putFile(selectedPhotoUri!!)
ref.downloadUrl.addOnSuccessListener {
saveUserToFirebaseDatabase(it.toString())
}
}
// Save user associated credentials to Firebase Database - NOT WORKING
private fun saveUserToFirebaseDatabase(profileImageURL: String) {
val uid = FirebaseAuth.getInstance().uid ?: ""
val ref = Firebase.database.getReference("/users/$uid")
val user = User(uid, username_editText_register.text.toString(), profileImageURL)
ref.setValue(user)
}
}
// User credentials to be saved
class User(val uid: String, val username: String, val profileImageURL: String)
saveUserToFirebaseDatabase()
方法没有被执行?我在插入 logcat
和 onSuccessListener
语句后检查了 onFailureListener
,但是没有突出显示错误或调试信息。应用程序。将图像推送到存储,但数据库未更新。它仍然是空的。工作流程如下:
- Authenticate user by email and password. - WORKING
- Save profile image in Storage. - WORKING
- Save profile identifier, username, and image in DB. - NOT WORKING
Firebase 数据库规则:
{
"rules": {
".read": "true",
".write": "true"
}
}
我尝试更改层次结构,但也没有用:
val uid = FirebaseAuth.getInstance().uid ?: ""
val ref = Firebase.database.getReference("/users/$uid")
val user = User(uid, username_edittext_register.text.toString(), profileImageUrl)
ref.child("users").child(uid).setValue(user)
我已阅读 Firebase 文档,一切似乎都已就绪。我也禁用了我的防火墙,但这也不起作用。有人可以指出这里的问题吗?提前致谢。
答案 0 :(得分:3)
要获取对(默认)“us-central1”以外的 Firebase 实时数据库的引用,例如“europe-west1”,您必须将数据库网址传递给 getInstance() 方法。
对于“us-central1”,不需要这样做,您可以简单地调用“getInstance()”方法而不传递任何参数。
有关更多信息,请查看有关实时数据库位置的官方文档: