如何解决找不到com.google.firebase.auth的Android本地模块描述符类中的Firebase连接错误
这里总共有新手创建了他的第一个android应用。我正在尝试使用Firebase在android应用中进行身份验证。尝试注册新用户时,我不断收到Local module descriptor class for com.google.firebase.auth not found.
错误
build.gradle(项目)
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath "com.android.tools.build:gradle:4.0.1"
classpath "com.google.gms:google-services:4.3.3"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
build.gradle(app)
apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'
android {
compileSdkVersion 30
buildToolsVersion "30.0.0"
defaultConfig {
applicationId "com.example.encryptedchat"
minSdkVersion 21
targetSdkVersion 30
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'),'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: "libs",include: ["*.jar"])
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
// firebase
implementation 'com.google.firebase:firebase-auth:19.3.2'
implementation 'com.google.firebase:firebase-database:19.3.1'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}
AuthActivity.java
public class AuthActivity extends AppCompatActivity {
private EditText username,email,password,confirm_password;
private Button register_button;
FirebaseAuth auth;
DatabaseReference reference;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_auth);
username = findViewById(R.id.username);
email = findViewById(R.id.email);
password = findViewById(R.id.password);
confirm_password = findViewById(R.id.confirmPassword);
register_button = findViewById(R.id.registerButton);
register_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String str_username = username.getText().toString();
String str_email = email.getText().toString();
String str_password = password.getText().toString();
String str_confirm_password = confirm_password.getText().toString();
createAccount(str_username,str_email,str_password);
}
});
}
private void createAccount(final String uname,String emailaddr,String pswd) {
System.out.println(uname);
System.out.println(emailaddr);
System.out.println(pswd);
try {
auth.createUserWithEmailAndPassword(emailaddr,pswd).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
System.out.println(task);
if (task.isSuccessful()) {
System.out.println("inside task successful");
FirebaseUser firebaseUser = auth.getCurrentUser();
assert firebaseUser != null;
String userId = firebaseUser.getUid();
reference = FirebaseDatabase.getInstance().getReference("Users").child(userId);
HashMap<String,String> hashMap = new HashMap<>();
hashMap.put("id",userId);
hashMap.put("username",uname);
hashMap.put("imgURL","default");
reference.setValue(hashMap).addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
if (task.isSuccessful()) {
Intent intent = new Intent(AuthActivity.this,MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
finish();
}
}
});
} else {
Toast.makeText(AuthActivity.this,"Some error occurred...",Toast.LENGTH_SHORT).show();
}
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
}
错误日志
2020-08-21 22:09:28.683 22674-22674/com.example.encryptedchat I/e.encryptedcha: [GL_OOM] ClampGrowthLimit 268435456
2020-08-21 22:09:28.702 22674-22712/com.example.encryptedchat W/DynamiteModule: Local module descriptor class for com.google.firebase.auth not found.
2020-08-21 22:09:28.705 22674-22674/com.example.encryptedchat I/FirebaseInitProvider: FirebaseApp initialization successful
2020-08-21 22:09:28.706 22674-22674/com.example.encryptedchat V/Font: Change font:2
2020-08-21 22:09:28.706 22674-22674/com.example.encryptedchat V/Font: Default family:android.graphics.Typeface@a21ca01a
2020-08-21 22:09:28.711 22674-22716/com.example.encryptedchat E/Perf: Fail to get file list com.example.encryptedchat
2020-08-21 22:09:28.711 22674-22716/com.example.encryptedchat E/Perf: getFolderSize() : Exception_1 = java.lang.NullPointerException: Attempt to get length of null array
2020-08-21 22:09:28.711 22674-22716/com.example.encryptedchat E/Perf: Fail to get file list com.example.encryptedchat
2020-08-21 22:09:28.711 22674-22716/com.example.encryptedchat E/Perf: getFolderSize() : Exception_1 = java.lang.NullPointerException: Attempt to get length of null array
2020-08-21 22:09:28.716 22674-22715/com.example.encryptedchat W/DynamiteModule: Local module descriptor class for com.google.firebase.auth not found.
2020-08-21 22:09:28.720 22674-22715/com.example.encryptedchat I/FirebaseAuth: [FirebaseAuth:] Preparing to create service connection to gms implementation
我不明白为什么它抛出NullPointerException。所有值都已成功读取并传递。
错误日志
I/System.out: john
I/System.out: john@mail.con
pass123
W/System.err: java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.android.gms.tasks.Task com.google.firebase.auth.FirebaseAuth.createUserWithEmailAndPassword(java.lang.String,java.lang.String)' on a null object reference
W/System.err: at com.example.encryptedchat.AuthActivity.createAccount(AuthActivity.java:71)
at com.example.encryptedchat.AuthActivity.access$400(AuthActivity.java:25)
at com.example.encryptedchat.AuthActivity$1.onClick(AuthActivity.java:59)
at android.view.View.performClick(View.java:7201)
at android.view.View.performClickInternal(View.java:7170)
at android.view.View.access$3500(View.java:806)
at android.view.View$PerformClick.run(View.java:27562)
at android.os.Handler.handleCallback(Handler.java:883)
W/System.err: at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7682)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:516)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
我们将不胜感激 谢谢
解决方法
您忘记初始化auth
变量。您需要设置
auth = FirebaseAuth.getInstance();
只要在引用auth
时对其进行初始化,就可以执行此操作。我个人将其放在onCreate(...)
方法中。
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