我想将Firebase身份验证和Firebase云消息添加到我的应用中。在关注最新的get started guide后，我无法创建新用户。我还考虑了this code example。我在Firebase控制台中启用了：
OTUPUT：
D/EmailPassword: onAuthStateChanged:signed_out
D/EmailPassword: createAccount:mail
W/DynamiteModule: Local module descriptor class for com.google.firebase.auth not found.
W/GooglePlayServicesUtil: Google Play services out of date. Requires 10084000 but found 9877470
我发现了类似的问题，但所有答案在我的问题中没有帮助我...我认为这只是一个小傻的错误，但我无法解决问题。
应用级别上的gradle文件如下所示：
apply plugin: 'com.android.application'
android {
compileSdkVersion 24
buildToolsVersion "24.0.3"
defaultConfig {
applicationId "app.radiant.c.lly"
minSdkVersion 17
targetSdkVersion 24
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
productFlavors {
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.squareup.picasso:picasso:2.5.2'
compile 'com.android.support:appcompat-v7:24.2.1'
//compile 'com.google.android.gms:play-services-appindexing:9.8.0'
compile 'com.google.android.gms:play-services:10.0.0'
compile 'com.android.support:design:24.2.1'
testCompile 'junit:junit:4.12'
compile 'com.android.support:cardview-v7:24.2.1'
// Firebase Dependencies
compile 'com.google.firebase:firebase-core:10.0.0'
compile 'com.google.firebase:firebase-auth:10.0.0'
compile 'com.google.firebase:firebase-messaging:10.0.0'
}
// Firebase Plugin
apply plugin: 'com.google.gms.google-services'
我在项目级别的gradle文件如下所示：
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.2.2'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
// Added this line for Firebase
classpath 'com.google.gms:google-services:3.0.0'
}
}
allprojects {
repositories {
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
我有一个外部数据库，用于存储已登录的用户。在Firebase中，我只想使用默认密码存储我的数据库中的电子邮件地址。为此，我刚创建了一个按钮，该按钮应该在按下时将用户存储在Firebase上。
public class InboxFragment extends Fragment {
View view;
Activity callingActivity;
Account account;
ListView chats;
Button btn;
ArrayList<String> exampleContent = new ArrayList<>();
ArrayAdapter<String> adapter;
// Firebase instance variables
private static final String TAG = "EmailPassword";
private FirebaseAuth mAuth;
private FirebaseAuth.AuthStateListener mAuthListener;
String username;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
view = inflater.inflate(R.layout.fragment_inbox, container, false);
callingActivity = getActivity();
account = (Account) callingActivity.getApplication();
// Firebase
// [START initialize_auth]
mAuth = FirebaseAuth.getInstance();
// [END initialize_auth]
// [START auth_state_listener]
mAuthListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser user = firebaseAuth.getCurrentUser();
if (user != null) {
// User is signed in
Log.d(TAG, "onAuthStateChanged:signed_in:" + user.getUid());
} else {
// User is signed out
Log.d(TAG, "onAuthStateChanged:signed_out");
}
// [START_EXCLUDE]
//updateUI(user);
// [END_EXCLUDE]
}
};
// [END auth_state_listener]
btn = (Button) view.findViewById(R.id.addUsernameBtn);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
createAccount(account.getEmail(), "empty");
}
});
// Code
chats = (ListView) view.findViewById(R.id.userChatList);
// Add example content to array
exampleContent.add("Chat 1");
exampleContent.add("Chat 2");
//exampleContent.add(username);
adapter = new ArrayAdapter<String>(callingActivity, android.R.layout.simple_list_item_1, exampleContent);
chats.setAdapter(adapter);
chats.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent i = new Intent(getActivity(), ChatActivity.class);
startActivity(i);
}
});
return view;
}
// [START on_start_add_listener]
@Override
public void onStart() {
super.onStart();
mAuth.addAuthStateListener(mAuthListener);
}
// [END on_start_add_listener]
// [START on_stop_remove_listener]
@Override
public void onStop() {
super.onStop();
if (mAuthListener != null) {
mAuth.removeAuthStateListener(mAuthListener);
}
}
// [END on_stop_remove_listener]
private void createAccount(String email, String password) {
Log.d(TAG, "createAccount:" + email);
/*if (!validateForm()) {
return;
}*/
//showProgressDialog();
// [START create_user_with_email]
mAuth.createUserWithEmailAndPassword(email, password)
.addOnCompleteListener(getActivity(), new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
Log.d(TAG, "createUserWithEmail:onComplete:" + task.isSuccessful());
// If sign in fails, display a message to the user. If sign in succeeds
// the auth state listener will be notified and logic to handle the
// signed in user can be handled in the listener.
if (!task.isSuccessful()) {
Log.e(TAG, "ERROR");
/*Toast.makeText(EmailPasswordActivity.this, R.string.auth_failed,
Toast.LENGTH_SHORT).show();*/
}
// [START_EXCLUDE]
//hideProgressDialog();
// [END_EXCLUDE]
}
});
// [END create_user_with_email]
}
}
但这不起作用。我得到了输出（见问题的顶部）。
答案 0 :(得分：8)
这是问题所在：
W/GooglePlayServicesUtil: Google Play services out of date. Requires 10084000 but found 9877470
如果您在模拟器上运行，则需要降级到Play服务和Firebase库的9.8.0版或9.6.1版，具体取决于您要模拟的API级别。没有已发布的支持10.0.0版本的模拟器映像。
如果您使用的是真实设备，则需要更新自己的Google Play服务版本。当前版本是10.0.84。您可以转到设置＆gt;来查看手机上安装的版本。应用程序管理器＆gt; Google Play服务。
此日志消息不表示存在问题。它似乎在正常操作期间输出：
W/DynamiteModule: Local module descriptor class for com.google.firebase.auth not found.