我正在尝试使用Firebase在我的项目中实现一个简单的聊天消息功能。尝试从我的设备或Firebase发送消息时，该应用始终崩溃。
找到名称冲突的吸气剂：isChangingConfigurations
这是我引用的教程：https://code.tutsplus.com/tutorials/how-to-create-an-android-chat-app-using-firebase--cms-27397
这是成功遵循同一教程的人的github： https://github.com/tutsplus/how-to-create-an-android-chat-app-using-firebase/blob/master/app/src/main/java/com/tutsplus/mychatapp/MainActivity.java
我已经坚持了一个星期，有人可以帮忙吗？
package com.plugmeinapp.plugmeinapp;
// this activity deals with Usertype:Artist to message artist or edit profile
import android.content.Intent;
import android.support.constraint.ConstraintLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import com.firebase.ui.database.FirebaseListAdapter;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import java.text.DateFormat;
public class ArtistStartChatActivity extends AppCompatActivity {
private FirebaseAuth mAuth;
private FirebaseUser mCurrentUser;
private DatabaseReference mRef, mUsersRef, mCurrentUserRef, mChatsRef;
private Button button_Artist_startChat, button_Artist_EditProfile;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_artist_start_chat); // set to xml file layout
//FireBase
// initialize to get current user's information
mAuth = FirebaseAuth.getInstance();
mCurrentUser = mAuth.getCurrentUser();
mRef = FirebaseDatabase.getInstance().getReference();
mUsersRef = mRef.child("Users");
mChatsRef = mRef.child("Chats");
try {// this is created so that user authorization is empty(turned off app, signed out to come back)
mAuth = FirebaseAuth.getInstance();
mCurrentUser = mAuth.getCurrentUser();
// if currentUser turned out to be null now Start from login activity
if (mAuth == null && mCurrentUser == null) {
Intent i = new Intent(ArtistStartChatActivity.this, LoginActivity.class);
startActivity(i);
finish();
}
} catch (NullPointerException e) {
e.printStackTrace();
}
// choose either chat or edit profile for Artist option
button_Artist_startChat = findViewById(R.id.button_Artist_startChat);
button_Artist_EditProfile = findViewById(R.id.button_Artist_EditProfile);
//when user clicks to Start Chat, move the page to the Chat activity
button_Artist_startChat.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent startArtistChat = new Intent(ArtistStartChatActivity.this, Chat.class);
startActivity(startArtistChat);
finish();
}
});
//when user clicks to go edit UserProfile, move the page to the UserProfile activity
button_Artist_EditProfile.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent openArtistProfile = new Intent(ArtistStartChatActivity.this, UserProfileActivity.class);
startActivity(openArtistProfile);
finish();
}
});
}
}
package com.plugmeinapp.plugmeinapp;
import android.content.Intent;
import android.content.Loader;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.constraint.ConstraintLayout;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import java.util.Date;
import com.firebase.ui.auth.AuthUI;
import com.firebase.ui.database.FirebaseListAdapter;
import com.firebase.ui.database.FirebaseListOptions;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.Query;
import com.google.firebase.iid.FirebaseInstanceId;
//import com.google.instrumentation.stats.Tag;
public class Chat extends ArtistStartChatActivity {
private FirebaseAuth mAuth;
private static final int SIGN_IN_REQUEST_CODE = 1;
private FirebaseListAdapter<ChatElements> adapter;
FloatingActionButton fab;
@Override
public boolean onOptionsItemSelected(MenuItem item){
if (item.getItemId() == R.id.signOut){
AuthUI.getInstance().signOut(this).addOnCompleteListener(new OnCompleteListener<Void>(){
@Override
public void onComplete(@NonNull Task<Void> task){
//Snackbar.make(activity_chat,"Signed out",Snackbar.LENGTH_SHORT).show();
Toast.makeText(Chat.this,"Signed out.",Toast.LENGTH_LONG).show();
finish();
}
});
}
return true;
}
@Override
public boolean onCreateOptionsMenu(Menu menu){
getMenuInflater().inflate(R.menu.menu,menu);
return true;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data){
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == SIGN_IN_REQUEST_CODE){
if(resultCode == RESULT_OK){
//Snackbar.make(activity_chat, "Welcome!",Snackbar.LENGTH_SHORT).show();
Toast.makeText(this,"Welcome!",Toast.LENGTH_LONG).show();
displayChatElements();
}else{
//Snackbar.make(activity_chat,"Could not sign in." ,Snackbar.LENGTH_SHORT).show();
Toast.makeText(this,"Could not sign in.",Toast.LENGTH_LONG).show();
// Close the app
finish();
}
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chat); // set to xml file layout
mAuth = FirebaseAuth.getInstance();
//FireBase
//Check if not sign-in then navigation SignIn page
if (FirebaseAuth.getInstance().getCurrentUser() == null) {
// Start sign in/sign up activity
startActivityForResult(AuthUI.getInstance().createSignInIntentBuilder().build(), SIGN_IN_REQUEST_CODE);
} else {
// User is already signed in. Therefore, display
Toast.makeText(this, "Welcome!" + FirebaseAuth.getInstance().getCurrentUser().getDisplayName(), Toast.LENGTH_LONG).show();
//Load Chat Content
displayChatElements();
}
FloatingActionButton fab = findViewById(R.id.fab);
if (fab != null)
fab.setOnClickListener(new View.OnClickListener() {
//Get User Data, Send/Receive to Firebase
@Override
public void onClick(View view) {
EditText input = (EditText) findViewById(R.id.input);
// Read the input field and push a new instance
// of ChatElement to the Firebase database
FirebaseDatabase
.getInstance()
.getReference()
.push()
//Logcat ERROR Here!!!!!
.setValue(new ChatElements(input.getText().toString(), FirebaseAuth.getInstance().getCurrentUser().getDisplayName()));
// Clear the input
input.setText("");
}
});
}
private void displayChatElements() {
ListView listOfMessage = (ListView) findViewById(R.id.list_of_messages);
//Retrieve "chats" in your Firebase DB:
Query query =
FirebaseDatabase.getInstance().getReference().child("chats");
//Create FirebaseListOptions
FirebaseListOptions<ChatElements> options = new FirebaseListOptions.Builder<ChatElements>()
.setQuery(query, ChatElements.class)
.setLayout(android.R.layout.activity_list_item)
.build();
//Finally you pass them to the constructor here:
adapter = new FirebaseListAdapter<ChatElements>(options){
@Override
protected void populateView(View v, ChatElements model, int position) {
//get references to the view of chat_list_item.xml
TextView messageText, messageUser, messageTime;
messageText = (TextView) v.findViewById(R.id.message_text);
messageUser = (TextView) v.findViewById(R.id.message_user);
messageTime = (TextView) v.findViewById(R.id.message_time);
// Set their text
messageText.setText(model.getMessageText());
messageUser.setText(model.getMessageUser());
// Format the date before showing it
messageTime.setText(android.text.format.DateFormat.format("dd-MM-yyyy (HH:mm:ss)", model.getMessageTime()));
}
};
listOfMessage.setAdapter(adapter);
}
@Override
public void onStart() {
super.onStart();
adapter.startListening();
}
@Override
protected void onStop() {
super.onStop();
adapter.stopListening();
}
}
apply plugin: 'com.android.application'
android {
compileSdkVersion 27
defaultConfig {
applicationId "com.plugmeinapp.plugmeinapp"
minSdkVersion 16
targetSdkVersion 27
versionCode 1
versionName "1.0"
//testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
//implementation 'com.android.support:appcompat-v7:27.1.1'//Chat Messaging
//implementation 'com.android.support:design:27.1.1' //Chat Messaging
//implementation 'com.android.support:cardview-v7:27.1.1' //Chat Messaging
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
implementation 'com.google.firebase:firebase-messaging:17.1.0'
//testImplementation 'junit:junit:4.12'
//androidTestImplementation 'com.android.support.test:runner:1.0.1'
//androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
implementation 'com.google.firebase:firebase-core:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.2'
implementation 'com.google.firebase:firebase-firestore:17.0.4'
implementation 'com.firebaseui:firebase-ui-database:4.0.0'
implementation 'com.firebaseui:firebase-ui-auth:4.0.0'
implementation 'com.firebaseui:firebase-ui:4.0.0'
implementation 'de.hdodenhof:circleimageview:2.2.0'
implementation 'com.squareup.picasso:picasso:2.71828'
implementation 'com.google.android.gms:play-services-auth:15.0.1'
}
apply plugin: 'com.google.gms.google-services'
08-11 13:41:19.726 9209-9209/com.plugmeinapp.plugmeinapp D/AndroidRuntime: Shutting down VM
08-11 13:41:19.728 9209-9209/com.plugmeinapp.plugmeinapp E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.plugmeinapp.plugmeinapp, PID: 9209
com.google.firebase.database.DatabaseException: Found conflicting getters for name: isChangingConfigurations
at com.google.android.gms.internal.firebase_database.zzku.<init>(Unknown Source)
at com.google.android.gms.internal.firebase_database.zzkt.zza(Unknown Source)
at com.google.android.gms.internal.firebase_database.zzkt.zzi(Unknown Source)
at com.google.android.gms.internal.firebase_database.zzkt.zzh(Unknown Source)
at com.google.firebase.database.DatabaseReference.zza(Unknown Source)
at com.google.firebase.database.DatabaseReference.setValue(Unknown Source)
at com.plugmeinapp.plugmeinapp.Chat$2.onClick(Chat.java:120) //Chat.Java File
at android.view.View.performClick(View.java:5624)
at android.view.View$PerformClick.run(View.java:22441)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6316)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:872)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:762)
08-11 13:46:11.078 9209-10777/com.plugmeinapp.plugmeinapp I/FirebaseAuth:
[FirebaseAuth:] Loading module via FirebaseOptions.
08-11 13:46:11.080 9209-10777/com.plugmeinapp.plugmeinapp I/FirebaseAuth:
[FirebaseAuth:] Preparing to create service connection to gms implementation
package com.plugmeinapp.plugmeinapp;
import java.util.Date;
public class ChatElements extends Chat {
private String messageText;
private String messageUser;
private long messageTime;
public ChatElements(String messageText, String messageUser) {
this.messageText = messageText;
this.messageUser = messageUser;
// Initialize to current time
messageTime = new Date().getTime();
}
public ChatElements() {
}
public String getMessageText() {
return messageText;
}
public void setMessageText(String messageText) {
this.messageText = messageText;
}
public String getMessageUser() {
return messageUser;
}
public void setMessageUser(String messageUser) {
this.messageUser = messageUser;
}
public long getMessageTime() {
return messageTime;
}
public void setMessageTime(long messageTime) {
this.messageTime = messageTime;
}
答案 0 :(得分：0)
这些是您的项目所需的库：
p = Popen(["crontab -e"], stdin=PIPE, stdout=PIPE, shell=True)
p.stdin.write("@reboot python test.py")
然后将implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support:design:27.1.1'
implementation 'com.android.support:cardview-v7:27.1.1'
更改为apply plugin