当我尝试切换到我的应用中的某个活动时，它会崩溃。这是我在手机上运行时的logcat。
以下是我开始的活动：
package com.epicodus.parkr;
import android.app.ProgressDialog;
import android.content.Intent;
import android.graphics.Typeface;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import butterknife.Bind;
import butterknife.ButterKnife;
public class MainActivity extends AppCompatActivity implements V View.OnClickListener {
private FirebaseAuth mAuth;
private ProgressDialog mSignInProgressDialog;
@Bind(R.id.headline)TextView mHeadline;
@Bind(R.id.headline2) TextView mHeadline2;
@Bind(R.id.signUpButton)Button mSignUpButton;
@Bind(R.id.loginButton) Button mLoginButton;
@Bind(R.id.emailInput) EditText mEmailInput;
@Bind(R.id.passwordInput) EditText mPasswordInput;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// createSignInProgressDialog();
mAuth = FirebaseAuth.getInstance();
ButterKnife.bind(this);
Typeface newFont = Typeface.createFromAsset(getAssets(), "fonts/Lobster-Regular.ttf");
mHeadline.setTypeface(newFont);
mHeadline2.setTypeface(newFont);
mSignUpButton.setOnClickListener(this);
mLoginButton.setOnClickListener(this);
}
@Override
public void onClick(View v){
if(v == mSignUpButton){
Intent signUpIntent = new Intent (MainActivity.this, SignUpActivity.class);
startActivity(signUpIntent);
}else if(v == mLoginButton){
// mSignInProgressDialog.show();
login();
finish();
}
}
private void login(){
final String email = mEmailInput.getText().toString();
final String pass = mPasswordInput.getText().toString();
if(!isNotEmpty(email) || !isNotEmpty(pass)) return;
mAuth.signInWithEmailAndPassword(email, mPasswordInput.getText().toString())
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (task.isSuccessful()) {
// mSignInProgressDialog.dismiss();
Intent loginIntent = new Intent (MainActivity.this, AccountActivity.class);
startActivity(loginIntent);
finish();
} else if (!task.isSuccessful()){
Toast.makeText(MainActivity.this, "Please Try Again", Toast.LENGTH_SHORT).show();
finish();
}
}
});
}
private void createSignInProgressDialog() {
mSignInProgressDialog = new ProgressDialog(this);
mSignInProgressDialog.setTitle("Loading...");
mSignInProgressDialog.setMessage("Signing In...");
mSignInProgressDialog.setCancelable(false);
}
private Boolean isNotEmpty(String email){
if(email.equals("")){
mEmailInput.setError("Blank Field");
return false;
}
return true;
}
}
以下是我想要进行的活动：
package com.epicodus.parkr;
import android.content.Intent;
import android.graphics.Typeface;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import butterknife.Bind;
import butterknife.ButterKnife;
public class AccountActivity extends AppCompatActivity implements View.OnClickListener {
private FirebaseAuth mAuth;
private String uid;
private DatabaseReference mSpecificUserReference;
@Bind(R.id.userNameDisplay) TextView mUserNameDisplay;
@Bind(R.id.headline) TextView mHeadline;
@Bind(R.id.logOutButton) Button mLogOutButton;
@Bind(R.id.findSpotsButton) Button mFindSpotsButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
mAuth = FirebaseAuth.getInstance();
uid = mAuth.getCurrentUser().getUid();
mSpecificUserReference = FirebaseDatabase.getInstance().getReference().child(Constants.FIREBASE_CHILD_USER).child(uid);
mSpecificUserReference.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
String userName = dataSnapshot.child("fullName").getValue().toString();
mUserNameDisplay.setText(userName);
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_account);
ButterKnife.bind(this);
Typeface newFont = Typeface.createFromAsset(getAssets(), "fonts/Lobster-Regular.ttf");
mHeadline.setTypeface(newFont);
Intent infoIntent = getIntent();
String userName = infoIntent.getStringExtra("user");
mUserNameDisplay.setText(userName);
mFindSpotsButton.setOnClickListener(this);
mLogOutButton.setOnClickListener(this);
}
private void logout() {
FirebaseAuth.getInstance().signOut();
Intent intent = new Intent(AccountActivity.this, MainActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);
finish();
}
@Override
public void onClick(View view) {
if(view == mLogOutButton){
logout();
} else if (view == mFindSpotsButton){
Intent findSpotIntent = new Intent (AccountActivity.this, MapsActivity.class);
startActivity(findSpotIntent);
}
}
}
以下是从我的手机上运行的logcat：
07-15 11:08:29.800 16082-16082/com.epicodus.parkr E/Zygote: MountEmulatedStorage()
07-15 11:08:29.800 16082-16082/com.epicodus.parkr E/Zygote: v2
07-15 11:08:29.800 16082-16082/com.epicodus.parkr E/SELinux: [DEBUG] get_category: variable seinfo: default sensitivity: NULL, cateogry: NULL
07-15 11:08:34.574 16082-16312/com.epicodus.parkr E/DynamiteModule: Failed to load module descriptor class: Didn't find class "com.google.android.gms.dynamite.descriptors.com.google.firebase.auth.ModuleDescriptor" on path: DexPathList[[zip file "/data/app/com.epicodus.parkr-2/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
07-15 11:08:34.604 16082-16312/com.epicodus.parkr E/DynamiteModule: Failed to load module descriptor class: Didn't find class "com.google.android.gms.dynamite.descriptors.com.google.firebase.auth.ModuleDescriptor" on path: DexPathList[[zip file "/data/app/com.epicodus.parkr-2/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
07-15 11:08:35.365 16082-16082/com.epicodus.parkr E/DynamiteModule: Failed to load module descriptor class: Didn't find class "com.google.android.gms.dynamite.descriptors.com.google.android.gms.crash.ModuleDescriptor" on path: DexPathList[[zip file "/data/app/com.epicodus.parkr-2/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
07-15 11:08:47.557 16082-16312/com.epicodus.parkr E/DynamiteModule: Failed to load module descriptor class: Didn't find class "com.google.android.gms.dynamite.descriptors.com.google.firebase.auth.ModuleDescriptor" on path: DexPathList[[zip file "/data/app/com.epicodus.parkr-2/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
这是模拟器的logcat：
07-15 11:28:07.449 2941-3074/com.epicodus.parkr E/DynamiteModule: Failed to load module descriptor class: Didn't find class "com.google.android.gms.dynamite.descriptors.com.google.firebase.auth.ModuleDescriptor" on path: DexPathList[[zip file "/data/app/com.epicodus.parkr-2/base.apk"],nativeLibraryDirectories=[/data/app/com.epicodus.parkr-2/lib/x86, /vendor/lib, /system/lib]]
07-15 11:28:07.462 2941-3074/com.epicodus.parkr E/DynamiteModule: Failed to load module descriptor class: Didn't find class "com.google.android.gms.dynamite.descriptors.com.google.firebase.auth.ModuleDescriptor" on path: DexPathList[[zip file "/data/app/com.epicodus.parkr-2/base.apk"],nativeLibraryDirectories=[/data/app/com.epicodus.parkr-2/lib/x86, /vendor/lib, /system/lib]]
07-15 11:28:07.550 2941-2941/com.epicodus.parkr E/DynamiteModule: Failed to load module descriptor class: Didn't find class "com.google.android.gms.dynamite.descriptors.com.google.android.gms.crash.ModuleDescriptor" on path: DexPathList[[zip file "/data/app/com.epicodus.parkr-2/base.apk"],nativeLibraryDirectories=[/data/app/com.epicodus.parkr-2/lib/x86, /vendor/lib, /system/lib]]
07-15 11:28:17.925 2941-3074/com.epicodus.parkr E/DynamiteModule: Failed to load module descriptor class: Didn't find class "com.google.android.gms.dynamite.descriptors.com.google.firebase.auth.ModuleDescriptor" on path: DexPathList[[zip file "/data/app/com.epicodus.parkr-2/base.apk"],nativeLibraryDirectories=[/data/app/com.epicodus.parkr-2/lib/x86, /vendor/lib, /system/lib]]
07-15 11:28:22.893 2941-3074/com.epicodus.parkr E/DynamiteModule: Failed to load module descriptor class: Didn't find class "com.google.android.gms.dynamite.descriptors.com.google.firebase.auth.ModuleDescriptor" on path: DexPathList[[zip file "/data/app/com.epicodus.parkr-2/base.apk"],nativeLibraryDirectories=[/data/app/com.epicodus.parkr-2/lib/x86, /vendor/lib, /system/lib]]
07-15 11:28:22.895 2941-3074/com.epicodus.parkr E/DynamiteModule: Failed to load module descriptor class: Didn't find class "com.google.android.gms.dynamite.descriptors.com.google.firebase.auth.ModuleDescriptor" on path: DexPathList[[zip file "/data/app/com.epicodus.parkr-2/base.apk"],nativeLibraryDirectories=[/data/app/com.epicodus.parkr-2/lib/x86, /vendor/lib, /system/lib]]
07-15 11:28:23.036 2941-3090/com.epicodus.parkr E/Surface: getSlotFromBufferLocked: unknown buffer: 0xaa959c80
07-15 11:28:23.271 3286-3286/com.epicodus.parkr:background_crash E/DynamiteModule: Failed to load module descriptor class: Didn't find class "com.google.android.gms.dynamite.descriptors.com.google.android.gms.crash.ModuleDescriptor" on path: DexPathList[[zip file "/data/app/com.epicodus.parkr-2/base.apk"],nativeLibraryDirectories=[/data/app/com.epicodus.parkr-2/lib/x86, /vendor/lib, /system/lib]]
07-15 11:28:32.963 2941-3074/com.epicodus.parkr E/DynamiteModule: Failed to load module descriptor class: Didn't find class "com.google.android.gms.dynamite.descriptors.com.google.firebase.auth.ModuleDescriptor" on path: DexPathList[[zip file "/data/app/com.epicodus.parkr-2/base.apk"],nativeLibraryDirectories=[/data/app/com.epicodus.parkr-2/lib/x86, /vendor/lib, /system/lib]]
以下是app level build.gradle文件：
apply plugin: 'com.android.application'
android {
compileSdkVersion 24
buildToolsVersion "24.0.0"
defaultConfig {
applicationId "com.epicodus.parkr"
minSdkVersion 15
targetSdkVersion 24
versionCode 1
versionName "1.0"
}
packagingOptions {
exclude 'META-INF/DEPENDENCIES.txt'
exclude 'META-INF/DEPENDENCIES'
exclude 'META-INF/dependencies.txt'
exclude 'META-INF/LICENSE.txt'
exclude 'META-INF/LICENSE'
exclude 'META-INF/license.txt'
exclude 'META-INF/LGPL2.1'
exclude 'META-INF/NOTICE.txt'
exclude 'META-INF/NOTICE'
exclude 'META-INF/notice.txt'
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:24.0.0'
compile 'com.jakewharton:butterknife:7.0.1'
compile 'com.google.firebase:firebase-database:9.0.0'
compile 'com.google.firebase:firebase-auth:9.0.0'
compile 'com.google.android.gms:play-services:9.0.0'
compile 'com.firebaseui:firebase-ui-database:0.4.1'
compile 'com.android.support:recyclerview-v7:+'
compile 'com.google.android.gms:play-services-appindexing:9.0.0'
}
configurations.all {
resolutionStrategy {
force 'com.android.support:design:23.4.0'
force 'com.android.support:support-v4:23.4.0'
force 'com.android.support:appcompat-v7:23.4.0'
}
}
apply plugin: 'com.google.gms.google-services'
和项目一级：
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.1.2'
classpath 'com.google.gms:google-services:3.0.0'
classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
答案 0 :(得分：0)
首先检查您是否拥有将Firebase添加到Android项目的所有prerequisites：
如果它不起作用，请检查Firebase内的登录方法＆gt; Auth Dashboard 已禁用。启用它，你应该很高兴。