Question

所以我尝试为我的应用程序使用Firebase云消息传递，但是当我尝试测试它时，即使是示例代码也会引发错误。

public class FirebaseIDService extends FirebaseInstanceIdService {
private static final String TAG = "FirebaseIDService";

@Override
public void onTokenRefresh() {
    // Get updated InstanceID token.
    String refreshedToken = FirebaseInstanceId.getInstance().getToken();
    Log.d(TAG, "Refreshed token: " + refreshedToken);

    // TODO: Implement this method to send any registration to your app's servers.
    sendRegistrationToServer(refreshedToken);
}

/**
 * Persist token to third-party servers.
 *
 * Modify this method to associate the user's FCM InstanceID token with any server-side account
 * maintained by your application.
 *
 * @param token The new token.
 */
private void sendRegistrationToServer(String token) {
    // Add custom implementation, as needed.
}
}

找不到任何引用Firebase API的函数，就好像我还没有包含它一样。这是我的应用程序：

dependencies {
 compile fileTree(dir: 'libs', include: ['*.jar'])
 androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
})
 compile fileTree(dir: 'libs', include: ['*.jar'])
 compile 'com.android.support:appcompat-v7:25.3.1'
 testCompile 'junit:junit:4.12'
 compile 'com.android.support:appcompat-v7:25.3.1'
 compile 'com.google.firebase:firebase-core:10.0.1'
 compile 'com.google.firebase:firebase-messaging:10.0.1'
 compile 'com.android.support.constraint:constraint-layout:1.0.2'
 compile 'com.firebase:firebase-jobdispatcher:0.6.0'
 testCompile 'junit:junit:4.12'
}

apply plugin: 'com.google.gms.google-services'

以下是我的项目：

buildscript {
 repositories {
     jcenter()
}
dependencies {
    classpath 'com.android.tools.build:gradle:2.3.2'
    classpath 'com.google.gms:google-services:3.1.0'

    // 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
}

Answer 1

尝试一下：

ionic cordova platforms remove android
ionic cordova plugin remove cordova-plugin-firebase
ionic cordova platforms add android

Answer 2

在这里，我对可能出现的问题保持预感：

检查文件顶部是否有此行：

import com.google.firebase.iid.FirebaseInstanceId;

如果您使用的是Android Studio，请访问： Tools -> Android -> Sync Project with Gradle Files 看看它是否有帮助。

Firebase功能未得到解决（无法解析＆＃34; FirebaseInstanceIdService＆＃34;）

2 个答案: