Question

运行代码时出现此错误：

错误：错误：类FirebaseListAdapter中的构造函数FirebaseListAdapter无法应用于给定类型；必需：FirebaseListOptions 找到：MainActivity，Class，int，DatabaseReference 原因：实际和正式论点清单的长度不同其中T是类型变量： T扩展了在类FirebaseListAdapter中声明的对象

这是我的代码：

private void displayChat() {

    ListView listOfMessage = findViewById(R.id.list_of_message);
    adapter = new FirebaseListAdapter<Chat>(this, Chat.class,R.layout.list_item,FirebaseDatabase.getInstance().getReference()) {
        @Override
        protected void populateView(View v, Chat model, int position) {
            //Get reference to the views of list_item.xml
            TextView messageText, messageUser, messageTime;
            messageText = findViewById(R.id.message_text);
            messageUser = findViewById(R.id.message_user);
            messageTime = findViewById(R.id.message_time);

            messageText.setText(model.getMessageText());
            messageUser.setText(model.getMessageUser());
            messageTime.setText(DateFormat.format("dd-MM-yyyy (HH:mm:ss)", model.getMessageTime()));
        }
    };
    listOfMessage.setAdapter(adapter);
}

我尝试了https://stackoverflow.com/questions/47243957/firebase-list-adapter-constructor-error问题的替换解决方案：

adapter = new FirebaseListAdapter<ChatMessage>(this,ChatMessage.class,R.layout.list_item,FirebaseDatabase.getInstance().getReference())

具有：

FirebaseListOptions<ChatMessage> options =
        new FirebaseListOptions.Builder<ChatMessage>()
                .setQuery(query, ChatMessage.class)
                 .setLayout(android.R.layout.simple_list_item_1)
                .build();
adapter = new FirebaseListAdapter<ChatMessage>(options){

但是我得到的只是更多错误，例如unable to resolve symbol FirebaseListOptions

这是我的应用级别dependencies：

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0-rc01'
    implementation 'com.android.support.constraint:constraint-layout:1.1.2'
    implementation 'com.google.android.gms:play-services-maps:15.0.1'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.firebaseui:firebase-ui:4.1.0'
    implementation 'com.android.support:support-core-utils:28.0.0-rc01'
    implementation 'com.android.support:design:28.0.0-rc01'
    implementation 'com.firebaseui:firebase-ui-auth:4.1.0'
    implementation 'com.google.firebase:firebase-auth:16.0.3'
    implementation 'com.google.firebase:firebase-core:16.0.3'
}
apply plugin: 'com.google.gms.google-services'
com.google.gms.googleservices.GoogleServicesPlugin.config.disableVersionCheck = true

我尝试了很多版本，并且错误从未停止。

FirebaseListAdapter无法应用于给定类型错误

0 个答案: