如何将 Realm Android Adapter 与 RecyclerView 一起使用

Question

我正在尝试学习使用RecyclerView 和Realm。我正在关注here的官方教程。

但是当我自己编写程序时，我在复制示例本身时遇到了错误。

官方 MyRecyclerViewAdapter 示例代码发布在 Realm 的 Github 上 here。

我的SubjectsAdapter 代码是 -

package in.medicalguru.adapters;

import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import in.medicalguru.MainActivity;
import in.medicalguru.R;
import in.medicalguru.models.TimeStamp;
import io.realm.OrderedRealmCollection;
import io.realm.RealmRecyclerViewAdapter;

public class SubjectsAdapter extends RealmRecyclerViewAdapter<TimeStamp, SubjectsAdapter.MyViewHolder> {
    private final MainActivity activity;

    public SubjectsAdapter(MainActivity activity, OrderedRealmCollection<TimeStamp> data) {
        super(data, true);
        this.activity = activity;
    }


    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View itemView = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.row, parent, false);
        return new MyViewHolder(itemView);
    }

    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
        TimeStamp obj = getData().get(position);
        holder.data = obj;
        //holder.title.setText(obj.getSubjectName());
        holder.title.setText(obj.getTimeStamp());
    }


    class MyViewHolder extends RecyclerView.ViewHolder implements View.OnLongClickListener {
        public TextView title;
        public TimeStamp data;

        public MyViewHolder(View view) {
            super(view);
            title = (TextView) view.findViewById(R.id.textview);
            view.setOnLongClickListener(this);
        }

        @Override
        public boolean onLongClick(View v) {
            //activity.deleteItem(data);
            return true;
        }
    }
}

项目build.grade的相关部分：

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.2.2'
        classpath "io.realm:realm-gradle-plugin:2.2.1"
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

模块build.gradle的相关部分：-

apply plugin: 'com.android.application'
apply plugin: 'realm-android'

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 'com.android.support:appcompat-v7:25.0.1'
    compile 'com.google.android.gms:play-services-ads:10.0.1'
    testCompile 'junit:junit:4.12'
    compile 'com.google.code.gson:gson:2.4'
    compile 'org.glassfish:javax.annotation:10.0-b28'
    compile 'com.android.support:recyclerview-v7:25.0.1'
    compile 'io.realm:android-adapters:1.4.0'
}

不幸的是，我对 Realm 很陌生，我无法理解这个错误的确切含义，所以我什至无法用谷歌搜索它。

Answer 1

IntelliJ 提示说构造函数的super 调用中的第一个参数应该是Context。

试试这个。

public SubjectsAdapter(MainActivity activity, OrderedRealmCollection<TimeStamp> data) {
    super(activity, data, true);
    this.activity = activity;
}