Android開発でRealmからデータを取得しlistviewに一覧表示したいのですがデータが取得できず空白になってしまいます。解決方法知っている方力になってくれませんか?
java
1AllActivity 2 3package com.example.hsatou.dbsample; 4 5import android.content.Intent; 6import android.os.Bundle; 7import android.support.v7.app.AppCompatActivity; 8import android.view.View; 9import android.widget.ListView; 10import io.realm.Realm; 11import io.realm.RealmResults; 12 13public class AllActivity extends AppCompatActivity { 14 15 private Realm mRealm; 16 private ListView mListView; 17 18 @Override 19 protected void onCreate(Bundle savedInstanceState) { 20 super.onCreate(savedInstanceState); 21 setContentView(R.layout.activity_all); 22 mRealm = Realm.getDefaultInstance(); 23 mListView = (ListView)findViewById(R.id.listview); 24 RealmResults<Dog> dog = mRealm.where(Dog.class).findAll(); 25 AllAdapter adapter = new AllAdapter(dog); 26 mListView.setAdapter(adapter); 27 } 28} 29
java
1All Adapter 2 3package com.example.hsatou.dbsample; 4 5import android.support.annotation.Nullable; 6import android.view.LayoutInflater; 7import android.view.View; 8import android.view.ViewGroup; 9import android.widget.TextView; 10 11import io.realm.OrderedRealmCollection; 12import io.realm.RealmBaseAdapter; 13 14/** 15 * Created by s20153004 on 2017/11/17. 16 */ 17 18public class AllAdapter extends RealmBaseAdapter<Dog> { 19 20 private static class ViewHolder { 21 TextView name; 22 TextView age; 23 } 24 25 public AllAdapter(@Nullable OrderedRealmCollection<Dog> data) { 26 super(data); 27 } 28 29 @Override 30 public View getView(int position, View convertView, ViewGroup parent) { 31 ViewHolder viewHolder; 32 33 if(convertView == null) { 34 convertView = LayoutInflater.from(parent.getContext()).inflate(android.R.layout.simple_list_item_2,parent,false); 35 viewHolder = new ViewHolder(); 36 viewHolder.name = (TextView)convertView.findViewById(android.R.id.text1); 37 viewHolder.age = (TextView)convertView.findViewById(android.R.id.text2); 38 convertView.setTag(viewHolder); 39 } else { 40 viewHolder = (ViewHolder)convertView.getTag(); 41 } 42 43 Dog dog = adapterData.get(position); 44 return convertView; 45 } 46} 47
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