谢谢你们,Mateusz Herych和EpicPandaForce两位帮我解决了很多问题。
这是自定义适配器:
public abstract class RealmMultiAdapter<T extends RealmObject> extends BaseAdapter {
private final RealmChangeListener<T> realmChangeListener = new RealmChangeListener<T>() {
@Override
public void onChange(RealmResults<T> t) {
notifyDataSetChanged();
}
};
protected LayoutInflater inflater;
protected List<RealmResults<T>> realmResults;
protected Context context;
public RealmMultiAdapter(Context context, List<RealmResults<T>> realmResults, boolean automaticUpdate) {
if (context == null) {
throw new IllegalArgumentException("Context cannot be null");
}
this.context = context;
this.realmResults = realmResults;
this.inflater = LayoutInflater.from(context);
for(RealmResults<T> results : realmResults) {
results.addChangeListener(realmChangeListener);
}
}
@Override
public int getCount() {
if (realmResults == null) {
return 0;
}
int count = 0;
for(RealmResults<T> realmResult : realmResults) {
count += realmResult.size();
}
return count;
}
@Override
public T getItem(int i) {
if (realmResults == null || realmResults.size()==0) {
return null;
}
int count = 0;
for(RealmResults<T> realmResult : realmResults) {
if(i<realmResult.size()+count) {
return realmResult.get(i-count);
}
count += realmResult.size();
}
return null;
}
@Override
public long getItemId(int i) {
return i;
}
public void updateRealmResults(List<RealmResults<T>> queryResults) {
for(RealmResults<T> results : realmResults) {
if(results.isValid()) {
results.removeChangeListener(realmChangeListener);
}
}
this.realmResults = queryResults;
for(RealmResults<T> results : realmResults) {
results.addChangeListener(realmChangeListener);
}
notifyDataSetChanged();
}
}
基本上,我用一个RealmResults列表替换了单个的RealmResult,并修改了getItem()和getCount()方法。
// before
protected RealmResults<T> realmResults;
// after
protected List<RealmResults<T>> realmResults;
这是我更新搜索的方法。
List<RealmResults<Command>> results = new ArrayList<>();
results.add(mRealm.where(Command.class).equalTo("name", query).findAll());
results.add(mRealm.where(Command.class).beginsWith("name", query).notEqualTo("name", query).findAll());
results.add(mRealm.where(Command.class).contains("name", query).not().beginsWith("name", query).notEqualTo("name", query).findAll());
mAdapter.updateRealmResults(results);