prerequisites
- do not support java outside of android
- android studio >= 0.8.6
- android sdk
- jdk version >=7
- support all android versions since api level 9 (android 2.3 gingerbread & above)
installation
-
maven
- use jcenter as a dependency repo
- add
compile 'io.realm:realm-android:0.80.0'to the dependencies of your project - sync you project
-
jar
- download package and unzip
- copy the
realm-version.jarinto app/libs - sync you project
proguard
add the configuration below to your proguard configuration file
-keepnames public class * extends io.realm.RealmObject
-keep class io.realm.** { *; }
-dontwarn javax.**
-dontwarn io.realm.**
models
-
BusLine
public class BusLine extends RealmObject { @PrimaryKey private long id; private int lineIndex = 0; private String lineName = ""; private String lineCode = ""; private RealmList<BusStop> busStops; public long getId() { return id; } public void setId(long id) { this.id = id; } ... public void setBusStops(RealmList<BusStop> busStops) { this.busStops = busStops; } } -
BusStop
public class BusStop extends RealmObject { @PrimaryKey private long id = 0; private long busLineId = 0; private int stopIndex = 0; private String stopName = ""; private String stopDesc = ""; private String class07 = ""; private String class09 = ""; private String class13 = ""; private String class17 = ""; private String distance = ""; private String distanceEta = ""; private String stopImage = ""; public long getId() { return id; } public void setId(long id) { this.id = id; } ... }
writes
Realm realm = Realm.getInstance(context);
realm.beginTransaction();
Config config = realm.createObject(Config.class);
config.setKey("sync");
config.setValue("true");
realm.commitTransaction();
queries
final Realm realm = Realm.getInstance(this);
busLines = realm.where(BusLine.class).findAll();
busLines.sort("id");
notifications
// after sync refresh ui
realm.addChangeListener(new RealmChangeListener() {
@Override
public void onChange() {
busLines = realm.where(BusLine.class).findAll();
busLines.sort("id");
for (Object object : busLines.toArray()) {
navDrawerItems.add(new NavDrawerItem(((BusLine)object).getId() + " " + ((BusLine)object).getLineName()));
}
adapter.notifyDataSetChanged();
}
});
adapter
public class BusStopAdapter extends RealmBaseAdapter<BusStop> implements ListAdapter {
private static class ViewHolder {
TextView stopName;
}
public BusStopAdapter(Context context, RealmResults<BusStop> realmResults, boolean automaticUpdate) {
super(context, realmResults, automaticUpdate);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) this.context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.fragment_bus_stop_item, parent, false);
viewHolder = new ViewHolder();
viewHolder.stopName = (TextView) convertView.findViewById(R.id.stop_name);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
BusStop busStop = realmResults.get(position);
viewHolder.stopName.setText(busStop.getStopIndex() + " " + busStop.getStopName());
return convertView;
}
public RealmResults<BusStop> getRealmResults() {
return realmResults;
}
}