Realm Database read data from Android

问题

I am new to realm database so need some help. When I kill my app then come back to the app again, I am unable to retrieve the data which was saved in retrofit. Insertion is working perfectly. Here is my code :

Insert Code inside callJson Method:

 realm.beginTransaction();
 realmCities = realm.copyToRealm(clientContactList);
 realm.commitTransaction();

Response after inserting when i am logging :

path :  /data/data/com.xyz.da/files/default.realm
response from realm : E/Output: ClientContact = proxy[{clientName:A},{email:mit@email.com},{address:Palava},{contactPerson:Amit},{numberMobile:9930182464},{numberLandline:25123456},{groupName:B},{tumbnailColor:0}]ClientContact = proxy[{clientName:A1},{email:abc@email.com},{address:MBP},{contactPerson:John},{numberMobile:9876543210},{numberLandline:25123456},{groupName:B1},{tumbnailColor:0}]ClientContact = proxy[{clientName:A10},{email:abc@email.com},{address:MBP},{contactPerson:John},{numberMobile:9876543210},{numberLandline:25123456},{groupName:E2},{tumbnailColor:0}]

In onCreateView I am doing like this : Here when i kill app and come back realmCities List coming null so it again hitting callJson()

if(realmCities!=null && realmCities.size()>0){
    Log.e("realmCities",""+realmCities.size());
}else{
    callJSON();
}

回答1:

you have inserted data but when app is restart you have to get data from database

 realm.beginTransaction();
 realmCities = realm.copyToRealm(clientContactList);
 realm.commitTransaction();

when restart the app you have to get data from database like :

RealmResults<ClientContact> realmCities= realm.where(ClientContact.class).findAllAsync();    
                        //fetching the data
        realmCities.load();

and after that you have to check condition

if(realmCities!=null && realmCities.size()>0){
    Log.e("realmCities",""+realmCities.size());
}else{
    callJSON();
}

来源：https://stackoverflow.com/questions/45407852/realm-database-read-data-from-android

标签

android

realm