我有一個存儲用戶地址的實時Firebase數據庫。我想獲取值並將它們分配給android佈局中的textviews
。我試圖訪問數據是這樣的:如何訪問firebase中的子值實時數據庫
String city = (mDatabase.getDatabase().getReference().child(user_data.getString("uidkey", null)).child("city")).toString();
_cityText.setText(city);
但是,讓我只有這條街的火力網址,而不是實際值。我怎樣才能獲取這些數據?
This is how the database looks like.
public void onStart(){
super.onStart();
final SharedPreferences user_data = getSharedPreferences("PESASEND_PREFS", Context.MODE_PRIVATE);
mDatabase.child(user_data.getString("uidkey", null)).addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
Address address = dataSnapshot.getValue(Address.class);
// address.getCity();
_state_province_Text.setText(address.getStreet());
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
。
public class Address {
public String street;
public String city;
public String state;
public String zip_postal_code;
public String country;
public Address(){};
public Address(String street, String city, String state, String zip_postal_code, String country){
this.street = street;
this.city = city;
this.state = state;
this.zip_postal_code = zip_postal_code;
this.country = country;
}
public String getStreet(){return street;}
public String getCity(){return city;}
public String getState(){return state;}
public String getZipPostalCode(){return zip_postal_code;}
public String getCountry(){return country;}
}
[火力地堡檢索子的Android(可能的重複http://stackoverflow.com/questions/27848313/ firebase-retrieve-child-android) –