그래서 firebase 데이터베이스에서 사용자 프로필 정보를 검색하여 Android 앱에 표시하려고하지만 전혀 작동하지 않습니다!Firebase에서 값을 가져 와서 EditText에 표시
다음은 시도한 코드입니다.하지만 운이 전혀 없습니다! 내가 여기서 0 도시 한 OnCreate 방법 ArrayList의 크기를 인쇄하려고
package com.example.ravneet.bloodhub;
import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.EditText; import android.widget.TextView;
import com.google.firebase.auth.FirebaseAuth; import com.google.firebase.auth.FirebaseUser; import com.google.firebase.database.ChildEventListener; import com.google.firebase.database.DataSnapshot; import com.google.firebase.database.DatabaseError; import com.google.firebase.database.DatabaseReference; import com.google.firebase.database.FirebaseDatabase;
import java.util.ArrayList;
public class Editprofile extends AppCompatActivity {
TextView chngpsw;
EditText name, state, city, bloodgrp, mobileno, email;
FirebaseUser currentFirebaseUser;
String id;
private static final String TAG = "EditProfile";
ArrayList<String> mylist;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_editprofile);
mylist = new ArrayList<String>();
chngpsw = (TextView) findViewById(R.id.chngpsw);
currentFirebaseUser = FirebaseAuth.getInstance().getCurrentUser();
id = currentFirebaseUser.getUid();
setTitle("Edit Profile");
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
name = (EditText) findViewById(R.id.name);
state = (EditText) findViewById(R.id.state);
city = (EditText) findViewById(R.id.city);
bloodgrp = (EditText) findViewById(R.id.bloodgrp);
mobileno = (EditText) findViewById(R.id.mobileno);
email = (EditText) findViewById(R.id.email);
chngpsw.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent i = new Intent(getApplicationContext(), Changepswrd.class);
startActivity(i);
}
});
readData();
if(mylist.size() != 0){
setvalues();
}
//Log.d(TAG, "SIZE IS on Create " + mylist.size());
}
private void readData() {
DatabaseReference ref = FirebaseDatabase.getInstance().getReference().child("Users").child(id);
// Log.d(TAG, "UserID is " + id);
ref.addChildEventListener(new ChildEventListener() {
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String s) {
fetchdata(dataSnapshot);
}
@Override
public void onChildChanged(DataSnapshot dataSnapshot, String s) {
fetchdata(dataSnapshot);
}
@Override
public void onChildRemoved(DataSnapshot dataSnapshot) {
}
@Override
public void onChildMoved(DataSnapshot dataSnapshot, String s) {
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
Log.d(TAG, "Bottom Size : " + mylist.size());
}
private void fetchdata(DataSnapshot dataSnapshot){
String value = dataSnapshot.getValue(String.class);
//Log.d(TAG, "Value is " + value);
mylist.add(value);
Log.d(TAG, "Size : " + mylist.size());
}
private void setvalues(){
bloodgrp.setText(mylist.get(0));
city.setText(mylist.get(1));
email.setText(mylist.get(2));
mobileno.setText(mylist.get(3));
name.setText(mylist.get(4));
state.setText(mylist.get(5));
} }
는
> D/EditProfile: UserID is MkfeHsMuJyaNr5Be8R7eRojHngE2 09-24
> D/EditProfile: Bottom Size : 0
> D/EditProfile: Size : 1
> D/EditProfile: Size : 2
> D/EditProfile: Size : 3
> D/EditProfile: Size : 4
> D/EditProfile: Size : 5
> D/EditProfile: Size : 6
여기
가 중포 기지 데이터베이스
코드를 옮겼습니다. 이제 get (1)을 호출했기 때문에이 오류가 "java.lang.IndexOutOfBoundsException : Index : 1, Size : 1 at java.util.ArrayList.get (ArrayList.java:411)"이고 앱이 중지되었습니다. –
예, '모든 데이터가로드되기 전에 –
'city.setText (mylist.get (1)); ' –