Created
November 28, 2019 10:44
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Cloud Firestore CRUD / Create Read Update Delete
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<?xml version="1.0" encoding="utf-8"?> | |
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" | |
xmlns:app="http://schemas.android.com/apk/res-auto" | |
xmlns:tools="http://schemas.android.com/tools" | |
android:layout_width="match_parent" | |
android:layout_height="match_parent" | |
android:orientation="vertical" | |
android:padding="16dp" | |
tools:context=".FirestoreActivity"> | |
<EditText | |
android:id="@+id/edit_title" | |
android:hint="Title" | |
android:layout_marginBottom="10dp" | |
android:layout_width="match_parent" | |
android:layout_height="wrap_content" /> | |
<EditText | |
android:layout_width="match_parent" | |
android:layout_height="wrap_content" | |
android:id="@+id/edit_description" | |
android:hint="Description" | |
android:layout_marginBottom="10dp"/> | |
<LinearLayout | |
android:layout_height="wrap_content" | |
android:layout_width="match_parent" | |
android:orientation="horizontal"> | |
<Button | |
android:layout_width="wrap_content" | |
android:layout_height="wrap_content" | |
android:id="@+id/btn_add" | |
android:text="Add" | |
android:onClick="addNote" /> | |
<Button | |
android:layout_width="wrap_content" | |
android:layout_height="wrap_content" | |
android:id="@+id/btn_update" | |
android:text="Edit" | |
android:onClick="editNote" /> | |
<Button | |
android:layout_width="wrap_content" | |
android:layout_height="wrap_content" | |
android:id="@+id/btn_delete" | |
android:text="Delete" | |
android:onClick="deleteNote" /> | |
</LinearLayout> | |
<ListView | |
android:id="@+id/list_note" | |
android:layout_height="wrap_content" | |
android:layout_width="match_parent" | |
/> | |
</LinearLayout> |
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package com.vokasi.firebaseb; | |
import androidx.annotation.NonNull; | |
import androidx.appcompat.app.AppCompatActivity; | |
import android.os.Bundle; | |
import android.view.View; | |
import android.widget.AdapterView; | |
import android.widget.ArrayAdapter; | |
import android.widget.EditText; | |
import android.widget.ListView; | |
import android.widget.Toast; | |
import com.google.android.gms.tasks.OnFailureListener; | |
import com.google.android.gms.tasks.OnSuccessListener; | |
import com.google.firebase.firestore.CollectionReference; | |
import com.google.firebase.firestore.DocumentReference; | |
import com.google.firebase.firestore.EventListener; | |
import com.google.firebase.firestore.FirebaseFirestore; | |
import com.google.firebase.firestore.FirebaseFirestoreException; | |
import com.google.firebase.firestore.QueryDocumentSnapshot; | |
import com.google.firebase.firestore.QuerySnapshot; | |
import java.util.ArrayList; | |
import java.util.HashMap; | |
import java.util.List; | |
import java.util.Map; | |
import javax.annotation.Nullable; | |
public class FirestoreActivity extends AppCompatActivity { | |
FirebaseFirestore db = FirebaseFirestore.getInstance(); | |
CollectionReference note_ref = db.collection("notes"); | |
EditText edit_title; | |
EditText edit_description; | |
ListView list_note; | |
ArrayList<Note> note_item = new ArrayList<>(); | |
NoteAdapter adapter; | |
private String selectedId; | |
@Override | |
protected void onCreate(Bundle savedInstanceState) { | |
super.onCreate(savedInstanceState); | |
setContentView(R.layout.activity_firestore); | |
edit_title = findViewById(R.id.edit_title); | |
edit_description = findViewById(R.id.edit_description); | |
list_note = findViewById(R.id.list_note); | |
list_note.setOnItemClickListener(new AdapterView.OnItemClickListener() { | |
@Override | |
public void onItemClick(AdapterView<?> parent, View view, int position, long id) { | |
Note note = adapter.getItem(position); | |
edit_title.setText(note.getTitle()); | |
edit_description.setText(note.getDescription()); | |
selectedId = note.getDocId(); | |
} | |
}); | |
} | |
@Override | |
protected void onStart() { | |
super.onStart(); | |
note_ref.addSnapshotListener(this, new EventListener<QuerySnapshot>() { | |
@Override | |
public void onEvent(@Nullable QuerySnapshot queryDocumentSnapshots, @Nullable FirebaseFirestoreException e) { | |
if (e != null){ | |
return; | |
} | |
note_item.clear(); | |
for(QueryDocumentSnapshot documentSnapshot: queryDocumentSnapshots){ | |
Note note = documentSnapshot.toObject(Note.class); | |
note.setDocId(documentSnapshot.getId()); | |
note_item.add(note); | |
} | |
adapter = new NoteAdapter(FirestoreActivity.this,note_item); | |
adapter.notifyDataSetChanged(); | |
list_note.setAdapter(adapter); | |
} | |
}); | |
} | |
public void addNote(View view){ | |
String title = edit_title.getText().toString(); | |
String description = edit_description.getText().toString(); | |
Map<String, Object> user = new HashMap<>(); | |
user.put("title", title); | |
user.put("description", description); | |
note_ref.add(user) | |
.addOnSuccessListener(new OnSuccessListener<DocumentReference>() { | |
@Override | |
public void onSuccess(DocumentReference documentReference) { | |
edit_title.setText(null); | |
edit_description.setText(null); | |
Toast.makeText(FirestoreActivity.this, "Success", Toast.LENGTH_LONG).show(); | |
} | |
}) | |
.addOnFailureListener(new OnFailureListener() { | |
@Override | |
public void onFailure(@NonNull Exception e) { | |
Toast.makeText(FirestoreActivity.this, "Error"+e, Toast.LENGTH_LONG).show(); | |
} | |
}); | |
} | |
public void editNote(View view){ | |
String title = edit_title.getText().toString(); | |
String description = edit_description.getText().toString(); | |
Note note = new Note(title,description); | |
note_ref.document(selectedId).set(note) | |
.addOnSuccessListener(new OnSuccessListener<Void>() { | |
@Override | |
public void onSuccess(Void aVoid) { | |
edit_title.setText(null); | |
edit_description.setText(null); | |
Toast.makeText(FirestoreActivity.this, "Updated ", Toast.LENGTH_LONG).show(); | |
} | |
}) | |
.addOnFailureListener(new OnFailureListener() { | |
@Override | |
public void onFailure(@NonNull Exception e) { | |
Toast.makeText(FirestoreActivity.this, "Error "+e, Toast.LENGTH_LONG).show(); | |
} | |
}); | |
} | |
public void deleteNote(View view){ | |
note_ref.document(selectedId).delete() | |
.addOnSuccessListener(new OnSuccessListener<Void>() { | |
@Override | |
public void onSuccess(Void aVoid) { | |
edit_title.setText(null); | |
edit_description.setText(null); | |
Toast.makeText(FirestoreActivity.this, "Deleted ", Toast.LENGTH_LONG).show(); | |
} | |
}) | |
.addOnFailureListener(new OnFailureListener() { | |
@Override | |
public void onFailure(@NonNull Exception e) { | |
Toast.makeText(FirestoreActivity.this, "Error "+e, Toast.LENGTH_LONG).show(); | |
} | |
}); | |
} | |
} | |
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<?xml version="1.0" encoding="utf-8"?> | |
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" | |
android:layout_width="match_parent" | |
android:layout_height="match_parent"> | |
<TextView | |
android:id="@+id/note_id" | |
android:layout_width="match_parent" | |
android:layout_height="wrap_content" /> | |
<TextView android:id="@+id/note_title" | |
android:layout_width="match_parent" | |
android:layout_height="wrap_content" | |
android:layout_alignBaseline="@id/note_id" | |
android:layout_alignParentRight="true" | |
android:textAlignment="textEnd" | |
/> | |
<TextView android:id="@+id/note_description" | |
android:layout_width="match_parent" | |
android:layout_height="wrap_content" | |
android:layout_below="@id/note_id" | |
/> | |
</RelativeLayout> |
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package com.vokasi.firebaseb; | |
public class Note { | |
String docId; | |
String title; | |
String description; | |
public Note() { | |
} | |
public Note(String title, String description) { | |
this.title = title; | |
this.description = description; | |
} | |
public String getDocId() { | |
return docId; | |
} | |
public void setDocId(String docId) { | |
this.docId = docId; | |
} | |
public String getTitle() { | |
return title; | |
} | |
public void setTitle(String title) { | |
this.title = title; | |
} | |
public String getDescription() { | |
return description; | |
} | |
public void setDescription(String description) { | |
this.description = description; | |
} | |
} |
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package com.vokasi.firebaseb; | |
import android.app.Activity; | |
import android.content.Context; | |
import android.view.View; | |
import android.view.ViewGroup; | |
import android.widget.ArrayAdapter; | |
import android.widget.TextView; | |
import org.w3c.dom.Text; | |
import java.util.ArrayList; | |
public class NoteAdapter extends ArrayAdapter<Note> { | |
public NoteAdapter(Context context,ArrayList<Note> notes) { | |
super(context, 0, notes); | |
} | |
public View getView(int position,View convertView, ViewGroup parent){ | |
if (convertView ==null){ | |
convertView = ((Activity)getContext()).getLayoutInflater().inflate(R.layout.list_note,parent,false); | |
} | |
TextView note_id = (TextView) convertView.findViewById(R.id.note_id); | |
TextView note_title = (TextView) convertView.findViewById(R.id.note_title); | |
TextView note_description = (TextView) convertView.findViewById(R.id.note_description); | |
Note note = getItem(position); | |
note_id.setText(note.getDocId()); | |
note_title.setText(note.getTitle()); | |
note_description.setText(note.getDescription()); | |
return convertView; | |
} | |
} |
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