├── .gitignore
├── .idea
├── gradle.xml
├── misc.xml
├── modules.xml
└── runConfigurations.xml
├── app
├── .gitignore
├── build.gradle
├── google-services.json
├── proguard-rules.pro
└── src
│ ├── androidTest
│ └── java
│ │ └── net
│ │ └── simplifiedcoding
│ │ └── firebasequeryexample
│ │ └── ExampleInstrumentedTest.java
│ ├── main
│ ├── AndroidManifest.xml
│ ├── java
│ │ └── net
│ │ │ └── simplifiedcoding
│ │ │ └── firebasequeryexample
│ │ │ ├── Artist.java
│ │ │ ├── ArtistsAdapter.java
│ │ │ └── MainActivity.java
│ └── res
│ │ ├── drawable-v24
│ │ └── ic_launcher_foreground.xml
│ │ ├── drawable
│ │ └── ic_launcher_background.xml
│ │ ├── layout
│ │ ├── activity_main.xml
│ │ └── recyclerview_artists.xml
│ │ ├── mipmap-anydpi-v26
│ │ ├── ic_launcher.xml
│ │ └── ic_launcher_round.xml
│ │ ├── mipmap-hdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-mdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-xhdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-xxhdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-xxxhdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ └── values
│ │ ├── colors.xml
│ │ ├── strings.xml
│ │ └── styles.xml
│ └── test
│ └── java
│ └── net
│ └── simplifiedcoding
│ └── firebasequeryexample
│ └── ExampleUnitTest.java
├── build.gradle
├── gradle.properties
├── gradle
└── wrapper
│ ├── gradle-wrapper.jar
│ └── gradle-wrapper.properties
├── gradlew
├── gradlew.bat
└── settings.gradle
/.gitignore:
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1 | *.iml
2 | .gradle
3 | /local.properties
4 | /.idea/workspace.xml
5 | /.idea/libraries
6 | .DS_Store
7 | /build
8 | /captures
9 | .externalNativeBuild
10 |
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/.idea/runConfigurations.xml:
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/app/.gitignore:
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1 | /build
2 |
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/app/build.gradle:
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1 | apply plugin: 'com.android.application'
2 |
3 | android {
4 | compileSdkVersion 26
5 | defaultConfig {
6 | applicationId "net.simplifiedcoding.firebasequeryexample"
7 | minSdkVersion 21
8 | targetSdkVersion 26
9 | versionCode 1
10 | versionName "1.0"
11 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
12 | }
13 | buildTypes {
14 | release {
15 | minifyEnabled false
16 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
17 | }
18 | }
19 | }
20 |
21 | dependencies {
22 | implementation fileTree(include: ['*.jar'], dir: 'libs')
23 | implementation 'com.android.support:appcompat-v7:26.1.0'
24 | implementation 'com.android.support.constraint:constraint-layout:1.0.2'
25 | implementation 'com.google.firebase:firebase-database:11.0.4'
26 | testImplementation 'junit:junit:4.12'
27 | androidTestImplementation 'com.android.support.test:runner:1.0.1'
28 | androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
29 | implementation 'com.android.support:cardview-v7:26.1.0'
30 | implementation 'com.android.support:recyclerview-v7:26.1.0'
31 | }
32 |
33 |
34 | apply plugin: 'com.google.gms.google-services'
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/app/google-services.json:
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1 | {
2 | "project_info": {
3 | "project_number": "344512514439",
4 | "firebase_url": "https://fir-example-68a95.firebaseio.com",
5 | "project_id": "fir-example-68a95",
6 | "storage_bucket": "fir-example-68a95.appspot.com"
7 | },
8 | "client": [
9 | {
10 | "client_info": {
11 | "mobilesdk_app_id": "1:344512514439:android:0dd1c3c9a6012248",
12 | "android_client_info": {
13 | "package_name": "net.simplifiedcoding.firebaseauthdemo"
14 | }
15 | },
16 | "oauth_client": [
17 | {
18 | "client_id": "344512514439-kjbb8sfao6rni67najqcnebtvqc231b2.apps.googleusercontent.com",
19 | "client_type": 3
20 | }
21 | ],
22 | "api_key": [
23 | {
24 | "current_key": "AIzaSyDg9x9kLXLV-sdmxG527DX8NA6jaPuLUDc"
25 | }
26 | ],
27 | "services": {
28 | "analytics_service": {
29 | "status": 1
30 | },
31 | "appinvite_service": {
32 | "status": 1,
33 | "other_platform_oauth_client": []
34 | },
35 | "ads_service": {
36 | "status": 2
37 | }
38 | }
39 | },
40 | {
41 | "client_info": {
42 | "mobilesdk_app_id": "1:344512514439:android:00c7c7378b1e3b00",
43 | "android_client_info": {
44 | "package_name": "net.simplifiedcoding.firebasedemo"
45 | }
46 | },
47 | "oauth_client": [
48 | {
49 | "client_id": "344512514439-7i4giacuf7gsrqt3jmvua5rqusssai5j.apps.googleusercontent.com",
50 | "client_type": 1,
51 | "android_info": {
52 | "package_name": "net.simplifiedcoding.firebasedemo",
53 | "certificate_hash": "f81969332184dcea8cc2d3028c172989d423bc16"
54 | }
55 | },
56 | {
57 | "client_id": "344512514439-kjbb8sfao6rni67najqcnebtvqc231b2.apps.googleusercontent.com",
58 | "client_type": 3
59 | }
60 | ],
61 | "api_key": [
62 | {
63 | "current_key": "AIzaSyDg9x9kLXLV-sdmxG527DX8NA6jaPuLUDc"
64 | }
65 | ],
66 | "services": {
67 | "analytics_service": {
68 | "status": 1
69 | },
70 | "appinvite_service": {
71 | "status": 2,
72 | "other_platform_oauth_client": [
73 | {
74 | "client_id": "344512514439-kjbb8sfao6rni67najqcnebtvqc231b2.apps.googleusercontent.com",
75 | "client_type": 3
76 | }
77 | ]
78 | },
79 | "ads_service": {
80 | "status": 2
81 | }
82 | }
83 | },
84 | {
85 | "client_info": {
86 | "mobilesdk_app_id": "1:344512514439:android:11340ddff27a19e2",
87 | "android_client_info": {
88 | "package_name": "net.simplifiedcoding.firebasequeryexample"
89 | }
90 | },
91 | "oauth_client": [
92 | {
93 | "client_id": "344512514439-hn0r92u9pstqrm3qchcu31gll2l4hubj.apps.googleusercontent.com",
94 | "client_type": 1,
95 | "android_info": {
96 | "package_name": "net.simplifiedcoding.firebasequeryexample",
97 | "certificate_hash": "f81969332184dcea8cc2d3028c172989d423bc16"
98 | }
99 | },
100 | {
101 | "client_id": "344512514439-kjbb8sfao6rni67najqcnebtvqc231b2.apps.googleusercontent.com",
102 | "client_type": 3
103 | }
104 | ],
105 | "api_key": [
106 | {
107 | "current_key": "AIzaSyDg9x9kLXLV-sdmxG527DX8NA6jaPuLUDc"
108 | }
109 | ],
110 | "services": {
111 | "analytics_service": {
112 | "status": 1
113 | },
114 | "appinvite_service": {
115 | "status": 2,
116 | "other_platform_oauth_client": [
117 | {
118 | "client_id": "344512514439-kjbb8sfao6rni67najqcnebtvqc231b2.apps.googleusercontent.com",
119 | "client_type": 3
120 | }
121 | ]
122 | },
123 | "ads_service": {
124 | "status": 2
125 | }
126 | }
127 | },
128 | {
129 | "client_info": {
130 | "mobilesdk_app_id": "1:344512514439:android:73757003dfa1100a",
131 | "android_client_info": {
132 | "package_name": "net.simplifiedcoding.firebaseregistrationlogin"
133 | }
134 | },
135 | "oauth_client": [
136 | {
137 | "client_id": "344512514439-kjbb8sfao6rni67najqcnebtvqc231b2.apps.googleusercontent.com",
138 | "client_type": 3
139 | }
140 | ],
141 | "api_key": [
142 | {
143 | "current_key": "AIzaSyDg9x9kLXLV-sdmxG527DX8NA6jaPuLUDc"
144 | }
145 | ],
146 | "services": {
147 | "analytics_service": {
148 | "status": 1
149 | },
150 | "appinvite_service": {
151 | "status": 1,
152 | "other_platform_oauth_client": []
153 | },
154 | "ads_service": {
155 | "status": 2
156 | }
157 | }
158 | }
159 | ],
160 | "configuration_version": "1"
161 | }
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/app/proguard-rules.pro:
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1 | # Add project specific ProGuard rules here.
2 | # You can control the set of applied configuration files using the
3 | # proguardFiles setting in build.gradle.
4 | #
5 | # For more details, see
6 | # http://developer.android.com/guide/developing/tools/proguard.html
7 |
8 | # If your project uses WebView with JS, uncomment the following
9 | # and specify the fully qualified class name to the JavaScript interface
10 | # class:
11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
12 | # public *;
13 | #}
14 |
15 | # Uncomment this to preserve the line number information for
16 | # debugging stack traces.
17 | #-keepattributes SourceFile,LineNumberTable
18 |
19 | # If you keep the line number information, uncomment this to
20 | # hide the original source file name.
21 | #-renamesourcefileattribute SourceFile
22 |
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/app/src/androidTest/java/net/simplifiedcoding/firebasequeryexample/ExampleInstrumentedTest.java:
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1 | package net.simplifiedcoding.firebasequeryexample;
2 |
3 | import android.content.Context;
4 | import android.support.test.InstrumentationRegistry;
5 | import android.support.test.runner.AndroidJUnit4;
6 |
7 | import org.junit.Test;
8 | import org.junit.runner.RunWith;
9 |
10 | import static org.junit.Assert.*;
11 |
12 | /**
13 | * Instrumented test, which will execute on an Android device.
14 | *
15 | * @see Testing documentation
16 | */
17 | @RunWith(AndroidJUnit4.class)
18 | public class ExampleInstrumentedTest {
19 | @Test
20 | public void useAppContext() throws Exception {
21 | // Context of the app under test.
22 | Context appContext = InstrumentationRegistry.getTargetContext();
23 |
24 | assertEquals("net.simplifiedcoding.firebasequeryexample", appContext.getPackageName());
25 | }
26 | }
27 |
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/app/src/main/AndroidManifest.xml:
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/app/src/main/java/net/simplifiedcoding/firebasequeryexample/Artist.java:
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1 | package net.simplifiedcoding.firebasequeryexample;
2 |
3 | /**
4 | * Created by Belal on 4/17/2018.
5 | */
6 |
7 | public class Artist {
8 |
9 | public String id, name, genre;
10 | public int age;
11 | public String country;
12 |
13 | public Artist() {
14 | }
15 | }
16 |
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/app/src/main/java/net/simplifiedcoding/firebasequeryexample/ArtistsAdapter.java:
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1 | package net.simplifiedcoding.firebasequeryexample;
2 |
3 | import android.content.Context;
4 | import android.support.annotation.NonNull;
5 | import android.support.v7.widget.RecyclerView;
6 | import android.view.LayoutInflater;
7 | import android.view.View;
8 | import android.view.ViewGroup;
9 | import android.widget.TextView;
10 |
11 | import java.util.List;
12 |
13 | /**
14 | * Created by Belal on 4/17/2018.
15 | */
16 |
17 | public class ArtistsAdapter extends RecyclerView.Adapter {
18 |
19 | private Context mCtx;
20 | private List artistList;
21 |
22 | public ArtistsAdapter(Context mCtx, List artistList) {
23 | this.mCtx = mCtx;
24 | this.artistList = artistList;
25 | }
26 |
27 | @NonNull
28 | @Override
29 | public ArtistViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
30 | View view = LayoutInflater.from(mCtx).inflate(R.layout.recyclerview_artists, parent, false);
31 | return new ArtistViewHolder(view);
32 | }
33 |
34 | @Override
35 | public void onBindViewHolder(@NonNull ArtistViewHolder holder, int position) {
36 | Artist artist = artistList.get(position);
37 | holder.textViewName.setText(artist.name);
38 | holder.textViewGenre.setText("Genre: " + artist.genre);
39 | holder.textViewAge.setText("Age: " + artist.age);
40 | holder.textViewCountry.setText("Country: " + artist.country);
41 | }
42 |
43 | @Override
44 | public int getItemCount() {
45 | return artistList.size();
46 | }
47 |
48 | class ArtistViewHolder extends RecyclerView.ViewHolder {
49 |
50 | TextView textViewName, textViewGenre, textViewAge, textViewCountry;
51 |
52 | public ArtistViewHolder(@NonNull View itemView) {
53 | super(itemView);
54 |
55 | textViewName = itemView.findViewById(R.id.text_view_name);
56 | textViewGenre = itemView.findViewById(R.id.text_view_genre);
57 | textViewAge = itemView.findViewById(R.id.text_view_age);
58 | textViewCountry = itemView.findViewById(R.id.text_view_country);
59 | }
60 | }
61 | }
62 |
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/app/src/main/java/net/simplifiedcoding/firebasequeryexample/MainActivity.java:
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1 | package net.simplifiedcoding.firebasequeryexample;
2 |
3 | import android.support.v7.app.AppCompatActivity;
4 | import android.os.Bundle;
5 | import android.support.v7.widget.LinearLayoutManager;
6 | import android.support.v7.widget.RecyclerView;
7 |
8 | import com.google.firebase.database.DataSnapshot;
9 | import com.google.firebase.database.DatabaseError;
10 | import com.google.firebase.database.DatabaseReference;
11 | import com.google.firebase.database.FirebaseDatabase;
12 | import com.google.firebase.database.Query;
13 | import com.google.firebase.database.ValueEventListener;
14 |
15 | import java.util.ArrayList;
16 | import java.util.List;
17 |
18 | public class MainActivity extends AppCompatActivity {
19 |
20 | private RecyclerView recyclerView;
21 | private ArtistsAdapter adapter;
22 | private List artistList;
23 |
24 | DatabaseReference dbArtists;
25 |
26 | @Override
27 | protected void onCreate(Bundle savedInstanceState) {
28 | super.onCreate(savedInstanceState);
29 | setContentView(R.layout.activity_main);
30 |
31 | recyclerView = findViewById(R.id.recyclerView);
32 | recyclerView.setHasFixedSize(true);
33 | recyclerView.setLayoutManager(new LinearLayoutManager(this));
34 | artistList = new ArrayList<>();
35 | adapter = new ArtistsAdapter(this, artistList);
36 | recyclerView.setAdapter(adapter);
37 |
38 | //1. SELECT * FROM Artists
39 | dbArtists = FirebaseDatabase.getInstance().getReference("Artists");
40 |
41 | //2. SELECT * FROM Artists WHERE id = "-LAJ7xKNj4UdBjaYr8Ju"
42 | Query query = FirebaseDatabase.getInstance().getReference("Artists")
43 | .orderByChild("id")
44 | .equalTo("-LAJ7xKNj4UdBjaYr8Ju");
45 |
46 | //3. SELECT * FROM Artists WHERE country = "India"
47 | Query query3 = FirebaseDatabase.getInstance().getReference("Artists")
48 | .orderByChild("country")
49 | .equalTo("India");
50 |
51 | //4. SELECT * FROM Artists LIMIT 2
52 | Query query4 = FirebaseDatabase.getInstance().getReference("Artists").limitToFirst(2);
53 |
54 |
55 | //5. SELECT * FROM Artists WHERE age < 30
56 | Query query5 = FirebaseDatabase.getInstance().getReference("Artists")
57 | .orderByChild("age")
58 | .endAt(29);
59 |
60 |
61 | //6. SELECT * FROM Artists WHERE name = "A%"
62 | Query query6 = FirebaseDatabase.getInstance().getReference("Artists")
63 | .orderByChild("name")
64 | .startAt("A")
65 | .endAt("A\uf8ff");
66 |
67 | ;
68 | /*
69 | * You just need to attach the value event listener to read the values
70 | * for example
71 | * query6.addListenerForSingleValueEvent(valueEventListener)
72 | * */
73 | }
74 |
75 |
76 |
77 | ValueEventListener valueEventListener = new ValueEventListener() {
78 | @Override
79 | public void onDataChange(DataSnapshot dataSnapshot) {
80 | artistList.clear();
81 | if (dataSnapshot.exists()) {
82 | for (DataSnapshot snapshot : dataSnapshot.getChildren()) {
83 | Artist artist = snapshot.getValue(Artist.class);
84 | artistList.add(artist);
85 | }
86 | adapter.notifyDataSetChanged();
87 | }
88 | }
89 |
90 | @Override
91 | public void onCancelled(DatabaseError databaseError) {
92 |
93 | }
94 | };
95 | }
96 |
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/app/src/main/res/drawable-v24/ic_launcher_foreground.xml:
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