realm · beeender · Mar 20, 2017
diff --git a/adapters/build.gradle b/adapters/build.gradle
@@ -16,6 +16,10 @@ android {
         targetSdkVersion sdkVersion
         project.archivesBaseName = "android-adapters"
     }
+
+    dataBinding {
+        enabled = true
+    }
 }
 
 dependencies {

diff --git a/adapters/src/main/java/io/realm/RealmObjectDataBindingListener.java b/adapters/src/main/java/io/realm/RealmObjectDataBindingListener.java
@@ -0,0 +1,72 @@
+package io.realm;
+
+import android.app.Activity;
+import android.databinding.BaseObservable;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public abstract class RealmObjectDataBindingListener<T> implements RealmObjectChangeListener<T> {
+
+    private final BaseObservable observable;
+    private final List<String> fieldNames;
+    private final List<Integer> fieldIds;
+
+    private RealmObjectDataBindingListener(BaseObservable observable,
+                                           List<String> fieldNames, List<Integer> fieldIds) {
+        this.observable = observable;
+        this.fieldNames = fieldNames;
+        this.fieldIds = fieldIds;
+    }
+
+    @Override
+    public void onChange(T t, ObjectChangeSet objectChangeSet) {
+        if (objectChangeSet.isDeleted()) {
+            onDeleted();
+            return;
+        }
+
+        for (ObjectChangeSet.FieldChange fieldChange : objectChangeSet.getFieldChanges()) {
+            int index = fieldNames.indexOf(fieldChange.fieldName);
+            if (index != -1) {
+                 observable.notifyPropertyChanged(fieldIds.get(index));
+            }
+        }
+    }
+
+    public abstract void onDeleted();
+
+
+    public static class Builder<T> {
+        private BaseObservable observable;
+        private List<String> fieldNames = new ArrayList<String>();
+        private List<Integer> fieldIds = new ArrayList<Integer>();
+        private Runnable runnable = null;
+
+        public Builder(BaseObservable observable) {
+            this.observable = observable;
+        }
+
+        public Builder observe(String fieldName, int fieldId) {
+            fieldNames.add(fieldName);
+            fieldIds.add(fieldId);
+            return this;
+        }
+
+        public Builder onDeleted(Runnable runnable) {
+            this.runnable = runnable;
+            return this;
+        }
+
+        public RealmObjectDataBindingListener<T> build() {
+            return new RealmObjectDataBindingListener<T>(observable, fieldNames, fieldIds) {
+                @Override
+                public void onDeleted() {
+                    if (runnable != null)  {
+                        runnable.run();
+                    }
+                }
+            };
+        }
+    }
+}
diff --git a/build.gradle b/build.gradle
@@ -4,15 +4,13 @@ buildscript {
     ext {
         sdkVersion = 25
         buildTools = '25.0.0'
-        realmVersion = '3.0.0'
+        realmVersion = '3.1.0-SNAPSHOT'
         supportLibraryVersion = '25.2.0'
     }
 
     repositories {
         jcenter()
-        maven {
-            url 'http://oss.jfrog.org/artifactory/oss-snapshot-local'
-        }
+        mavenLocal()
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:2.3.0'                    // Android Build tools
@@ -35,9 +33,7 @@ allprojects {
     version = file("${rootDir}/version.txt").text.trim();
     repositories {
         jcenter()
-        maven {
-            url 'http://oss.jfrog.org/artifactory/oss-snapshot-local'
-        }
+        mavenLocal()
     }
 }
 

diff --git a/example/build.gradle b/example/build.gradle
@@ -21,10 +21,15 @@ android {
     command {
         events 2000
     }
+
+    dataBinding {
+        enabled = true
+    }
 }
 
 dependencies {
     compile project(':adapters')
     compile "com.android.support:appcompat-v7:${supportLibraryVersion}"
     compile "com.android.support:recyclerview-v7:${supportLibraryVersion}"
+    compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha5'
 }
diff --git a/example/src/main/AndroidManifest.xml b/example/src/main/AndroidManifest.xml
@@ -7,13 +7,13 @@
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:theme="@style/AppTheme">
-
         <activity
-            android:name="io.realm.examples.adapters.MainActivity"
+            android:name=".MainActivity"
             android:configChanges="keyboardHidden|orientation|screenSize"
             android:label="@string/app_name">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
+
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
@@ -23,6 +23,14 @@
         <activity
             android:name=".ui.recyclerview.RecyclerViewExampleActivity"
             android:label="RecyclerView Example"/>
+        <activity
+            android:name=".ui.databinding.OwnerListActivity"
+            android:label="@string/title_activity_owner_list">
+        </activity>
+        <activity
+            android:name=".ui.databinding.OwnerDetailsActivity"
+            android:label="@string/title_activity_owner_details">
+        </activity>
     </application>
 
 </manifest>
diff --git a/example/src/main/java/io/realm/examples/adapters/MainActivity.java b/example/src/main/java/io/realm/examples/adapters/MainActivity.java
@@ -22,6 +22,7 @@
 import android.support.v7.app.AppCompatActivity;
 import android.view.View;
 
+import io.realm.examples.adapters.ui.databinding.OwnerListActivity;
 import io.realm.examples.adapters.ui.listview.ListViewExampleActivity;
 import io.realm.examples.adapters.ui.recyclerview.RecyclerViewExampleActivity;
 
@@ -35,6 +36,7 @@ protected void onCreate(Bundle savedInstanceState) {
 
         setupButton(R.id.button_listview, ListViewExampleActivity.class);
         setupButton(R.id.button_recyclerview, RecyclerViewExampleActivity.class);
+        setupButton(R.id.button_data_binding, OwnerListActivity.class);
     }
 
     void startActivity(Class<? extends Activity> activityClass) {

diff --git a/example/src/main/java/io/realm/examples/adapters/model/DataHelper.java b/example/src/main/java/io/realm/examples/adapters/model/DataHelper.java
@@ -65,4 +65,15 @@ public void execute(Realm realm) {
             }
         });
     }
+
+    public static void addOwnerAsync(Realm realm, final int count) {
+        realm.executeTransactionAsync(new Realm.Transaction() {
+            @Override
+            public void execute(Realm realm) {
+                for (int i = 0; i < count; i++) {
+                    realm.copyToRealm(Owner.create());
+                }
+            }
+        });
+    }
 }
diff --git a/example/src/main/java/io/realm/examples/adapters/model/Dog.java b/example/src/main/java/io/realm/examples/adapters/model/Dog.java
@@ -0,0 +1,15 @@
+package io.realm.examples.adapters.model;
+
+import io.realm.RealmObject;
+
+public class Dog extends RealmObject {
+    private String name;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}
diff --git a/example/src/main/java/io/realm/examples/adapters/model/Owner.java b/example/src/main/java/io/realm/examples/adapters/model/Owner.java
@@ -0,0 +1,46 @@
+package io.realm.examples.adapters.model;
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+import io.realm.RealmObject;
+import io.realm.annotations.PrimaryKey;
+
+public class Owner extends RealmObject {
+    @PrimaryKey
+    private int id;
+    private String name;
+    private Dog dog;
+
+    private static AtomicInteger counter = new AtomicInteger(0);
+
+    public int getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Dog getDog() {
+        return dog;
+    }
+
+    public void setDog(Dog dog) {
+        this.dog = dog;
+    }
+
+    public static Owner create() {
+        int id = counter.getAndIncrement();
+        Dog dog = new Dog();
+        dog.setName("Dog-" + id);
+        Owner owner = new Owner();
+        owner.id = id;
+        owner.setName("Owner-" + id);
+        owner.setDog(dog);
+        return owner;
+    }
+}
diff --git a/example/src/main/java/io/realm/examples/adapters/ui/databinding/OwnerDetailsActivity.java b/example/src/main/java/io/realm/examples/adapters/ui/databinding/OwnerDetailsActivity.java
@@ -0,0 +1,54 @@
+package io.realm.examples.adapters.ui.databinding;
+
+import android.databinding.DataBindingUtil;
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+
+import io.realm.Realm;
+import io.realm.RealmObjectDataBindingListener;
+import io.realm.examples.adapters.R;
+import io.realm.examples.adapters.databinding.ActivityOwnerDetailsBinding;
+import io.realm.examples.adapters.model.Dog;
+import io.realm.examples.adapters.model.Owner;
+
+public class OwnerDetailsActivity extends AppCompatActivity {
+
+    public static String EXTRA_DATA_OWNER_ID = "owner_id";
+
+    private Realm realm;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        realm = Realm.getDefaultInstance();
+        int id = getIntent().getIntExtra(EXTRA_DATA_OWNER_ID, -1);
+        Owner owner = realm.where(Owner.class).equalTo("id", id).findFirst();
+        Dog dog = owner.getDog();
+
+        final ActivityOwnerDetailsBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_owner_details);
+        binding.setOwner(owner);
+        binding.setDog(owner.getDog());
+
+        owner.addChangeListener(
+                new RealmObjectDataBindingListener.Builder<Owner>(binding)
+                        .observe("name", R.id.owner_name_text_edit)
+                        .onDeleted(new Runnable() {
+                            @Override
+                            public void run() {
+                                finish();
+                            }
+                        })
+                        .build());
+        dog.addChangeListener(
+                new RealmObjectDataBindingListener.Builder<Dog>(binding)
+                        .observe("name", R.id.dog_name_text_edit)
+                        .build());
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        realm.close();
+    }
+}
diff --git a/example/src/main/java/io/realm/examples/adapters/ui/databinding/OwnerListActivity.java b/example/src/main/java/io/realm/examples/adapters/ui/databinding/OwnerListActivity.java
@@ -0,0 +1,64 @@
+package io.realm.examples.adapters.ui.databinding;
+
+import android.os.Bundle;
+import android.app.Activity;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.LinearLayoutManager;
+import android.support.v7.widget.RecyclerView;
+import android.view.Menu;
+import android.view.MenuItem;
+
+import io.realm.Realm;
+import io.realm.RealmResults;
+import io.realm.examples.adapters.R;
+import io.realm.examples.adapters.model.DataHelper;
+import io.realm.examples.adapters.model.Owner;
+import io.realm.examples.adapters.ui.DividerItemDecoration;
+
+public class OwnerListActivity extends AppCompatActivity {
+
+    private Realm realm;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_owner_list);
+        realm = Realm.getDefaultInstance();
+
+        setUpRecyclerView((RecyclerView) findViewById(R.id.recycler_view));
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        realm.close();
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.owner_list_view_options, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        int id = item.getItemId();
+        switch (id) {
+            case R.id.action_add:
+                DataHelper.addOwnerAsync(realm, 1);
+                return true;
+            default:
+                break;
+        }
+        return false;
+    }
+
+    private void setUpRecyclerView(RecyclerView recyclerView) {
+        RealmResults<Owner> results = realm.where(Owner.class).findAllAsync();
+        OwnerListViewAdapter adapter = new OwnerListViewAdapter(results);
+
+        recyclerView.setLayoutManager(new LinearLayoutManager(this));
+        recyclerView.setAdapter(adapter);
+        recyclerView.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL_LIST));
+    }
+}