Add Square's LeakCanary

Author: Daniel Novak

sample/build.gradle

@@ -13,6 +13,7 @@ android {
     }
 
     compileOptions {
+        encoding "UTF-8"
         sourceCompatibility JavaVersion.VERSION_1_7
         targetCompatibility JavaVersion.VERSION_1_7
     }
@@ -26,6 +27,8 @@ android {
 
 dependencies {
     compile 'com.android.support:appcompat-v7:22.1.1'
+    debugCompile 'com.squareup.leakcanary:leakcanary-android:1.3'
+    releaseCompile 'com.squareup.leakcanary:leakcanary-android-no-op:1.3'
     compile 'com.jakewharton:butterknife:5.1.2'
     compile project(':library')
 }

sample/src/main/AndroidManifest.xml

@@ -5,6 +5,7 @@
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
+        android:name=".SampleApplication"
         android:label="@string/app_name"
         android:theme="@style/AppTheme" >
         <activity

sample/src/main/java/eu/inloop/viewmodel/sample/SampleApplication.java

@@ -0,0 +1,23 @@
+package eu.inloop.viewmodel.sample;
+
+import android.app.Application;
+import android.content.Context;
+
+import com.squareup.leakcanary.LeakCanary;
+import com.squareup.leakcanary.RefWatcher;
+
+public class SampleApplication extends Application {
+
+    private RefWatcher refWatcher;
+
+    @Override public void onCreate() {
+        super.onCreate();
+        refWatcher = LeakCanary.install(this);
+    }
+
+    public static RefWatcher getRefWatcher(Context context) {
+        SampleApplication application = (SampleApplication) context.getApplicationContext();
+        return application.refWatcher;
+    }
+
+}

sample/src/main/java/eu/inloop/viewmodel/sample/fragment/UserListFragment.java

@@ -10,13 +10,16 @@
 import android.widget.ListView;
 import android.widget.TextView;
 
+import com.squareup.leakcanary.RefWatcher;
+
 import java.util.ArrayList;
 import java.util.List;
 
 import butterknife.ButterKnife;
 import butterknife.InjectView;
 import eu.inloop.viewmodel.base.ViewModelBaseFragment;
 import eu.inloop.viewmodel.sample.R;
+import eu.inloop.viewmodel.sample.SampleApplication;
 import eu.inloop.viewmodel.sample.viewmodel.UserListViewModel;
 import eu.inloop.viewmodel.sample.viewmodel.view.IUserListView;
 
@@ -112,4 +115,13 @@ public void showLoading(float progress) {
     public void hideProgress() {
         mProgressView.setVisibility(View.GONE);
     }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+
+        // watch for memory leaks
+        RefWatcher refWatcher = SampleApplication.getRefWatcher(getActivity());
+        refWatcher.watch(this);
+    }
 }