#8822 adds leakCanary library to Bitmask for analyzing memory leaks

3 files changed, 45 insertions, 1 deletions

diff --git a/app/build.gradle b/app/build.gradle
index cb865ecd..a71cff57 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -77,6 +77,8 @@ dependencies {
   androidTestCompile 'com.jayway.android.robotium:robotium-solo:5.6.3'
   testCompile 'junit:junit:4.12'
   testCompile 'org.json:json:20170516'
+  debugCompile 'com.squareup.leakcanary:leakcanary-android:1.5.4'
+  releaseCompile 'com.squareup.leakcanary:leakcanary-android-no-op:1.5.4'
   compile 'com.jakewharton:butterknife:6.1.0'
   provided 'com.squareup.dagger:dagger-compiler:1.2.2'
   compile 'com.github.pedrovgs:renderers:1.5'
@@ -92,6 +94,17 @@ dependencies {
   compile 'com.android.support:support-fragment:26.1.0'
 }
 
+// Ensure the no-op dependency is always used in JVM tests.
+configurations.all { config ->
+  if (config.name.contains('UnitTest')) {
+    config.resolutionStrategy.eachDependency { details ->
+      if (details.requested.group == 'com.squareup.leakcanary' && details.requested.name == 'leakcanary-android') {
+        details.useTarget(group: details.requested.group, name: 'leakcanary-android-no-op', version: details.requested.version)
+      }
+    }
+  }
+}
+
 def processFileInplace(file, Closure processText) {
   def text = file.text
   file.write(processText(text))
diff --git a/app/src/main/java/se/leap/bitmaskclient/BitmaskApp.java b/app/src/main/java/se/leap/bitmaskclient/BitmaskApp.java
index 88a01b62..f9e45b79 100644
--- a/app/src/main/java/se/leap/bitmaskclient/BitmaskApp.java
+++ b/app/src/main/java/se/leap/bitmaskclient/BitmaskApp.java
@@ -1,6 +1,10 @@
 package se.leap.bitmaskclient;
 
 import android.app.Application;
+import android.content.Context;
+
+import com.squareup.leakcanary.LeakCanary;
+import com.squareup.leakcanary.RefWatcher;
 
 /**
  * Created by cyberta on 24.10.17.
@@ -8,11 +12,31 @@ import android.app.Application;
 
 public class BitmaskApp extends Application {
 
+    private RefWatcher refWatcher;
+
     @Override
     public void onCreate() {
         super.onCreate();
+        if (LeakCanary.isInAnalyzerProcess(this)) {
+            // This process is dedicated to LeakCanary for heap analysis.
+            // You should not init your app in this process.
+            return;
+        }
+        refWatcher = LeakCanary.install(this);
+        // Normal app init code...*/
         PRNGFixes.apply();
-        //TODO: add LeakCanary!
     }
 
+    /**
+     * Use this method to get a RefWatcher object that checks for memory leaks in the given context.
+     * Call refWatcher.watch(this) to check if all references get garbage collected.
+     * @param context
+     * @return the RefWatcher object
+     */
+    public static RefWatcher getRefWatcher(Context context) {
+        BitmaskApp application = (BitmaskApp) context.getApplicationContext();
+        return application.refWatcher;
+    }
+
+
 }
diff --git a/app/src/main/java/se/leap/bitmaskclient/drawer/NavigationDrawerFragment.java b/app/src/main/java/se/leap/bitmaskclient/drawer/NavigationDrawerFragment.java
index 566134dd..84c407d7 100644
--- a/app/src/main/java/se/leap/bitmaskclient/drawer/NavigationDrawerFragment.java
+++ b/app/src/main/java/se/leap/bitmaskclient/drawer/NavigationDrawerFragment.java
@@ -36,6 +36,7 @@ import se.leap.bitmaskclient.fragments.LogFragment;
 import se.leap.bitmaskclient.userstatus.User;
 import se.leap.bitmaskclient.userstatus.UserStatusFragment;
 
+import static se.leap.bitmaskclient.BitmaskApp.getRefWatcher;
 import static se.leap.bitmaskclient.Constants.REQUEST_CODE_SWITCH_PROVIDER;
 import static se.leap.bitmaskclient.Constants.SHARED_PREFERENCES;
 
@@ -287,6 +288,12 @@ public class NavigationDrawerFragment extends Fragment {
         return super.onOptionsItemSelected(item);
     }
 
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        getRefWatcher(getActivity()).watch(this);
+    }
+
     /**
      * Per the navigation drawer design guidelines, updates the action bar to show the global app
      * 'context', rather than just what's in the current screen.