Add debug option to disable LeakCanary

app/build.gradle

@@ -110,7 +110,7 @@ final DAGGER_VERSION = '2.16'
 final BUTTERKNIFE_VERSION = '9.0.0-rc1'
 final STETHO_VERSION = '1.5.0'
 final WORK_VERSION = '1.0.0-alpha10'
-final LEAKCANARY_VERSION = '1.6.1'
+final LEAKCANARY_VERSION = '1.6.2'
 
 dependencies {
     implementation project(":dav4android")

app/src/debug/java/org/tasks/BuildSetup.java

@@ -30,7 +30,9 @@ public class BuildSetup {
     if (LeakCanary.isInAnalyzerProcess(context)) {
       return false;
     }
-    LeakCanary.install(application);
+    if (preferences.getBoolean(R.string.p_leak_canary, false)) {
+      LeakCanary.install(application);
+    }
     if (preferences.getBoolean(R.string.p_strict_mode, false)) {
       StrictMode.setThreadPolicy(
           new StrictMode.ThreadPolicy.Builder()

app/src/main/res/values/keys.xml

@@ -276,6 +276,7 @@
 
   <string name="debug_consume">Consume</string>
   <string name="debug_strict_mode">Strict mode</string>
+  <string name="debug_leak_canary">LeakCanary</string>
   <string name="debug_pro">Unlock pro</string>
   <string name="debug_buy">Buy</string>
   <string name="debug">Debug</string>
@@ -284,6 +285,7 @@
   <string name="p_background_sync">gtask_background_sync</string>
   <string name="p_bundle_notifications">bundle_notifications</string>
   <string name="p_strict_mode">strict_mode</string>
+  <string name="p_leak_canary">leak_canary</string>
   <string name="p_debug_pro">debug_pro</string>
   <string name="warned_play_services">warned_play_services</string>
   <string name="p_background_sync_unmetered_only">background_sync_unmetered_only</string>

app/src/main/res/xml/preferences_debug.xml

@@ -4,6 +4,10 @@
   <PreferenceCategory
     android:title="@string/debug">
 
+    <CheckBoxPreference
+      android:key="@string/p_leak_canary"
+      android:title="@string/debug_leak_canary" />
+
     <CheckBoxPreference
       android:key="@string/p_strict_mode"
       android:title="@string/debug_strict_mode"/>