support Opt users out of tracking

app/src/main/java/com/money/manager/ex/MmexApplication.java

@@ -143,17 +143,16 @@ public void onCreate() {
         // Job Manager initialization.
         initializeJobManager();
 
-        getOrCreateUUID(this);
-
         mAmplitude = AmplitudeKt.Amplitude("1e1fbc10354400d9c3392a89558d693d"
                 , getApplicationContext()
                 , configuration -> {
-                    configuration.setDefaultTracking(DefaultTrackingOptions.ALL);;
+                    configuration.setDefaultTracking(DefaultTrackingOptions.ALL);
+                    configuration.setOptOut(new AppSettings(this).getGeneralSettings().getSendUsage());
                     return Unit.INSTANCE;
                 }
         );
 
-        mAmplitude.setDeviceId(getOrCreateUUID(getApplicationContext()));
+        mAmplitude.setDeviceId(getOrCreateUUID(this));
     }
 
     public static String getOrCreateUUID(Context context) {

app/src/main/java/com/money/manager/ex/settings/GeneralSettings.java

@@ -92,4 +92,7 @@ public Integer getBaseCurrencytId() {
         return NumericHelper.toInteger(value);
     }
 
+    public boolean getSendUsage() {
+        return get(R.string.pref_anonymous_usage, true);
+    }
 }

app/src/main/java/com/money/manager/ex/settings/GeneralSettingsFragment.java

@@ -21,7 +21,9 @@
 import androidx.preference.ListPreference;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceFragmentCompat;
+import androidx.preference.SwitchPreferenceCompat;
 
+import com.money.manager.ex.MmexApplication;
 import com.money.manager.ex.R;
 import com.money.manager.ex.home.MainActivity;
 
@@ -113,6 +115,18 @@ public boolean onPreferenceChange(Preference preference, Object newValue) {
                 }
             });
         }
+
+        // send anonymous usage data
+        final SwitchPreferenceCompat spreference = (SwitchPreferenceCompat) findPreference(getString(R.string.pref_anonymous_usage));
+        if (spreference == null) {
+            spreference.setOnPreferenceChangeListener((preference, newValue) -> {
+                // Handle the switch state change
+                boolean isChecked = (Boolean) newValue;
+                MmexApplication.getAmplitude().getConfiguration().setOptOut(isChecked);
+                // Add your logic here based on the switch state
+                return true; // Return true to persist the preference change
+            });
+        }
     }
 
     public void setSummaryListPreference(Preference preference, String value, int idArrayValues, int idArrayItems) {

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

@@ -779,4 +779,7 @@
     <string name="currency">Currency</string>
     <string name="menu_create_database">Create Database</string>
     <string name="create_database">Create Database</string>
+    <string name="pref_anonymous_usage">prefanonymoususage</string>
+    <string name="summary_anonymous_usage">Enable to help us sending anonymous data about MMEX usage</string>
+    <string name="title_anonymous_usage">Send anonymous usage data</string>
 </resources>

app/src/main/res/xml/preferences_general.xml

@@ -52,5 +52,11 @@
         android:entryValues="@array/new_transaction_dialog_values"
         android:key="@string/pref_default_payee"
         android:title="@string/default_payee" />
+    <SwitchPreferenceCompat
+        android:icon="@null"
+        android:defaultValue="true"
+        android:key="@string/pref_anonymous_usage"
+        android:title="@string/title_anonymous_usage"
+        android:summary="@string/summary_anonymous_usage" />
 
 </PreferenceScreen>