RUM-10621 Add sample app clear button

Author: maciejburda

sample/kotlin/src/main/kotlin/com/datadog/android/sample/Preferences.kt

@@ -151,6 +151,17 @@ internal object Preferences {
                 .apply()
         }
 
+        fun clearUserCredentials() {
+            PreferenceManager.getDefaultSharedPreferences(applicationContext)
+                .edit()
+                .remove(PREF_USR_ID)
+                .remove(PREF_USR_NAME)
+                .remove(PREF_USR_EMAIL)
+                .remove(PREF_USR_GENDER)
+                .remove(PREF_USR_AGE)
+                .apply()
+        }
+
         fun setTrackingConsent(consent: TrackingConsent) {
             PreferenceManager.getDefaultSharedPreferences(applicationContext)
                 .edit()

sample/kotlin/src/main/kotlin/com/datadog/android/sample/user/UserFragment.kt

@@ -40,6 +40,7 @@ internal class UserFragment : Fragment(), View.OnClickListener {
         userGenderField = rootView.findViewById(R.id.user_gender)
         userAgeField = rootView.findViewById(R.id.user_age)
         rootView.findViewById<View>(R.id.save_user).setOnClickListener(this)
+        rootView.findViewById<View>(R.id.clear_user).setOnClickListener(this)
         return rootView
     }
 
@@ -58,24 +59,47 @@ internal class UserFragment : Fragment(), View.OnClickListener {
     // region View.OnClickListener
 
     override fun onClick(v: View) {
-        withinSpan("updateUserInfo") {
-            val id: String = idField.text.toString()
-            val name: String = nameField.text.toString()
-            val email: String = emailField.text.toString()
-            val gender: String = userGenderField.text.toString()
-            val age: Int = Integer.valueOf(userAgeField.text.toString())
-            Preferences.defaultPreferences(requireContext())
-                .setUserCredentials(id, name, email, gender, age)
-            Datadog.setUserInfo(id, name, email, emptyMap())
-            Datadog.addUserProperties(
-                mapOf<String, Any>(
-                    GENDER_KEY to gender,
-                    AGE_KEY to age
-                )
-            )
-            log("Updated user info")
+        when (v.id) {
+            R.id.save_user -> {
+                withinSpan("updateUserInfo") {
+                    val id: String = idField.text.toString()
+                    val name: String = nameField.text.toString()
+                    val email: String = emailField.text.toString()
+                    val gender: String = userGenderField.text.toString()
+                    val age: Int = Integer.valueOf(userAgeField.text.toString())
+                    Preferences.defaultPreferences(requireContext())
+                        .setUserCredentials(id, name, email, gender, age)
+                    Datadog.setUserInfo(id, name, email, emptyMap())
+                    Datadog.addUserProperties(
+                        mapOf<String, Any>(
+                            GENDER_KEY to gender,
+                            AGE_KEY to age
+                        )
+                    )
+                    log("Updated user info")
+                }
+                Snackbar.make(view ?: v.rootView, "User info updated", Snackbar.LENGTH_SHORT).show()
+            }
+            R.id.clear_user -> {
+                withinSpan("clearUserInfo") {
+                    // Clear preferences
+                    Preferences.defaultPreferences(requireContext()).clearUserCredentials()
+                    
+                    // Clear Datadog user info
+                    Datadog.clearUserInfo()
+                    
+                    // Clear UI fields
+                    idField.text.clear()
+                    nameField.text.clear()
+                    emailField.text.clear()
+                    userGenderField.text.clear()
+                    userAgeField.text.clear()
+                    
+                    log("Cleared user info")
+                }
+                Snackbar.make(view ?: v.rootView, "User info cleared", Snackbar.LENGTH_SHORT).show()
+            }
         }
-        Snackbar.make(view ?: v.rootView, "User info updated", Snackbar.LENGTH_SHORT).show()
     }
 
     // endregion

sample/kotlin/src/main/res/layout/fragment_user.xml

@@ -78,6 +78,18 @@
         android:layout_gravity="center_horizontal"
         android:layout_margin="8dp"
         app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/clear_user"
+        app:layout_constraintTop_toBottomOf="@id/user_age"
+    />
+
+    <androidx.appcompat.widget.AppCompatButton
+        android:id="@+id/clear_user"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:text="@string/button_clear"
+        android:layout_gravity="center_horizontal"
+        android:layout_margin="8dp"
+        app:layout_constraintStart_toEndOf="@+id/save_user"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintTop_toBottomOf="@id/user_age"
     />

sample/kotlin/src/main/res/values/strings.xml

@@ -64,6 +64,7 @@
     <string name="button_start_sse">Start Server Sent Event Request</string>
     <string name="button_start_404">Start 404 Request</string>
     <string name="button_save">Save</string>
+    <string name="button_clear">Clear</string>
     <string name="button_long_task">Long Task</string>
     <string name="button_frozen_frame">Frozen Frame</string>
     <string name="button_slow_frame_rate">Slow frame rate</string>