RUM-9899: Adding special button to for sending manual span

Author: satween

sample/kotlin/src/main/kotlin/com/datadog/android/sample/traces/TracesFragment.kt

@@ -18,6 +18,7 @@ import androidx.fragment.app.Fragment
 import androidx.lifecycle.ViewModelProviders
 import com.datadog.android.sample.R
 import com.datadog.android.sample.SampleApplication
+import com.datadog.android.trace.withinSpan
 
 internal class TracesFragment : Fragment(), View.OnClickListener {
 
@@ -36,6 +37,7 @@ internal class TracesFragment : Fragment(), View.OnClickListener {
     ): View? {
         val rootView = inflater.inflate(R.layout.fragment_traces, container, false)
         rootView.findViewById<Button>(R.id.start_async_operation).setOnClickListener(this)
+        rootView.findViewById<Button>(R.id.send_span).setOnClickListener(this)
         rootView.findViewById<Button>(R.id.start_coroutine_operation).setOnClickListener(this)
         rootView.findViewById<Button>(R.id.start_request).setOnClickListener(this)
         rootView.findViewById<Button>(R.id.start_404_request).setOnClickListener(this)
@@ -88,6 +90,11 @@ internal class TracesFragment : Fragment(), View.OnClickListener {
                     }
                 )
             }
+            R.id.send_span -> {
+                withinSpan(MANUAL_SPAN_MESSAGE) {
+                    // Do nothing
+                }
+            }
             R.id.start_coroutine_operation -> {
                 progressBarCoroutine.visibility = View.VISIBLE
                 progressBarCoroutine.isIndeterminate = true
@@ -153,6 +160,7 @@ internal class TracesFragment : Fragment(), View.OnClickListener {
     // endregion
 
     companion object {
+        private const val MANUAL_SPAN_MESSAGE = "Manual span"
         fun newInstance(): TracesFragment {
             return TracesFragment()
         }

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

@@ -48,6 +48,17 @@
         app:layout_constraintTop_toBottomOf="@id/start_async_operation"
         android:visibility="invisible"/>
 
+    <androidx.appcompat.widget.AppCompatButton
+        android:id="@+id/send_span"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_margin="16dp"
+        android:text="@string/button_send_span"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/spinner_async" />
+
+
     <androidx.appcompat.widget.AppCompatTextView
         android:id="@+id/coroutine_operation"
         android:layout_width="0dp"
@@ -59,7 +70,7 @@
         android:textAppearance="@style/TextAppearance.AppCompat.Medium"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/spinner_async"/>
+        app:layout_constraintTop_toBottomOf="@id/send_span"/>
 
     <androidx.appcompat.widget.AppCompatButton
         android:id="@+id/start_coroutine_operation"

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

@@ -61,6 +61,7 @@
     <string name="button_async_operation">Async Operation</string>
     <string name="button_network_request">Network Request</string>
     <string name="button_start">Start</string>
+    <string name="button_send_span">Send manual span</string>
     <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>