Sync button, prevented concurrent sync

app/src/main/java/it/danieleverducci/lunatracker/MainActivity.kt

@@ -35,6 +35,7 @@ class MainActivity : AppCompatActivity() {
     lateinit var progressIndicator: LinearProgressIndicator
     lateinit var recyclerView: RecyclerView
     lateinit var handler: Handler
+    var savingEvent = false
     val updateListRunnable: Runnable = Runnable {
         loadLogbook()
         handler.postDelayed(updateListRunnable, 1000*60)
@@ -92,6 +93,12 @@ class MainActivity : AppCompatActivity() {
         findViewById<View>(R.id.button_settings).setOnClickListener({
             showSettings()
         })
+        findViewById<View>(R.id.button_no_connection_retry).setOnClickListener({
+            loadLogbook()
+        })
+        findViewById<View>(R.id.button_sync).setOnClickListener({
+            loadLogbook()
+        })
     }
 
     fun showSettings() {
@@ -167,12 +174,16 @@ class MainActivity : AppCompatActivity() {
     }
 
     fun loadLogbook() {
+        if (savingEvent)
+            return
+
         // Load data
         progressIndicator.visibility = View.VISIBLE
         logbookRepo.loadLogbook(this, object: LogbookLoadedListener{
             override fun onLogbookLoaded(lb: Logbook) {
                 runOnUiThread({
                     progressIndicator.visibility = View.INVISIBLE
+                    findViewById<View>(R.id.no_connection_screen).visibility = View.GONE
                     logbook = lb
                     showLogbook()
                 })
@@ -192,6 +203,7 @@ class MainActivity : AppCompatActivity() {
     }
 
     fun logEvent(event: LunaEvent) {
+        savingEvent = true
         adapter.items.add(0, event)
         adapter.notifyItemInserted(0)
         recyclerView.smoothScrollToPosition(0)
@@ -205,6 +217,7 @@ class MainActivity : AppCompatActivity() {
                     progressIndicator.visibility = View.INVISIBLE
 
                     Toast.makeText(this@MainActivity, R.string.toast_event_added, Toast.LENGTH_SHORT).show()
+                    savingEvent = false
                 })
             }
 
@@ -216,6 +229,7 @@ class MainActivity : AppCompatActivity() {
                     Toast.makeText(this@MainActivity, R.string.toast_event_add_error, Toast.LENGTH_SHORT).show()
                     adapter.items.remove(event)
                     adapter.notifyDataSetChanged()
+                    savingEvent = false
                 })
             }
 

app/src/main/res/drawable/ic_sync.xml

@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M12,4L12,1L8,5l4,4L12,6c3.31,0 6,2.69 6,6 0,1.01 -0.25,1.97 -0.7,2.8l1.46,1.46C19.54,15.03 20,13.57 20,12c0,-4.42 -3.58,-8 -8,-8zM12,18c-3.31,0 -6,-2.69 -6,-6 0,-1.01 0.25,-1.97 0.7,-2.8L5.24,7.74C4.46,8.97 4,10.43 4,12c0,4.42 3.58,8 8,8v3l4,-4 -4,-4v3z"/>
+    
+</vector>

app/src/main/res/layout/activity_main.xml

@@ -151,10 +151,19 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:padding="10dp"
-        android:layout_gravity="right"
+        android:layout_gravity="end"
         android:src="@drawable/ic_settings"
         app:tint="@color/grey"/>
 
+    <ImageView
+        android:id="@+id/button_sync"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:padding="10dp"
+        android:layout_gravity="start"
+        android:src="@drawable/ic_sync"
+        app:tint="@color/grey"/>
+
     <LinearLayout
         android:id="@+id/no_connection_screen"
         android:layout_width="match_parent"
@@ -188,12 +197,27 @@
             android:gravity="center_horizontal"
             android:text="@string/no_connection_explain"/>
 
+        <Button
+            android:id="@+id/button_no_connection_retry"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp"
+            android:drawableLeft="@drawable/ic_sync"
+            android:drawableTint="@color/white"
+            android:drawablePadding="10dp"
+            android:text="@string/no_connection_retry"
+            android:textColor="@color/white"/>
+
         <Button
             android:id="@+id/button_no_connection_settings"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginTop="20dp"
-            android:text="@string/no_connection_go_to_settings"/>
+            android:drawableLeft="@drawable/ic_settings"
+            android:drawableTint="@color/white"
+            android:drawablePadding="10dp"
+            android:text="@string/no_connection_go_to_settings"
+            android:textColor="@color/white"/>
 
     </LinearLayout>
 

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

@@ -41,6 +41,7 @@
     <string name="no_connection">Nessuna connessione</string>
     <string name="no_connection_explain">Impossibile raggiungere il servizio WebDAV</string>
     <string name="no_connection_go_to_settings">Impostazioni</string>
+    <string name="no_connection_retry">Riprova</string>
 
     <string name="settings_title">Impostazioni</string>
     <string name="settings_storage">Scegli dove l\'app salva i dati</string>