avoid multiple instances

app/release/output-metadata.json

@@ -0,0 +1,20 @@
+{
+  "version": 3,
+  "artifactType": {
+    "type": "APK",
+    "kind": "Directory"
+  },
+  "applicationId": "asgardius.page.s3manager",
+  "variantName": "release",
+  "elements": [
+    {
+      "type": "SINGLE",
+      "filters": [],
+      "attributes": [],
+      "versionCode": 28,
+      "versionName": "0.1.26",
+      "outputFile": "s3-manager-0.1.26-release.apk"
+    }
+  ],
+  "elementType": "File"
+}

app/src/main/AndroidManifest.xml

@@ -90,6 +90,7 @@
             android:supportsPictureInPicture="true"
             android:configChanges="orientation|keyboardHidden|screenSize|smallestScreenSize|screenLayout|uiMode|keyboardHidden"
             android:exported="false"
+            android:launchMode="singleTask"
             android:theme="@style/Theme.AsgardiusS3Manager.NoActionBar" />
         <activity
             android:name=".MainActivity"

app/src/main/java/asgardius/page/s3manager/VideoPlayer.java

@@ -224,6 +224,7 @@ public class VideoPlayer extends AppCompatActivity {
             player.release();
             playerView.setPlayer(null);
             simpleCache.release();
+            finish();
         }
         super.onStop();
     }

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

@@ -70,7 +70,7 @@
                 android:layout_width="match_parent"
                 android:layout_height="70dp"
                 android:text="@string/save_settings"
-                android:textColor="#ffffff"
+                android:textColor="?android:attr/colorBackground"
                 android:textSize="24sp" />
 
             <Button
@@ -78,7 +78,7 @@
                 android:layout_width="match_parent"
                 android:layout_height="70dp"
                 android:text="@string/about_button"
-                android:textColor="#ffffff"
+                android:textColor="?android:attr/colorBackground"
                 android:textSize="24sp" />
 
         </LinearLayout>

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

@@ -91,4 +91,5 @@
     <string name="videotime">Tiempo de expiración para visor multimedia (en horas)</string>
     <string name="buffersize">Tamaño del buffer del reproductor multimedia (en milisegundos)</string>
     <string name="buffersize_error">El tamaño del búfer debe ser de al menos 2001 milisegundos</string>
+    <string name="mediaplayer_multierror">Solo se puede reproducir un archivo multimedia a la vez</string>
 </resources>

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

@@ -95,4 +95,5 @@
     <string name="videotime">Expiration time for media viewer (in hours)</string>
     <string name="buffersize">Media player buffer size (in milliseconds)</string>
     <string name="buffersize_error">Buffer size must be at least 2001 milliseconds</string>
+    <string name="mediaplayer_multierror">Only one media file can be played at once</string>
 </resources>