diff --git a/.idea/dictionaries/lionel.xml b/.idea/dictionaries/lionel.xml
new file mode 100644
index 0000000..9d95a22
--- /dev/null
+++ b/.idea/dictionaries/lionel.xml
@@ -0,0 +1,7 @@
+<component name="ProjectDictionaryState">
+  <dictionary name="lionel">
+    <words>
+      <w>netdldata</w>
+    </words>
+  </dictionary>
+</component>
\ No newline at end of file
diff --git a/app/src/main/java/com/localtransfer/MainActivity.java b/app/src/main/java/com/localtransfer/MainActivity.java
index 83c1cb7..92f5c89 100644
--- a/app/src/main/java/com/localtransfer/MainActivity.java
+++ b/app/src/main/java/com/localtransfer/MainActivity.java
@@ -87,7 +87,7 @@ public class MainActivity extends AppCompatActivity {
                 tr.handleSendText(sharedText);
             } else {
                 Uri uri = intent.getParcelableExtra(Intent.EXTRA_STREAM);
-                new Thread(() -> tr.handleSendFile(uri)).start();
+                tr.handleSendFile(uri);
             }
         } else if (Intent.ACTION_SEND_MULTIPLE.equals(action) && type != null) {
             viewPager.setCurrentItem(2);
diff --git a/app/src/main/java/com/localtransfer/Progress.java b/app/src/main/java/com/localtransfer/Progress.java
index a9ab623..983ffe5 100644
--- a/app/src/main/java/com/localtransfer/Progress.java
+++ b/app/src/main/java/com/localtransfer/Progress.java
@@ -29,7 +29,7 @@ public class Progress {
     private static NotificationManagerCompat notifiManager = NotificationManagerCompat.from(Transfer.activity);
     private static final LayoutInflater inflater = (LayoutInflater) Transfer.activity.getSystemService(Transfer.activity.LAYOUT_INFLATER_SERVICE);
 
-    private static List instances = new ArrayList();
+    private static List<Progress> instances = new ArrayList<>();
 
     private Integer id;
     private String name;
diff --git a/app/src/main/java/com/localtransfer/SectionsPagerAdapter.java b/app/src/main/java/com/localtransfer/SectionsPagerAdapter.java
index a6f99f0..2944a77 100644
--- a/app/src/main/java/com/localtransfer/SectionsPagerAdapter.java
+++ b/app/src/main/java/com/localtransfer/SectionsPagerAdapter.java
@@ -22,7 +22,7 @@ public class SectionsPagerAdapter extends FragmentPagerAdapter {
     private final Context mContext;
 
     public SectionsPagerAdapter(Context context, FragmentManager fm) {
-        super(fm);
+        super(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT);
         mContext = context;
     }
 
diff --git a/build.gradle b/build.gradle
index 04baf1e..d8d46b9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -17,6 +17,11 @@ allprojects {
         google()
         jcenter()
     }
+    gradle.projectsEvaluated {
+        tasks.withType(JavaCompile) {
+            options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation"
+        }
+    }
 }
 
 task clean(type: Delete) {