Show version name in settings, fix progress bar when purchase ended wit error

android/app/src/main/java/com/dinect/checker/MainActivity.java

@@ -19,6 +19,7 @@ import android.Manifest;
 import android.content.pm.PackageManager;
 import android.support.v4.content.ContextCompat;
 import android.support.v4.app.ActivityCompat;
+import android.content.pm.PackageInfo;
 
 import java.util.*;
 
@@ -99,12 +100,25 @@ public class MainActivity extends FlutterActivity {
                 Log.d("kifio", call.method);
                 finish();
                 break;
+            case "getVersionName":
+                result.success(getVersion());
+                break;
             default:
                 result.notImplemented();
                 break;
         }
     }
 
+    private String getVersion() {
+      try {
+        PackageInfo pInfo = this.getPackageManager().getPackageInfo(getPackageName(), 0);
+        return pInfo.versionName;
+      } catch (PackageManager.NameNotFoundException e) {
+        e.printStackTrace();
+        return "";
+      }
+    }
+
     private String getLanguage() {
         List<String> availableLanguages = Arrays.asList("ru", "en");
         if (availableLanguages.contains(Locale.getDefault().getLanguage())) {
@@ -233,6 +247,10 @@ public class MainActivity extends FlutterActivity {
 
     }
 
+    public void getVersionName() {
+
+    }
+
     public void setStrings() {
 
     }