Added comments and summaries to ApkInstall.java

app/src/main/java/com/MartyrPher/smapiandroidinstaller/ApkInstall.java

@@ -10,35 +10,58 @@ import android.support.v4.content.FileProvider;
 
 import java.io.File;
 
+/**
+ * Allows the new app to be installed
+ */
 public class ApkInstall {
 
+    //The MainActivity context
     private static Context context;
 
+    /**
+     * Constructor that sets the context
+     * @param appContext = The activites context
+     */
     public ApkInstall(Context appContext)
     {
         this.context = appContext;
     }
 
+    /**
+     * Installs the new app by starting a new intent
+     */
     public void installNewStardew()
     {
+        //The path of the lastly generated APK
         String newApkPath = Environment.getExternalStorageDirectory() + "/SMAPI Installer/base_signed.apk";
 
+        //Create a new intent with ACTION_VIEW
         Intent intent = new Intent(Intent.ACTION_VIEW);
+
+        //Set the data and type and add flags
         intent.setDataAndType(fromFile(new File(newApkPath)), "application/vnd.android.package-archive");
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
         intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
         try
         {
+            //Start the install Activity
             context.startActivity(intent);
         }
         catch (ActivityNotFoundException e)
         {
+            //Show a dialog with the error
             DialogFrag.showDialog(context, R.string.install, 1);
         }
     }
 
+    /**
+     * Gets the URI from a file
+     * @param file = The file to try and get the URI from
+     * @return The URI for the file
+     */
     private Uri fromFile(File file)
     {
+        //Android versions greater than Nougat use FileProvider, others use the URI.fromFile.
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
             return FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID + ".provider", file);
         else