Base Android implementation

source/funkin/external/android/java/funkin/extension/CallbackUtil.java

@@ -25,10 +25,22 @@ public class CallbackUtil extends Extension
 		CallbackUtil.haxeObject = haxeObject;
 	}
 
+		public static void callMethod(String methodName, Object[] args)
+	{
+		if (haxeObject != null)
+			haxeObject.call(methodName, args);
+	}
+
+	public static void callMethodVoid(String methodName)
+	{
+		if (haxeObject != null)
+			haxeObject.call0(methodName);
+	}
+
   @Override
 	public boolean onActivityResult(int requestCode, int resultCode, Intent data)
 	{
-		if (haxeObject  != null)
+		if (haxeObject != null)
 			haxeObject.call2("onActivityResult", requestCode, resultCode);
 
 		return true;

source/funkin/external/android/java/funkin/extension/FNFCExtension.java

@@ -0,0 +1,80 @@
+package funkin.extensions;
+
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.util.Log;
+
+import funkin.extensions.CallbackUtil;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.URI;
+
+import org.haxe.extension.Extension;
+
+import org.haxe.lime.HaxeObject;
+
+public class FNFCExtension extends Extension
+{
+  public static String launchedFile = null;
+
+  @Override
+  public void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+
+    Intent intent = mainActivity.getIntent();
+    if (intent != null && intent.getData() != null) {
+      handleIntent(intent, false);
+    }
+  }
+
+  @Override
+  public void onNewIntent(Intent intent) {
+    super.onNewIntent(intent);
+
+    if (intent != null && intent.getData() != null) {
+      handleIntent(mainActivity.getIntent(), true);
+    }
+  }
+
+  public static String queryLaunchedFNFC()
+  {
+    return launchedFile;
+  }
+
+
+  private static void handleIntent(Intent intent, boolean doCallback)
+  {
+    if (Intent.ACTION_VIEW.equals(intent.getAction())) {
+      Uri uri = intent.getData();
+      if (uri != null) {
+        File output = new File(mainContext.getCacheDir(), new File("fnfc", uri.getPath()).getName());
+
+        try {
+          InputStream in = mainContext.getContentResolver().openInputStream(uri);
+          OutputStream out = new FileOutputStream(output);
+          byte[] buffer = new byte[8192];
+          int len;
+          while ((len = in.read(buffer)) > 0) {
+            out.write(buffer, 0, len);
+          }
+        }
+        catch (Exception e) {
+            Log.e("Exception", e.getMessage());
+        }
+
+        launchedFile = output.getAbsolutePath();
+
+        if (doCallback)
+        {
+          Object[] args = new Object[1];
+          args[0] = launchedFile;
+          CallbackUtil.callMethod("onOpenFNFC", args);
+        }
+      }
+    }
+  }
+}