Added ShortcutActivity class to respond to homescreen shortcut intent.

It will show file dialog and return path to selected file as intent response.

android/src/org/ppsspp/ppsspp/ShortcutActivity.java

@@ -0,0 +1,64 @@
+package org.ppsspp.ppsspp;
+
+import java.io.File;
+
+import com.henrikrydgard.libnative.NativeActivity;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.content.Intent.ShortcutIconResource;
+import android.os.Bundle;
+import android.os.Environment;
+
+/**
+ * This class will respond to android.intent.action.CREATE_SHORTCUT intent from
+ * launcher homescreen. Register this class in AndroidManifest.xml.
+ */
+public class ShortcutActivity extends Activity {
+
+	@Override
+	protected void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+
+		// Show file selector dialog here.
+		SimpleFileChooser fileDialog = new SimpleFileChooser(this,
+				Environment.getExternalStorageDirectory(),
+				onFileSelectedListener);
+		fileDialog.showDialog();
+	}
+
+	// Create shortcut as response for ACTION_CREATE_SHORTCUT intent.
+	private void respondToShortcutRequest(String path) {
+		// This is Intent that will be sent when user execute our shortcut on
+		// homescreen. Set our app as target Context. Set Main activity as
+		// target class. Add any parameter to extra.
+		Intent shortcutIntent = new Intent(this, PpssppActivity.class);
+		shortcutIntent.putExtra(NativeActivity.SHORTCUT_EXTRA_KEY, path);
+
+		// This is Intent that will be returned by this method, as response to
+		// ACTION_CREATE_SHORTCUT. Wrap shortcut intent inside this intent.
+		Intent responseIntent = new Intent();
+		responseIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
+		responseIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME, getResources()
+				.getString(R.string.app_name));
+
+		ShortcutIconResource iconResource = Intent.ShortcutIconResource
+				.fromContext(this, R.drawable.ic_launcher);
+		responseIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE,
+				iconResource);
+
+		setResult(RESULT_OK, responseIntent);
+
+		// Must call finish for result to be returned immediately
+		finish();
+	}
+
+	// Event when a file is selected on file dialog.
+	private SimpleFileChooser.FileSelectedListener onFileSelectedListener = new SimpleFileChooser.FileSelectedListener() {
+		public void onFileSelected(File file) {
+			// create shortcut using file path
+			respondToShortcutRequest(file.getAbsolutePath());
+		}
+	};
+
+}