Add showToastAlert from Tegra Subactivity

android/phoenix/src/org/retroarch/browser/RetroActivity.java

@@ -2,6 +2,7 @@ package org.retroarch.browser;
 
 import android.app.NativeActivity;
 import android.os.Bundle;
+import android.widget.Toast;
 
 public class RetroActivity extends NativeActivity {
 	public RetroActivity() {
@@ -20,4 +21,20 @@ public class RetroActivity extends NativeActivity {
 	@Override
 	public void onTrimMemory(int level) {
 	}
+	
+    // We call this function from native to display a toast string
+    public void showToastAlert(String text)
+    {
+		// We need to use a runnable here to ensure that when the spawned
+		// native_app_glue thread calls, we actually post the work to the UI
+		// thread.  Otherwise, we'll likely get exceptions because there's no
+		// prepared Looper on the native_app_glue main thread.
+    	final String finalText = text;
+    	runOnUiThread(new Runnable() {
+    		public void run()
+			{
+		    	Toast.makeText(getApplicationContext(), finalText, Toast.LENGTH_SHORT).show();
+			}
+        });
+    }
 }