gistfile1.txt

@SuppressLint("InlinedApi")
	public static void launchApp(final String packageName,final String activityName,final String key,final String value){
		if(packageName==null||activityName==null) return ;
		UnityPlayer.currentActivity.runOnUiThread(new Runnable() {
			@Override
			public void run() {
				
				try{
					final PackageManager pm = UnityPlayer.currentActivity.getPackageManager();
					Intent launchIntent = pm.getLaunchIntentForPackage(packageName);
					if(launchIntent!=null){
						launchIntent.putExtra(key, value);
						UnityPlayer.currentActivity.startActivity(launchIntent);
						return;
					}
				}catch(Exception e){}
				//Otherwise open google play
				UnityPlayer.currentActivity.startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id="+packageName)));
			}
		});
	}