Developer Libraries » Trusted Intents

import android.app.Activity;

import android.content.ActivityNotFoundException;

        if (!isIntentSane(intent))

    private boolean isIntentSane(Intent intent) {

        if (intent == null)

            return false;

        String packageName = intent.getPackage();

        if (TextUtils.isEmpty(packageName))

            return false;

        return true;

    }

    public void startActivity(Activity activity, Intent intent) throws CertificateException {

        if (!isIntentSane(intent))

            throw new ActivityNotFoundException("The intent was null or empty!");

        String packageName = intent.getPackage();

        try {

            checkTrustedSigner(packageName);

        } catch (NameNotFoundException e) {

            e.printStackTrace();

            throw new ActivityNotFoundException(e.getLocalizedMessage());

        }

        activity.startActivity(intent);

    }