Android Quick Tip: Enabling and Disabling BroadcastReceivers at Runtime http://www.grokkingandroid.com/enabling-and-disabling-broadcastreceivers/

EnableComponent.java

PackageManager pm = getPackageManager();

ComponentName newComposer = new ComponentName(getApplicationContext(), ComposerActivity.class);
pm.setComponentEnabledSetting(
        newComposer,
        is_new_composer ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED : PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
        PackageManager.DONT_KILL_APP);

ComponentName oldComposer = new ComponentName(getApplicationContext(), SendSMSActivity.class);
pm.setComponentEnabledSetting(
        oldComposer,
        is_new_composer ? PackageManager.COMPONENT_ENABLED_STATE_DISABLED : PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
        PackageManager.DONT_KILL_APP);