ionic2 pop多层页面

public static popToPage( navCtrl : NavController, page : string) : boolean {

let views = navCtrl. getViews()

for ( let i = 0; i < views.length; i ++) {

if (views[i].id == page) {

let view : ViewController = views[i];

navCtrl. remove(view.index + 1, navCtrl. getActive().index - view.index);

return true;

}

}

return false;

}

public static removeToPage( navCtrl : NavController, page : string) : boolean {

let views = navCtrl. getViews()

for ( let i = 0; i < views.length; i ++) {

if (views[i].id == page) {

let view : ViewController = views[i];

navCtrl. remove(view.index + 1, views.length - (view.index + 1));

return true;

}

}

return false;

}