DismissTo 到 指定页面
DismissTo 到 上一级的上一级页面
- (IBAction)backRootBtn:(UIButton *)sender {
UIViewController * tempVCtrl = self.presentingViewController;
if(tempVCtrl.presentingViewController) {
tempVCtrl = tempVCtrl.presentingViewController;
}
[tempVCtrl dismissViewControllerAnimated: YES completion: nil ];
}
DismissTo 到 Root页面
- (IBAction)backRootBtn:(UIButton *)sender {
UIViewController * tempVCtrl = self.presentingViewController;
while (tempVCtrl.presentingViewController) {
tempVCtrl = tempVCtrl.presentingViewController;
}
[tempVCtrl dismissViewControllerAnimated: YES completion: nil ];
}
Pop 到 指定页面
A
你初始化一个视图控制器干嘛啊？占不占内存啊？你也没用啊。
int index = (int)[[self.navigationController viewControllers]indexOfObject:self];
[self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:(index -2)] animated:YES];
B
HomeViewController *homeVC = [[HomeViewController alloc] init];
UIViewController *target = nil;
for (UIViewController * controller in self.navigationController.viewControllers) { //遍历
if ([controller isKindOfClass:[homeVC class]]) { //这里判断是否为你想要跳转的页面
target = controller;
}
}
if (target) {
[self.navigationController popToViewController:target animated:YES]; //跳转
}
那如何获取自己的viewController处于第几级啊？这个是不固定的？？？？
for (UIViewController* v in [UIApplication sharedApplication].windows) {
NSLog(@"%@",[v class]);
}
1、自己记住
2、遍历viewControllers
