平時(shí)大家跳轉(zhuǎn)頁(yè)面，我們模態(tài)跳轉(zhuǎn)到某個(gè)頁(yè)面使用

[selfpresentViewController:<#(nonnull UIViewController *)#> animated:<#(BOOL)#> completion:<#^(void)completion#>]

返回時(shí)使用對(duì)應(yīng)的返回方法

[selfdismissViewControllerAnimated:YEScompletion:nil];

push跳轉(zhuǎn)頁(yè)面使用

[self.navigationController pushViewController:<#(nonnull UIViewController *)#> animated:<#(BOOL)#>]

對(duì)應(yīng)的返回方法為

[self.navigationControllerpopViewControllerAnimated:YES];

這里提出一個(gè)場(chǎng)景：從頁(yè)面A可以模態(tài)跳轉(zhuǎn)到公共頁(yè)面M,從頁(yè)面B也可以push跳轉(zhuǎn)到頁(yè)面M，那么頁(yè)面M相應(yīng)的返回按鈕應(yīng)該怎么實(shí)現(xiàn)，這里我給出一個(gè)解決方案:

給公共頁(yè)面M聲明一個(gè)屬性：

@property(nonatomic,assign)BOOLmark;

//a.從頁(yè)面A跳轉(zhuǎn)到公共頁(yè)面M

M* mainDetailVC = [[Malloc]init];

mainDetailVC.mark=YES;

UINavigationController*navc = [[UINavigationControlleralloc]initWithRootViewController:mainDetailVC];

[selfpresentViewController:navcanimated:YEScompletion:nil];

//b.從頁(yè)面B跳轉(zhuǎn)到公共頁(yè)面M

M* mainDetailVC = [[Malloc]init];

[self.navigationControllerpushViewController:mainDetailVCanimated:NO];

最后一步：在控制器M中實(shí)現(xiàn)返回按鈕，需要兩種返回方法

- (void)viewWillAppear:(BOOL)animated {

//判斷是模態(tài)過(guò)來(lái)的還是push過(guò)來(lái)的，對(duì)應(yīng)創(chuàng)建相應(yīng)的返回按鈕及方法

if(self.mark==YES) {

UIBarButtonItem*btn = [[UIBarButtonItemalloc]initWithTitle:@"返回"style:(UIBarButtonItemStylePlain)target:selfaction:@selector(clickback:)];

self.navigationItem.leftBarButtonItem= btn;

}

else{UIBarButtonItem*btn = [[UIBarButtonItemalloc]initWithTitle:@"返回"style:(UIBarButtonItemStylePlain)target:selfaction:@selector(clickbacktwo:)];

self.navigationItem.leftBarButtonItem= btn;

}

}

//模態(tài)返回方法，如果是模態(tài)過(guò)來(lái)的就會(huì)使用此方法返回

- (void)clickback:(UIBarButtonItem*)but {

[selfdismissViewControllerAnimated:YEScompletion:nil];

}

//pop返回方法，如果是push過(guò)來(lái)的就會(huì)使用此方法

- (void)clickbacktwo:(UIBarButtonItem*)but {

[self.navigationControllerpopViewControllerAnimated:YES];

}