本篇文章写写得到推送的时候，获得当前显示vc的方法，，ios开发如何获得当前vc
刚开始干开发，那想法就是一个，实现功能， 然而到了后期，实现功能一经没有什么太大的乐趣了，这时候编程的乐趣来自如何高效的实现功能， 下面说一说做推送的时候得到数据，不用广播而是得到当前的vc或者说的到某一个vc的对象，开放加方法去做一些数据处理，接下来直接上代码
获得当前vc
1.以UITabBarController这种形式为工程基本框架的
if ([userInfo[@"extras"][@"PushType"] intValue] == 4 || [userInfo[@"extras"][@"PushType"] intValue] == 5) {
UITabBarController *main = ((UITabBarController*)self.window.rootViewController).selectedViewController;
if ([[main.viewControllers lastObject] isKindOfClass:NSClassFromString(@"DeviceViewController")]) {//设备页面
NSLog(@"DeviceViewController");
DeviceViewController *deviceVC = (DeviceViewController *)[main.viewControllers lastObject];
[deviceVC refreshTem:userInfo[@"extras"]];
NSLog(@"%@",deviceVC.whereVC);
}else if ([[main.viewControllers lastObject] isKindOfClass:NSClassFromString(@"DeviceDetailViewController")]) {
DeviceDetailViewController *deviceVC = (DeviceDetailViewController *)[main.viewControllers lastObject];
[deviceVC jpushRefreshWith:userInfo[@"extras"]];
NSLog(@"DeviceDetailViewController");
}
}
2以 UISubNavigationController或者UINavigationController为框架的结构
UISubNavigationController * nav =(UISubNavigationController *) self.window.rootViewController;
if ([[nav.viewControllers lastObject] isKindOfClass:NSClassFromString(@"MessageViewController")])
{
return;
}
//当前的vc ： [nav.viewControllers lastObject]
寻找控制器中的某个vc
for (UIViewController *vc in nav.viewControllers) {
if ([vc isKindOfClass:[OrderNewViewController class]]) {
OrderNewViewController *vcc = (OrderNewViewController*)vc;
switch (alertView.tag) {
case 0:{
vcc.pushMark = @"0";
break;
}
case 1:{
vcc.pushMark = @"1";
break;
}
case 2:{
vcc.pushMark = @"2";
break;
}
}
if (![vc isEqual:[nav.viewControllers lastObject]]) {
[nav popToViewController:vcc animated:YES];
}else{
[vcc refreshVIewH];
}
return;
}
}
我觉得以上这些基本够用了吧
开发类方法也就是把.m的方法像＋方法那样在。h中写一下， 不过这个是－方法.
一下是流传很广的获得当前vc的方法， 虽然我没用到，贴出来希望能帮到大家
1.
//获取当前屏幕显示的viewcontroller
- (UIViewController *)getCurrentVC
{
UIViewController *appRootVC = [UIApplication sharedApplication].keyWindow.rootViewController;
UIViewController *topVC = appRootVC;
if (topVC.presentedViewController) {
topVC = topVC.presentedViewController;
}
return topVC;
}
2
- (UIViewController *)getCurrentVC
{
UIViewController *result = nil;
UIWindow * window = [[UIApplication sharedApplication] keyWindow];
if (window.windowLevel != UIWindowLevelNormal)
{
NSArray *windows = [[UIApplication sharedApplication] windows];
for(UIWindow * tmpWin in windows)
{
if (tmpWin.windowLevel == UIWindowLevelNormal)
{
window = tmpWin;
break;
}
}
}
UIView *frontView = [[window subviews] objectAtIndex:0];
id nextResponder = [frontView nextResponder];
if ([nextResponder isKindOfClass:[UIViewController class]])
result = nextResponder;
else
result = window.rootViewController;
return result;
}
完毕
