拦截iOS系统导航栏返回按钮事件-三种方法
方法一:在dealloc里面书写监听事件,因为只有pop才会调用dealloc,push不会掉用
– (void)dealloc {YLLog(@”123″); }
方法二:在- (void)viewWillDisappear:(BOOL)animated中调用
– (void)viewWillDisappear:(BOOL)animated{
if ([self.navigationController.viewControllers indexOfObject:self]==NSNotFound) {
NSLog(@”clicked navigationbar back button”);
}
}
方法三:重写返回按钮,然后调用返回按钮的方法即可:如
– (void)popViewcontrollerFunc {
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@”” message:@”确定要放弃到手的*品吗” delegate:self cancelButtonTitle:@”点错啦” otherButtonTitles:@”狠心放弃”, nil];alert.tag = 10001;[alert show];
}