Q:

naviagtionBar height and statusBar height size

In the use of the iphone 5, the navigationBar and statusBar normal height, but under the iphone6 or iphone6plus navigationBar and the statusBar height is bigger, not 64, the likelihood is scaling.
The problem is that I want iphone6 or iphone6plus to also become a normal 64, but they don't know how to find this code in the project.

A:

It looks like bigger, but they still 64, Apple would do math to convert visual effect by itself. You can try to log it 
Target->iPhone 6
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    NSLog(@"navigation bar height:%f, status bar height:%f", self.navigationController.navigationBar.frame.size.height, [UIApplication sharedApplication].statusBarFrame.size.height);
}

The log
2015-07-25 13:14:40.252 Test001[62901:7144906] navigation bar height:44.000000, status bar height:20.000000

