iPhone 4S 屏幕信息
// [[UIApplicationsharedApplication] setStatusBarHidden:YES]; 状态栏占20高度
UIScreen *currentScreen = [UIScreenmainScreen];
NSLog(@"applicationFrame.size.height = %f",currentScreen.applicationFrame.size.height);
NSLog(@"applicationFrame.size.width = %f",currentScreen.applicationFrame.size.width);
NSLog(@"applicationFrame.origin.x = %f",currentScreen.applicationFrame.origin.x);
NSLog(@"applicationFrame.origin.y = %f",currentScreen.applicationFrame.origin.y);
NSLog(@"bounds.x = %f",currentScreen.bounds.origin.x);
NSLog(@"bounds.y = %f",currentScreen.bounds.origin.y);
NSLog(@"bounds.height = %f",currentScreen.bounds.size.height);
NSLog(@"bounds.width = %f",currentScreen.bounds.size.width);
NSLog(@"brightness = %f",currentScreen.brightness);
applicationFrame.size.height = 460
applicationFrame.size.width = 320
applicationFrame.origin.x = 0
applicationFrame.origin.y = 20
bounds.x = 0
bounds.y = 0
bounds.height = 480
bounds.width = 320
brightness = 0.392892
iPad4
applicationFrame.size.height = 1004
applicationFrame.size.width = 768
applicationFrame.origin.x = 0
applicationFrame.origin.y = 20
bounds.x = 0
bounds.y = 0
bounds.height = 1024
bounds.width = 768
brightness = 0.787293