//app尺寸，去掉狀態欄

    CGRect appRect = [UIScreenmainScreen].applicationFrame;

    NSLog(@"%f, %f, %f,%f",appRect.origin.x, appRect.origin.y, appRect.size.width,appRect.size.height);

//屏幕尺寸

    CGRect screenRect = [UIScreen mainScreen].bounds;

    NSLog(@"%f, %f, %f,%f",screenRect.origin.x, screenRect.origin.y, screenRect.size.width,screenRect.size.height);

//狀態欄尺寸

    CGRect statusRect = [[UIApplication sharedApplication] statusBarFrame];

    NSLog(@"%f, %f, %f,%f",statusRect.origin.x, statusRect.origin.y, statusRect.size.width,statusRect.size.height);