IOS screen, Status Bar (statusbar), program window size acquisition and screen rotation size changes

APP size, remove the status bar

Cgrect r = [uiscreen mainscreen]. applicationframe;

This size will not change the width and height as the screen rotates, but after the screen rotates, the width and height will be automatically modified to lose the status bar height.

Portrait screen (4-inch): x = 0, y = 20, width = 320, Height = 548

Horizontal screen (4-inch): x = 0, y = 0, width = 300, Height = 568

Screen Size

Cgrect RX = [uiscreen mainscreen]. bounds;

(4-inch) RX = x = 0, y = 0, width = 320, Height = 568

Fixed size, unchanged from screen Rotation

Status Bar size

Cgrect rect;
Rect = [[uiapplication sharedapplication] statusbarframe];

Always take the vertical as the height.

Portrait screen (4-inch): x = 0, y = 0, width = 320, Height = 20

Horizontal screen (4-inch): x = 300, y = 0, width = 20, Height = 568

How to obtain screen resolution in iPhone

Cgrect rect = [[uiscreen mainscreen] bounds];
Cgsize size = rect. size;
Cgfloat width = size. width;
Cgfloat Height = size. height;

In addition, pay attention to the minimum touch area when designing the UI. There are two arguments:

44*44 seems to be from the SDK

64*64 from Standford Handouts

Cgrect r = [uiscreen mainscreen]. applicationframe;

This size will not change the width and height as the screen rotates, but after the screen rotates, the width and height will be automatically modified to lose the status bar height.

Portrait screen (4-inch): x = 0, y = 20, width = 320, Height = 548

Horizontal screen (4-inch): x = 0, y = 0, width = 300, Height = 568

Screen Size

Cgrect RX = [uiscreen mainscreen]. bounds;

(4-inch) RX = x = 0, y = 0, width = 320, Height = 568

Fixed size, unchanged from screen Rotation

Status Bar size

Cgrect rect;
Rect = [[uiapplication sharedapplication] statusbarframe];

Always take the vertical as the height.

Portrait screen (4-inch): x = 0, y = 0, width = 320, Height = 20

Horizontal screen (4-inch): x = 300, y = 0, width = 20, Height = 568

How to obtain screen resolution in iPhone

Cgrect rect = [[uiscreen mainscreen] bounds];
Cgsize size = rect. size;
Cgfloat width = size. width;
Cgfloat Height = size. height;

In addition, pay attention to the minimum touch area when designing the UI. There are two arguments:

44*44 seems to be from the SDK

64*64 from Standford Handouts