UIButton How to set a rounded rectangle

First on the code

Login button    Loginbtn=[uibutton buttonwithtype:uibuttontyperoundedrect];    Loginbtn.frame=cgrectmake (1, 199, N.);    [Self.view addsubview:loginbtn];    [Loginbtn addtarget:self Action: @selector (login) forcontrolevents:uicontroleventtouchupinside];

The resulting button is a rounded rectangle.

But

If you set a background image for the button, or set a background color, I'm sorry, the button might not be a rounded rectangle.

At this point, we'll make the following settings

    [Loginbtn.layer Setmaskstobounds:yes];    [Loginbtn.layer setcornerradius:5.0];

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UIButton How to set a rounded rectangle