Ios_ Custom Back button

Add Back button in-(void) Viewwillappear: (BOOL) Animated method

Back button

UIButton *leftbutton = [UIButton buttonwithtype:uibuttontypecustom];

Leftbutton.frame=cgrectmake (0, 0, 60, 25);

[LeftButton setimage:[uiimage imagenamed:@ "back_img"] forstate:uicontrolstatenormal];

Set a picture of the back button, consistent with the system's "<"

[LeftButton addtarget:self Action: @selector (Back_click:) forcontrolevents:uicontroleventtouchupinside];

Picture left,

[LeftButton Setcontenthorizontalalignment:uicontrolcontenthorizontalalignmentleft];

Uibarbuttonitem *leftitem = [[Uibarbuttonitem alloc] Initwithcustomview:leftbutton];

ios7.0 system, the custom return button is a bit right, need to adjust the position

if ([[[[[[Uidevice Currentdevice] systemversion] floatvalue]>=7.0?20:0))

{

Uibarbuttonitem *negativespacer = [[Uibarbuttonitem alloc]initwithbarbuttonsystemitem: Uibarbuttonsystemitemfixedspace

Target:nil Action:nil];

Negativespacer.width = -8;//This value can be changed freely according to the situation

Self.navigationItem.leftBarButtonItems = @[negativespacer, Leftitem];

}else

{

Self.navigationItem.leftBarButtonItem = Leftitem;

}

Ios_ Custom Back button