Solve ios7.0 custom navigation bar left button on the right

1. Custom button

The code is as follows

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Left button UIButton *leftbtn = [[UIButton Alloc]initwithframe:rectwithpara (-20, 0, 44, 44)]; [Leftbtn addtarget:self Action: @selector (btnclicked:) forcontrolevents:uicontroleventtouchupinside];//Set Button click event [Leftbtn setbackgroundimage:imagenamed (@ "ic_fanhui_normal.png") forstate:uicontrolstatenormal];//set button normal state picture [Leftbtn setbackgroundimage:imagenamed (@ "ic_fanhui_pressed.png") forstate:uicontrolstateselected];//Settings button Select Picture

2. Initialization of Uibarbuttonitem

The code is as follows	Copy Code
Uibarbuttonitem *leftbarbuton = [[Uibarbuttonitem alloc]initwithcustomview:leftbtn];

3. Adjust the position and set the left icon of the navigation bar

code is as follows

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//adjustments Leftbarbuttonitem the position under IOS7 if (([[[[[[[Uidevice Currentdevice] systemversion] floatvalue]>=7.0?20:0)) {     uibarbuttonitem *negativespacer = [[Uibarbuttonitem alloc]initwithbarbuttonsystemitem: Uibarbuttonsystemitemfixedspace     Target:nil Action:nil];     negativespacer.width = -20;//This value can be changed freely according to the situation     Self.navigationItem.leftBarButtonItems = @[negativespacer, Leftbarbuton]; }else     self.navigationItem.leftBarButtonItem = Leftbarbuton;