iOS navigation bar (Customize and use System mode)

System mode:

    1. Set the navigation bar background image [Self.navigationController.navigationBar Setbackgroundimage:[[uiimage alloc] init] Forbarmetrics:uiba    Rmetricsdefault];        Self.navigationController.navigationBar.shadowImage = [[UIImage alloc]init];    [Self Navigationcontroller] setnavigationbarhidden:no Animated:yes]; Self.navigationController.navigationBar.backgroundColor = [[Uicolor alloc] initwithred:248/255.0 green:248/255.0        blue:248/255.0 alpha:1.0];    2. The Cancel button on the left side of the navigation panel uibutton* CancelButton = [UIButton buttonwithtype:uibuttontyperoundedrect];        if (CancelButton! = nil) {[CancelButton Settitle:post_cancel_button forstate:uicontrolstatenormal];        [CancelButton setframe:cgrectmake (0, 0, width_screen/5.0, 44)]; [CancelButton Settitlecolor:[[uicolor alloc] initwithred:0 green:158/255.0 blue:150/255.0 alpha:1.0]forState:        UIControlStateNormal];        CancelButton.titleLabel.font = [Uifont systemfontofsize:16.0]; Cancelbutton.contenthorizontalalignment = UICOntrolcontenthorizontalalignmentleft; [CancelButton addtarget:self Action: @selector (Cancelbuttoneventtouchupinside) Forcontrolevents:uicontroleven                Ttouchupinside];        Uibarbuttonitem *leftitem = [[Uibarbuttonitem alloc] Initwithcustomview:cancelbutton];        if (leftitem! = nil) {Self.navigationItem.leftBarButtonItem = Leftitem;    }}//3. The Publish button to the right of the navigation panel uibutton* Postbutton = [UIButton buttonwithtype:uibuttontyperoundedrect];        if (Postbutton! = nil) {[Postbutton setframe:cgrectmake (0, 0, width_screen/5.0, 44)];        [Postbutton settitle:@ "release" Forstate:uicontrolstatenormal]; [Postbutton Settitlecolor:[[uicolor alloc] initwithred:0 green:158/255.0 blue:150/255.0 alpha:1.0]forState:        UIControlStateNormal];        PostButton.titleLabel.font = [Uifont systemfontofsize:16.0];        Postbutton.contenthorizontalalignment = Uicontrolcontenthorizontalalignmentright; [Postbutton Addtarget:seLF Action: @selector (Postbuttoneventtouchupinside) forcontrolevents:uicontroleventtouchupinside];        Uibarbuttonitem *rightitem = [[Uibarbuttonitem alloc] Initwithcustomview:postbutton];        if (rightitem! = nil) {Self.navigationItem.rightBarButtonItem = Rightitem;    }}//4. The middle text of the navigation panel uilabel* navigationlabel = [[UILabel alloc] Initwithframe:cgrectmake (0, 0, 0, 44)];        if (Navigationlabel! = nil) {[Navigationlabel settextcolor:[uicolor blackcolor]];        Navigationlabel.text = Post_navigation_title;        [Navigationlabel Settextalignment:nstextalignmentcenter];        Navigationlabel.font = [Uifont systemfontofsize:18.0];    Self.navigationItem.titleView = Navigationlabel;    }//5. Navigate to one of the split lines below uiview* line = [[UIView alloc]initwithframe:cgrectmake (0, + 44,width_screen, 1)]; if (line! = nil) {line.backgroundcolor = [[Uicolor alloc] initwithred:221/255.0 green:221/255.0 blue:221/255.0 Alpha: 1.0];    [Self.view Addsubview:line]; }

Custom:

    1. Create a navigation bar view UIView *navview = [[UIView alloc]initwithframe:cgrectmake (0, 0, Width_screen, 65)]; if (Navview! = nil)//When the Navigation view is not loaded successfully, the method {//1 is introduced. Set the background for the navigation view Navview.backgroundcolor = [Uicolor colorwithred:        248/255.0 green:248/255.0 blue:248/255.0 alpha:1];                [Self Navigationcontroller] setnavigationbarhidden:yes Animated:yes];        2. The Cancel button on the left side of the navigation panel uibutton* LeftButton = [UIButton buttonwithtype:uibuttontyperoundedrect];            if (LeftButton! = nil) {leftbutton.frame = CGRectMake (15, 20, 65, 44);            [LeftButton Settitle:post_cancel_button Forstate:uicontrolstatenormal]; [LeftButton Settitlecolor:[[uicolor alloc] initwithred:0 green:158/255.0 blue:150/255.0 alpha:1.0]forState:            UIControlStateNormal];            LeftButton.titleLabel.font = [Uifont systemfontofsize:16.0];            Leftbutton.contenthorizontalalignment = Uicontrolcontenthorizontalalignmentleft; [LeftButton AddTArget:self Action: @selector (Cancelbuttoneventtouchupinside) forcontrolevents:uicontroleventtouchupinside];        [Navview Addsubview:leftbutton];        //3. The Publish button to the right of the navigation panel uibutton* Rightbutton = [UIButton buttonwithtype:uibuttontyperoundedrect];            if (Rightbutton! = nil) {[Rightbutton setframe:cgrectmake (width_screen-80, 20, 65, 44)];            [Rightbutton settitle:@ "release" Forstate:uicontrolstatenormal]; [Rightbutton Settitlecolor:[[uicolor alloc] initwithred:0 green:158/255.0 blue:150/255.0 alpha:1.0]forState:            UIControlStateNormal];            RightButton.titleLabel.font = [Uifont systemfontofsize:16.0];            Rightbutton.contenthorizontalalignment = Uicontrolcontenthorizontalalignmentright; [Rightbutton addtarget:self Action: @selector (Postbuttoneventtouchupinside) Forcontrolevents:uicontroleven            Ttouchupinside];        [Navview Addsubview:rightbutton];       }         4. Navigation panel middle text uilabel* navtitle = [[UILabel alloc] Initwithframe:cgrectmake (+, width_screen-80-80,        44)];            if (navtitle! = nil) {[Navtitle settextcolor:[uicolor blackcolor]];            Navtitle.text = Post_navigation_title;            [Navtitle Settextalignment:nstextalignmentcenter];            Navtitle.font = [Uifont systemfontofsize:18.0];        [Navview Addsubview:navtitle];        }//5. Add a split line at the bottom of the Navigation view UIView *navdividingline = [[UIView alloc] init];            if (navdividingline! = nil) {navdividingline.frame = CGRectMake (0, + width_screen, 1);            Navdividingline.backgroundcolor = [Uicolor colorwithred:221/255.0 green:221/255.0 blue:221/255.0 alpha:1];        [Navview Addsubview:navdividingline];    }//6. Add navigation bar to view [Self.view Addsubview:navview]; }

iOS navigation bar (Customize and use System mode)