iOS Development note (SWIFT)-some modifications to the Ppiflatsegmentedcontrol project for Swift calls

The Ppiflatsegmentedcontrol project is a popular open source iOS control library that provides a flat style (Flat style) Segmentedcontrol that can be customized segment colors, icons, sizes, etc. Very flexible and beautiful.

The effect is as follows:

However, as a OC project, when we were programming for OC and Swift, there were some problems due to the use of block in Ppiflatsegmentedcontrol's creation instance method.

Ideas:

First of all, according to the official documentation, Swift uses a closed package instead of block, but I have a limited level and the program does not work properly when used with closures. At the same time, @selector in Swift was verified to work, so I used @selector instead of block.

Implementation scenarios:

1. Modify/Add the instantiation method in Ppiflatsegmentedcontrol source code

　　

here, for Ppiflatsegmentedcontrol Adds a new approach, with the biggest change being the use of @selector.

-(ID) initWithFrame: (CGRect) frame items: (nsarray*) Items iconposition: (iconposition) position target: (  ID) Target andselection: (SEL) Action;

The target and Selaction properties are added to the Ppiflatsegmentedcontrol object as required.

ID target;

　　

The last is to modify the project return Selectindex method segmentselected:, here are two scenarios can be used, respectively, Objc_msgsend () and [ID Performselector: withobject:].

-(void) Segmentselected: (ID) sender{if(sender) {Nsuinteger SelectedIndex=[Self.segments Indexofobject:sender];                [Self setenabled:yes forsegmentatindex:selectedindex]; //calling Block        if(Self.selblock) {self.selblock (selectedindex); }        if(_selaction!=Nil) {            //objc_msgsend (_target,_selaction,[nsnumber numberwithinteger:selectedindex],selectedindex);[_target performselector:_selaction withobject:[nsnumber Numberwithint:selectedindex]; }    }}

Here, we have modified the OC source code is complete, following the swift call to the demo.

var data=[["text":"test1"],["text":"test2"]]; var Segmentcontrol= Ppiflatsegmentedcontrol (Frame:cgrectmake (yunshouyi.screen_width/4,Ten, yunshouyi.screen_width/2, -), Items:data, Iconposition:iconpositionright, Target:self, andselection:"segmentcontrolselected:") Segmentcontrol.color=textservcie.getcolorfromhex ("#36b5fc") Segmentcontrol.borderwidth=0Segmentcontrol.selectedcolor=textservcie.getcolorfromhex ("#0193e6") Segmentcontrol.selectedtextattributes=[nsfontattributename:uifont.systemfontofsize ( -), NSForegroundColorAttributeName:UIColor.whiteColor ()] Segmentcontrol.textattributes=[nsfontattributename:uifont.systemfontofsize ( -), NSForegroundColorAttributeName:TextServcie.getcolorfromHEX ("#0971b0")] Self.navigationItem.titleView=segmentcontrol;

Call the @selector code:

func segmentcontrolselected (index:nsnumber) {        if(index.intvalue==0) {            Switchtofoundation ()        }else{            switchtop2p ()        }    }

Implementation results:

Ppiflatsegmentedcontrol Project Address: Https://github.com/pepibumur/PPiFlatSegmentedControl

iOS Development note (SWIFT)-some modifications to the Ppiflatsegmentedcontrol project for Swift calls