Swift Basics-invoking third-party OC projects

First step: Create and configure Bridging-header.h

Swift and OC are mixed, first there must be a. h file, where you use Bridging-header.h and then set the project's build Settings--swift compiler--objective-c bridging The Header content is demoapp/bridging-header.h, which is related to the Bridging-header.h location, starting at the root of the project in Objective-c bridging The Header option writes the Bridging-header.h relative path.

Step Two: third-party project Dependencies

For third-party project dependencies, I initially planned to use CocoaPods, but the process was tortuous, and at last it was reported

ld:218 duplicate symbols for Architecture I386clang:error:linker command failed with exit code 1 (use-v to see Invocat Ion

I have no choice. To copy the third-party project source code into their own projects, you can also see my copy of the Afnetworking project, and then add the source to build phases--compile sources inside

Step Three: Modify bridging-header.h

write in Bridging-header.h #import "AFNetworking.h"

Fourth step: Call OC

We can invoke the functionality of a third-party project when the previous work is done.

//
//  ViewController.swift
//  DemoApp
//
//  Created by jiezhang on 14/10/24.
//  Copyright (c) 2014年 jiezhang. All rights reserved.
//

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var weatherInfo: UITextView!
    override func viewDidLoad() {
        super.viewDidLoad()
        updateWeatherInfo()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    
    func updateWeatherInfo() {
        let manager = AFHTTPRequestOperationManager()
        let url = "http://api.openweathermap.org/data/2.5/weather"
        println(url)
        let params:NSDictionary = ["lat":"37.785834", "lon":"-122.406417", "cnt":0]
        println(params)
        manager.GET(url,
            parameters: params,
            success: { (operation: AFHTTPRequestOperation!,
                responseObject: AnyObject!) in
                self.weatherInfo.text = "JSON: " + responseObject.description!
            },
            failure: { (operation: AFHTTPRequestOperation!,
                error: NSError!) in
                self.weatherInfo.text = "Error: " + error.localizedDescription
               
        })
    }

	}





	

Fifth step: Run the interface

: Http://pan.baidu.com/s/1c0myIbA

Swift Basics-invoking third-party OC projects