flutter_filereader/ios/Classes/FileReaderView.swift at 77b17bb4e7a551b89723e3c3e394f012bbdaf1bd · fluttercandies/flutter_filereader · GitHub

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//
//  FileReaderView.swift
//  flutter_filereader
//
//  Created by 胡杰 on 2019/3/6.
//

import UIKit
import WebKit

class FileReaderView: NSObject,FlutterPlatformView {

    var _webView: FileReaderWKWebView?


    init(withFrame frame: CGRect, viewIdentifier viewId: Int64, arguments args: Any?,binaryMessenger messenger: FlutterBinaryMessenger) {

        super.init()

        let channel = FlutterMethodChannel.init(name: "wv.io/FileReader_\(viewId)", binaryMessenger: messenger)

        channel.setMethodCallHandler { (call, result) in
            if call.method == "openFile" {
                if isSupportOpen(fileType: fileType(filePath: call.arguments as? String)){

                    self.openFile(filePath: call.arguments as! String)

                    result(true)
                }else{
                    result(false)
                }
                return
            }
            if call.method == "canOpen" {
                result(isSupportOpen(fileType: fileType(filePath: call.arguments as? String)))
                return
            }

        }

        self._webView = FileReaderWKWebView.init(frame: frame)
        // 隐藏垂直线条
        _webView?.scrollView.showsVerticalScrollIndicator = false
    }


    func openFile(filePath:String)  {

        let url = URL.init(fileURLWithPath: filePath)

        if #available(iOS 9.0, *) {
            _webView?.loadFileURL(url, allowingReadAccessTo: url)
        } else {
            let request = URLRequest.init(url: url)
            _webView?.load(request)
        }

    }


    func view() -> UIView {
        return _webView!
    }


}