//
//  ContentView.swift
//  Weibo
//
//  Created by Qihua Pan on 2020/8/16.
//  Copyright © 2020 Qihua Pan. All rights reserved.
//

import SwiftUI

import CoreData

struct ContentView: View {
    
    @Environment(\.managedObjectContext) var contenxt:NSManagedObjectContext
       
    @EnvironmentObject var user:User
    
    @State var selection=2

    
    var body: some View {
        TabView(selection: self.$selection) {
            if (self.user.access_token != nil){
                IndexView().tabItem { VStack {
                    Image("house")
                    Text("首页")
                        .foregroundColor(Color.black)
                    } }.tag(1)
            }
            
            LoginView().tabItem { VStack {
                          Image("user")
                      Text("我")
                      } }.tag(2)
           
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView().environment(\.managedObjectContext, UserData.getContext()).environmentObject(UserData.getUser())
    }
}