2024.04.09

今天完善了结对作业后端，安卓正用fragement进行切换

package com.example.sub

import android.annotation.SuppressLint
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.fragment.app.Fragment
import com.example.sub.fragment.DashboardFragment
import com.example.sub.fragment.NotificationsFragment
import com.example.sub.fragment.HomeFragment
import com.google.android.material.bottomnavigation.BottomNavigationView

class MainActivity : AppCompatActivity() {
    private lateinit var bottomNavigationView: BottomNavigationView

    private val navListener = BottomNavigationView.OnNavigationItemSelectedListener { item ->
        var selectedFragment: Fragment? = null
        when (item.itemId) {
            R.id.nav_home -> selectedFragment = HomeFragment()
            R.id.nav_dashboard -> selectedFragment = DashboardFragment()
            R.id.nav_notifications -> selectedFragment = NotificationsFragment()
        }
        supportFragmentManager.beginTransaction().replace(
            R.id.fragment_container,
            selectedFragment!!).commit()
        true
    }

    @SuppressLint("MissingInflatedId")
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        bottomNavigationView = findViewById(R.id.bottom_navigation)
        bottomNavigationView.setOnNavigationItemSelectedListener(navListener)

        // 默认显示 HomeFragment
        supportFragmentManager.beginTransaction().replace(R.id.fragment_container,
            HomeFragment()
        ).commit()
    }
}

 

package com.example.sub.fragment

import android.os.Bundle
import android.util.Log
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Button
import android.widget.EditText
import android.widget.ImageView
import android.widget.TextView
import com.example.sub.R
import com.example.sub.pojo.Result
import com.example.sub.service.GstationService
import com.example.subway.network.ServiceCreator
import retrofit2.Call
import retrofit2.Callback
import retrofit2.Response


class HomeFragment : Fragment() {

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        return inflater.inflate(R.layout.fragment_home, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        val gstationService=ServiceCreator.create<GstationService>()
        val button=view.findViewById<Button>(R.id.left_buttonSearch)
        val star=view.findViewById<EditText>(R.id.left_editTextStart)
        val end=view.findViewById<EditText>(R.id.left_editTextEnd)
        val resultTv=view.findViewById<TextView>(R.id.left_textViewResult)
        val imageView=view.findViewById<ImageView>(R.id.left_image)
        button.setOnClickListener {
            gstationService.getsmall(star.text.toString(),end.text.toString()).enqueue(object :Callback<Result>{
                override fun onResponse(call: Call<Result>, response: Response<Result>) {
                    val result=response.body()
                    resultTv.text=result?.data
                    imageView.visibility = View.VISIBLE // 显示图片
                    Log.e("TAG", "onResponse: ${result?.data}", )
                }

                override fun onFailure(call: Call<Result>, t: Throwable) {
                    Log.e("TAG", "失败,${t.toString()}", )
                }

            })
        }
    }

}