app_connect/main.kt

package com.example.appimage

import android.graphics.Bitmap
import android.graphics.BitmapFactory
import android.graphics.Color
import android.os.AsyncTask
import android.os.Bundle
import android.util.Base64
import android.util.JsonReader
import android.util.Log
import android.view.View
import android.widget.Button
import android.widget.EditText
import android.widget.ImageView
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import org.json.JSONObject
import org.json.JSONStringer
import org.xml.sax.Parser
import java.io.BufferedReader
import java.io.InputStream
import java.io.InputStreamReader
import java.lang.Exception
import java.lang.StringBuilder
import java.net.HttpURLConnection
import java.net.URL
import java.net.URLEncoder


class MainActivity : AppCompatActivity() {

    var urlRes : String = ""
    var urlConfirm : String = ""
    var btnShowImage1: Button? = null
    var btnShowImage2: Button? = null
    var im1: ImageView? = null
    var im2: ImageView? = null



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

        btnShowImage1 = findViewById<Button>(R.id.btnShowImage1)
        btnShowImage2 = findViewById<Button>(R.id.btnShowImage2)
        im1 = findViewById(R.id.im1)
        im2 = findViewById(R.id.im2)

        btnShowImage1!!.isEnabled = false
        btnShowImage2!!.isEnabled = false

        btnShowImage1!!.setOnClickListener {
            var url = urlRes + "1&timeout=6"
//            Log.d("URL : ", url)
            sendAPIDetail(url)
        }

        btnShowImage2!!.setOnClickListener {
            Log.d("urlConfirm : ", urlConfirm)
            sendAPIDetail(urlConfirm)
        }
    }

    fun sendAPIDetail(url: String) {
        var readContentURL: ReadContentURL = ReadContentURL()
        readContentURL.execute(url)
    }

    fun onConnect(view: View) {
        var textID = findViewById<EditText>(R.id.edEnterID);
        var id = textID.text.toString()
        var url = "http://192.168.3.94:5000/get-ip-box?id=" + id
        this.sendAPIDetail(url)
    }


    inner class ReadContentURL : AsyncTask<String, Void, String> () {

        var content: String = String()
        var url : URL? = null
        var urlConnection: HttpURLConnection? = null
        var inputStream : InputStream? = null
        var inputStreamReader : InputStreamReader? = null
        var bufferedReader: BufferedReader? = null
        var line: String = ""


        override fun onPreExecute() {
            super.onPreExecute()
        }

        override fun doInBackground(vararg params: String?): String {
            try {

                url = URL(params[0])
                urlConnection = url!!.openConnection() as HttpURLConnection
                inputStream = urlConnection!!.inputStream
                inputStreamReader = InputStreamReader(inputStream)
                bufferedReader = BufferedReader(inputStreamReader)
                try {
                    do {
                        line = bufferedReader!!.readLine()
                        if (line != null) {
                            content += line

                        }
                    } while (line != null)
                } catch (e:Exception) {
                    Log.d("AAA", e.toString())
                }
                return content
            } catch (e: Exception) {
                Log.d("ERROR:", e.toString())
            }finally {
                bufferedReader!!.close()
                inputStreamReader!!.close()
                inputStream!!.close()
                urlConnection!!.disconnect()
            }
            return "{\"error\":\"1001\"}"
        }

        override fun onPostExecute(result: String?) {
            super.onPostExecute(result)
            btnShowImage2!!.isEnabled = false
            try {
                var obj = JSONObject(result.toString())
                if (obj.has("url")) {
                    urlRes = obj["url"].toString()
                    btnShowImage1!!.isEnabled = true
                }
                else if (obj.has("data")) {
                    var jArray = obj.getJSONArray("data")
                    var code = obj["code"]
//                    Log.d("Code : ", code.toString())
                    for (i in 0 until jArray.length())
                    {
                        val row = jArray.getJSONObject(i)
                        var base64 = row.getString("base64")
                        var type = row.getString("type")
                        if(type == "CD" && (code.toString() == "1" || code.toString() != "2")) {
                            im1!!.setImageBitmap(decodeBase64(base64))
                        }
                        if (type == "MT" && (code.toString() == "1" || code.toString() != "3")) {
                            im2!!.setImageBitmap(decodeBase64(base64))
                        }
                    }

                    if (code.toString() == "2") {
                        btnShowImage2!!.isEnabled = true
                        urlConfirm = urlRes + "2&timeout=6"
                        im1!!.setImageResource(android.R.color.transparent)
                        Toast.makeText(this@MainActivity, "Lỗi khi chụp chân dung", Toast.LENGTH_SHORT).show()
                    } else if (code.toString() == "3") {
                        btnShowImage2!!.isEnabled = true
                        urlConfirm = urlRes + "3&timeout=6"
                        im2!!.setImageResource(android.R.color.transparent)
                        Toast.makeText(this@MainActivity, "Lỗi khi chụp chứng minh thư", Toast.LENGTH_SHORT).show()
                    }
                }
            } catch (e : Exception) {
                Toast.makeText(this@MainActivity, "Lỗi...", Toast.LENGTH_LONG).show()
//                btnShowImage2!!.isEnabled = false
                im1!!.setImageResource(android.R.color.transparent)
                im2!!.setImageResource(android.R.color.transparent)
            }
        }

        fun decodeBase64(input: String): Bitmap {
            val decodedBytes = Base64.decode(input, 0)
            return BitmapFactory.decodeByteArray(decodedBytes, 0, decodedBytes.size)
        }
    }
}