I'm learning to develop android app using kotlin. I have an app written using web technologies and I want to port it on android. I've created a simple layout where I have some input field that are needed to connect to the IP cam I need to display.

I've found this repo on github and I'm trying to implement it in my app but I don't know how to proceed.

How I can correctly implement the library I need and how I pass the data from the layout to the main file of the app so I can connect when the button is clicked? I want to create something similar to the screen of the repository I'm using to connect to the ip cam.

I've added the gradle plugin in my build.gradle file

plugins {
    id 'com.android.application'
    id 'org.jetbrains.kotlin.android'
}

android {
    compileSdk 31

    defaultConfig {
        applicationId "com.example.onvif_camview"
        minSdk 19
        targetSdk 31
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = '1.8'
    }
}

dependencies {

    implementation 'androidx.core:core-ktx:1.7.0'
    implementation 'androidx.appcompat:appcompat:1.4.1'
    implementation 'com.google.android.material:material:1.4.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
    implementation 'com.squareup.okhttp3:okhttp:3.10.0'
    implementation 'com.rvirin.onvif:onvifcamera:1.1.6'
    testImplementation 'junit:junit:4.13.2'
    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
}

In my MainActivity.kt file I have added the needed code. but I get some error notice Unresolved reference: OnvifDevice

package com.example.onvif_camview

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle

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

        currentDevice = OnvifDevice("IP_ADDRESS:PORT", "login", "pwd")
        currentDevice.listener = this
        currentDevice.getDeviceInformation()
    }
    // Called by the SDK each time a request is performed on the camera, when the result is parsed
    override fun requestPerformed(response: OnvifResponse) {
        Log.d("ONVIF", "Request ${response.request.type} performed.")
        Log.d("ONVIF","Succeeded: ${response.success},
                message: ${response.parsingUIMessage}")

        if (response.request.type == GetDeviceInformation) {
            currentDevice.getProfiles()

        } else if (response.request.type == GetProfiles) {
            currentDevice.getStreamURI()

        } else if (response.request.type == GetStreamURI) {
            Log.d("ONVIF", "Stream URI retrieved: ${currentDevice.rtspURI}")
        }
    }

}

in my layout I have this code

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <EditText
        android:id="@ id/login"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:hint="Username"
        android:inputType="textPersonName"
        android:text="Username"
        tools:layout_editor_absoluteX="91dp"
        tools:layout_editor_absoluteY="189dp" />

    <EditText
        android:id="@ id/IP_ADDRESS:PORT"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:hint="IP_ADDRESS"
        android:inputType="textPersonName"
        android:text="Indirizzo IP"
        tools:layout_editor_absoluteX="91dp"
        tools:layout_editor_absoluteY="129dp" />

    <EditText
        android:id="@ id/pwd"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:hint="Password"
        android:inputType="textPersonName"
        android:text="Password"
        tools:layout_editor_absoluteX="92dp"
        tools:layout_editor_absoluteY="252dp" />

    <Button
        android:id="@ id/button"
        android:layout_width="209dp"
        android:layout_height="43dp"
        android:text="CONNETTI"
        tools:layout_editor_absoluteX="93dp"
        tools:layout_editor_absoluteY="314dp" />

</androidx.constraintlayout.widget.ConstraintLayout>

CodePudding user response：

place cursor somewhere in the middle of OnvifDevice(... and some hint should appear allowing importing dependency. you can press Alt Enter for autoimport then

also you haven't implemented needed interface OnvifListener and didn't declared onvifDevice anywhere...

class MainActivity : AppCompatActivity(), OnvifListener {

    lateinit onvifDevice:OnvifDevice

    override fun onCreate(savedInstanceState: Bundle?) {
        ... rest of code

it should also be imported as above