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hmkcodehmkcode
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android connectivity
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‎android-connectivity/app/build.gradle

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apply plugin: 'com.android.application'
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apply plugin: 'kotlin-android'
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apply plugin: 'kotlin-android-extensions'
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android {
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compileSdkVersion 28
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buildToolsVersion "29.0.2"
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defaultConfig {
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applicationId "com.hmkcode.connectivity"
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minSdkVersion 19
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targetSdkVersion 28
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versionCode 1
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versionName "1.0"
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testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
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}
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buildTypes {
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release {
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minifyEnabled false
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proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
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}
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}
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}
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dependencies {
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implementation fileTree(dir: 'libs', include: ['*.jar'])
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implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
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implementation 'androidx.appcompat:appcompat:1.1.0'
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implementation 'androidx.core:core-ktx:1.1.0'
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implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
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// Coroutine
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implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.2"
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implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.2"
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implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.2.0-alpha05"
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testImplementation 'junit:junit:4.12'
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androidTestImplementation 'androidx.test.ext:junit:1.1.1'
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androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
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}

‎android-connectivity/app/src/main/AndroidManifest.xml

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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.hmkcode.connectivity">
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<uses-permission android:name="android.permission.INTERNET" />
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<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
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<application
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android:allowBackup="true"
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android:icon="@mipmap/ic_launcher"
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android:label="@string/app_name"
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android:roundIcon="@mipmap/ic_launcher_round"
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android:supportsRtl="true"
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android:theme="@style/AppTheme">
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<activity android:name=".MainActivity">
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎android-connectivity/app/src/main/java/com/hmkcode/connectivity/MainActivity.kt

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package com.hmkcode.connectivity
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import android.content.Context
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import android.net.ConnectivityManager
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import android.net.Network
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import android.net.NetworkCapabilities
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import android.net.NetworkRequest
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import android.os.Build
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import androidx.appcompat.app.AppCompatActivity
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import android.os.Bundle
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import android.util.Log
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import android.widget.TextView
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import androidx.lifecycle.lifecycleScope
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.launch
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import kotlinx.coroutines.withContext
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class MainActivity : AppCompatActivity() {
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lateinit var tvConnectivity: TextView
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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setContentView(R.layout.activity_main)
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tvConnectivity = findViewById<TextView>(R.id.tvConnectivity)
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// get ConnectivityManager
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val cm:ConnectivityManager =
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getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
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val builder: NetworkRequest.Builder = NetworkRequest.Builder()
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cm.registerNetworkCallback(
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builder.build(),
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object : ConnectivityManager.NetworkCallback() {
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override fun onAvailable(network: Network) {
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lifecycleScope.launch {
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Log.i("MainActivity", "onAvailable!"+network.toString())
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// check if NetworkCapabilities has TRANSPORT_WIFI
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val isWifi:Boolean = cm.getNetworkCapabilities(network).hasTransport(
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NetworkCapabilities.TRANSPORT_WIFI)
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doSomething(true, isWifi)
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}
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}
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override fun onLost(network: Network) {
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lifecycleScope.launch {
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Log.i("MainActivity", "onLost!"+network.toString())
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doSomething(false)
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}
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}
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}
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)
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}
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}
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private suspend fun doSomething(isConnected:Boolean, isWifi:Boolean= false){
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withContext(Dispatchers.Main){
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if(isConnected) {
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tvConnectivity.text = "Connected "+(if(isWifi)"WIFI" else "MOBILE")
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tvConnectivity.setBackgroundColor(-0x8333da)
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}else {
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tvConnectivity.text = "Not Connected"
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tvConnectivity.setBackgroundColor(-0x10000)
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}
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}
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}
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}

‎android-connectivity/app/src/main/res/drawable/ic_launcher_background.xml

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<?xml version="1.0" encoding="utf-8"?>
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<vector xmlns:android="http://schemas.android.com/apk/res/android"
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android:width="108dp"
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android:height="108dp"
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android:viewportWidth="108"
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android:viewportHeight="108">
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<path
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android:fillColor="#008577"
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android:pathData="M0,0h108v108h-108z" />
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<path
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android:fillColor="#00000000"
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android:pathData="M9,0L9,108"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M19,0L19,108"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M29,0L29,108"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M39,0L39,108"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M49,0L49,108"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M59,0L59,108"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M69,0L69,108"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M79,0L79,108"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M89,0L89,108"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M99,0L99,108"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M0,9L108,9"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M0,19L108,19"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M0,29L108,29"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M0,39L108,39"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M0,49L108,49"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M0,59L108,59"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M0,69L108,69"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M0,79L108,79"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M0,89L108,89"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M0,99L108,99"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M19,29L89,29"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M19,39L89,39"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M19,49L89,49"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M19,59L89,59"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M19,69L89,69"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M19,79L89,79"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M29,19L29,89"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M39,19L39,89"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M49,19L49,89"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M59,19L59,89"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M69,19L69,89"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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<path
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android:fillColor="#00000000"
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android:pathData="M79,19L79,89"
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android:strokeWidth="0.8"
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android:strokeColor="#33FFFFFF" />
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</vector>

‎android-connectivity/app/src/main/res/layout/activity_main.xml

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<?xml version="1.0" encoding="utf-8"?>
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<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto"
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xmlns:tools="http://schemas.android.com/tools"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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tools:context=".MainActivity">
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<TextView
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android:id="@+id/tvConnectivity"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="is connected? "
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android:background="#FF0000"
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android:textColor="#FFF"
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android:textSize="18dp"
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android:padding="5dp"
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app:layout_constraintBottom_toBottomOf="parent"
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app:layout_constraintLeft_toLeftOf="parent"
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app:layout_constraintRight_toRightOf="parent"
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app:layout_constraintTop_toTopOf="parent" />
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</androidx.constraintlayout.widget.ConstraintLayout>

‎android-connectivity/app/src/main/res/values/colors.xml

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<?xml version="1.0" encoding="utf-8"?>
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<resources>
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<color name="colorPrimary">#008577</color>
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<color name="colorPrimaryDark">#00574B</color>
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<color name="colorAccent">#D81B60</color>
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</resources>

‎android-connectivity/app/src/main/res/values/strings.xml

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<resources>
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<string name="app_name">connectivity</string>
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</resources>

‎android-connectivity/app/src/main/res/values/styles.xml

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<resources>
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<!-- Base application theme. -->
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<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
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<!-- Customize your theme here. -->
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<item name="colorPrimary">@color/colorPrimary</item>
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<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
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<item name="colorAccent">@color/colorAccent</item>
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</style>
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</resources>

‎android-connectivity/build.gradle

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// Top-level build file where you can add configuration options common to all sub-projects/modules.
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buildscript {
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ext.kotlin_version = '1.3.50'
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repositories {
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google()
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jcenter()
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}
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dependencies {
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classpath 'com.android.tools.build:gradle:3.5.1'
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classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
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// NOTE: Do not place your application dependencies here; they belong
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// in the individual module build.gradle files
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}
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}
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allprojects {
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repositories {
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google()
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jcenter()
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}
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}
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task clean(type: Delete) {
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delete rootProject.buildDir
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}

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