코틀린에서 WebView 기능을 구글링해서 코드를 여러가지 추가하면서 테스트하고 적어둔다.
책에 나온 코드는 매우 간단하다.
사실 코드가 간단해도 동작하는데 전혀 문제는 없다.
Project build.gradle
buildscript {
ext.kotlin_version = '1.3.72'
ext.anko_version='0.10.8'
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.6.3'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}
}
|
앱 build.gradle
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
android {
compileSdkVersion 29
buildToolsVersion "29.0.3"
defaultConfig {
applicationId "com.link2me.android.webview"
minSdkVersion 21
targetSdkVersion 29
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility = 1.8
targetCompatibility = 1.8
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.core:core-ktx:1.2.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation "org.jetbrains.anko:anko:$anko_version"
implementation 'com.google.android.material:material:1.1.0'
implementation 'androidx.cardview:cardview:1.0.0' // 레이아웃으로 사용할 CardView
implementation 'androidx.recyclerview:recyclerview:1.1.0'
}
|
import android.app.Activity
import android.os.Build
import android.os.Bundle
import android.view.KeyEvent
import android.view.inputmethod.EditorInfo
import android.webkit.*
import android.widget.Toast
import androidx.annotation.RequiresApi
import androidx.appcompat.app.AppCompatActivity
import kotlinx.android.synthetic.main.activity_main.*
class MainActivity : AppCompatActivity() {
private lateinit var mWebView: WebView
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
mWebView = findViewById(R.id.webView)
val url: String = "http://link2me.tistory.com/"
MyWebView(url)
urlEditText.setOnEditorActionListener{_, actionId, _->
if(actionId == EditorInfo.IME_ACTION_SEARCH){
var url: String = urlEditText.text.toString()
if(!(url.contains("http://") || url.contains("https://"))){
url = "http://${url}"
}
MyWebView(url)
true
} else {
false
}
}
}
fun MyWebView(url: String){
mWebView.apply {
settings.javaScriptEnabled = true
// Enable and setup web view cache
settings.setAppCacheEnabled(true)
settings.cacheMode = WebSettings.LOAD_DEFAULT
settings.setAppCachePath(cacheDir.path)
// Enable zooming in web view
settings.setSupportZoom(true)
settings.builtInZoomControls = true
settings.displayZoomControls = true
// Enable disable images in web view
settings.blockNetworkImage = false
// Whether the WebView should load image resources
settings.loadsImagesAutomatically = true
settings.domStorageEnabled = true
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
settings.safeBrowsingEnabled = true // api 26
}
//settings.pluginState = WebSettings.PluginState.ON
settings.useWideViewPort = true
settings.loadWithOverviewMode = true
settings.javaScriptCanOpenWindowsAutomatically = true
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
settings.mediaPlaybackRequiresUserGesture = false
}
// More optional settings, you can enable it by yourself
settings.domStorageEnabled = true
settings.setSupportMultipleWindows(true)
settings.loadWithOverviewMode = true
settings.allowContentAccess = true
settings.setGeolocationEnabled(true)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
settings.allowUniversalAccessFromFileURLs = true
}
settings.allowFileAccess = true
// WebView settings
mWebView.fitsSystemWindows = true
mWebView.webViewClient = MyWebViewClient(this@MainActivity)
}
mWebView.loadUrl(url)
}
class MyWebViewClient internal constructor(private val activity: Activity) : WebViewClient() {
@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
override fun shouldOverrideUrlLoading(view: WebView?, request: WebResourceRequest?): Boolean {
val url: String = request?.url.toString();
view?.loadUrl(url)
return true
}
override fun shouldOverrideUrlLoading(webView: WebView, url: String): Boolean {
webView.loadUrl(url)
return true
}
override fun onReceivedError(view: WebView, request: WebResourceRequest, error: WebResourceError) {
Toast.makeText(activity, "Got Error! $error", Toast.LENGTH_SHORT).show()
}
}
override fun onKeyDown(keyCode: Int, event: KeyEvent): Boolean {
if (keyCode == KeyEvent.KEYCODE_BACK && mWebView.canGoBack()) {
mWebView.goBack()
return true
}
return super.onKeyDown(keyCode, event)
}
override fun onBackPressed() {
if(mWebView.canGoBack()){
mWebView.goBack() // 이전 페이지로 갈 수 있다면 이동하고
} else {
super.onBackPressed() // 더 이상 이전 페이지가 없을 때 앱이 종료된다.
}
}
}
|
XML Layout 만드는 방법은 별도 적지 않고 테스트한 소스코드를 첨부한다.
WebView.zip
