Android-webview example

Android 웹 뷰 예제

Android 웹 뷰 간단 예제

MainActivity.java

package com.webViewProject.webview;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.util.Log;
import android.view.KeyEvent;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

public class MainActivity extends AppCompatActivity {

    private WebView webView;
    private WebSettings webSettings;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        webView = (WebView) findViewById(R.id.webview);//xml 자바코드와 연결
        webView.setWebViewClient(new WebViewClient());

        webSettings = webView.getSettings();
        webSettings.setJavaScriptEnabled(true);//자바스크립트 허용

        webView.setWebChromeClient(new WebChromeClient());//웹뷰에 크롬 사용 허용//이 부분이 없으면 크롬에서 alert가 뜨지 않음
        webView.setWebViewClient(new WebViewClientClass());//새창열기 없이 웹뷰 내에서 다시 열기//페이지 이동 원활히 하기위해 사용

        webView.loadUrl("http://www.naver.com");//웹 뷰에서 연결할 Url

    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {//뒤로가기 버튼 이벤트
        if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack()) {//웹뷰에서 뒤로가기 버튼을 누르면 뒤로가짐
            mWebView.goBack();
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }

    private class WebViewClientClass extends WebViewClient {//페이지 이동
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            Log.d("check URL",url);
            view.loadUrl(url);
            return true;
        }
    }
}

activity_main.xml

<?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">

    <WebView
        android:id="@+id/webview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:layout_editor_absoluteX="1dp"
        tools:layout_editor_absoluteY="1dp" />
</androidx.constraintlayout.widget.ConstraintLayout>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.webViewProject.webview">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

    <uses-permission android:name="android.permission.INTERNET"/>

</manifest>