파드레의 요모조모

메인 자바는 인터넷 강좌 자료가 여기 저기 있으니 찾아보면 비슷하지요..

=====================mainactivity.java================

public class MainActivity2 extends AppCompatActivity {
    private WebView wv;
    private String url = "https://www.naver.com/";


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);

        wv = (WebView)findViewById(R.id.wv);
        wv.getSettings().setJavaScriptEnabled(true);
        wv.loadUrl(url);
        wv.setWebChromeClient(new WebChromeClient());
        wv.setWebViewClient(new WebViewClientClass());
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if((keyCode == KeyEvent.KEYCODE_BACK)&&(wv.canGoBack())){
            wv.goBack();
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }


    private class WebViewClientClass extends WebViewClient {
         @Override
        public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
            return super.shouldOverrideUrlLoading(view, request);
        }
    }
}

=====================================================

중요한 부분은 permition 설정이 강화되어서 그냥 인터넷 설정만 갖고는 안된다는 것입니다.

아래 manifest.xml에 빨간 부분을 첨가하고

=============================================================

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

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

    <application
    android:networkSecurityConfig="@xml/network_security_config"
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/Theme.CusNavi">
        <activity android:name=".MainActivity2"></activity>
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

</manifest>

===============================================================

새로운 xml 파일을 만들어 android:networkSecurityConfig="@xml/network_security_config부분 설정을 해주어야 합니다.

============res/xml/network_security_config==============================

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
        <base-config cleartextTrafficPermitted="True"/>
</network-security-config>

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참고 사이트 : www.youtube.com/watch?v=6U8-_G5yjwA

영어가 인도 발음이신 것 같은데 Sandip Bhattacharya 유투버님께 감사드립니다.