android - 안드로이드 웹뷰(WebView)

파일명 : activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <EditText
            android:id="@+id/editUrl"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:singleLine="true"></EditText>

        <Button
            android:id="@+id/btnG0"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="이동" />

        <Button
            android:id="@+id/btnBack"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="이전" />
    </LinearLayout>
    <WebView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/webView1" />
</LinearLayout>

파일명 : MainActivity.java

package com.example.it.myapplication6_20;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity {
    EditText editUrl;
    Button btnGo, btnBack;
    WebView web;

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

        editUrl = (EditText) findViewById(R.id.editUrl);
        btnGo = (Button) findViewById(R.id.btnG0);
        btnBack = (Button) findViewById(R.id.btnBack);
        web = (WebView) findViewById(R.id.webView1);

        web.setWebViewClient(new CookWebViewClient());

        WebSettings webSet = web.getSettings();
        webSet.setBuiltInZoomControls(true);

        btnGo.setOnClickListener(new View.OnClickListener() {
                                     @Override
                                     public void onClick(View v) {
                                         web.loadUrl(editUrl.getText().toString());
                                     }
                                 }
        );

        btnBack.setOnClickListener(new View.OnClickListener() {
                                       @Override
                                       public void onClick(View v) {
                                           web.goBack();;
                                       }
                                   }

        );
    }

    class CookWebViewClient extends WebViewClient {

        // 자동 오버라이드 :  alt + enter 또는 ctrl + o
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            return super.shouldOverrideUrlLoading(view, url);
        }
    }
}