WebView 내에서 외부 웹 페이지를로드하는 방법

내 문제는 웹 페이지가 webview 내부에로드되지 않는다는 것입니다.

mWebview.loadUrl("http://www.google.com"); 웹 브라우저를 시작합니다 ...

이것은 내 활동의 코드입니다.

import android.app.Activity;
import android.os.Bundle;
import android.webkit.WebView;

public class Main extends Activity {

    private WebView mWebview;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        mWebview = new WebView(this);
        mWebview.loadUrl("http://www.google.com");
        setContentView(mWebview);
    }   
}

매니페스트에 필요한 권한을 추가했습니다.

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

이 게시물 덕분에 마침내 해결책을 찾았습니다. 다음은 코드입니다.

import android.app.Activity;
import android.os.Bundle;
import android.webkit.WebResourceError;
import android.webkit.WebResourceRequest;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
import android.annotation.TargetApi;

public class Main extends Activity {

    private WebView mWebview ;

    @Override
    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        mWebview  = new WebView(this);

        mWebview.getSettings().setJavaScriptEnabled(true); // enable javascript

        final Activity activity = this;

        mWebview.setWebViewClient(new WebViewClient() {
            @SuppressWarnings("deprecation")
            @Override
            public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
                Toast.makeText(activity, description, Toast.LENGTH_SHORT).show();
            }
            @TargetApi(android.os.Build.VERSION_CODES.M)
            @Override
            public void onReceivedError(WebView view, WebResourceRequest req, WebResourceError rerr) {
                // Redirect to deprecated method, so you can use it in all SDK versions
                onReceivedError(view, rerr.getErrorCode(), rerr.getDescription().toString(), req.getUrl().toString());
            }
        });

        mWebview .loadUrl("http://www.google.com");
        setContentView(mWebview );

    }

}

이 시도

webviewlayout.xml :

<?xml version="1.0" encoding="utf-8"?>
<WebView xmlns:android="http://schemas.android.com/apk/res/android"
         android:id="@+id/help_webview"
         android:layout_width="fill_parent"
         android:layout_height="fill_parent"
         android:scrollbars="none"
/>

활동에서 :

WebView webView;
setContentView(R.layout.webviewlayout);
webView = (WebView)findViewById(R.id.help_webview);
webView.getSettings().setJavaScriptEnabled(true);
webview.loadUrl("http://www.google.com");

최신 정보

webView.setWebViewClient(new WebViewController());활동에 추가 하십시오.

WebViewController 클래스 :

public class WebViewController extends WebViewClient {

    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        view.loadUrl(url);
        return true;
    }
}

public class WebViewController extends WebViewClient {
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        view.loadUrl(url);
        return true;
    }
}
webView.setWebViewClient(new WebViewController());

이 코드를 사용하십시오 :-

Main.Xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="fill_parent"
    android:layout_height="fill_parent" android:background="@drawable/background">
    <RelativeLayout android:layout_width="fill_parent"
        android:layout_height="wrap_content" android:background="@drawable/top_heading"
        android:id="@+id/rlayout1">
        <TextView android:layout_width="wrap_content"
            android:layout_centerVertical="true" android:layout_centerHorizontal="true"
            android:textColor="#ffffff" android:textSize="22dip"
            android:textStyle="bold" android:layout_height="wrap_content"
            android:text="More Information" android:id="@+id/txtviewfbdisplaytitle" />
    </RelativeLayout>
    <RelativeLayout android:layout_width="fill_parent"
        android:layout_height="fill_parent" android:layout_below="@+id/rlayout1"
        android:id="@+id/rlayout2">
        <WebView android:id="@+id/webview1" android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_weight="1.0" />
    </RelativeLayout>
</RelativeLayout>

MainActivity.Java

public class MainActivity extends Activity {
    private class MyWebViewClient extends WebViewClient {
          @Override
          public boolean shouldOverrideUrlLoading(WebView view, String url) {
              view.loadUrl(url);
              return true;
          }
    }
    Button btnBack;
    WebView webview;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        webview=(WebView)findViewById(R.id.webview1);
        webview.setWebViewClient(new MyWebViewClient());
        openURL();
    }

     /** Opens the URL in a browser */
    private void openURL() {
        webview.loadUrl("http://www.google.com");
        webview.requestFocus();
    }
}

질문이 있으면이 코드를 사용해보십시오.

이 코드 줄을 먼저 통합하여 Android Manifest 파일에 권한을 부여하는 것은 매우 간단 합니다.

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

그런 다음 Activity.xml에 코드를 작성하십시오.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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="com.example.MainActivity">

<WebView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/help_webview"
    android:layout_width="match_parent"
    android:layout_height="match_parent"

/>

</LinearLayout>

그런 다음 MainActivity.java에 이러한 코드를 작성하십시오 .

import android.app.Activity;
import android.content.Intent;
import android.content.res.Resources;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.Window;
import android.webkit.WebResourceRequest;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;

public class MainActivity extends Activity{
    private WebView mWebview ;
    String link = "";// global variable
    Resources res;// global variable
    @Override


      protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            requestWindowFeature(Window.FEATURE_NO_TITLE);
            setContentView(R.layout.activity_modernherbal_main);
            mWebview  = (WebView) findViewById(R.id.help_webview);
            WebSettings webSettings = mWebview.getSettings();
            webSettings.setJavaScriptEnabled(true);
            webSettings.setUseWideViewPort(true);
            webSettings.setLoadWithOverviewMode(true);



        final Activity activity = this;

        mWebview.setWebViewClient(new WebViewClient() {
            public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
                Toast.makeText(activity, description, Toast.LENGTH_SHORT).show();
            }


});

    mWebview .loadUrl("http://www.example.com");

}

}

문제를 해결하는 데 도움이 될 것입니다.

XML 파일로 이동하여 webView에 ID를 부여한 다음 Java에서 다음 줄을 붙여 넣습니다.

   public class Main extends Activity {

private WebView mWebview;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.Your_layout_file_name);

    mWebview = (WebView)findViewById(R.id.id_you_gave _to_your_wenview_in_xml);
    mWebview.loadUrl("http://www.google.com");
    }   
}

이렇게 할 수 있습니다.

webView = (WebView) findViewById(R.id.webView1);
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl("Your URL goes here");

이 시도;

webView.loadData("<iframe src='http://www.google.com' style='border: 0; width: 100%; height: 100%'></iframe>", "text/html; charset=utf-8", "UTF-8");

AndroidManifest.xml에 인터넷 권한 추가

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

레이아웃에서 :

<?xml version="1.0" encoding="utf-8"?>
<WebView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/webView"
 />

당신의 활동에서

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

    try {
        progressDialog = new ProgressDialog(this);
        url_Api = "https://docs.microsoft.com/en-us/learn";

        webView = this.findViewById(R.id.webView);

            progressDialog.setMessage(getString(R.string.connection_Wait));
            progressDialog.setIndeterminate(false);
            progressDialog.setCancelable(true);
            progressDialog.show();

            LoadUrlWebView( url_Api );
    }catch (Exception e){
        Log.w(TAG, "onCreate", e);
    }
}

private void LoadUrlWebView( String url_api ) {
    try {
        webView.setWebViewClient(new WebViewClient());
        webView.setWebChromeClient(new MyWebChromeClient( url_api ));
        webView.getSettings().setJavaScriptEnabled(true);
        webView.getSettings().setSupportZoom(true);
        webView.getSettings().setAllowContentAccess(true);
        webView.getSettings().setBuiltInZoomControls(true);
        webView.getSettings().setDisplayZoomControls(false);

        webView.loadUrl(url_api);
    } catch (Exception e) {
        Log.w(TAG, "setUpNavigationView", e);
    }
}

private class MyWebChromeClient extends WebChromeClient {
    private String urlAccount;

    public MyWebChromeClient( String urlAccount ) {
        this.urlAccount = urlAccount;
    }

    @Override
    public void onProgressChanged(WebView view, int newProgress) {
        try {
            //Tools.LogCat(context, "INSIDE MyWebChromeClient | onProgressChanged / newProgress1:" + newProgress);
            progressDialog.setMessage(newProgress + "% " + getString(R.string.connection_Wait));
            if (newProgress < 100 && !progressDialog.isShowing()) {
                if (progressDialog != null)
                    progressDialog.show();
            }
            if (newProgress == 100) {
                if (progressDialog != null)
                    progressDialog.dismiss();
            }
        }catch (Exception e){
            Log.w( "onProgressChanged", e);
        }
    }

    @Override
    public void onReceivedTitle(WebView view, String title) {
        super.onReceivedTitle(view, title);

        sharedPreferences = new Shared_Preferences( context );
        sharedPreferences.setPageWebView(view.getUrl());
    }

}

이 멋진 코드를 사용했습니다. 하지만 오류가 있습니다. "neterr_cleartext_not_permitted" 이 코드를 사용하면이 문제에 직면하게됩니다.

나는 이것의 해결책을 얻었습니다. 당신은 이것을 당신의 AndroidManifest.xml 에 Application 근처에 추가해야

android:usesCleartextTraffic="true"
<uses-permission android:name="android.permission.INTERNET" /> // ignore if you already added. outside of Application.

WebView 클라이언트 추가

mWebView.setWebViewClient(new WebViewClient());

WebView 클라이언트를 추가해야합니다.

mWebView.setWebViewClient(new WebViewClient() {

   public void onPageFinished(WebView view, String url) {
        // do your stuff here
    }
});

또한 onPageFinished를 사용하여 webview가 웹 페이지를로드 한 후 작업을 수행 할 수 있습니다.

활동 클래스에 아래 메소드를 추가하십시오. 여기 브라우저는 웹뷰 객체 일뿐입니다.

이제 웹 포함 페이지를 쉽게 볼 수 있습니다.

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