Authen Demo

activity_login.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent"
>
    <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Hello World, MyActivity"
    />
    <WebView
            android:layout_width="match_parent"
            android:layout_height="300dp"
            android:minHeight="300dp"
            android:id="@+id/webView" android:layout_gravity="center_horizontal"/>
</LinearLayout>

activity_main.xml

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

    <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="login"
            android:text="Login"
            android:id="@+id/button"/>
</LinearLayout>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.example.webViewTest"
          android:versionCode="1"
          android:versionName="1.0">
    <uses-sdk android:minSdkVersion="15"/>
    <uses-permission android:name="android.permission.INTERNET"/>
    <application android:label="@string/app_name" android:icon="@drawable/ic_launcher">
        <activity android:name=".LoginActivity"
                  android:theme="@android:style/Theme.Holo.Light.Dialog"
                  android:label="@string/app_name">
        </activity>
        <activity android:name=".MainActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
    </application>
</manifest>

LoginActivity.java

package com.example.webViewTest;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.net.http.SslError;
import android.os.Bundle;
import android.webkit.*;

public class LoginActivity extends Activity {

    private static final String TAG = "LoginActivity";

    public static void clearCookies(Context context) {
        CookieSyncManager cookieSyncMngr = CookieSyncManager.createInstance(context);
        cookieSyncMngr.startSync();
        CookieManager cookieManager = CookieManager.getInstance();
        cookieManager.removeAllCookie();
        cookieManager.removeSessionCookie();
        cookieSyncMngr.stopSync();
        cookieSyncMngr.sync();

    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        WebView webView = (WebView) findViewById(R.id.webView);
        webView.setWebViewClient(new TBRWebViewClient());
        webView.clearHistory();
        webView.clearFormData();
        webView.clearCache(true);
        webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
        clearCookies(this);
        webView.loadUrl("https://uranium.lsr.nectec.or.th/oxauth/seam/resource/restv1/oxauth/authorize?response_type=code&client_id=%40%217EEB.9ECF.548F.CB82%210001%218E4C.FCB1%210008%21F40F.C6D4&scope=profile+address&redirect_uri=http%3A%2F%2Flocalhost&display=page&prompt=consent");
    }

    public class TBRWebViewClient extends WebViewClient {

        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            if (url.startsWith("http://localhost/?")) {
                Intent intent = new Intent();
                intent.setData(Uri.parse(url));
                setResult(RESULT_OK, intent);
                finish();
            }
            return super.shouldOverrideUrlLoading(view, url);
        }

        @Override
        public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
            handler.proceed();
        }
    }
}

MainActivity.java

package com.example.webViewTest;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends Activity {

    public static final int REQUEST_CODE = 12;

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

    public void login(View view){
        Intent intent = new Intent(this, LoginActivity.class);
        startActivityForResult(intent, REQUEST_CODE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == REQUEST_CODE){
            Toast.makeText(MainActivity.this, "data= " + data.getData().toString(), Toast.LENGTH_SHORT).show();
        }
    }
}