am.roadpolice.roadpolice.DecisionDialogFragment.java Source code

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Here is the source code for am.roadpolice.roadpolice.DecisionDialogFragment.java

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/*
 * Copyright (C) 2015 Victor Apoyan.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package am.roadpolice.roadpolice;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.text.TextUtils;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ProgressBar;
import android.widget.Toast;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class DecisionDialogFragment extends DialogFragment {

    private WebView mWebView = null;
    private ProgressBar mProgressBar = null;

    private class DecisionDownloader extends AsyncTask<Void, Void, String> {

        private final String mPin;

        private DecisionDownloader(final String pin) {
            mPin = pin;
        }

        @Override
        protected String doInBackground(Void... params) {
            // Create a new HttpClient and Post Header
            HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost("https://offense.roadpolice.am/act.php");

            try {
                // Add your data
                List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1);
                nameValuePairs.add(new BasicNameValuePair("pin", mPin));
                httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

                // Execute HTTP Post Request
                HttpResponse response = httpclient.execute(httppost);

                java.util.Scanner s = new java.util.Scanner(response.getEntity().getContent()).useDelimiter("\\A");
                return s.hasNext() ? s.next() : null;

            } catch (ClientProtocolException e) {

            } catch (IOException e) {

            }

            return null;
        }

        @Override
        protected void onPostExecute(String data) {
            // If download action was successfully completed, hide progress
            // bar and show content of decision in the web view in the dialog.
            if (mProgressBar != null)
                mProgressBar.setVisibility(View.GONE);
            if (mWebView != null && !TextUtils.isEmpty(data)) {
                mWebView.loadDataWithBaseURL(null, data, "text/html", "utf-8", null);
                mWebView.setWebViewClient(new WebViewClient() {
                    public boolean shouldOverrideUrlLoading(WebView view, String url) {
                        if (url != null && (url.startsWith("http://") || url.startsWith("https://"))) {
                            view.getContext().startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url)));
                            return true;
                        } else {
                            return false;
                        }
                    }
                });
            }
            // Close Dialog in the case if data downloade from the server
            // is null or empty.
            else {
                final Activity activity = getActivity();
                if (activity != null && isAdded()) {
                    Toast.makeText(activity, getString(R.string.txtServerIssues), Toast.LENGTH_LONG).show();
                }
                dismissAllowingStateLoss();
            }
        }

        @Override
        protected void onCancelled() {
            final Activity activity = getActivity();
            if (activity != null && isAdded()) {
                Toast.makeText(activity, getString(R.string.txtActionCanceled), Toast.LENGTH_LONG).show();
            }
        }
    }

    private final static String TAG = DecisionDialogFragment.class.getSimpleName();

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        View decisionView = getActivity().getLayoutInflater().inflate(R.layout.dialog_watcher, null);
        // Get Web View and Progress Bar.
        mWebView = (WebView) decisionView.findViewById(R.id.webView);
        mProgressBar = (ProgressBar) decisionView.findViewById(R.id.progressBar);

        Bundle bundle = getArguments();
        final DecisionDownloader d = new DecisionDownloader(bundle.getString(ActionDialogFragment.EXTRA_PIN, ""));
        d.execute();

        return new AlertDialog.Builder(getActivity())
                .setNeutralButton(R.string.txtClose, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        d.cancel(true);
                    }
                }).setView(decisionView).create();
    }

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

        setRetainInstance(true);
    }

    @Override
    public void onDestroy() {
        Dialog dialog = getDialog();
        if (dialog != null && dialog.isShowing())
            dialog.dismiss();

        super.onDestroy();
    }
}